DRQ-12/42-D48 Series www.murata-ps.com To Be Discontinued * 500W Digital Fully Regulated Intermediate DC-DC Bus Converter PRODUCT OVERVIEW Typical unit Typic FEATURES Fixed DC outputs, 11.5V @43.5A Advanced Bus Converter industry standard quarter-brick with digital PMBusTM interface Optional five pin version (DOSA compatible pinouts) 38 to 75 Volt DC input range (48 VDC nominal) The DRQ 500W series provides a fully regulated, digitally controlled DC output in a 1/4-brick format that will support the evolving Advanced Bus Converter (ABC) industry standard footprint for isolated v bboard mounted power modules. The DRQ series ssupports advances in power conversion technology iincluding a digital interface supporting the PMBus protocol for communications to power modules. p The DRQ series offers high output current (up to 443.5 Amps) in an industry standard "quarter brick" ppackage. The DRQ series is an isolated, regulated, 500W-11.5Vout quarter brick that supports the TNV input voltage range of 38V-75V with a typical efficiency of 95.5%. Advanced automated surface mount assembly and planar magnetics deliver galvanic isolation rated at 2250 Vdc for functional insulation. Target markets include networking equipment, Power over Ethernet applications, wireless networking equipment, telecommunications equipment, wireless pre-amplifiers, industrial and test equipment, and applications requiring a regulated 11.5V output. A wealth of self-protection features include input undervoltage lockout and overtemperature shutdown; over current protection using the "hiccup" autorestart technique provides indefinite shortcircuit protection, along with output OVP. The DRQ series is certified to safety standards UL/IEC/CSA 60950-1, 2nd edition. It meets RFI/EMI conducted emission compliance to EN55022, CISPR22 with an external filter. Remote ON/Off enable control High efficiency (95.5%) Stable no-load operation Monotonic startup into pre-bias output condition APPLICATIONS Certified to UL 60950-1, CSA-C22.2 No. 609501, 2nd edition safety approvals Extensive self-protection, OVP, input undervoltage, current limiting and thermal shutdown Embedded systems, datacom and telecom installations, wireless base stations Disk farms, data centers and cellular repeater sites F1 Remote sensor systems, dedicated controllers Instrumentation systems, R&D platforms, automated test fixtures Data concentrators, voice forwarding and speech processing systems +Vin (1) +Vout (8) Barrier External DC Power Source On/Off Control (2) Open = On Controller and Power Reference and Error Amplifier logic) -Vin (3) -Vout (4) Figure 1. Connection Diagram (without digital interface) Typical topology is shown. Murata Power Solutions recommends an external fuse. For full details go to www.murata-ps.com/rohs www.murata-ps.com/support MDC_DRQ-12/42-D48.A04 Page 1 of 24 * Last Time Buy date is 3/31/2019. Please click here to view the Discontinuance Notification. DRQ-12/42-D48 Series 500W Digital Fully Regulated Intermediate DC-DC Bus Converter PERFORMANCE SPECIFICATIONS SUMMARY AND ORDERING GUIDE Output Root Model DRQ-12/42-D48 Input R/N (mV VOUT IOUT Power pk-pk) (Volts, (Amps, (Watts, max.) max.) max.) Typ. Max. Line Load 11.85 100 100 43.5 515.5 80 120 Regulation (mV, max.) IIN full VIN Nom. Range IIN no load Efficiency (Volts) (Volts) load (mA) (Amps) Typ. Please refer to the part number structure for additional ordering information and options. All specifications are typical at nominal line voltage and full load, +25C unless otherwise noted. See 48 38-75 130 11.39 Dimensions with baseplate 95.5% (inches) (mm) 2.3 x 1.45 x 0.52 58.4 x 36.8 x 13.21 detailed specifications. Output capacitors are 1 F || 10 F. These caps are necessary for our test equipment and may not be needed for your application. PART NUMBER STRUCTURE DRQ - 12 / 42 - D48 N B A Lx - C RoHS Hazardous Materials compliance C = RoHS-6 (does not claim