ULS 30-Watt Series www.murata-ps.com Sixteenth-brick DOSA-Compatible, Isolated DC/DC Converters FEATURES Small footprint DC/DC converter, ideal for embedded applications 1.30" x 0.90" x 0.36" open frame package Typical unitss Industry standard DOSA "brick" format and pinout with surface mount option 2:1 Input Voltage Range (36V-75V, D48) PRODUCT OVERVIEW 2250 Volt Basic input/output isolation (48V models) Up to 30 Watts total output power with overtemperature shutdown High efficiency synchronous rectifier forward topology Stable no-load operation with no required external components Operating temperature range -40 to +85C with derating Certified to UL/EN/IEC 60950-1, CAN/CSA C22.2 No. 60950-1, EN60950-1 safety approvals, 2nd Edition Extensive self-protection shut down features F1 The world of "brick" DC/DC converters has seen a steady size reduction. The ULS series makes another dramatic size shrink down to a "sixteenthbrick" width (0.91 inches) while still retaining up to 30 Watt output and full 2250 Volt DC isolation. The PC-board mount converter family accepts 36 to 75 Volts DC inputs and delivers fixed outputs regulated to within 0.125%. The ULS converters are ideal for datacom and telecom applications, cell phone towers, data centers, server farms and network repeaters. ULS outputs may be trimmed within -20% to +10% of nominal output while delivering fast settling to current step loads and no adverse effects from higher capacitive loads. Excellent ripple and noise specifications assure compatibility to circuits *TPMBUJPO Barrier +Vin (1) using CPU's, ASIC's, programmable logic and FPGA's. No minimum load is required. For systems requiring controlled startup/shutdown, an external remote On/Off control may use a switch, transistor or digital logic. Many self-protection features on the ULS series avoid both converter and external circuit hazards. These include input undervoltage lockout and overtemperature shutdown. The outputs current limit using the "hiccup" autorestart technique and the outputs may be short-circuited indefinitely. Additional features include output overvoltage and reverse conduction elimination. The synchronous rectifier forward topology yields high efficiency for minimal heat buildup and "no fan" operation. +Vout (8) 4FOTF t4XJUDIJOH External DC Power Source On/Off Control (2) t'JMUFST Controller and Power 5SBOTGFS t$VSSFOU4FOTF 4FOTF Open = On $MPTFE0GG 1PTJUJWF MPHJD Reference and Error Amplifier Trim (6) -Vin (3) -Vout (4) *Sense is included on the ULS-3.3/8-D48 and ULS-5/6-D48 only. Figure 1. Simplified Block Diagram Typical topology is shown For full details go to www.murata-ps.com/rohs REG.-Nr. D216 www.murata-ps.com/support MDC_ULS-30W_C04 Page 1 of 30 ULS 30-Watt Series Sixteenth-brick DOSA-Compatible, Isolated DC/DC Converters PERFORMANCE SPECIFICATIONS SUMMARY AND ORDERING GUIDE M Output Root Model M ULS-3.3/8-D48 VOUT (V) IOUT Power (A, max.) (W) Input R/N (mV pk-pk) Typ. Max. Regulation (max.) Line Load VIN Nom. (V) Range (V) Efficiency IIN, no load (mA) IIN, full load (A) Min. Case (inches) Typ. 3.3 8 26.5 90 130 0.1% 0.1% 48 36-75 75 0.58 89% 90% 1.30x0.90x0.36 5 6 30 75 100 0.125% 0.1% 48 36-75 20 0.69 89% 91% 1.30x0.90x0.36 ULS-12/2.5-D48 12 2.5 30 130 150 0.125% 0.125% 48 36-75 25 0.71 86% 87.7% 1.30x0.90x0.36 ULS-15/2-D48 15 2 30 115 125 0.125% 0.125% 48 36-75 25 0.70 87.5% 89% 1.30x0.90x0.36 ULS-5/6-D48 M Please refer to the Part Number Structure when ordering. O Regulation specifications describe output voltage deviations from a nominal/midpoint value to either N All specifications are typical at nominal line voltage and full load, +25C unless otherwise noted. See extreme (50% load step). detailed specifications. Output capacitors are 1 F ceramic multilayer in parallel with 10 F electrolytic. I/O caps are necessary for our test equipment and may not be needed for your application. PART NUMBER STRUCTURE ULS - 12 / 2.5 - D48 N M Lx - C RoHS Hazardous Substance Compliance (does not claim EU RoHS exemption 7b-lead in solder) C = RoHS-6 Sixteenth Brick Series Pin Length Option (Thru-hole only) Blank = Standard pin length 0.180 (4.6mm) L1 = 0.110 (2.79mm)* L2 = 0.145 (3.68mm)* Nominal Output Voltage: Maximum Rated Output Current Current in Amps Input Voltage Range: D48 = 36-75 Volts (48V nominal) SMT Version (MSL Rating 2) Blank = Through-hole mount, no SMT M = Surface mount On/Off Control Logic: N = Negative P = Positive *Special quantity order is required; no sample quantities available. Note: Some model number combinations may not be available. Please contact Murata Power Solutions. www.murata-ps.com/support MDC_ULS-30W_C04 Page 2 of 30 ULS 30-Watt Series Sixteenth-brick DOSA-Compatible, Isolated DC/DC Converters FUNCTIONAL SPECIFICATIONS, ULS-3.3/8-D48 Conditions ABSOLUTE MAXIMUM RATINGS Input Voltage, Continuous Input Voltage, Transient Isolation Voltage Input Reverse Polarity On/Off Remote Control Output Power Minimum Typical/Nominal 0 100 mS max. duration Input to output, continuous None, install external fuse Power on, referred to -Vin Maximum 80 100 2250 None 0 0 15 26.66 Units Vdc Vdc Vdc Vdc Vdc W Current-limited, no damage, short-circuit 0 8 A protected Storage Temperature Range Vin = Zero (no power) -55 125 C Absolute maximums are stress ratings. Exposure of devices to greater than any of these conditions may adversely affect long-term reliability. Proper operation under conditions other than those listed in the Performance/Functional Specifications Table is not implied or recommended. Output Current Conditions INPUT Operating voltage range Recommended External Fuse Start-up threshold Undervoltage shutdown Turn-On/Turn-Off Hysteresis Overvoltage shutdown Reverse Polarity Protection Internal Filter Type Input current Full Load Conditions Low Line Inrush Transient Output in Short Circuit No Load Shut-Down Input Current (Off, UV, OT) Reflected (back) ripple current Fast blow Rising input voltage Falling input voltage 36 48 34 32 35.2 34 1.5 None None LC None, install external fuse Vin = nominal Vin = minimum 0.58 0.77 0.05 50 75 1 30 Iout = minimum, unit = ON Measured at input with specified filter 75 1.5 36 35.2 Vdc A Vdc Vdc Vdc Vdc Vdc 0.63 0.83 A A A2-Sec. mA mA mA mA, p-p 100 100 2 GENERAL and SAFETY Efficiency Isolation Isolation Voltage Insulation Safety Rating Isolation Resistance Isolation Capacitance Safety Calculated MTBF Vin = 48V, full load Vin = min., full load 89 89.5 Input to output, continuous 2250 90 90.5 % % Vdc basic 10 M pF 1000 Certified to UL-60950-1, CSA-C22.2 No. 60950-1, IEC/EN60950-1, 2nd edition Per Telcordia SR332, issue 1, class 3, ground fixed, Tambient = +25C Yes Hours x 106 2 DYNAMIC CHARACTERISTICS Fixed Switching Frequency Startup Time Startup Time Dynamic Load Response Dynamic Load Peak Deviation 320 Power on to Vout regulated Remote ON to Vout regulated 50-75-50% load step, settling time to within 2% of Vout same as above 350 380 50 50 KHz mS mS 100 150 Sec 30 100 mV 1.2 15 V V mA 15 1.2 V V mA FEATURES and OPTIONS Remote On/Off Control "N" suffix: Negative Logic, ON state Negative Logic, OFF state Control Current "P" suffix: Positive Logic, ON state Positive Logic, OFF state Control Current SMT Mounting ON = Ground pin or external voltage OFF = Pin open or external voltage Open collector/drain -0.7 10 ON = Pin open or external voltage OFF = Ground pin or external voltage Open collector/drain "M" suffix 10 -0.7 1 1 www.murata-ps.com/support MDC_ULS-30W_C04 Page 3 of 30 ULS 30-Watt Series Sixteenth-brick DOSA-Compatible, Isolated DC/DC Converters FUNCTIONAL SPECIFICATIONS, ULS-3.3/8-D48 (CONT.) Conditions OUTPUT Total Output Power Voltage Nominal Output Voltage Setting Accuracy Output Voltage Range Overvoltage Protection Current Output Current Range Minimum Load Current Limit Inception Short Circuit Short