UEI15 Series www.murata-ps.com Isolated Wide Input Range 15-Watt DC/DC Converters Featuring a full 15 Watt or greater output in one square inch of board area, the UEI series isolated DC/DC converter family offers efficient regulated DC power for printed circuit board mounting. Typical unit FEATURES PRODUCT OVERVIEW S mall footprint DC/DC converter, ideal for high current applications Wide range 4:1 inputs on the 0.96" x 1.1" x 0.32" converter are either 9 to 36 Volts DC (Q12 models) or 18 to 75 Volts DC (Q48 models), ideal for batterypowered and telecom equipment. The industrystandard pinout fits larger 1" x 2" converters. Fixed output voltages from 3.3 VDC to 15 VDC are regulated to within 0.2% or less and may be trimmed within 10% of nominal output. Applications include small instruments, area-limited microcontrollers, computer-based systems, data communications equipment, remote sensor systems, vehicle and portable electronics. The UEI 15W series includes full magnetic and optical isolation up to 2250 Volts DC (basic insulation). For connection to digital systems, the outputs offer fast settling to current step loads and tolerance of higher capacitive loads. Excellent ripple I ndustry standard 0.96" x 1.1" X 0.32" open frame package and pinout ide range input voltages 9-36 and 18-75 Vdc W A ssembly and attachment for RoHS standards I solation up to 2250 VDC (basic) p to 15 Watts or greater total output power U with overtemperature shutdown igh efficiency synchronous rectifier forward H topology Stable operation with no required external components sable -40 to 85C temperature range (with U derating) and noise specifications assure compatibility to circuits using CPU's, ASIC's, programmable logic and FPGA's. For systems requiring controlled startup/shutdown, an external switch, transistor or digital logic may be used to activate the remote On/Off control. A wealth of self-protection features avoid both converter and external circuit problems. 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 high efficiency offers minimal heat buildup and "no fan" operation. ertified to UL 60950-1, CAN/CSA-C22.2 No. C 60950-1, IEC60950-1, EN60950-1 safety approvals, 2nd edition E xtensive self-protection shut down features +VOUT +VIN -VOUT On/Off Control Control GATE DRIVE ISOLATION BARRIER -VIN ISOLATION Figure 1. Simplified block diagram--3.3V and 5VOUT models only. For full details go to www.murata-ps.com/rohs Reference, Trim & Error Amplifier TRIM Typical topology is shown. REG.-Nr. D806 www.murata-ps.com/support MDC_UEI15W.C11 Page 1 of 17 UEI15 Series Isolated Wide Input Range 15-Watt DC/DC Converters PERFORMANCE SPECIFICATIONS SUMMARY AND ORDERING GUIDE Output Input R/N (mVp-p) Regulation (Max.) Root Models VOUT IOUT Power (V) (A)e (W) UEI15-033-Q12 3.3 4.5 UEI15-033-Q48 3.3 5 UEI15-050-Q12 5 UEI15-050-Q48 5 UEI15-120-Q12 IIN = no VIN Nom. Range load (V) (V) (mA) Min. Typ. Typ. Max. Line Load 14.85 60 90 0.05% 0.1% 24 9-36 43 0.71 86.5% 89% 16.5 60 90 0.2% 0.2% 48 18-75 24 0.4 85.5% 88% 3 15 70 125 0.05% 0.075% 24 9-36 41 0.72 86.3% 87.3% 3 15 60 95 0.05% 0.06% 48 18-75 28 0.36 84.3% 86.0% 12 1.3 15.6 110 150 0.05% 0.05% 24 9-36 15 0.77 82.3% 84.5% UEI15-120-Q48 12 1.3 15.6 85 120 0.0 75% 0.05% 48 18-75 15 0.38 83.3% 85% UEI15-150-Q12 15 1.1 16.5 130 175 0.05% 0.05% 24 9-36 18 0.81 83.5% 85% UEI15-150-Q48 15 1.1 16.5 80 120 0.05% 0.05% 48 18-75 14 0.4 83.3% 85.3% Please refer to the part number structure for additional options and complete ordering part numbers. All specifications are typical at nominal line voltage and full load, +25 deg.C. unless otherwise noted. See detailed specifications. Open Frame Package - C75 Efficiency IIN = full load (A) (inches) (mm) Case Pinout 1.1x0.96x0.32 27.9x24.4x8.1 P85 Minimum output load for all models is 10% of maximum current. RoHS-6 compliance does not claim EU RoHS exemption 7b (lead in solder). PART NUMBER STRUCTURE UEI15 - 033 - Q12 P M H Lx - C Unipolar Wide Input 15-Watt Series Nominal Output Voltage in Tenths of a Volt Input Voltage Range Q12 = 9-36V Q48 = 18-75V RoHS-6 Hazardous Substance Compliance (note 4) Pin Length Option Blank = Std. pin length 0.25 (6.3mm) L1 = 0.110 (2.79mm)* L2 = 0.145 (3.68mm)* Conformal Coating Option Blank = No coating, standard H = Coating added, optional (Built to order; contact Murata Power Solutions for MOQ and lead times. Not available on SMT models.) Surface Mount Option Blank = Standard through-hole pin mount version M = SMT version (MSL rating 2) On/Off Control Logic: P = Positive N = Negative *Special quantity order is required; no sample quantities available. Note: Some model number combinations may not be available. Please contact Murata Power Solutions. SPECIAL MODEL NUMBERS: UEI-31204-C, Restricted AVL and surface mount www.murata-ps.com/support MDC_UEI15W.C11 Page 2 of 17 UEI15 Series Isolated