EU RoHS exemption 7b-lead in solder), standard Digital Regulated Quarter-brick Nominal Output Voltage Maximum Rated Output Current in Amps Input Voltage Range: D48 = 38-75 Volts (48V nominal) On/Off Control Logic N = Negative logic P = Positive logic Pin length option Blank = Standard pin length 0.180 in. (4.6 mm) L1 = 0.110 in. (2.79 mm) L2 = 0.145 in. (3.68 mm) A = PMBusTM (ABC 16-pin pinout) Blank = No PMBusTM (DOSA 5-pin pinout) Baseplate or Integrated Heat Sink (optional) B = Baseplate installed K = Integrated Heat Sink Special quantity order is required; samples available with standard pin length only. Some model number combinations may not be available. See website or contact your local Murata sales representative. DRQ-12/42-D48NKL1-C Complete Model Number Example: Negative On/Off logic, Integrated Heat Sink installed, 0.110 pin length, RoHS-6 compliance www.murata-ps.com/support MDC_DRQ-12/42-D48.A04 Page 2 of 24 DRQ-12/42-D48 Series 500W Digital Fully Regulated Intermediate DC-DC Bus Converter FUNCTIONAL SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS Input Voltage, Continuous Input Voltage, Transient Isolation Voltage On/Off Remote Control Output Power Conditions Minimum Typical/Nominal 0 100 mS max. duration Input to output Power on, referred to -Vin 0 0 Maximum Units 80 100 2250 13.5 515.5 Vdc Vdc Vdc Vdc W Current-limited, no damage, short-circuit 0 43.5 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 INPUT Operating voltage range Recommended External Fuse Start-up threshold: (measured @ no load) Undervoltage shutdown: (measured @ no load) Internal Filter Type Input current Full Load Conditions Low Line Inrush Transient Short Circuit Input Current No Load Input Current Shut-Down Input Current (Off, UV, OT) Reflected (back) ripple current Pre-biased startup Conditions 38 Fast blow Rising input voltage Falling input voltage 37 35 Vin = nominal Vin = minimum 48 25 37.5 35.5 Pi Measured at input with specified filter External output voltage < Vset 11.39 14.55 0.15 0.05 130 10 40 Monotonic Vin = 48V, full load Vin = min., full load 95.5 95.5 Iout = minimum, unit = ON 75 38 36 Vdc A Vdc Vdc 11.68 14.63 0.30 0.1 200 20 70 A A A2-Sec. A mA mA mA, p-p GENERAL and SAFETY Efficiency Isolation Isolation Voltage Isolation Voltage Isolation Voltage Insulation Safety Rating Isolation Resistance Isolation Capacitance Safety Calculated MTBF Input to output Input to baseplate Output to baseplate % % 2250 1500 1500 Functional 10 1500 Certified to UL-60950-1, CSA-C22.2 No. 609501, IEC/60950-1, 2nd edition Per Telcordia SR332, issue 1, class 3, ground fixed, Tambient = +25C Vdc Vdc Vdc M pF Yes Hours x 106 1.3 DYNAMIC CHARACTERISTICS Switching Frequency Vin Start up delay time Enable Start up delay time Rise time Vout Fall Time of Regulated Off: (from 100% to 0%) Dynamic Load Response Dynamic Load Peak Deviation Variable frequency control (default) 18 50-75-50% load step, settling time to within 1% of Vout (Cout=1000F) same as above 175-250 25 3 15 30 5 20 KHz mS mS mS 20 22 mS 200 300 Sec 400 600 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 ON = Ground pin or external voltage OFF = Pin open or external voltage Open collector/drain -0.1 3.5 0.8 13.5 5 V V mA ON = Pin open or external voltage OFF = Ground pin or external voltage Open collector/drain 3.5 0 13.5 0.8 1 V V mA www.murata-ps.com/support MDC_DRQ-12/42-D48.A04 Page 3 of 24 DRQ-12/42-D48 Series 500W Digital Fully Regulated Intermediate DC-DC Bus Converter FUNCTIONAL SPECIFICATIONS, (CONT.) OUTPUT Total Output Power Voltage Nominal Output Voltage Output Voltage Setting Accuracy Overvoltage Protection Current Output Current Range Cold condition After warm up 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 Conditions Minimum Typical/Nominal Maximum Units 0 500.25 515.5 W No trim (@ all conditions) @ Vin=48V, Iout=0, temp=+25C At 50% load, no trim Via magnetic feedback 11.16 11.45 -2 13.8 11.5 14.4 11.85 11.55 2 15.6 Vdc Vdc % of Vnom Vdc 0 52 51 54 53 43.5 56 55 A Default, Configurable via PMBUS Default, Configurable via PMBUS Hiccup technique, autorecovery within 1.25% of Vout 0.4 1 A Output shorted to ground, no damage Continuous 100 100 120 0.02 10000 mV mV mV pk-pk % of Vout./C F A Current limiting Vin = 38 to 75V, Vout = nom., Iout = nom. Iout = min. to max., Vin = 48V 5 Hz- 20 MHz BW At all outputs Low ESR 30 50 80 0.01 MECHANICAL (Through Hole Models) Outline Dimensions (with heat sink) (Please refer to outline drawing) Outline Dimensions (with baseplate) 2.3 x 1.45 x 1.1 58.4 x 36.83 x 27.94 2.3 x 1.45 x 0.52 58.4 x 36.8 x 13.21 0.04 & 0.062 1.016 & 1.575 Copper alloy 98.4-299 4.7-19.6 LxWxH Through Hole Pin Diameter Through Hole Pin Material TH Pin Plating Metal and Thickness Nickel subplate Gold overplate Inches mm Inches mm -inches -inches ENVIRONMENTAL Operating Ambient Temperature Range Operating Case Temperature Storage Temperature Thermal Protection/Shutdown Electromagnetic Interference Conducted, EN55022/CISPR22 RoHS rating See Derating No derating Vin = Zero (no power) Measured in center External filter is required -40 -40 -55 85 110 125 132 B RoHS-6 C C C C Class Notes Unless otherwise noted, all specifications apply at Vin = nominal, nominal output voltage and full output load. General conditions are near sea level altitude, no base plate installed and natural convection airflow unless otherwise specified. All models are tested and specified with external parallel 1 F and 10 F output capacitors (see Technical Notes). 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 Cin = 33 F/100V, Cbus = 220F/100V and Lbus = 12 H. All models are stable and regulate to specification under no load. 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. The load step is 25% of full load current. Output Ripple and Noise is measured with Cout = 1 F || 10 F, 20 MHz oscilloscope bandwidth and full resistive load. www.murata-ps.com/support MDC_DRQ-12/42-D48.A04 Page 4 of 24 DRQ-12/42-D48 Series 500W Digital Fully Regulated Intermediate DC-DC Bus Converter PERFORMANCE DATA Efficiency vs. Line Voltage and Load Current @ +25C Maximum Current Temperature Derating at sea level (Vin = 40V, airflow from -Vin to +Vin, with heat sink) 100 50 95 40 Efficiency (%) 85 Output Current (Amps) VIN = 38V VIN = 48V VIN = 75V 90 80 2.0 m/s (400 LFM) 1.5 m/s (300 LFM) 1.0 m/s (200 LFM) 0.5 m/s (100 LFM) 30 20 10 75 0 70 0 10 20 30 40 30 50 35 40 45 50 60 65 70 75 80 85 80 85 Maximum Current Temperature Derating at sea level (Vin = 75V, airflow from -Vin to +Vin, with heat sink) 50 50 40 40 Output Current (Amps) Output Current (Amps) Maximum Current Temperature Derating at sea level (Vin = 48V, airflow from -Vin to +Vin, with heat sink) 2.0 m/s (400 LFM) 1.5 m/s (300 LFM) 1.0 m/s (200 LFM) 0.5 m/s (100 LFM) 30 55 Ambient Temperature (C) Load Current (Amps) 20 10 30 2.0 m/s (400 LFM) 1.5 m/s (300 LFM) 1.0 m/s (200 LFM) 0.5 m/s (100 LFM) 20 10 0 0 30 35 40 45 50 55 60 65 70 75 80 85 30 35 40 45 50 Ambient Temperature (C) 55 60 65 70 75 Ambient Temperature (C) Output vs. Input Voltage @ No Load 13 12 11 10 VIN OFF VIN ON Output Voltage 9 8 7 6 5 4 3 2 1 38.9 38.5 38.1 37.7 37.3 36.9 36.5 36.1 35.7 35.3 34.9 34.5 34.1 0 www.murata-ps.com/support MDC_DRQ-12/42-D48.A04 Page 5 of 24 DRQ-12/42-D48 Series 500W Digital Fully Regulated Intermediate DC-DC Bus Converter PERFORMANCE DATA Longitudinal Transverse Maximum Current Temperature Derating at sea level (Vin = 38V, airflow from Vin to Vout, with baseplate) Maximum Current Temperature Derating at sea level (Vin = 38V, airflow from -Vin to +Vin, with baseplate) 60 60 55 55 3.0 m/s (600 LFM) 2.5 m/s (500 LFM) 2.0 m/s (400 LFM) 1.5 m/s (300 LFM) 1.0 m/s (200 LFM) 0.5 m/s (100 LFM) Output Current (Amps) 45 40 35 50 45 Output Current (Amps) 50 30 25 20 40 35 30 20 15 15 10 10 5 5 0 3.0 m/s (600 LFM) 2.5 m/s (500 