Circuit Current Short Circuit Duration (remove short for recovery) Short circuit protection method Regulation Line Regulation Load Regulation Ripple and Noise Temperature Coefficient Maximum Capacitive Loading Minimum Typical/Nominal Maximum Units See Derating 2.61 25 26.66 W No trim At 50% load, no trim User-adjustable Via magnetic feedback 3.2674 -1 -10 4.2 3.3 5 3.333 1 10 5.7 Vdc % of Vnom % of Vnom. Vdc 0.8 8 8 A 8.5 10 11.3 A 0.3 mA 0.1 0.1 130 % of Vout % of Vout mV pk-pk % of Vout./C F 98% of Vnom., after warmup Hiccup technique, autorecovery within 1.25% of Vout Output shorted to ground, no damage Continuous Current limiting Vin = min. to max., Vout = nom., Iout = nom. Iout = min. to max., Vin = 48V 5 Hz- 20 MHz BW At all outputs Low ESR, resistive load only 90 0.02 2000 Conditions MECHANICAL (Through Hole Models) Outline Dimensions (Please refer to outline drawing) Weight 1.30x0.90x0.36 33.02x22.86x9.144 0.58 16.4 0.04 & 0.062 1.016 & 1.575 Copper alloy 50 5 LxWxH Through Hole Pin Diameter Through Hole Pin Material TH Pin Plating Metal and Thickness Nickel subplate Gold overplate Inches mm Ounces Grams Inches mm -inches -inches ENVIRONMENTAL Operating Ambient Temperature Range Operating Case Temperature Range Storage Temperature Thermal Protection/Shutdown Electromagnetic Interference Conducted, EN55022/CISPR22 Radiated, EN55022/CISPR22 Relative humidity, non-condensing Altitude With Derating No derating, full power, 200lfm, Vertical mount Vin = Zero (no power) Measured in center External filter is required -40 -40 -55 110 115 85 70 125 120 C C C C 90 10,000 3048 Class Class %RH feet meters B B To +85C must derate -1%/1000 feet RoHS rating 10 -500 -152 RoHS-6 Performance Specification Notes Unless otherwise noted, all specifications are typical at nominal input voltage, nominal output voltage and full load. General conditions are +25 Celsius ambient temperature, near sea level altitude, natural convection airflow. All models are tested and specified with external parallel 1 F and 10 F multi-layer ceramic output capacitors. The external input capacitor is 22 F ceramic. All capacitors are low-ESR types wired close to the converter. These capacitors are necessary for our test equipment and may not be needed in the user's application. Input (back) ripple current is tested and specified over 5 Hz to 20 MHz bandwidth. Input filtering is Cbus = 220 F/100V, Cin = 33 F/100V and Lbus = 12 H. All models are stable and regulate to specification under no load. Reduction of Hazardous Substances (RoHS) compliance is to RoHS-6 (six substances restricted including lead). See specifications. The Remote On/Off Control is referred to -Vin. Regulation specifications describe the output voltage changes as the line voltage or load current is varied from its nominal or midpoint value to either extreme. www.murata-ps.com/support MDC_ULS-30W_C04 Page 4 of 30 ULS 30-Watt Series Sixteenth-brick DOSA-Compatible, Isolated DC/DC Converters TYPICAL PERFORMANCE CURVES, ULS-3.3/8-D48 Maximum Current Temperature Derating at Sea Level (VIN = 36-75V, airflow is from pin 1 to pin 3) 92 90 88 86 84 82 80 78 76 74 72 70 68 66 64 8 Output Current (Amps) Efficiency (%) Efficiency vs. Line Voltage and Load Current @ 25C VIN = 75V VIN = 60V VIN = 48V VIN = 36V 0.33 to 2.0 m/s (65 to 400 LFM) 7 6 5 4 3 2 1 0 30 0.00 0.81 1.61 2.41 3.21 4.01 4.81 Load Current (Amps) 5.61 6.41 7.21 8.01 35 40 45 50 55 60 65 Ambient Temperature (C) 70 75 80 85 INFRARED THERMAL IMAGE, ULS-3.3/8-D48 Thermal image with hot spot at full load current with 25C ambient temperature. Natural convention is used with no forced airflow. Identifiable and recommended maximum value to be verified in application. Vin=48V, Q7 max temp=120C/IPC9592 guidelines. (+Vin) (+Vout) (-Vin) (-Vout) www.murata-ps.com/support MDC_ULS-30W_C04 Page 5 of 30 ULS 30-Watt Series Sixteenth-brick DOSA-Compatible, Isolated DC/DC Converters OSCILLOGRAMS, ULS-3.3/8-D48 On/Off Enable Delay (Vin=36V, vout=nom, Iout=8A, Cload =1uF || 10uF, Ta=+25C, ScopeBW=20Mhz) Trace 1= Enable, Trace 3= Vout. On/Off Enable Delay (Vin=75V, vout=nom, Iout=8A, Cload =1uF || 10uF, Ta=+25C, ScopeBW=20Mhz) Trace 1= Enable, Trace 3= Vout. Startup Delay (Vin=48V, Vout=nom, Iout=8A, Cload= 1uF || 10 uF, Ta=+25C, ScopeBW=20Mhz) Trace 1= Vin, Trace3, Vout. Startup Delay (Vin=48V, Vout=nom, Iout=8A, Cload= 1uF || 10 uF & 2000uF, Ta=+25C, ScopeBW=20Mhz) Trace 1= Vin, Trace3, Vout. www.murata-ps.com/support MDC_ULS-30W_C04 Page 6 of 30 ULS 30-Watt Series Sixteenth-brick DOSA-Compatible, Isolated DC/DC Converters OSCILLOGRAMS, ULS-3.3/8-D48 Step Load Transient Response (Vin=48V, Vout=nom, Iout=50-100-50% of full load, Cload= 1uF || 10uF, Ta=+25C, ScopeBW=20Mhz) Step Load Transient Response (Vin=48V, Vout=nom, Iout=50-75-50% of full load, Cload= 1uF || 10uF, Ta=+25C, ScopeBW=20Mhz) Output Ripple and Noise (Vin=48V, Vout=nom, Iout=8A, Cload= 1uF || 10uF, Ta=+25C, ScopeBW=20Mhz) www.murata-ps.com/support MDC_ULS-30W_C04 Page 7 of 30 ULS 30-Watt Series Sixteenth-brick DOSA-Compatible, Isolated DC/DC Converters FUNCTIONAL SPECIFICATIONS, ULS-5/6-D48 Conditions ABSOLUTE MAXIMUM RATINGS Input Voltage, Continuous Input Voltage, Transient Isolation Voltage Input Reverse Polarity On/Off Remote Control Output Power Minimum Typical/Nominal 0 100 mS max. duration Input to output, continuous None, install external fuse Power on, referred to -Vin Maximum 80 100 2250 None 0 0 15 30.3 Units Vdc Vdc Vdc Vdc Vdc W Current-limited, no damage, short-circuit 0 6 A protected Storage Temperature Range Vin = Zero (no power) -55 125 C Absolute maximums are stress ratings. Exposure of devices to greater than any of these conditions may adversely affect long-term reliability. Proper operation under conditions other than those listed in the Performance/Functional Specifications Table is not implied or recommended. Output Current Conditions INPUT Operating voltage range Recommended External Fuse Start-up threshold Undervoltage shutdown Turn-On/Turn-Off Hysteresis Overvoltage shutdown Reverse Polarity Protection Internal Filter Type Input current Full Load Conditions Low Line Inrush Transient Output in Short Circuit No Load Shut-Down Input Current (Off, UV, OT) Reflected (back) ripple current Fast blow Rising input voltage Falling input voltage 36 48 32.5 31 1.62 35 33.5 1.67 None None LC None, install external fuse Vin = nominal Vin = minimum 0.69 0.92 0.05 10 20 1 30 Iout = minimum, unit = ON Measured at input with specified filter 75 2 35.9 34 1.72 Vdc A Vdc Vdc Vdc Vdc Vdc 0.71 0.95 A A A2-Sec. mA mA mA mA, p-p 100 60 3 GENERAL and SAFETY Efficiency Isolation Isolation Voltage Insulation Safety Rating Isolation Resistance Isolation Capacitance Safety Calculated MTBF Vin = 48V, full load Vin = min., full load 89 89 Input to output, continuous 2250 91 91 % % Vdc basic 10 3300 Certified to UL-60950-1, CSA-C22.2 No. 60950-1, IEC/EN60950-1, 2nd edition Per Telcordia SR332, issue 1, class 3, ground fixed, Tambient = +25C M pF Yes Hours x 106 TBD DYNAMIC CHARACTERISTICS Fixed Switching Frequency Startup Time Startup Time Dynamic Load Response Dynamic Load Peak Deviation 325 Power on to Vout regulated Remote ON to Vout regulated 50-75-50% load step, settling time to within 1% of Vout same as above 355 10 10 385 40 40 KHz mS mS 75 100 Sec 150 mV FEATURES and OPTIONS Remote On/Off Control "N" suffix: Negative Logic, ON state Negative Logic, OFF state Control Current "P" suffix: Positive Logic, ON state Positive Logic, OFF state Control Current SMT Mounting ON = Ground pin or external voltage OFF = Pin open or external voltage Open collector/drain -0.1 2.5 ON = Pin open or external voltage OFF = Ground pin or external voltage Open collector/drain "M" suffix 10 0 0.8 15 V V mA 15 0.7 V V mA 1 1 www.murata-ps.com/support MDC_ULS-30W_C04 Page 8 of 30 ULS 