Wide Input Range 15-Watt DC/DC Converters FUNCTIONAL SPECIFICATIONS INPUT CHARACTERISTICS Model Family UnderStart-up voltage threshold Shutdown V V UEI15-033-Q12 UEI15-033-Q48 UEI15-050-Q12 UEI15-050-Q48 UEI15-120-Q12 UEI15-120-Q48 UEI15-150-Q12 UEI15-150-Q48 Reflected (back) Ripple Inrush Current Transient mA pk-pk A2sec Input Current Min. Load mA Output Short Standby Circuit Low Line Mode mA A mA Recommended Fast-blow Fuse A 9.1 18 8.6 100 1.86 16.7 15.6 65 1.03 2 9.5 18 8.5 105 1.90 4 16.7 15.6 9.5 18 16.7 9.5 18 16.7 8.4 15.6 8.4 16.2 30 60 0.05 0.96 50 110 56 130 60 2.04 1.02 2.13 1.06 Remote On/Off Control Internal Reverse Input Polarity On/Off Positive Logic Negative Logic "N" model Filter Protec- Current blank model Type tion mA suffix suffix 4 1 C 2 L 4 1.5 4 2 C None. Install external fuse. See note 15. 1 OFF=Gnd pin or -0.7 to +0.7V max. ON=open pin or +10 to +15V max. OFF=open pin or +10 to + 15V max. ON=Gnd pin or -0.7 to +0.8V max. Model Family Efficiency Line/Load Regulation Ripple/Noise (20 MHz bandwidth)8 V 4.5 See Ordering Guide (Minimum load is 10% of Imax) 1,000 3.9 5.9 1 10 17 5.9 0.02 Magnetic feedback 14.1 470 See ordering guide 15 19.5 20 ISOLATION CHARACTERISTICS UEI15-033-Q12 UEI15-033-Q48 UEI15-050-Q12 UEI15-050-Q48 UEI15-120-Q12 UEI15-120-Q48 UEI15-150-Q12 UEI15-150-Q48 Overvoltage protection Voltage Output Range Model Family UEI15-033-Q12 UEI15-033-Q48 UEI15-050-Q12 UEI15-050-Q48 UEI15-120-Q12 UEI15-120-Q48 UEI15-150-Q12 UEI15-150-Q48 VOUT Accuracy Adjustment Temperature Capacitive Loading Max. 50% Load Range Coefficient Low ESR <0.02 Max, % of VNOM % of VNOM % of VOUT /C F IOUT 19 Max. mA OV protection method OUTPUT CHARACTERISTICS DYNAMIC CHARACTERISTICS Input to Output Min. Vdc Isolation Resistance Min. M Isolation Capacitance pF 2000 10 1000 2250 10 1500 2000 10 1500 2250 10 1000 2000 10 1000 2250 10 1000 2000 10 1500 2250 10 1000 Isolation Safety Rating Basic insulation Dynamic Load Start-up Time Peak Response (50-75-50% Deviation VIN to VOUT regulated Remote On/Off to VOUT Switching Frequency load step) Sec mV (Max.) mSec regulated max.) mSec Model Family KHz to 1% VOUT 150 125 350 UEI15-033-Q12 35 350 UEI15-033-Q48 UEI15-050-Q12 UEI15-050-Q48 UEI15-120-Q12 UEI15-120-Q48 UEI15-150-Q12 UEI15-150-Q48 100 60 350 30 150 100 50 150 50 375 340 200 350 125 340 175 380 MISCELLANEOUS CHARACTERISTICS Model Family Current Limit Short Inception 98% of Circuit Vout, after warmup Protection A Method Short Circuit Current A Short Circuit Duration (output shorted to ground) Operating Temperature Range Prebiased setup Calculated MTBF Hours UEI15-033-Q12 6.0 2 x 106 UEI15-033-Q48 7.2 3.49 x 106 UEI15-050-Q12 4.6 UEI15-050-Q48 4.5 UEI15-120-Q12 2.0 UEI15-120-Q48 1.8 Current limiting, hiccup autorestart See Derating Curves Storage Temperature Range C Thermal protection/ shutdown C 115 0.3 Continuous Monotonic 2 x 106 -40 to +85C 4.1 x 106 -55 to +125 C 135 6 UEI15-150-Q12 1.6 2.1 x 10 UEI15-150-Q48 1.7 2 x 106 115 cRemove overload for recovery. www.murata-ps.com/support MDC_UEI15W.C11 Page 3 of 17 UEI15 Series Isolated Wide Input Range 15-Watt DC/DC Converters ABSOLUTE MAXIMUM RATINGS Q12 models Input Voltage Q48 models Volts Max. continuous 36 VDC Volts, transient 100mS 50 VDC Volts Max. continuous 75 VDC Volts, transient 100mS 100 VDC Volts, Min. -0.3 On/Off control, referred to -VIN Volts, Max. Input Reverse Polarity Protection Output Overvoltage, Volts Max. VOUT nom. +20% Output Current, sustained short circuit Storage Temperature 15 See fuse section Current-limited, see specs Range, Min. C -55 Max. C +125 Absolute Maximum Ratings 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 is neither implied nor recommended. SPECIFICATION NOTES (1) All models are tested and specified with external capacitors listed in the table below. The external capacitors listed below are ONLY for establishing test specifications. They are required for our test fixtures and equipment. Your application may not need them. The converter is stable with no external capacitors but Murata Power Solutions strongly recommends external caps. All caps are low-ESR types. Where two or more capacitors are listed, these are connected in parallel. All caps should mount close to the DC/DC using short leads. All specifications are typical unless noted. General conditions for Specifications are +25 deg.C, VIN=nominal, VOUT=nominal, full load. Adequate airflow must be supplied for extended testing under power. (2) Input Ripple Current is tested and specified over a 5 Hz to 20 MHz bandwidth. Input filtering is CIN=33 F, 100V tantalum, CBUS=220 F, 100V electrolytic, LBUS=12 H. (3) Note that Maximum Power Derating curves indicate an average current at nominal input voltage. At higher temperatures and/or lower airflow, the DC/DC converter will tolerate brief full current outputs if the total RMS