LFM) 2.0 m/s (400 LFM) 1.5 m/s (300 LFM) 1.0 m/s (200 LFM) 0.5 m/s (100 LFM) 25 0 40 45 50 55 60 65 70 75 80 85 40 45 50 55 Ambient Temperature (C) Maximum Current Temperature Derating at sea level (Vin = 48V, airflow from Vin to Vout, with baseplate) 70 75 80 85 80 85 80 85 60 55 55 3.0 m/s (600 LFM) 2.5 m/s (500 LFM) 2.0 m/s (400 LFM) 1.5 m/s (300 LFM) 1.0 m/s (200 LFM) 0.5 m/s (100 LFM) 45 40 35 50 45 Output Current (Amps) 50 Output Current (Amps) 65 Maximum Current Temperature Derating at sea level (Vin = 48V, airflow from -Vin to +Vin, with baseplate) 60 30 25 20 40 35 30 25 3.0 m/s (600 LFM) 2.5 m/s (500 LFM) 2.0 m/s (400 LFM) 1.5 m/s (300 LFM) 1.0 m/s (200 LFM) 0.5 m/s (100 LFM) 20 15 15 10 10 5 5 0 0 40 45 50 55 60 65 70 75 80 85 40 45 50 55 Ambient Temperature (C) 60 65 70 75 Ambient Temperature (C) Maximum Current Temperature Derating at sea level (Vin = 75V, airflow from Vin to Vout, with baseplate) Maximum Current Temperature Derating at sea level (Vin = 75V, airflow from -Vin to +Vin, with baseplate) 60 60 55 55 50 50 3.0 m/s (600 LFM) 2.5 m/s (500 LFM) 2.0 m/s (400 LFM) 1.5 m/s (300 LFM) 1.0 m/s (200 LFM) 0.5 m/s (100 LFM) 40 35 30 45 Output Current (Amps) 45 Output Current (Amps) 60 Ambient Temperature (C) 25 20 40 35 30 25 20 15 15 10 10 5 5 0 3.0 m/s (600 LFM) 2.5 m/s (500 LFM) 2.0 m/s (400 LFM) 1.5 m/s (300 LFM) 1.0 m/s (200 LFM) 0.5 m/s (100 LFM) 0 40 45 50 55 60 65 Ambient Temperature (C) 70 75 80 85 40 45 50 55 60 65 70 75 Ambient Temperature (C) www.murata-ps.com/support MDC_DRQ-12/42-D48.A04 Page 6 of 24 DRQ-12/42-D48 Series 500W Digital Fully Regulated Intermediate DC-DC Bus Converter PERFORMANCE DATA Enable Startup Delay (Vin = 48V, Iout = full load, Cout = 10000F, Ta = +25C) Ch2 = Vout, Ch4 = Enable. Startup Delay (Vin = 48V, Iout = full load, Cout = 10000F, Ta = +25C) Ch1 = Vin, Ch2 = Vout. Stepload Transient Response (Vin = 48V, Iout = 50-75-50% of Iout, Cload = 1000F) Stepload Transient Response (Vin = 48V, Iout = 25-75-25% of Iout, Cload = 1000F) Output Ripple & Noise (Vin = 48V, Iout = 0A, Cout = 1F || 10F, Ta = +25C) Output Ripple & Noise (Vin = 48V, Iout = full load, Cout = 1F || 10F, Ta = +25C) www.murata-ps.com/support MDC_DRQ-12/42-D48.A04 Page 7 of 24 DRQ-12/42-D48 Series 500W Digital Fully Regulated Intermediate DC-DC Bus Converter TECHNICAL NOTES Power Management Overview The module includes a wide range of readable and configurable power management features that are easy to implement with a minimum of external components. Furthermore, the module includes protection features that continuously protect the load from damage due to unexpected system faults. The SMBALERT pin alerts the host if there is a fault in the module. The following product parameters can continuously be monitored by a host: Vout, Iout, Vin, Temperature, and Power Good. The module is distributed with a default configuration suitable for a wide range operation in terms of Vin, Vout, and load. All power management functions can be reconfigured using the PMBus interface. The product provides a PMBus digital interface that enables the user to configure many aspects of the device operation as well as monitor the input and output parameters. Please contact our FAE for special configurations. Switching Frequency Adjust Using PMBus By default the switching frequency is set to 175-250 KHz variable frequency control. The product is optimized at this frequency but it can be changed to 175 KHz fixed frequency control. The thermal performance can be affected if the switching frequency is changed when Vin is above 50 Vdc. The following graph shows Frequency vs. Vin. 250kHZ 235kHZ 220kHZ 205kHZ 190kHZ 175kHZ Soft-start Power Up The default rise time of the ramp up is 20 ms. When starting by applying input voltage the control circuit boot-up time adds an additional 10 ms delay. The soft-start power up of the module can be reconfigured using the PMBus interface. Over