30-Watt Series Sixteenth-brick DOSA-Compatible, Isolated DC/DC Converters FUNCTIONAL SPECIFICATIONS, ULS-5/6-D48 (CONT.) Conditions OUTPUT Total Output Power Voltage Nominal Output Voltage Setting Accuracy Output Voltage Range Overvoltage Protection Current Output Current Range Minimum Load Current Limit Inception Short Circuit Short Circuit Current Short Circuit Duration (remove short for recovery) Short circuit protection method Regulation Line Regulation Load Regulation Ripple and Noise Temperature Coefficient Maximum Capacitive Loading No trim At 50% load, no trim User-adjustable Via magnetic feedback 98% of Vnom., after warmup Minimum Typical/Nominal Maximum Units 0 30 30.3 W 4.95 -1 -10 6 5 6.5 5.05 1 10 7.2 Vdc % of Vnom % of Vnom. Vdc 0 6 6 A 6.5 7.5 8.25 A 0.3 A 0.125 0.1 100 % of Vout % of Vout mV pk-pk % of Vout./C F Hiccup technique, autorecovery within 1.25% of Vout Output shorted to ground, no damage Continuous Current limiting Vin = min. to max., Vout = nom., Iout = nom. Iout = min. to max., Vin = 48V 5 Hz- 20 MHz BW At all outputs Low ESR, resistive load only 75 0.02 2000 Conditions MECHANICAL (Through Hole Models) Outline Dimensions (Please refer to outline drawing) Weight 1.30x0.90x0.36 33.02x22.86x9.144 0.58 16.4 0.04 & 0.062 1.016 & 1.575 Copper alloy 50 5 LxWxH Through Hole Pin Diameter Through Hole Pin Material TH Pin Plating Metal and Thickness Nickel subplate Gold overplate Inches mm Ounces Grams Inches mm -inches -inches ENVIRONMENTAL Operating Ambient Temperature Range Operating Case Temperature Range Storage Temperature Thermal Protection/Shutdown Electromagnetic Interference Conducted, EN55022/CISPR22 Radiated, EN55022/CISPR22 RoHS rating With Derating No derating, full power, 200lfm, Vertical mount Vin = Zero (no power) Measured in center External filter is required -40 -40 -55 110 115 B B RoHS-6 85 70 125 120 C C C C Class Class Performance Specification Notes Unless otherwise noted, all specifications are typical at nominal input voltage, nominal output voltage and full load. General conditions are +25 Celsius ambient temperature, near sea level altitude, natural convection airflow. All models are tested and specified with external parallel 1 F and 10 F multi-layer ceramic output capacitors. The external input capacitor is 22 F ceramic. All capacitors are low-ESR types wired close to the converter. These capacitors are necessary for our test equipment and may not be needed in the user's application. Input (back) ripple current is tested and specified over 5 Hz to 20 MHz bandwidth. Input filtering is Cbus = 220 F/100V, Cin = 33 F/100V and Lbus = 12 H. All models are stable and regulate to specification under no load. Reduction of Hazardous Substances (RoHS) compliance is to RoHS-6 (six substances restricted including lead). See specifications. The Remote On/Off Control is referred to -Vin. Regulation specifications describe the output voltage changes as the line voltage or load current is varied from its nominal or midpoint value to either extreme. www.murata-ps.com/support MDC_ULS-30W_C04 Page 9 of 30 ULS 30-Watt Series Sixteenth-brick DOSA-Compatible, Isolated DC/DC Converters TYPICAL PERFORMANCE CURVES, ULS-5/6-D48 Maximum Current Temperature Derating at Sea Level (VIN = 36-75V, airflow is from pin 3 to pin 1) 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76 7 6 0.33 to 2.0 m/s (65 to 400 LFM) Output Current (Amps) Efficiency (%) Efficiency vs. Line Voltage and Load Current @ 25C VIN = 75V VIN = 60V VIN = 48V VIN = 36V 5 4 3 2 1 0 30 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 35 6.0 40 45 50 55 60 65 Ambient Temperature (C) 70 75 80 85 Load Current (Amps) Power Dissipation vs. Load Current @ 25C Current Limit 5.5 3.5 5 4.5 3.0 Loss (Watts) 4 2.5 3.5 3 2.0 VIN = 75V 2.5 VIN = 75V VIN = 60V VIN = 48V VIN = 36V 1.5 1.0 VIN = 60V 2 VIN = 36V 1.5 VIN = 48V 1 0.5 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 Load Current (Amps) 4.5 5.0 5.5 6.0 0 7.0 7.2 7.4 7.6 7.8 Output Load Current (Amps) 8.0 8.2 INFRARED THERMAL IMAGE, ULS-5/6-D48 Thermal image with hot spot at half current with 25C ambient temperature. Natural convention is used with no forced airflow. Identifiable and recommended maximum value to be verified in application. Vin=48V, Q7 max temp=120C/IPC9592 guidelines. 91.5C 90 (+Vin) Q7: 82.9 Q6: 81.3 (+Vout) T1: 78.1 80 R4: 80.1 R20: 82.3 70 60 (-Vin) (-Vout) 50 47.9C www.murata-ps.com/support MDC_ULS-30W_C04 Page 10 of 30 ULS 30-Watt Series Sixteenth-brick DOSA-Compatible, Isolated DC/DC Converters OSCILLOGRAMS, ULS-5/6-D48 Startup Delay (Vin=48V, Iout=6A, Cload=0, Ta=+25C) Trace1=Vin, Trace4=Vout. Startup Delay (Vin=48V, Iout=6A, Cload=2200uF, Ta=+25C) Trace1=Vin, Trace4=Vout On/Off Enable Delay (Vin=48V, Iout=6A, Cload=0, Ta=+25C) Trace1=Enable, Trace4=Vout On/Off Enable Delay (Vin=48V, Iout=6A, Cload=2000uF, Ta=+25C) Trace1=Enable, Trace4=Vout www.murata-ps.com/support MDC_ULS-30W_C04 Page 11 of 30 ULS 30-Watt Series Sixteenth-brick DOSA-Compatible, Isolated DC/DC Converters OSCILLOGRAMS, ULS-5/6-D48 Output Ripple and Noise (Vin=48V, Iout=0A, Cload= 1uF || 10uf, Ta=+25C) Output Ripple and Noise (Vin=48V, Iout=6A, Cload= 1uF || 10uf, Ta=+25C) Step Load Transient Response (Vin=48V, Iout=50-75-50% of Imax, Cload= 1uf || 10uF, Ta=+25C) www.murata-ps.com/support MDC_ULS-30W_C04 Page 12 of 30 ULS 30-Watt Series Sixteenth-brick DOSA-Compatible, Isolated DC/DC Converters FUNCTIONAL SPECIFICATIONS, ULS-12/2.5-D48 Conditions ABSOLUTE MAXIMUM RATINGS Input Voltage, Continuous Input Voltage, Transient Isolation Voltage Input Reverse Polarity On/Off Remote Control Output Power Minimum Typical/Nominal 0 100 mS max. duration Input to output, continuous None, install external fuse Power on, referred to -Vin Maximum 80 100 2250 None 0 0 15 30 Units Vdc Vdc Vdc Vdc Vdc W Current-limited, no damage, short-circuit 0 2.5 A protected Storage Temperature Range Vin = Zero (no power) -55 125 C Absolute maximums are stress ratings. Exposure of devices to greater than any of these conditions may adversely affect long-term reliability. Proper operation under conditions other than those listed in the Performance/Functional Specifications Table is not implied or recommended. Output Current Conditions INPUT Operating voltage range Recommended External Fuse Start-up threshold Undervoltage shutdown Turn-On/Turn-Off Hysteresis Overvoltage shutdown Reverse Polarity Protection Internal Filter Type Input current Full Load Conditions Low Line Inrush Transient Output in Short Circuit No Load Shut-Down Input Current (Off, UV, OT) Reflected (back) ripple current Fast blow Rising input voltage Falling input voltage 36 48 32.5 31 1.40 33.5 32 1.46 None None Capacitive None, install external fuse Vin = nominal Vin = minimum 0.71 0.95 0.05 100 25 5 15 Iout = minimum, unit = ON Measured at input with specified filter 75 2 35.5 33 1.52 Vdc A Vdc Vdc Vdc Vdc Vdc 0.73 0.97 A A A2-Sec. mA mA mA mA, p-p 200 50 10 30 GENERAL and SAFETY Efficiency Isolation Isolation Voltage Insulation Safety Rating Isolation Resistance Isolation Capacitance Safety Calculated MTBF Vin = 48V, full load Vin = min., full load 86.0 85.5 Input to output, continuous 2250 87.7 87.5 % % Vdc basic 100 1600 Certified to UL-60950-1, CSA-C22.2 No. 60950-1, IEC/EN60950-1, 2nd edition Per Telcordia SR332, issue 1, class 3, ground fixed, Tambient = +25C M pF Yes Hours x 106 3 DYNAMIC CHARACTERISTICS Fixed Switching Frequency Startup Time Startup Time Dynamic Load Response Dynamic Load Peak Deviation 260 Power on to Vout regulated Remote ON to Vout regulated 50-75-50% load step, settling time to within 1% of Vout same as above 285 310 30 30 KHz mS mS 200 300 Sec 250 300 mV 1 0.8 15 2 V V mA 1 15 0.7 2 V V mA FEATURES and OPTIONS Remote On/Off Control "N" suffix: Negative Logic, ON state Negative Logic, OFF