current over time does not exceed the Derating curve. All Derating curves are presented at sea level altitude. Be aware of reduced power dissipation with increasing density altitude. (4) Mean Time Before Failure is calculated using the Telcordia (Belcore) SR332 Method 1, Case 3, ground fixed conditions, Tpcboard=+25 deg.C, full load, natural air convection. (5) The On/Off Control is normally controlled by a switch. But it may also be driven with external logic or by applying appropriate external voltages which are referenced to Input Common. The On/Off Control Input should use either an open collector or open drain transistor. (6) Output current limiting begins when the output voltage degrades approximately 2% from the selected setting. (7) The outputs are not intended to sink appreciable reverse current. This may damage the outputs. (8) Output noise may be further reduced by adding an external filter. See I/O Filtering and Noise Reduction. (9) All models are fully operational and meet published specifications, including "cold start" at -40C. Root Models Conditions Minimum Typical Maximum Units All UEI15 Q12 Start up at -40C 10 10.5 11 Vdc (10) Regulation specifications describe the deviation as the line input voltage or output load current is varied from a nominal midpoint value to either extreme. (11) The output overvoltage protection is automatic recovery after fault removal. The overvoltage may occur either from internal failure or from an external forcing voltage as in a shared power system. (12) Output current limit and short circuit protection is non-latching. When the overcurrent fault is removed, the converter will immediately recover. (13) Do not exceed maximum power specifications when adjusting the output trim. (14) At zero output current, the output may contain low frequency components which exceed the ripple specification. The output may be operated indefinitely with no load. (15) If reverse polarity is accidentally applied to the input, to ensure reverse input protection with full output load, always connect an external input fuse in series with the +VIN input. Use approximately twice the full load input current rating at minimum input voltage. (16) "Hiccup" operation repeatedly attempts to restart the converter with a brief, full-current output. If the overcurrent condition still exists, the restart current will be removed and then tried again. This short current pulse prevents overheating and damaging the converter. Once the fault is removed, the converter immediately recovers normal operation. (17) On model UEI15-050-Q48, if VIN <20V, output trim may only be adjusted downwards from +5.0V (more negative). (18) Typical values shown. For minimum and maximum values see table below. INPUT/OUTPUT EXTERNAL TEST CAPACITORS Root Models Conditions Minimum Maximum Units Input Capacitor All UEI15 Q12 @+25C 8.8 10 Vdc Model Output Capacitor(s) UEI15-033-Q12 100 F 1 F & 10 F UEI15-033-Q48 4.7 F ceramic 1 F & 10 F UEI15-050-Q12 100 F 1 F & 10 F UEI15-050-Q48 4.7 F ceramic 1 F & 10 F UEI15-120-Q12 100 F 1 F & 10 F UEI15-120-Q48 4.7 F ceramic 1 F & 10 F UEI15-150-Q12 100 F 1 F & 10 F UEI15-150-Q48 4.7 F ceramic 1 F & 10 F CAUTION: This product is not internally fused. To comply with safety agency certifications and to avoid injury to personnel or equipment, the user must connect an external fast-blow fuse to the input terminals. See fuse information. (19) All models require 10% of Imax minimum output load to meet specifications. However, they will not be damaged at zero output load. www.murata-ps.com/support MDC_UEI15W.C11 Page 4 of 17 UEI15 Series Isolated Wide Input Range 15-Watt DC/DC Converters PERFORMANCE DATA UEI15-033-Q12 Efficiency vs. Line Voltage and Load Current @ 25C Maximum Current Temperature Derating @sea level (VIN = 12V or 24V, airflow from input to output) 90 5.5 85 5.0 80 4.5 Efficiency (%) Output Current (A ( mps) Vin = 36 V 75 Vin = 24 V 70 Vin = 18 V Vin = 9 V 65 60 Natural a Convection 4.0 3.5 3.0 2.5 55 50 2.0 0 0.5 1 1.5 2 2.5 3 3.5 4 40 45 50 55 60 65 70 75 80 85 80 85 A bient temperature (C) Am Load Current (Amps) UEI15-033-Q48 Efficiency vs. Line Voltage and Load Current @ 25C Maximum Current Temperature Derating @sea level (VIN = 24V, airflow from input to output) 90 5.10 85 4.90 Output Current (Amps) 75 Efficiency (%) Natural a Convection 0.5 m/s (100 LFM) 1.0 m/s (200 LFM) 1.5 m/s (300 ( LFM)) 4.70 80 Vin = 75 V 70 Vin = 48 V Vin = 18 V 65 4.50 4.30 4.10 3.90 60 3.70 55 3.50 40 45 50 55 60 65 70 75 A bient Temperature (C) Am 50 1 2 3 4 5 Load Current (Amps) UEI15-033-Q48 Maximum Current Temperature Derating @sea level (VIN = 48V, airflow from input to output) 5.20 Output Current (A ( mps) 5.00 Natural a Convection 0.5 m/s (100 LFM) 1.0 m/s (200 LFM) 1.5 m/s (300 LFM) 2.0 m/s ((400 LFM)) 4.80 4.60 4.40 4.20 4.00 3.80 40 45 50 55 60 65 70 75 80 