Voltage Protection (OVP) The module includes over voltage limiting circuitry for protection of the load. The default OVP limit is 20% above the nominal output voltage. If the output voltage surpasses the OVP limit, the module can respond in different ways. The default response from an over voltage fault is to immediately shut down. The device will continuously check for the presence of the fault condition, and when the fault condition no longer exists the device will be re-enabled. The OVP fault level and fault response can be reconfigured using the PMBus interface. Over Current Protection (OCP, Current limit) The module includes current limiting circuitry for protection at continuous over load. The default setting for the product is hicup mode. The current limit could be configured by simply setting the IOUT_OC_FAULT_LIMIT to be greater than the IOUT_OC_WARN_LIMIT. The maximum value that the current limit could be set is 50A. Power Good The module provides Power Good (PG) flag in the Status Word register that indicates the output voltage is within a specified tolerance of its target level and no fault condition exists. The Power Good pin default logic is negative and it can be configured by MFR_PGOOD_POLARITY. 50V 52V 54V 56V 59V 61V 64V 66V 69V 71V Figure 1. Frequency graph PMBus Interface This module offers a PMBus digital interface that enables the user to configure many characteristics of the device operation as well as to monitor the input and output voltages, output current and device temperature. The module can be used with any standard two-wire I2C or SMBus host device. In addition, the module is compatible with PMBus version 1.2 and includes an SMBALERT line to help alleviate bandwidth limitations related to continuous fault monitoring. The module supports 100 kHz and 400 kHz bus clock frequency only. MAX. UNITS Logic high input PMBUS Logic Level MIN. 2 NOM. 3.3 V Logic low input 0 0.8 V Logic high output 2.4 3.6 V Logic low output -0.1 0.4 V Monitoring via PMBus A system controller (host device) can monitor a wide variety of parameters through the PMBus interface. The controller can monitor fault conditions by monitoring the SMBALERT pin, which will be asserted when any number of pre-configured fault or warning conditions occur. The system controller can also continuously monitor any number of power conversion parameters including but not limited to the following: * Input voltage * Output voltage * Output current * Module temperature Software Tools for Design and Production For these modules, Murata-PS provides software for configuring and monitoring via the PMBus interface. For more information please contact your local Murata-PS representative. See http://power.murata.com/datasheet?/data/apnotes/dcan-63.pdf for Application Note AN-63, Digital DC-DC Evaluation Board User Guide. See http://power.murata.com/datasheet?/data/apnotes/dcan-64.pdf for Application Note AN-64, Murata Power Brick GUI User Guide. www.murata-ps.com/support MDC_DRQ-12/42-D48.A04 Page 8 of 24 DRQ-12/42-D48 Series 500W Digital Fully Regulated Intermediate DC-DC Bus Converter ABC (PMBUS) MECHANICAL SPECIFICATIONS WITH HEAT SINK [36.8] 1.45 NOTES: UNLESS OTHERWISE SPECIFIED: 1: ALL DIMENSIONS ARE IN INCHES [MILLIMETERS]; 2: ALL TOLERANCES: x.xxin, 0.02in (x.xmm, 0.5mm) x.xxxin, 0.01in (x.xxmm, 0.25mm) 3: COMPONENTS WILL VARY BETWEEN MODELS 4: STANDARD PIN LENGTH: 0.180 Inch FOR PIN LENGTH OPTIONS, SEE PART NUMBER STRUCTURE. 