state Control Current "P" suffix: Positive Logic, ON state Positive Logic, OFF state Control Current SMT Mounting ON = Ground pin or external voltage OFF = Pin open or external voltage Open collector/drain -0.1 2.5 ON = Pin open or external voltage OFF = Ground pin or external voltage Open collector/drain "M" suffix 10 0 www.murata-ps.com/support MDC_ULS-30W_C04 Page 13 of 30 ULS 30-Watt Series Sixteenth-brick DOSA-Compatible, Isolated DC/DC Converters FUNCTIONAL SPECIFICATIONS, ULS-12/2.5-D48 (CONT.) Conditions OUTPUT Total Output Power Voltage Nominal Output Voltage Setting Accuracy Output Voltage Range Overvoltage Protection Current Output Current Range Minimum Load Current Limit Inception Short Circuit Short Circuit Current Short Circuit Duration (remove short for recovery) Short circuit protection method Regulation Line Regulation Load Regulation Ripple and Noise Temperature Coefficient Maximum Capacitive Loading Minimum Typical/Nominal Maximum Units See Derating 0 30 30 W No trim At 50% load, no trim User-adjustable Via magnetic feedback 11.88 -1 -20 13.3 12.00 12.12 +1 +10 18 Vdc % of Vnom % of Vnom. Vdc 0.0 2.5 No minimum load 3.5 2.5 A 4.5 A 40 mA 0.125 0.125 150 % of Vout % of Vout mV pk-pk % of Vout./C F 98% of Vnom., after warmup 3.3 15 Hiccup technique, autorecovery within 1.25% of Vout Output shorted to ground, no damage Continuous Current limiting Vin = min. to max., Vout = nom., Iout = nom. Iout = min. to max., Vin = 48V 5 Hz- 20 MHz BW At all outputs Low ESR, resistive load only MECHANICAL (Through Hole Models) Outline Dimensions (Please refer to outline drawing) Weight 0 Conditions 1.30x0.90x0.36 33.02x22.86x9.144 0.58 16.4 0.04 & 0.062 1.016 & 1.575 Copper alloy 50 5 LxWxH Through Hole Pin Diameter Through Hole Pin Material TH Pin Plating Metal and Thickness 130 0.02 2200 Nickel subplate Gold overplate Inches mm Ounces Grams Inches mm -inches -inches ENVIRONMENTAL Operating Ambient Temperature Range Operating Case Temperature Range Storage Temperature Thermal Protection/Shutdown Electromagnetic Interference Conducted, EN55022/CISPR22 Radiated, EN55022/CISPR22 Relative humidity, non-condensing Altitude With Derating No derating, full power Vin = Zero (no power) Measured in center External filter is required -40 -40 -55 115 125 85 105 125 130 C C C C 90 10,000 3048 Class Class %RH feet meters B B To +85C must derate -1%/1000 feet RoHS rating 10 -500 -152 RoHS-6 Performance Specification Notes Unless otherwise noted, all specifications are typical at nominal input voltage, nominal output voltage and full load. General conditions are +25 Celsius ambient temperature, near sea level altitude, natural convection airflow. All models are tested and specified with external parallel 1 F and 10 F multi-layer ceramic output capacitors. The external input capacitor is 22 F ceramic. All capacitors are low-ESR types wired close to the converter. These capacitors are necessary for our test equipment and may not be needed in the user's application. Input (back) ripple current is tested and specified over 5 Hz to 20 MHz bandwidth. Input filtering is Cbus = 220 F/100V, Cin = 33 F/100V and Lbus = 12 H. All models are stable and regulate to specification under no load. Reduction of Hazardous Substances (RoHS) compliance is to RoHS-6 (six substances restricted including lead). See specifications. The Remote On/Off Control is referred to -Vin. Regulation specifications describe the output voltage changes as the line voltage or load current is varied from its nominal or midpoint value to either extreme. www.murata-ps.com/support MDC_ULS-30W_C04 Page 14 of 30 ULS 30-Watt Series Sixteenth-brick DOSA-Compatible, Isolated DC/DC Converters TYPICAL PERFORMANCE CURVES, ULS-12/2.5-D48 Efficiency vs. Line Voltage and Load Current @ 25C Power Dissipation vs. Load Current @ 25C 89 4.5 87 4.0 3.5 Loss (Watts) Efficiency (%) 85 83 81 79 VIN = 75V VIN = 60V VIN = 48V VIN = 36V 77 75 0.25 0.48 0.70 0.93 3.0 2.5 2.0 VIN = 75V VIN = 60V VIN = 48V VIN = 36V 1.5 1.0 1.15 1.38 1.60 Load Current (Amps) 1.83 2.05 2.28 0.5 0.3 2.50 Maximum Current Temperature Derating at Sea Level (VIN = 36V, 48V, and 75V, airflow is from pin 3 to pin 1) 0.9 1.2 1.4 1.6 Load Current (Amps) 1.8 2.1 2.3 2.5 3.0 Output Current (Amps) Output Current (Amps) 0.7 Maximum Current Temperature Derating at Sea Level (VIN = 60V, airflow is from pin 3 to pin 1) 3.0 2.5 0.33 to 2.0 m/s (65 to 400 LFM) 2.0 0.5 30 35 40 45 50 55 60 65 Ambient Temperature (C) 70 75 80 85 2.5 0.33 m/s (65 LFM) 0.5 to 2.0 m/s (100 to 400 LFM) 2.0 30 35 40 45 50 55 60 65 Ambient Temperature (C) 70 75 80 85 INFRARED THERMAL IMAGE, ULS-12/2.5-D48 Thermal image with hot spot at full load current with 25 C ambient temperature. Natural convention is used with no forced airflow. Identifiable and recommended maximum value to be verified in application. Vin=48V, Q6 max Temp=120 C/IPC9592 guidelines. 88.5C (+Vin) (+Vout) 80 70 T1: 67 CR17: 72 60 Q6: 79 R6: 78 50 (-Vin) (-Vout) 41.0C www.murata-ps.com/support MDC_ULS-30W_C04 Page 15 of 30 ULS 30-Watt Series Sixteenth-brick DOSA-Compatible, Isolated DC/DC Converters OSCILLOGRAMS, ULS-12/2.5-D48 On/Off Enable Delay (Vin = 48V, Vout = nom., Iout = 2.5A, Cload = 0 F, Ta = +25C., ScopeBW = 20MHz) Trace 1 = Enable, Trace 4 = Vout Power On Startup Delay (Vin = 48V, Vout = nom., Iout = 2.5A, Cload = 0 F, Ta = +25C., ScopeBW = 20MHz) Trace 1 = Vin, Trace 4 = Vout Step Load Transient Response (Vin = 48V, Vout = nom., Iout = 50-75-50% of full load, Cload = 1 F ceramic || 10F tantalum, Ta = +25C., ScopeBW = 20MHz) Output Ripple and Noise (Vin = 48V, Vout = nom., Iout = no load, Cload = 1 F ceramic || 10F tantalum, Ta = +25C., ScopeBW = 20MHz) Output Ripple and Noise (Vin = 48V, Vout = nom., Iout = 2.5A, Cload = 1 F ceramic || 10F tantalum, Ta = +25C., ScopeBW = 20MHz) www.murata-ps.com/support MDC_ULS-30W_C04 Page 16 of 30 ULS 30-Watt Series Sixteenth-brick DOSA-Compatible, Isolated DC/DC Converters FUNCTIONAL SPECIFICATIONS, ULS-15/2-D48 Conditions ABSOLUTE MAXIMUM RATINGS Input Voltage, Continuous Input Voltage, Transient Isolation Voltage Input Reverse Polarity On/Off Remote Control Output Power Minimum Typical/Nominal 0 100 mS max. duration Input to output, continuous None, install external fuse Power on, referred to -Vin Maximum 80 100 2250 None 0 0 15 30 Units Vdc Vdc Vdc Vdc Vdc W Current-limited, no damage, short-circuit 0 2 A protected Storage Temperature Range Vin = Zero (no power) -55 125 C Absolute maximums are stress ratings. Exposure of devices to greater than any of these conditions may adversely affect long-term reliability. Proper operation under conditions other than those listed in the Performance/Functional Specifications Table is not implied or recommended. Output Current Conditions INPUT Operating voltage range Recommended External Fuse Start-up threshold Undervoltage shutdown Turn-On/Turn-Off Hysteresis Overvoltage shutdown Reverse Polarity Protection Internal Filter Type Input current Full Load Conditions Low Line Inrush Transient Output in Short Circuit No Load Shut-Down Input Current (Off, UV, OT) Reflected (back) ripple current Fast blow Rising input voltage Falling input voltage 36 48 32.5 31 1.42 33.5 32 1.48 None None Capacitive None, install external fuse Vin = nominal Vin = minimum 0.7 0.94 0.05 100 25 5 15 Iout = minimum, unit = ON Measured at input with specified filter 75 2 35.5 33 1.52 Vdc A Vdc Vdc Vdc Vdc Vdc 0.714 0.95 A A A2-Sec. mA mA mA mA, p-p 200 50 10 30 GENERAL and SAFETY Efficiency Isolation Isolation Voltage Insulation Safety Rating Isolation Resistance Isolation Capacitance Safety Calculated MTBF Vin = 48V, full load Vin = min., full load 87.5 87.5 Input to output, continuous 2250 89.0 89.0 % % Vdc basic 100 1600 Certified to UL-60950-1, CSA-C22.2 No.60950-1, IEC/EN60950-1, 2nd edition Per