85 A bient temperature (C) Am www.murata-ps.com/support MDC_UEI15W.C11 Page 5 of 17 UEI15 Series Isolated Wide Input Range 15-Watt DC/DC Converters PERFORMANCE DATA UEI15-050-Q12 Efficiency vs. Line Voltage and Load Current @ 25C Maximum Current Temperature Derating @Sea Level (VIN = 24V, airflow is from pin 1 to pin 3) 100 4 90 Output Current (Amps) Efficiency (%) 80 70 Vin = 36 V 60 Vin = 24 V 50 Vin = 18 V 40 Vin = 9 V 3 0.33 m/s (65 LFM) 2 1 30 20 0 20 25 30 35 40 45 50 55 60 65 70 75 80 85 10 0.25 0.5 0.75 1 1.25 1.5 1.75 2 2.25 2.5 2.75 Ambient Temperature (C) 3 Load Current (Amps) UEI15-050-Q48 Maximum Current Temperature Derating @Sea Level (VIN = 24V or 48V, airflow is from input to output) Efficiency vs. Line Voltage and Load Current @ 25C 100 90 80 70 60 50 40 30 20 10 0 3.20 Output Current (Amps) Efficiency (%) 3.10 Vin = 75 V Vin = 36 V Vin = 24 V Vin = 18 V 3.00 Natural Convection 2.90 2.80 2.70 2.60 2.50 40 0 0.5 1 1.5 2 2.5 45 50 3 55 60 65 70 75 80 85 Ambient Temperature (C) Load Current (Amps) UEI15-120-Q12 Efficiency vs. Line Voltage and Load Current @ 25C Maximum Current Temperature Derating @Sea Level (VIN = 24V, airflow is from pin 1 to pin 3) 90 1.5 80 Vin = 36 V Vin = 24 V Vin = 18 V Vin = 9 V 75 70 65 Output Current (Amps) Efficiency (%) 85 0.33 m/s (65 LFM) 1 0.5 0 60 20 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 1.1 1.2 1.3 25 30 35 40 45 50 55 60 65 70 75 80 85 Ambient Temperature (C) Load Current (Amps) www.murata-ps.com/support MDC_UEI15W.C11 Page 6 of 17 UEI15 Series Isolated Wide Input Range 15-Watt DC/DC Converters PERFORMANCE DATA UEI15-120-Q48 Efficiency vs. Line Voltage and Load Current @ 25C 90 Maximum Current Temperature Derating @Sea Level (VIN = 24V or 48V, airflow is from pin 2 to pin 1) 88 1.3 86 Vin = 75 V Vin = 48 V Vin = 24 V Vin = 18 V 82 80 1.1 Output Current (Amps) Efficiency (%) Natural Convection 1.2 84 78 76 1.0 0.9 0.8 0.7 74 0.6 72 0.5 40 45 50 55 60 65 70 75 80 85 70 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 1.1 1.2 Ambient Temperature (C) 1.3 Load Current (Amps) UEI15-150-Q12 Efficiency vs. Line Voltage and Load Current @ 25C Maximum Current Temperature Derating @Sea Level (VIN = 12V and 24V, airflow is from input to output) 1.15 88 1.10 Output Current (Amps) 90 86 Efficiency (%) 84 82 Vin = 36 V Vin = 24 V Vin = 9 V 80 78 Natural Convection 1.05 1.00 0.95 0.90 0.85 76 0.80 40 74 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 45 50 1.1 55 60 65 70 75 80 85 80 85 Ambient Temperature (C) Load Current (Amps) UEI15-150-Q48 Efficiency vs. Line Voltage and Load Current @ 25C Maximum Current Temperature Derating @Sea Level (VIN = 24V and 48V, airflow is from input to output) 95 1.15 90 Output Current (Amps) 1.10 Efficiency (%) 85 80 75 Vin = 75 V Vin = 48 V Vin = 24 V Vin = 18 V 70 65 Natural Convection 1.05 1.00 0.95 0.90 0.85 60 0.80 0.07 0.18 0.28 0.38 0.49 0.59 Load Current (Amps) 0.69 0.80 0.90 1.00 1.10 40 45 50 55 60 65 70 75 Ambient Temperature (C) www.murata-ps.com/support MDC_UEI15W.C11 Page 7 of 17 UEI15 Series Isolated Wide Input Range 15-Watt DC/DC Converters MECHANICAL SPECIFICATIONS, OPEN FRAME TOP VIEW 27.9 1.10 Case 75 PHYSICAL CHARACTERISTICS Pin Material PIN #1 Copper alloy Pin Diameter 0.04 (1.016mm) Pin Finish Gold plate Through Hole Pin Material Copper alloy TH Pin Plating Metal and Thickness 24.4 0.96 Nickel subplate 50 -inches Gold overplate 5 -inches Weight 0.352 oz./10 grams Electromagnetic Interference EN55022/CISPR22 (see note 1) (Requires external filter) Flammability Rating UL 94V-0 Safety Certified to UL/cUL 60950-1, CAN/CSAC22.2-60950-1, IEC/EN 60950-1, 2nd edition SIDE VIEW MOUNTING PLANE 8.1 0.32 MAX .040.002 .071 .002 SHOULDER 6X AT PINS 1-6 BOTTOM VIEW END VIEW CL #5 #6 10.16 0.400 .30 10.16 0.400 CL 10.16 0.400 RECOMMENDED PRI-SEC BARRIER #4 0.475 REF #2 1 #1 5.08 0.200 CL #3 0.58 20.32 0.800 Standard pin length is shown. Please refer to the Ordering Guide for alternate pin lengths. +Vin 2 -Vin 3 +Vout 4 Output Trim 5 -Vout 6 On/Off Control* *The Remote On/Off can be provided with either positive (P suffix) or negative (N suffix) logic 0.41 0.15 TYP INPUT/OUTPUT CONNECTIONS Pin Function 2.54 0.100 6.3 0.25 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_UEI15W.C11 Page 8 of 17 UEI15 Series Isolated Wide Input Range 15-Watt DC/DC Converters SHIPPING TRAYS AND BOXES, THROUGH-HOLE MOUNT Anti-static foam Label Label Each tray is 6 x 5 units (30 units per tray) SHIPPING TRAY DIMENSIONS UEI modules are supplied in a 30-piece (6 x 5) shipping tray. The tray is an anti-static closed-cell polyethylene foam. Dimensions are shown below. 