1.10 [28.0]Max [58.4] 2.30 L SEE NOTE 4 PIN S 1-3,: I 0.040 0.0015 (1.016 0.038 ) Shoulde r: I 0.076 0.005 (1.930.13) PIN S 4,8: I 0.062 0.0015 (1.575 0.038 ) Shoul de r: I 0.098 0.005 (2.490.13) 0.010 minimum clearance between standoffs and highest component [10.80] 0.425 [50.80] 2.000 ISOMETRIC VIEW 5 2 6 7 8 9 10 11 12 13 14 15 1 16 PIN SIDE VIEW [10.80] 0.425 4 [15.24] 0.600 [15.24] 0.600 0.079 [2.0] Pin SQ 0.02 [0.50] 0.079 [2.0] INPUT/OUTPUT CONNECTIONS Designation Function 1 +VIN Positive Input 2 On/Off 1 Control Primary On/Off Control 3 No Pin No Pin 4 -VIN Negative Input 5 -VOUT Negative Output 6 +S Positive Remote Sense 7 -S Negative Remote Sense 8 SA0 Address Pin 0 9 SA1 Address Pin 1 10 SCL PMBus Clock 11 SDA PMBus Data 12 PG Power Good Output 13 DGND PMBus Ground 14 SMBALERT PMBus Alert Signal 15 On/Off 2 Control Secondary On/Off Control 16 +VOUT Positive Output 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 2 www.murata-ps.com/support MDC_DRQ-12/42-D48.A04 Page 9 of 24 DRQ-12/42-D48 Series 500W Digital Fully Regulated Intermediate DC-DC Bus Converter ABC (PMBUS) MECHANICAL SPECIFICATIONS WITH BASEPLATE [26.16] 1.030 NOTES: UNLESS OTHERWISE SPECIFIED: 1: M3 SCREW USED TO BOLT UNIT'S BASEPLATE TO OTHER SURFACES (SUCH AS HEATSINK) MUST NOT EXCEED 0.11''(2.8mm) DEPTH BELOW THE SURFACE OF BASEPLATE 2: APPLIED TORQUE PER SCREW SHOULD NOT EXCEED 5.3In-lb (0.6Nm); 3: ALL DIMENSIONS ARE IN INCHES [MILIMETERS]; 4: ALL TOLERANCES: x.xxin, 0.02in (x.xmm, 0.5mm) x.xxxin, 0.01in (x.xxmm, 0.25mm) 5: COMPONENTS WILL VARY BETWEEN MODELS 6: STANDARD PIN LENGTH: 0.180 Inch FOR PIN LENGTH OPTIONS, SEE PART NUMBER STRUCTURE. M3 THREAD TYP 3PL [5.59] 0.220 [47.24] 1.860 [13.2] 0.52 Max [36.8] 1.45 [5.33] 0.210 [58.4] 2.30 WITH BASEPLATE OPTION L SEE NOTE 6 PINS 1-3: I0.0400.0015(1.0160.038) Shoulder: I0.0760.005(1.930.13) PINS 4,8: I0.0620.0015(1.5750.038) Shoulder: I0.0980.005(2.490.13) 0.010 minimum clearance between standoffs and highest component [50.80] 2.000 4 5 2 6 8 10 12 14 7 9 11 13 15 16 1 [15.24] 0.600 [15.24] 0.600 0.079 [2.0] Pin [0.50] SQ 0.02 PIN SIDE VIEW 0.079 [2.0] ISOMETRIC VIEWCONNECTIONS INPUT/OUTPUT Designation Function 1 +VIN Positive Input 2 On/Off 1 Control Primary On/Off Control 3 No Pin No Pin 4 -VIN Negative Input 5 -VOUT Negative Output 6 +S Positive Remote Sense 7 -S Negative Remote Sense 8 SA0 Address Pin 0 9 SA1 Address Pin 1 10 SCL PMBus Clock 11 SDA PMBus Data 12 PG Power Good Output 13 DGND PMBus Ground 14 SMBALERT PMBus Alert Signal 15 On/Off 2 Control Secondary On/Off Control 16 +VOUT Positive Output 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 2 www.murata-ps.com/support MDC_DRQ-12/42-D48.A04 Page 10 of 24 DRQ-12/42-D48 Series 500W Digital Fully Regulated Intermediate DC-DC Bus Converter ABC (PMBUS) RECOMMENDED FOOTPRINT (2x) 0.120 3.05 MIN FOR PIN SHOULDERS 2.32 0.02 58.93 0.50 (3x) 0.100 2.54 MIN FOR PIN SHOULDERS 2.000 0.010 50.80 0.25 (2x) 0.082 0.005 2.08 0.13 CL (10x) 1 14 12 10 8 6 2 4 15 13 11 9 7 CL 5 (4x) (3x) 0.060 0.005 1.52 0.13 1.000 0.010 25.40 0.25 0.457 0.010 11.62 0.25 16 0.079 0.010 2 0.25 0.300 0.010 7.62 0.25 0.600 0.010 15.24 0.25 1.47 0.02 37.34 0.50 0.051 0.005 1.30 0.13 0.079 0.010 2 0.25 1.961 0.010 49.80 0.25 TOP VIEW www.murata-ps.com/support MDC_DRQ-12/42-D48.A04 Page 11 of 24 DRQ-12/42-D48 Series 500W Digital Fully Regulated Intermediate DC-DC Bus Converter [36.8] 1.45 MECHANICAL SPECIFICATIONS (NO PMBUS) WITH HEAT SINK [58.4] 2.30 L [28] 1.10 Max SEE NOTE 4 NOTES: UNLESS OTHERWISE SPECIFIED: 1: ALL DIMENSIONS ARE IN INCHES [MILLIMETERS]; 2: ALL TOLERANCES: x.xxin, 0.02in (x.xmm, 0.5mm) x.xxxin, 0.01in (x.xxmm, 0.25mm) 3: COMPONENTS WILL VARY BETWEEN MODELS 4: STANDARD PIN LENGTH: 0.180 Inch FOR PIN LENGTH OPTIONS, SEE PART NUMBER STRUCTURE. 5: DOSA 5 PIN COMPATIBLE PIN S 1-3,: I 0.040 0.0015 (1.016 0.038 ) Shoulde r: I 0.076 0.005 (1.93 0.13 ) PIN S 4,8: I 0.062 0.0015 (1.575 0.038 ) Shoul de r: I 0.098 0.005 (2.49 0.13 ) 0.010 minimum clearance between standoffs and highest component 4 2 [10.80] 0.425 3 [15.24] 0.600 [15.24] 0.600 [10.80] 0.425 [50.80] 2.000 1 8 PIN SIDE VIEW ISOMETRIC VIEW 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 2 I/O Connections Pin 1 2 3 4 8 Function +Vin Remote On/Off Control -Vin -Vout +Vout www.murata-ps.com/support MDC_DRQ-12/42-D48.A04 Page 12 of 24 DRQ-12/42-D48 Series 500W Digital