Telcordia SR332, issue 1, class 3, ground fixed, Tambient = +25C M pF Yes Hours x 106 3 DYNAMIC CHARACTERISTICS Fixed Switching Frequency Startup Time Startup Time Dynamic Load Response Dynamic Load Peak Deviation 280 Power on to Vout regulated Remote ON to Vout regulated 50-75-50% load step, settling time to within 1% of Vout same as above 290 310 30 30 KHz mS mS 200 300 Sec 250 300 mV 1 0.8 15 2 V V mA 1 15 0.7 2 V V mA FEATURES and OPTIONS Remote On/Off Control "N" suffix: Negative Logic, ON state Negative Logic, OFF state Control Current "P" suffix: Positive Logic, ON state Positive Logic, OFF state Control Current SMT Mounting ON = Ground pin or external voltage OFF = Pin open or external voltage Open collector/drain -0.1 2.5 ON = Pin open or external voltage OFF = Ground pin or external voltage Open collector/drain "M" suffix 10 0 www.murata-ps.com/support MDC_ULS-30W_C04 Page 17 of 30 ULS 30-Watt Series Sixteenth-brick DOSA-Compatible, Isolated DC/DC Converters FUNCTIONAL SPECIFICATIONS, ULS-15/2-D48 (CONT.) Conditions OUTPUT Total Output Power Voltage Nominal Output Voltage Setting Accuracy Output Voltage Range Overvoltage Protection Current Output Current Range Minimum Load Current Limit Inception Short Circuit Short Circuit Current Short Circuit Duration (remove short for recovery) Short circuit protection method Regulation Line Regulation Load Regulation Ripple and Noise Temperature Coefficient Maximum Capacitive Loading Minimum Typical/Nominal Maximum Units See Derating 0 30 30 W No trim At 50% load, no trim User-adjustable Via magnetic feedback 14.85 -1 -20 18 15.00 15.15 +1 +10 20 Vdc % of Vnom % of Vnom. Vdc 0.0 2.0 No minimum load 3.0 2.0 A 3.45 A 0.6 A 0.125 0.125 125 % of Vout % of Vout mV pk-pk % of Vout./C F 98% of Vnom., after warmup 2.45 19 Hiccup technique, autorecovery within 1.25% of Vout Output shorted to ground, no damage Continuous Current limiting Vin = min. to max., Vout = nom., Iout = nom. Iout = min. to max., Vin = 48V 5 Hz- 20 MHz BW At all outputs Low ESR, resistive load only MECHANICAL (Through Hole Models) Outline Dimensions (Please refer to outline drawing) Weight 0 Conditions 1.30x0.90x0.36 33.02x22.86x9.144 0.58 16.4 0.04 & 0.062 1.016 & 1.575 Copper alloy 50 5 LxWxH Through Hole Pin Diameter Through Hole Pin Material TH Pin Plating Metal and Thickness 115 0.02 2200 Nickel subplate Gold overplate Inches mm Ounces Grams Inches mm -inches -inches ENVIRONMENTAL Operating Ambient Temperature Range Operating Case Temperature Range Storage Temperature Thermal Protection/Shutdown Electromagnetic Interference Conducted, EN55022/CISPR22 Radiated, EN55022/CISPR22 Relative humidity, non-condensing Altitude With Derating No derating, full power Vin = Zero (no power) Measured in center External filter is required -40 -40 -55 115 125 85 105 125 130 C C C C 90 10,000 3048 Class Class %RH feet meters B B To +85C must derate -1%/1000 feet RoHS rating 10 -500 -152 RoHS-6 Performance Specification Notes Unless otherwise noted, all specifications are typical at nominal input voltage, nominal output voltage and full load. General conditions are +25 Celsius ambient temperature, near sea level altitude, natural convection airflow. All models are tested and specified with external parallel 1 F and 10 F multi-layer ceramic output capacitors. The external input capacitor is 22 F ceramic. All capacitors are low-ESR types wired close to the converter. These capacitors are necessary for our test equipment and may not be needed in the user's application. Input (back) ripple current is tested and specified over 5 Hz to 20 MHz bandwidth. Input filtering is Cbus = 220 F/100V, Cin = 33 F/100V and Lbus = 12 H. All models are stable and regulate to specification under no load. Reduction of Hazardous Substances (RoHS) compliance is to RoHS-6 (six substances restricted including lead). See specifications. The Remote On/Off Control is referred to -Vin. Regulation specifications describe the output voltage changes as the line voltage or load current is varied from its nominal or midpoint value to either extreme. www.murata-ps.com/support MDC_ULS-30W_C04 Page 18 of 30 ULS 30-Watt Series Sixteenth-brick DOSA-Compatible, Isolated DC/DC Converters TYPICAL PERFORMANCE CURVES, ULS-15/2-D48 Efficiency vs. Line Voltage and Load Current @ 25C Power Dissipation vs. Load Current @ 25C 91 3.5 89 3.0 Loss (Watts) Efficiency (%) 87 85 VIN = 75V VIN = 60V VIN = 48V VIN = 36V 83 81 2.5 2.0 VIN = 75V VIN = 60V VIN = 48V VIN = 36V 1.5 79 1.0 77 75 0.21 0.39 0.57 0.75 0.93 1.11 1.29 Load Current (Amps) 1.47 1.65 1.83 2.01 0.5 0.2 0.4 0.6 0.7 0.9 1.1 1.3 Load Current (Amps) 1.5 1.6 1.8 2.0 Maximum Current Temperature Derating at Sea Level (VIN = 36V, 48V, 60V, and 75V, airflow is from pin 3 to pin 1) Output Current (Amps) 2.5 2.0 0.33 to 2.0 m/s (65 to 400 LFM) 1.5 30 35 40 45 50 55 60 65 Ambient Temperature (C) 70 75 80 85 INFRARED THERMAL IMAGE, ULS-15/2-D48 Thermal image with hot spot at full load current with 25 C ambient temperature. Natural convention is used with no forced airflow. Identifiable and recommended maximum value to be verified in application. Vin=48V, Q6 max Temp=120 C/IPC9592 guidelines. 80.6C 80 (+Vin) (+Vout) 70 T1: 62 60 Q6: 75 R6: 73 (-Vin) (-Vout) 50 45.7C www.murata-ps.com/support MDC_ULS-30W_C04 Page 19 of 30 ULS 30-Watt Series Sixteenth-brick DOSA-Compatible, Isolated DC/DC Converters OSCILLOGRAMS, ULS-15/2-D48 On/Off Enable Delay (Vin = 48V, Vout = nom., Iout = 2A, Cload = 0 F, Ta = +25C., ScopeBW = 20MHz) Trace 1 = Enable, Trace 4 = Vout Power On Startup Delay (Vin = 48V, Vout = nom., Iout = 2A, Cload = 0 F, Ta = +25C., ScopeBW = 20MHz) Trace 1 = Vin, Trace 4 = Vout Step Load Transient Response (Vin = 48V, Vout = nom., Iout = 50-75-50% of full load, Cload = 1 F ceramic || 10F tantalum, Ta = +25C., ScopeBW = 20MHz) Output Ripple and Noise (Vin = 48V, Vout = nom., Iout = no load, Cload = 1 F ceramic || 10F tantalum, Ta = +25C., ScopeBW = 20MHz) Output Ripple and Noise (Vin = 48V, Vout = nom., Iout = 2A, Cload = 1 F ceramic || 10F tantalum, Ta = +25C., ScopeBW = 20MHz) www.murata-ps.com/support MDC_ULS-30W_C04 Page 20 of 30 ULS 30-Watt Series Sixteenth-brick DOSA-Compatible, Isolated DC/DC Converters MECHANICAL SPECIFICATIONS, THROUGH-HOLE MOUNT SIDE VIEW END VIEW 0.36 (9.144) 0.18 (4.572) 00.060 @ PINS 4 & 8 0.010 MIN CLEARANCE FINISH: (ALL PINS) GOLD (5u"MIN) OVER NICKEL (50u" MIN) 0.040 @ PINS 1-3, 5-7 BOTTOM PIN VIEW PIN #3 PIN #8 1.30 (33.02) 1.100 (27.94) PIN #4 5* 0.300 (7.62) 6 0.150 (3.81) 0.150 (3.81) 2 0.300 (7.62) ISOMETRIC VIEW 4 3 0.90 (22.86) MATERIAL: .040 PINS: COPPER ALLOY .062 PINS: COPPER ALLOY Pin 3 CL 7* 2 8 1 1 0.550 (13.97) *Sense is included on the ULS-3.3/8-D48 and ULS-5/6-D48 only. CL The 0.18-inch pin length is shown. Please refer to the part number structure for alternate pin lengths. Pin material: Copper alloy. Plating: Gold over nickel Recommended Footprint (View Through Converter) FINISHED HOLE SIZES @ PINS 1-3, 5-7 (PRI) .048-.062 0.46 (11.7) 0.92 (23.4) CL Please note that some competitive units may use different pin numbering or alternate outline views; however, all units are plugin-compatible. Top View (PER IPC-D-275, LEVEL C) (SEC) 1.100 (27.94) 1 0.300 (7.62) 7* 2 6 3 It is recommended that no parts be placed beneath the converter. 