6.4 Typ [9.92] 252.0 28.4 Typ 6.4 Typ 18.0 5x 38.1 25.4 Typ [9.92] 252.0 190.5 Ref R 6.4 Typ A 252.0 Ref A 9.5 deep Ref 4x 44.5 22.9 252.0 Ref 177.8 Ref 19.1 Ref 9.5 [.38 in] Pocket Depth 19.1 [.75 in] SECTION A-A Notes: 1. Material: Dow 220 antistat ethafoam (Density: 34-35 kg/m3) 2. Dimensions: 252 x 252 x 19.1 mm 6 x 5 array (30 per tray) 3. All dimensions in millimeters [inches] 4. Tolerances unless otherwise specified: +1/-0 www.murata-ps.com/support MDC_UEI15W.C11 Page 9 of 17 UEI15 Series Isolated Wide Input Range 15-Watt DC/DC Converters MECHANICAL SPECIFICATIONS, SURFACE MOUNT PACKAGE (MSL RATING 2) TOP VIEW 27.9 1.10 Dimensions are in inches (mm shown for ref. only). Third Angle Projection INPUT/OUTPUT CONNECTIONS Pin Function 1 PIN #1 24.4 0.96 Tolerances (unless otherwise specified): .XX 0.02 (0.5) .XXX 0.010 (0.25) Angles 1 +Vin 2 -Vin 3 +Vout 4 Output Trim 5 -Vout 6 On/Off Control* *The Remote On/Off can be provided with either positive (P suffix) or negative (N suffix) logic Components are shown for reference only. SIDE VIEW MOUNTING PLANE .093 TYP BOTTOM VIEW CL #5 10.16 0.400 END VIEW #6 0.34 MAX #2 10.16 0.400 CL 10.16 0.400 #4 2.54 0.100 #1 CL #3 2.54 0.100 20.32 0.800 .093 0.13 REF www.murata-ps.com/support MDC_UEI15W.C11 Page 10 of 17 UEI15 Series Isolated Wide Input Range 15-Watt DC/DC Converters MECHANICAL SPECIFICATIONS, SURFACE MOUNT PACKAGE 29.0 1.14 CL 3 25.4 1.00 2.54 0.100 10.16 0.400 1 CL 4 10.16 0.400 2 5 2.54 0.100 6 6X 2.60 0.25 .102 .010 20.32 0.800 RECOMMENDED SMT PAD LAYOUT SURFACE MOUNT TAPE AND REEL INFORMATION (MSL RATING 2) PACKAGING CONFORMS TO EIA-481 CONVERTERS SHIPPING IN QUANTITIES OF 100 PER REEL NOTE: The SMT package has an MSL 2 rating. 3.00 0.118 2.00 0.079 5.0mm PICK & PLACE LOCATION 23.10 0.909 56.0 2.20 32.00 1.260 13.0 DIRECTION OF FEED COVER TAPE R.256 9.27 0.365 Dimensions in inches [mm] SURFACE MOUNT TAPE AND REEL www.murata-ps.com/support MDC_UEI15W.C11 Page 11 of 17 UEI15 Series Isolated Wide Input Range 15-Watt DC/DC Converters TECHNICAL NOTES Input Fusing Certain applications and/or safety agencies may require fuses at the inputs of power conversion components. Fuses should also be used when there is the possibility of sustained input voltage reversal which is not current-limited. For greatest safety, we recommend a fast blow fuse installed in the ungrounded input supply line. The installer must observe all relevant safety standards and regulations. For safety agency approvals, install the converter in compliance with the end-user safety standard, i.e. IEC/EN/UL 60950-1. Input Reverse-Polarity Protection If the input voltage polarity is 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. Input Under-Voltage Shutdown and Start-Up Threshold Under normal start-up conditions, converters will not begin to regulate properly until the ramping-up input voltage exceeds and remains at the Start-Up Threshold Voltage (see Specifications). Once operating, converters will not turn off until the input voltage drops below the Under-Voltage Shutdown Limit. Subsequent restart will not occur until the input voltage rises again above the Start-Up Threshold. This built-in hysteresis prevents any unstable on/off operation at a single input voltage. Users should be aware however of input sources near the Under-Voltage Shutdown whose voltage decays as input current is consumed (such as capacitor inputs), the converter shuts off and then restarts as the external capacitor recharges. Such situations could oscillate. To prevent this, make sure the operating input voltage is well above the UV Shutdown voltage AT ALL TIMES. Start-Up Time Assuming that the output current is set at the rated maximum, the VIN to VOUT Start-Up Time (see Specifications) is the time interval between the point when the ramping input voltage crosses the Start-Up Threshold and the fully loaded regulated output voltage enters and remains within its specified accuracy band. Actual measured times will vary with input source impedance, external input capacitance, input voltage slew rate and final value of the input voltage as it appears at the converter. These converters include a soft start circuit to moderate the duty cycle of its PWM controller at power up, thereby limiting the input inrush current. The On/Off Remote Control interval from On command to VOUT regulated assumes that the converter already has its input voltage stabilized above the Start-Up Threshold before the On command. The interval is measured from the On command until the output enters and remains within its specified accuracy band. The specification assumes that the output is fully loaded at maximum rated current. Similar conditions apply to the On to VOUT regulated specification such as external load capacitance and soft start circuitry. Input Source Impedance These converters will operate to specifications without external components, assuming that the source voltage has very low impedance and reasonable in- put voltage regulation. Since real-world voltage sources have finite impedance, performance is improved by adding external