Fully Regulated Intermediate DC-DC Bus Converter MECHANICAL SPECIFICATIONS (NO PMBUS) WITH BASEPLATE [36.8] 1.45 [26.16] 1.030 [5.33] 0.210 [58.4] 2.30 NOTES: UNLESS OTHERWISE SPECIFIED: 1: M3 SCREW USED TO BOLT UNIT'S BASEPLATE TO OTHER SURFACES (SUCH AS HEATSINK) MUST NOT EXCEED 0.11''(2.8mm) DEPTH BELOW THE SURFACE OF BASEPLATE 2: APPLIED TORQUE PER SCREW SHOULD NOT EXCEED 5.3In-lb (0.6Nm); 3: ALL DIMENSIONS ARE IN INCHES [MILIMETERS]; 4: ALL TOLERANCES: x.xxin, 0.02in (x.xmm, 0.5mm) x.xxxin, 0.01in (x.xxmm, 0.25mm) 5: COMPONENTS WILL VARY BETWEEN MODELS 6: STANDARD PIN LENGTH: 0.180 Inch FOR PIN LENGTH OPTIONS, SEE PART NUMBER STRUCTURE. M3 THREAD TYP 3PL [47.24] 1.860 7: DOSA 5 PIN COMPATIBLE [13.2] 0.52 Max [5.59] 0.220 WITH BASEPLATE OPTION L SEE NOTE 6 PINS 1-3: I0.0400.0015(1.0160.038) Shoulder: I0.0760.005(1.930.13) PINS 4,8: I0.0620.0015(1.5750.038) Shoulder: I0.0980.005(2.490.13) 0.010 minimum clearance between standoffs and highest component [50.80] 2.000 4 [15.24] 0.600 [15.24] 0.600 3 2 1 8 PIN SIDE VIEW ISOMETRIC VIEW 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 2 I/O Connections Pin 1 2 3 4 8 Function +Vin Remote On/Off Control -Vin -Vout +Vout www.murata-ps.com/support MDC_DRQ-12/42-D48.A04 Page 13 of 24 DRQ-12/42-D48 Series 500W Digital Fully Regulated Intermediate DC-DC Bus Converter RECOMMENDED FOOTPRINT (NO PMBUS) (3x) 0.100 2.54 MIN FOR PIN SHOULDERS 2.32 0.02 58.93 0.50 (2x) 2.000 0.010 50.80 0.25 0.082 0.005 2.08 0.13 0.300 0.010 7.62 0.25 0.600 0.010 15.24 0.25 1.47 0.02 37.34 0.50 CL 1 8 2 CL 3 4 (2x) (3x) 0.060 0.005 1.52 0.13 0.120 3.05 MIN FOR PIN SHOULDERS 1.000 0.010 25.40 0.25 TOP VIEW www.murata-ps.com/support MDC_DRQ-12/42-D48.A04 Page 14 of 24 DRQ-12/42-D48 Series 500W Digital Fully Regulated Intermediate DC-DC Bus Converter STANDARD PACKAGING BASEPLATE VERSION 9.92 (251.97) REF HEATSINK VERSION 9.92 (251.97) REF Each static dissipative polyethylene foam tray accommodates 12 converters in a 3 x 4 array. 0.88 (22.35) REF Each static dissipative polyethylene foam tray accommodates 15 converters in a 3 x 5 array. 4.25 (108) .25 closed height 2.75 (69.85) .25 closed height 11.00 (279.4) .25 10.50 (266.7) .25 10.0 (254) .25 Carton accommodates two (2) trays yielding 30 converters per carton 10.0 (254) .25 Carton accommodates two (2) trays yielding 24 converters per carton 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 2 www.murata-ps.com/support MDC_DRQ-12/42-D48.A04 Page 15 of 24 DRQ-12/42-D48 Series 500W Digital Fully Regulated Intermediate DC-DC Bus Converter PMBus Addressing Figure 2 and the accompanying table display the recommended resistor values for hard-wiring PMBus addresses (1% tolerance resistors recommended): The address is set in the form of two octal (0 to 7) digits, with each pin setting one digit. The resistor values for each digit is shown below. The SA0 and SA1 pins can be configured with a resistor to GND according to the following equation. PMBus Address = 8 x (SA0value) + (SA1 value) If the calculated PMBus address is 0d, 11d or 12d, PMBus address 119d is assigned instead. From a system point of view, the user shall also be aware of further limitations of the addresses as stated in the PMBus Specification. It is not recommended to keep the SA0 and SA1 pins left open. SA0 SA1 R1 R0 Figure 2. Schematic of Connection of Address Resistors PMBus Commands The products are designed to be PMBus compliant. The following tables list the implemented PMBus read commands. For more detailed information see "PMBus Power System Management Protocol Specification, Part I - General Requirements, Transport and Electrical Interface" and "PMBus Power System Management Protocol, Part II - Command Language." Digit (SA0, SA1 index) Resistor Value [k] 0 1 2 3 4 5 6 7 10 22 33 47 68 100 150 220 OVERALL SMBus SMBus Number Lower Upper Transaction Type: Transaction Type: Of Data Default Value Limit Limit Writing Data