0.150 (3.80) 8 0.300 (7.62) 5* 0.100 MIN ANNULAR RING FOR ALL PIN SHOULDERS INPUT/OUTPUT CONNECTIONS P75 Function Pin Function -Vin 4 -Vout 5 (-)Sense On/Off Control 6 Trim 7 (+)Sense +Vin 8 +Vout Dimensions are in inches (mm shown for ref. only). CL Third Angle Projection 4 0.150 (3.80) 0.55 (14.0) CL 1.32 (33.5) FINISHED HOLE SIZES @ PINS 4 & 8 (PER IPC-D-275, LEVEL C) It is recommended that no parts be placed beneath converter .070-.084 Tolerances (unless otherwise specified): .XX 0.02 (0.5) .XXX 0.010 (0.25) Angles 2 Components are shown for reference only. www.murata-ps.com/support MDC_ULS-30W_C04 Page 21 of 30 ULS 30-Watt Series Sixteenth-brick DOSA-Compatible, Isolated DC/DC Converters MECHANICAL SPECIFICATIONS, SURFACE MOUNT (MSL RATING 2) SIDE VIEW END VIEW 0.36 .36 (9.144) 0.010 MIN CLEARANCE 0.062 TYP (ALL PINS) 0.125 REF MATERIAL: SMT CONTACTS: COPPER ALLOY FINISH: (ALL PINS) GOLD (5u"MIN) OVER NICKEL (50u" MIN) BOTTOM PIN VIEW 1.30 (33.02) 1.100 (27.94) 0.90 (22.86) 5* 6 0.300 (7.62) PIN #8 4 3 0.300 (7.62) 0.150 (3.81) PIN #4 CL 0.150 (3.81) 2 8 1 Pin 3 0.550 (13.97) CL 2 1 Recommended Footprint (View Through Converter) (SEC) 1.100 (27.94) 0.92 (23.4) CL 8 1 Sense is included on the ULS-3.3/8-D48 and ULS-5/6-D48 only. 0.300 (7.62) 6 5* It is recommended that no parts be placed beneath the converter. 0.150 (3.80) 7* 2 INPUT/OUTPUT CONNECTIONS P75 Function Pin Function -Vin 4 -Vout 5 (-)Sense On/Off Control 6 Trim 7 (+)Sense +Vin 8 +Vout Please note that some competitive units may use different pin numbering or alternate outline views; however, all units are plugin-compatible. Top View (PRI) 0.46 (11.7) ISOMETRIC VIEW 7* 0.300 (7.62) CL Dimensions are in inches (mm shown for ref. only). Third Angle Projection 3 4 0.150 (3.80) 0.55 (14.0) CL 1.32 (33.5) 0.070 MIN PAD (6 or 8 PLS AS REQUIRED) Tolerances (unless otherwise specified): .XX 0.02 (0.5) .XXX 0.010 (0.25) Angles 2 Components are shown for reference only. It is recommended that no parts be placed beneath converter www.murata-ps.com/support MDC_ULS-30W_C04 Page 22 of 30 ULS 30-Watt Series Sixteenth-brick DOSA-Compatible, Isolated DC/DC Converters SHIPPING TRAYS AND BOXES, THROUGH-HOLE MOUNT 4.50 (114.3) .25 Closed height 11.00 (279.4) .25 32 units per tray 4 trays per box 10.50 (266.7) .25 Each static dissipative polyethylene foam tray accommodates 32 converters in a 4 x 8 array. SHIPPING TRAY DIMENSIONS Material: Low density, closed cell polyethylene anti-static foam 9.84 (250.00) 9.84 (250.00) 0.47 (12.00) 4-C 0.26 (6.5) 0.87 (22.00) 0.59 (15.00) 1 .3 R0 .00) (8 1.34 (34.00) 1.97 (50.00) 0.31 (8.00) 0.51 (13.00) 0.91 (23.00) 0.24 (6.00) Dimensions are in inches (mm shown for ref. only). Third Angle Projection Tolerances (unless otherwise specified): .XX 0.02 (0.5) .XXX 0.010 (0.25) Angles 1 Components are shown for reference only. www.murata-ps.com/support MDC_ULS-30W_C04 Page 23 of 30 ULS 30-Watt Series Sixteenth-brick DOSA-Compatible, Isolated DC/DC Converters TAPE AND REEL INFORMATION (MSL RATING 2) Feed (Unwind) Direction ---- 0.14 (3.556) Pin #1 0.069 (1.75) Round Holes 0.85 (21.59) 1.732 (44.00) 0.354 (9.00) MAX PICKUP NOZZLE 1.26 (32.0) PITCH Oblong Holes Top Cover Tape 13.00 (330.20) TAPE AND REEL (200 UNITS PER REEL) .512 (13.00) 4.00 (101.60) CORE 1.73 (44.0) REF Dimensions are in inches (mm shown for ref. only). Third Angle Projection Tolerances (unless otherwise specified): .XX 0.02 (0.5) .XXX 0.010 (0.25) Angles 1 Components are shown for reference only. www.murata-ps.com/support MDC_ULS-30W_C04 Page 24 of 30 ULS 30-Watt Series Sixteenth-brick DOSA-Compatible, Isolated DC/DC Converters TECHNICAL NOTES Input Fusing Certain applications and/or safety agencies may require the installation of fuses at the inputs of power conversion components. Fuses should also be used if the possibility of sustained, non-current-limited, input-voltage polarity reversals exists. For DATEL ULS series DC/DC converters, we recommend the use of a fast blow fuse, installed in the ungrounded input supply line with a typical value about twice the maximum input current, calculated at low line with the converter's minimum efficiency. All relevant national and international safety standards and regulations must be observed by the installer. For system safety agency approvals, the converters must be installed in compliance with the requirements of the end- use safety standard, i.e. IEC/EN/UL60950-1. Input Reverse-Polarity Protection If the input voltage polarity is accidentally reversed, an internal diode will become forward biased and likely draw excessive current from the power source. If this source is not current limited or the circuit appropriately fused, it could cause permanent damage to the converter. I/O Filtering, Input Ripple Current, and Output Noise All models in the ULS Series are tested/specified for input reflected ripple current and output noise using the specified external input/output components/ circuits and layout as shown in the following two figures. External input capacitors (CIN in Figure 2) serve primarily as energy-storage elements, minimizing line voltage variations caused by transient IR drops in conductors from backplane to the DC/DC. Input caps should be selected for bulk capacitance (at appropriate frequencies), low ESR, and high rms-ripple-current ratings. The switching nature of DC/DC converters requires that dc voltage sources have low ac impedance as highly inductive source impedance can affect system stability. In Figure 2, CBUS and LBUS simulate a typical dc voltage bus. Your specific system configuration may necessitate additional considerations. TO OSCILLOSCOPE CURRENT PROBE +VIN LBUS + VIN CBUS CIN - Input Under-Voltage Shutdown and Start-Up Threshold Under normal start-up conditions, devices will not begin to regulate properly until the ramping-up input voltage exceeds the Start-Up Threshold Voltage. Once operating, devices will not turn off until the input voltage drops below the Under-Voltage Shutdown limit. Subsequent re-start will not occur until the input is brought back up to the Start-Up Threshold. This built in hysteresis prevents any unstable on/off situations from occurring at a single input voltage. Start-Up Time The VIN to VOUT Start-Up Time is the time interval between the point at which the ramping input voltage crosses the Start-Up Threshold and the fully loaded output voltage enters and remains within its specified accuracy band. Actual measured times will vary with input source impedance, external input capacitance, and the slew rate and final value of the input voltage as it appears at the converter. The ULS Series implements a soft start circuit to limit the duty cycle of its PWM controller at power up, thereby limiting the input inrush current. The On/Off Control to VOUT start-up time assumes the converter has its nominal input voltage applied but is turned off via the On/Off Control pin. The specification defines the interval between the point at which the converter is turned on (released) and the fully loaded output voltage enters and remains within its specified accuracy band. Similar to the VIN to VOUT start-up, the On/Off Control to VOUT start-up time is also governed by the internal soft start circuitry and external load capacitance. The difference in start up time from VIN to VOUT and from On/Off Control to VOUT is therefore insignificant. Input Source Impedance The input of ULS converters must be driven from a low ac-impedance source. The DC/DC's performance and stability can be compromised by the use of highly inductive source impedances. The input circuit shown in Figure 2 is a practical solution that can be used to minimize the effects of inductance in the input traces. For optimum performance, components should be mounted close to the DC/DC converter. -VIN CIN = 33F, ESR < 700m @ 100kHz CBUS = 220F, ESR < 100m @ 100kHz LBUS = 12H Figure 2. Measuring Input Ripple Current In critical applications, output ripple/noise (also referred to as periodic and random deviations or PARD) may be reduced below specified limits using filtering techniques, the simplest of which is the installation of additional external output capacitors. They function as true filter elements and should be selected for bulk capacitance, low ESR and appropriate frequency response. All external capacitors should