filter components. Sometimes only a small ceramic capacitor is sufficient. Since it is difficult to totally characterize all applications, some experimentation may be needed. Note that external input capacitors must accept high speed switching currents. Because of the switching nature of DC/DC converters, the input of these converters must be driven from a source with both low AC impedance and adequate DC input regulation. Performance will degrade with increasing input inductance. Excessive input inductance may inhibit operation. The DC input regulation specifies that the input voltage, once operating, must never degrade below the Shut-Down Threshold under all load conditions. Be sure to use adequate trace sizes and mount components close to the converter. I/O Filtering, Input Ripple Current and Output Noise All models in this converter series are tested and specified for input reflected ripple current and output noise using designated external input/output components, circuits and layout as shown in the figures below. External input capacitors (Cin in the figure) serve primarily as energy storage elements, minimizing line voltage variations caused by transient IR drops in the input conductors. Users should select input capacitors for bulk capacitance (at appropriate frequencies), low ESR and high RMS ripple current ratings. In the figure below, the Cbus and Lbus components simulate a typical DC voltage bus. Your specific system configuration may require additional considerations. Please note that the values of Cin, Lbus and Cbus will vary according to the specific converter model. In critical applications, output ripple and noise (also referred to as periodic and random deviations or PARD) may be reduced by adding filter elements such as multiple external capacitors. Be sure to calculate component temperature rise from reflected AC current dissipated inside capacitor ESR. TO OSCILLOSCOPE CURRENT PROBE +VIN VIN + - + - LBUS CBUS CIN -VIN CIN = 33F, ESR < 700m @ 100kHz CBUS = 220F, ESR < 100m @ 100kHz LBUS = 12H Figure 2. Measuring Input Ripple Current Floating Outputs Since these are isolated DC/DC converters, their outputs are "floating" with respect to their input. The essential feature of such isolation is ideal ZERO CURRENT FLOW between input and output. Real-world converters however do exhibit tiny leakage currents between input and output (see Specifications). These leakages consist of both an AC stray capacitance coupling component www.murata-ps.com/support MDC_UEI15W.C11 Page 12 of 17 UEI15 Series Isolated Wide Input Range 15-Watt DC/DC Converters C1 C2 SCOPE RLOAD C1 = 1F C2 = 10F LOAD 2-3 INCHES (51-76mm) FROM MODULE Figure 3. Measuring Output Ripple and Noise (PARD) and a DC leakage resistance. When using the isolation feature, do not allow the isolation voltage to exceed specifications. Otherwise the converter may be damaged. Designers will normally use the negative output (-Output) as the ground return of the load circuit. You can however use the positive output (+Output) as the ground return to effectively reverse the output polarity. Minimum Output Loading Requirements These converters employ a synchronous rectifier design topology. Models UEI15-033-Q12, UEI15-120-Q12, and UEI15-050-Q12 require 10% minimum load to meet specifications. Operation under less than 10% load may slightly increase regulation, ripple, and noise. Thermal Shutdown To prevent many over temperature problems and damage, these converters include thermal shutdown circuitry. If environmental conditions cause the temperature of the DC/DC's to rise above the Operating Temperature Range up to the shutdown temperature, an on-board electronic temperature sensor will power down the unit. When the temperature decreases below the turn-on threshold, the converter will automatically restart. There is a small amount of hysteresis to prevent rapid on/off cycling. CAUTION: If you operate too close to the thermal limits, the converter may shut down suddenly without warning. Be sure to thoroughly test your application to avoid unplanned thermal shutdown. Temperature Derating Curves The graphs in this data sheet illustrate typical operation under a variety of conditions. The Derating curves show the maximum continuous ambient air temperature and decreasing maximum output current which is acceptable under increasing forced airflow measured in Linear Feet per Minute ("LFM"). Note that these are AVERAGE measurements. The converter will accept brief increases in temperature and/or current or reduced airflow as long as the average is not exceeded. Note that the temperatures are of the ambient airflow, not the converter itself which is obviously running at higher temperature than the outside air. Also note that "natural convection" is defined as very flow rates which are not using fan-forced airflow. Depending