have appropriate voltage ratings and be located as close to the converter as possible. Temperature variations for all relevant parameters should also be taken carefully into consideration. The most effective combination of external I/O capacitors will be a function of line voltage and source impedance, as well as particular load and layout conditions. Floating Outputs Since these are isolated DC/DC converters, their outputs are "floating" with respect to their input. Designers will normally use the -Output as the ground/ return of the load circuit. You can however, use the +Output as ground/return to effectively reverse the output polarity. Minimum Output Loading Requirements ULS converters employ a synchronous-rectifier design topology and all models regulate within spec and are stable under no-load to full load conditions. Operation under no-load conditions however might slightly increase the output ripple and noise. www.murata-ps.com/support MDC_ULS-30W_C04 Page 25 of 30 ULS 30-Watt Series Sixteenth-brick DOSA-Compatible, Isolated DC/DC Converters Short Circuit Condition When a converter is in current-limit mode, the output voltage will drop as the output current demand increases. If the output voltage drops too low, the magnetically coupled voltage used to develop primary side voltages will also drop, thereby shutting down the PWM controller. Following a time-out period, the PWM will restart causing the output voltage to begin ramping to their appropriate value. If the short-circuit condition persists, another shutdown cycle will be initiated. This on/off cycling is referred to as "hiccup" mode. The hiccup cycling reduces the average output current, thereby preventing internal temperatures from rising to excessive levels. The ULS Series is capable of enduring an indefinite short circuit output condition. +VOUT C1 C2 SCOPE RLOAD -VOUT C1 = 1F C2 = 10F LOAD 2-3 INCHES (51-76mm) FROM MODULE Figure 3. Measuring Output Ripple/Noise (PARD) Thermal Shutdown The ULS converters are equipped with thermal-shutdown circuitry. If environmental conditions cause the temperature of the DC/DC converter to rise above the designed operating temperature, a precision temperature sensor will power down the unit. When the internal temperature decreases below the threshold of the temperature sensor, the unit will self start. See Performance/Functional Specifications. Output Over-Voltage Protection The ULS output voltage is monitored for an over-voltage condition using a comparator. The signal is optically coupled to the primary side and if the output voltage rises to a level which could be damaging to the load, the sensing circuitry will power down the PWM controller causing the output voltage to decrease. Following a time-out period the PWM will restart, causing the output voltage to ramp to its appropriate value. If the fault condition persists, and the output voltage again climbs to excessive levels, the over-voltage circuitry will initiate another shutdown cycle. This on/off cycling is referred to as "hiccup" mode. Current Limiting As soon as the output current increases to approximately 130% of its rated value, the DC/DC converter will go into a current-limiting mode. In this condition, the output voltage will decrease proportionately with increases in output current, thereby maintaining somewhat constant power dissipation. This is commonly referred to as power limiting. Current limit inception is defined as the point at which the full-power output voltage falls below the specified tolerance. See Performance/Functional Specifications. If the load current, being drawn from the converter, is significant enough, the unit will go into a short circuit condition as described below. +VOUT -VIN ON/OFF CONTROL +VIN On/Off Control The input-side, remote On/Off Control function can be ordered to operate with either logic type: Positive ("P" suffix) logic models are enabled when the on/off pin is left open (or is pulled high, applying +10V to +15V with respect to -Input). Positive-logic devices are disabled when the on/off pin is pulled low (0 to 0.7V with respect to -Input). Negative ("N" suffix) logic devices are off when pin is left open (or pulled high, applying +2.5V to +15V), and on when pin is pulled low (-0.1 to 0.8V) with respect to -Input as shown in Figure 4. Dynamic control of the remote on/off function is best accomplished with a mechanical relay or an open-collector/open-drain drive circuit (optically isolated if appropriate). The drive circuit should be able to sink appropriate current (see Performance Specifications) when activated and withstand appropriate voltage when deactivated. Applying an external voltage to pin 2 when no input power is applied to the converter can cause permanent damage to the converter. +VIN +Vcc 13V CIRCUIT ON/OFF CONTROL -VIN Figure 4. Driving the Negative Logic On/Off Control Pin (simplified circuit) +VOUT -VIN TRIM LOAD RTRIM UP -VOUT Figure 5. Trim Connections To Increase Output Voltages. If units have sense pins, Connect trim to + Sense pin. 5V CIRCUIT ON/OFF CONTROL +VIN RTRIM DOWN TRIM LOAD -VOUT Figure 6. Trim Connections To Decrease Output Voltages. If units have sense pins, connect Trim to (-) Sense pins. www.murata-ps.com/support MDC_ULS-30W_C04 Page 26 of 30 ULS 30-Watt Series Sixteenth-brick DOSA-Compatible, Isolated DC/DC Converters Remote Sense (ULS-3.3/8-D48 and ULS-5/6-D48 models only) Note: The Sense and VOUT lines are internally connected through low-value resistors. Nevertheless, if the sense function is not used for remote regulation the user should connect the +Sense to +VOUT and -Sense to -VOUT at the DC/DC converter pins. ULS series converters employ a sense feature to provide point of use regulation, thereby overcoming moderate IR drops in PCB conductors or cabling. The remote sense lines carry very little current and therefore require minimal cross-sectional-area conductors. The sense lines, which are capacitively coupled to their respective output lines, are used by the feedback control-loop to regulate the output. As such, they are not low impedance points and must be treated with care in layouts and cabling. Sense lines on a PCB should be run adjacent to dc signals, preferably ground. Trim Equations Trim Down _( In cables and discrete wiring applications, twisted pair or other techniques should be used. Output over-voltage protection is monitored at the output voltage pin, not the Sense pin. Therefore, excessive voltage differences between VOUT and Sense in conjunction with trim adjustment of the output voltage can cause the over-voltage protection circuitry to activate (see Performance Specifications for over-voltage limits). Power derating is based on maximum output current and voltage at the converter's output pins. Use of trim and sense functions can cause output voltages to increase, thereby increasing output power beyond the converter's specified rating, or cause output voltages to climb into the output over-voltage region. Therefore, the designer must ensure: % - 10.22 VOUT - VNOM Where % x 100 VNOM )_ Trim Up RT UP (k:) = [VOUT(+)-VOUT(-)] - [Sense(+)-Sense(-)] d 10%VOUT 511 RT DOWN (k:) = 5.11 x VOUT x (100 + %) 1.225 x % _( VOUT - VNOM Where % x 100 VNOM - 511 - 10.22 % )_ Note: "%" is always a positive value. "VNOM" is the nominal, rated output voltage. "VOUT" is the desired, changed output voltage. (VOUT at pins) x (IOUT) d rated output power Contact and PCB resistance losses due to IR drops +VOUT -VIN IOUT +SENSE Sense Current ON/OFF CONTROL TRIM LOAD Sense Return -SENSE IOUT Return +VIN -VOUT Contact and PCB resistance losses due to IR drops Figure 7. Remote Sense Circuit Configuration www.murata-ps.com/support MDC_ULS-30W_C04 Page 27 of 30 ULS 30-Watt Series Sixteenth-brick DOSA-Compatible, Isolated DC/DC Converters Trimming by