on the application, "natural convection" is usually about 30-65 LFM but is not equal to still air (0 LFM). MPS makes Characterization measurements in a closed cycle wind tunnel with calibrated airflow. We use both thermocouples and an infrared camera system to observe thermal performance. As a practical matter, it is quite difficult to insert an anemometer to precisely measure airflow in most applications. Sometimes it is possible to estimate the effective airflow if you thoroughly understand the enclosure geometry, entry/exit orifice areas and the fan flowrate specifications. If in doubt, contact MPS to discuss placement and measurement techniques of suggested temperature sensors. CAUTION: If you routinely or accidentally exceed these Derating guidelines, the converter may have an unplanned Over Temperature shut down. Also, these graphs are all collected at slightly above Sea Level altitude. Be sure to reduce the derating for higher density altitude. Output Overvoltage Protection This converter monitors its output voltage for an over-voltage condition using an on-board electronic comparator. The signal is optically coupled to the primary side PWM controller. If the output exceeds OVP limits, the sensing circuit will power down the unit, and the output voltage will decrease. After a time-out period, the PWM will automatically attempt to restart, causing the output voltage to ramp up to its rated value. It is not necessary to power down and reset the converter for the this automatic OVP-recovery restart. If the fault condition persists and the output voltage climbs to excessive levels, the OVP circuitry will initiate another shutdown cycle. This on/off cycling is referred to as "hiccup" mode. It safely tests full current rated output voltage without damaging the converter. Output Fusing The converter is extensively protected against current, voltage and temperature extremes. However your output application circuit may need additional protection. In the extremely unlikely event of output circuit failure, excessive voltage could be applied to your circuit. Consider using an appropriate fuse in series with the output. Output Current Limiting As soon as the output current increases to approximately 125% to 150% of its maximum rated value, the DC/DC converter will enter a current-limiting mode. The output voltage will decrease proportionally with increases in output current, thereby maintaining a somewhat constant power output. This is commonly referred to as power limiting. Current limiting inception is defined as the point at which full power falls below the rated tolerance. See the Performance/Functional Specifications. Note particularly that the output current may briefly rise above its rated value. This enhances reliability and continued operation of your application. If the output current is too high, the converter will enter the short circuit condition. Output 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 up to its appropriate value. If the short-circuit condition persists, another shutdown cycle will initiate. This on/off cycling is called "hiccup mode". The hiccup cycling www.murata-ps.com/support MDC_UEI15W.C11 Page 13 of 17 UEI15 Series Isolated Wide Input Range 15-Watt DC/DC Converters reduces the average output current, thereby preventing excessive internal temperatures. A short circuit can be tolerated indefinitely. Trimming the Output Voltage The Trim input to the converter allows the user to adjust the output voltage over the rated trim range (please refer to the Specifications). In the trim equations and circuit diagrams that follow, trim adjustments use either a trimpot or a single fixed resistor connected between the Trim input and either the positive or negative output terminals. (On some converters, an external user-supplied precision DC voltage may also be used for trimming). Trimming resistors should have a low temperature coefficient (100 ppm/deg.C or less) and be mounted close to the converter. Keep leads short. If the trim function is not used, leave the trim unconnected. With no trim, the converter will exhibit its specified output voltage accuracy. +VOUT -VIN ON/OFF CONTROL +VIN TRIM +VOUT -VIN ON/OFF CONTROL TRIM LOAD R TRIM UP +VIN -VOUT Figure 6. Trim adjustments to increase Output Voltage using a Fixed Resistor CAUTION: Be careful of external electrical noise. The Trim input is a senstive input to the converter's feedback control loop. Excessive electrical noise may cause instability or oscillation. Keep external connections short to the Trim input. Use shielding if needed. 