Using an External Voltage Source 1. The easiest way to trim the output using an external voltage source is to drive the Trim pin directly from a variable source. The following equation can be used to calculate the voltage at the Trim pin. Vtrim = 2 x 1.24 x Vo Vonominal - 1.24 Vo is the output voltage you want; Vonominal is the nominal output voltage; Vtrim is the voltage that should appear at the trim pin. 2. If the purpose of trimming is to compensate voltage drop of power path from converter to the Load, you may separately connect the sense pin directly to the load. It's much easier than real time adjusting trim voltage. +VIN +VOUT External source +SENSE ON/OFF CONTROL TRIM + - LOAD -SENSE -VIN -VOUT Figure 8. Trimming with an external source 3. CAUTION: To avoid unplanned power down cycles, do not exceed EITHER the maximum output voltage OR the maximum output power when setting the trim. If the output voltage is excessive, the OVP circuit may shut down the converter. If the maximum power is exceeded, the converter may enter current limiting. If the power is exceeded for an extended period, the converter may overheat and encounter overtemperature shut down. Be careful of external electrical noise. The Trim input is a sensitive input to the converter's feedback control loop. Excessive electrical noise may cause instability or oscillation. Through-hole Soldering Guidelines SMT Reflow Soldering Guidelines Murata Power Solutions recommends the TH soldering specifications below when installing these converters. These specifications vary depending on the solder type. Exceeding these specifications may cause damage to the product. Your production environment may differ; therefore please thoroughly review these guidelines with your process engineers. The surface-mount reflow solder profile shown below is suitable for SAC305 type leadfree solders. This graph should be used only as a guideline. Many other factors influence the success of SMT reflow soldering. Since your production environment may differ, please thoroughly review these guidelines with your process engineers. Wave Solder Operations for through-hole mounted products (THMT) For Sn/Ag/Cu based solders: Maximum Preheat Temperature 115 C. Maximum Pot Temperature 270 C. Maximum Solder Dwell Time 7 seconds For Sn/Pb based solders: Maximum Preheat Temperature 105 C. Maximum Pot Temperature 250 C. Maximum Solder Dwell Time 6 seconds www.murata-ps.com/support MDC_ULS-30W_C04 Page 28 of 30 ULS 30-Watt Series Sixteenth-brick DOSA-Compatible, Isolated DC/DC Converters Emissions Performance Murata Power Solutions measures its products for radio frequency emissions against the EN 55022 and CISPR 22 standards. Passive resistance loads are employed and the output is set to the maximum voltage. If you set up your own emissions testing, make sure the output load is rated at continuous power while doing the tests. [4] Conducted Emissions Test Results The recommended external input and output capacitors (if required) are included. Please refer to the fundamental switching frequency. All of this information is listed in the Product Specifications. An external discrete filter is installed and the circuit diagram is shown below. Test Card Resistive Load C4 L2 DC Source V+ Black C1 C2 UUT C3 Vin+ Vout+ C6 L1 V- Vin- Resistive Load inside a metal container Graph 1. ULS-3.3/8-D48N-C conducted emissions performance, Peak Detection Mode, CISPR/EN55022, Class B, full load at 48Vin Vout- C5 Figure 9. Conducted Emissions Test Circuit [1] Conducted Emissions Parts List Reference Part Number L1 L2 PE-62913 NC C1, C2 VZ Series C3 VZ Series C4, C5 Unknown C6 VZ Series Description 1mH, 6A 4.7uH, 3.6A Ceramic Capacitor (3.2uf) = 2.2ufd/1ufd in parallel, 100V Qty 2 - Electrolytic Capacitor 22ufd, 100V 3.3nF, 1500V Electrolytic Capacitor 33ufd, 100V Vendor Pulse Murata Panasonic Panasonic Unknown Panasonic [2] Conducted Emissions Test Equipment Used Rohde & Schwarz EMI Test Receiver (9KHz - 1000MHz) ESPC Rohde & Schwarz Software ESPC-1 Ver. 2.20 HP11947A Transient Limiter (Agilent) OHMITE 25W - Resistor combinations DC Source Programmable DC Power Supply Model 62012P-100-50 Graph 2. ULS-12/2.5-D48N-C conducted emissions performance, Peak Detection Mode, CISPR/EN55022, Class B, full load at 48Vin [3] Layout Recommendations Most applications can use the filtering which is already installed inside the converter or with the addition of the recommended external capacitors. For greater emissions suppression, consider additional filter components and/or shielding. Emissions performance will depend on the user's PC board layout, the chassis shielding environment and choice of external components. Please refer to Application Note GEAN-02 for further discussion. Since many factors affect both the amplitude and spectra of emissions, we recommend using an engineer who is experienced at emissions suppression. Graph 3. ULS-15/2-D48P-C conducted emissions performance, Peak Detection Mode, CISPR/EN55022, Class B, full load at 48Vin www.murata-ps.com/support MDC_ULS-30W_C04 Page 29 of 30 ULS 30-Watt Series Sixteenth-brick DOSA-Compatible, Isolated DC/DC Converters Vertical Wind Tunnel IR Transparent optical window Unit under test (UUT) Variable speed fan Murata Power Solutions employs a computer controlled custom-designed closed loop vertical wind tunnel, infrared video camera system, and test instrumentation for accurate airflow and heat dissipation analysis of power products. The system includes a precision low flow-rate anemometer, variable speed fan, power supply input and load controls, temperature gauges, and adjustable heating element. The IR camera monitors the thermal performance of the Unit Under Test (UUT) under static steady-state conditions. A special optical port is used which is transparent to infrared wavelengths. IR Video Camera Heating element Precision low-rate anemometer 3" below UUT Ambient temperature sensor Airflow collimator Figure 10. Vertical Wind Tunnel Murata Power Solutions, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151 U.S.A. ISO 9001 and 14001 REGISTERED Both through-hole and surface mount converters are soldered down to a host carrier board for realistic heat absorption and spreading. Both longitudinal and transverse airflow studies are possible by rotation of this carrier board since there are often significant differences in the heat dissipation in the two airflow directions. The combination of adjustable airflow, adjustable ambient heat, and adjustable Input/Output currents and voltages mean that a very wide range of measurement conditions can be studied. The collimator reduces the amount of turbulence adjacent to the UUT by minimizing airflow turbulence. Such turbulence influences the effective heat transfer characteristics and gives false readings. Excess turbulence removes more heat from some surfaces and less heat from others, possibly causing uneven overheating. Both sides of the UUT are studied since there are different thermal gradients on each side. The adjustable heating element and fan, built-in temperature gauges, and no-contact IR camera mean that power supplies are tested in real-world conditions. This product is subject to the following operating requirements and the Life and Safety Critical Application Sales Policy: Refer to: http://www.murata-ps.com/requirements/ Murata Power Solutions, Inc. makes no representation that the use of its products in the circuits described herein, or the use of other technical information contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein do not imply the granting of licenses to make, use, or sell equipment constructed in accordance therewith. Specifications are subject to change without notice. (c) 2012 Murata Power Solutions, Inc. www.murata-ps.com/support MDC_ULS-30W_C04 Page 30 of 30