7 5-22 TURNS LOAD Trim Equations Trim Up Trim Down <Connect trim resistor between Trim and -VOUT> <Connect trim resistor between Trim and +VOUT> -VOUT UEI15-033-Q12, Q48 Figure 4. Trim adjustments using a trimpot RTUP (:) = 12775 VO - 3.3 - 2050 RTDOWN (:) = 5110 (Vo - 2.5) 3.3 - VO - 2050 UEI15-050-Q12, Q48 -VIN +VOUT RTUP (:) = 12775 VO - 5 - 2050 RTDOWN (:) = 5110 (Vo - 2.5) 5 - VO - 2050 UEI15-120-Q12, Q48 ON/OFF CONTROL LOAD TRIM RTRIM DOWN RTUP (:) = 25000 VO - 12 - 5110 RTDOWN (:) = 10000 (Vo-2.5) 12 - VO - 5110 UEI15-150-Q12, Q48 +VIN -VOUT RTUP (:) = 25000 VO - 15 - 5110 RTDOWN (:) = 10000 (Vo-2.5) 15 - VO - 5110 Figure 5. Trim adjustments to decrease Output Voltage using a Fixed Resistor There are two CAUTIONs to be aware for the Trim input: CAUTION: To avoid unplanned power down cycles, do not exceed EITHER the maximum output voltage OR the maximum output power when setting the trim. Be particularly careful with a trimpot. If the output voltage is excessive, the OVP circuit may inadvertantly 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. Where Vo = Desired output voltage. Adjustment accuracy is subject to resistor tolerances and factory-adjusted output accuracy. Mount trim resistor close to converter. Use short leads. Remote On/Off Control On the input side, a remote On/Off Control can be ordered with either logic type. Positive-logic models are enabled when the On/Off pin is left open or is pulled high to +15V max. with respect to -VIN. Some models will also turn on at lower intermediate voltages (see Specifications). Positive-logic devices are www.murata-ps.com/support MDC_UEI15W.C11 Page 14 of 17 UEI15 Series Isolated Wide Input Range 15-Watt DC/DC Converters disabled when the On/Off is grounded or brought to within a low voltage (see Specifications) with respect to -VIN. Negative-logic devices are on (enabled) when the On/Off is grounded or brought to within a low voltage (see Specifications) with respect to -VIN. The device is off (disabled) when the On/Off is left open or is pulled high to +15VDC max. with respect to -VIN. Dynamic control of the On/Off function should be able to sink appropriate signal current when brought low and withstand appropriate voltage when brought high. Be aware too that there is a finite time in milliseconds (see Specifications) between the time of On/Off Control activation and stable, regulated output. This time will vary slightly with output load type and current and input conditions. There are three CAUTIONs for the On/Off Control: CAUTION: To retain full output circuit isolation, control the On/Off from the input side ONLY. If you must control it from circuits in the output, use some form of optoisolation to the On/Off Control. This latter condition is unlikely because the device controlling the On/Off would have to remain powered on and not be powered from the converter. CAUTION: While it is possible to control the On/Off with external logic if you carefully observe the voltage levels, the preferred circuit is either an open drain/open collector transistor, a switch or a relay (which can thereupon be controlled by logic). Through-hole 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. 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 SMT Reflow Soldering Guidelines 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. CAUTION: Do not apply voltages to the On/Off pin when there is no input power voltage. Otherwise the converter may be permanently damaged. + Vcc ON/OFF CONTROL CONTROL -VIN Figure 7. Driving the On/Off Control Pin (suggested circuit) www.murata-ps.com/support MDC_UEI15W.C11 Page 15 of 17 UEI15 Series Isolated Wide Input Range 15-Watt 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. [3] 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. UEI15-050-Q12P-C EMI 15W Test Card 24Vdc in, 5Vout, 3Amps Resistive Load UUT V+ Black C1 C1 C1 C1 C1 L1 C1 C1 C1 Vin + Vout + Vin - Vout - C1 L2 V- C2 Resistive Load inside a metal container Graph 1. Conducted emissions performance, CISPR/EN55022, Class B, full load, filtered Figure 8. Conducted Emissions Test Circuit [1] Conducted Emissions Parts List Reference L2 L1 C1 C2 Part Number Description Vendor PE-62913 500uH,10A, MPS 1mH, 6A 500uH,10A Ceramic 2.2ufd, 100V Electrolytic Capacitor 33ufd, 100V Pulse Murata Murata 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 Graph 1. Conducted emissions performance, CISPR/EN55022, Class B, full load, unfiltered DC Source Power Supply - Kikisui Model PAD 55-6L [4] 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 GEAN02 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. www.murata-ps.com/support MDC_UEI15W.C11 Page 16 of 17 UEI15 Series Isolated Wide Input Range 15-Watt DC/DC Converters Vertical Wind Tunnel IR Transparent optical window Unit under test (UUT) Variable speed fan IR Video Camera 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. Heating element Precision low-rate anemometer 3" below UUT Ambient temperature sensor Airflow collimator Figure 9. 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. 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