Reading Data Bytes CMD Command Name1 01h 02h 03h 10h 11h 12h 15h 16h 19h 20h 21h 22h 25h 26h 40h 41h OPERATION2 ON_OFF_CONFIG3 CLEAR_FAULTS WRITE_PROTECT STORE_DEFAULT_ALL4 RESTORE_DEFAULT_ALL4 STORE_USER_ALL4 RESTORE_USER_ALL4 CAPABILITY VOUT_MODE VOUT_COMMAND VOUT_TRIM VOUT_MARGIN_HIGH VOUT_MARGIN_LOW VOUT_OV_FAULT_LIMIT VOUT_OV_FAULT_RESPONSE5 Write Byte Write Byte Send byte Write Byte Send byte Send byte Send byte Send byte N/A N/A Write Word Write Word Write Word Write Word Write Word Write Byte Read Byte Read Byte N/A Read Byte N/A N/A N/A N/A Read Byte Read Byte Read Word Read Word Read Word Read Word Read Word Read Byte 1 1 0 1 0 0 0 0 1 1 2 2 2 2 2 1 0x80 0x1D N/A 0x00 N/A N/A N/A N/A 0xB0 0x17 11.500 0 13.199 8.100 14.199 0xB8 42h VOUT_OV_WARN_LIMIT Write Word Read Word 2 13.500 8.100 15.600 46h 47h 4Ah 4Fh 50h 51h IOUT_OC_FAULT_LIMIT IOUT_OC_FAULT_RESPONSE6 IOUT_OC_WARN_LIMIT OT_FAULT_LIMIT OT_FAULT_RESPONSE5 OT_WARN_LIMIT Write Word Write Byte Write Word Write Word Write Byte Write Word Read Word Read Byte Read Word Read Word Read Byte Read Word 2 1 2 2 1 2 54.00 0xF8 52.00 132 0xB8 115 0.00 0.00 30 58h VIN_UV_WARN_LIMIT Write Word Read Word 2 37.00 59h 5Ah 5Eh 5Fh 60h 61h VIN_UV_FAULT_LIMIT VIN_UV_FAULT_RESPONSE7 POWER_GOOD_ON POWER_GOOD_OFF TON_DELAY TON_RISE13 Write Word Write Byte Write Word Write Word Write Word Write Word Read Word Read Byte Read Word Read Word Read Word Read Word 2 1 2 2 2 2 35.50 0xF8 10.799 9.600 1 0 32.00 75.00 Cross Check Unit 8.1<=Vout<=13.212 >VOUT_MARGIN_LOW <VOUT_MARGIN_HIGH >VOUT_OV_WARN_LIMIT V V V V V 60.00 <VOUT_OV_FAULT_LIMIT >VOUT_COMMAND >IOUT_OC_WARN_LIMIT A 60.00 145 <IOUT_OC_FAULT_LIMIT >OT_WARN_LIMIT A C 30 145 75.00 <OT_FAULT_LIMIT <VIN_OV_WARN_LIMIT >VIN_UV_FAULT_LIMIT <VIN_UV_WARN_LIMIT C 32.00 >POWER_GOOD_OFF <POWER_GOOD_ON V V ms ms 8.100 13.200 8.100 13.199 8.100 13.200 8.100 15.600 1.000 13.199 1.000 13.199 1 500 10 100 V V V www.murata-ps.com/support MDC_DRQ-12/42-D48.A04 Page 16 of 24 DRQ-12/42-D48 Series 500W Digital Fully Regulated Intermediate DC-DC Bus Converter OVERALL (CONT.) Command Name1 CMD 64h 65h 78h 79h 7Ah 7Bh 7Ch 7Dh 7Eh 88h 8Bh 8Ch 8Dh 8Eh 94h 95h 96h 98h TOFF_DELAY TOFF_FALL13 STATUS_BYTE STATUS_WORD STATUS_VOUT STATUS_IOUT STATUS_INPUT STATUS_TEMPERATURE STATUS_CML READ_VIN READ_VOUT READ_IOUT READ_TEMPERATURE_18 READ_TEMPERATURE_29 READ_DUTY_CYCLE READ_FREQUENCY READ_POUT PMBUS_REVISION 99h MFR_ID 9Ah 9Bh 9Dh 9Eh A0h A1h A2h A3h A4h A5h A6h A7h A8h A9h B0h B1h C0h D0h DDh DEh E9h EAh F6h F9h FAh FBh FCh MFR_MODEL10 MFR_REVISION10 MFR_DATE10 MFR_SERIAL10 MFR_VIN_MIN MFR_VIN_MAX MFR_IIN_MAX MFR_PIN_MAX MFR_VOUT_MIN MFR_VOUT_MAX MFR_IOUT_MAX MFR_POUT_MAX MFR_TAMBIENT_MAX MFR_TAMBIENT_MIN USER_DATA_00 USER_DATA_01 MFR_MAX_TEMP_1 MFR_VARIABLE_FREQUENCY_DISABLE MFR_PRIMARY_ON_OFF_CONFIG MFR_PGOOD_POLARITY MFR_VIN_UV_FAULT_HYS MFR_OT_FAULT_HYS MFR_CALIBRATION_STATUS MFR_VIN_SENSE_CALIBRATION MFR_IOUT_SENSE_CALIBRATION MFR_VOUT_SET_POINT_CALIBRATION MFR_SUPERVISOR_PASSWORD SMBus SMBus Number Lower Upper Transaction Type: Transaction Type: Of Data Default Value Limit Limit Writing Data Reading Data Bytes Write Word Write Word Write Byte Write Word Write Byte Write Byte Write Byte Write Byte Write Byte N/A N/A N/A N/A N/A N/A N/A N/A N/A Read Word Read Word Read Byte Read Word Read Byte Read Byte Read Byte Read Byte Read Byte Read Word Read Word Read Word Read Word Read Word* Read Word Read Word Read Word Read Byte 2 2 1 2 1 1 1 1 1 2 2 2 2 2 2 2 2 1 N/A Block Read 22 Block Write* Block Write* Block Write* Block Write* N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A Block Write Block Write N/A Write Byte Write Byte Write Byte Write Word Write Word N/A Write byte* Write Word* Write Word* Block Write Block Read Block Read Block Read Block Read Read Word Read Word Read Word Read Word Read Word Read Word Read Word Read Word Read Word Read Word Block Read Block Read Read Word Read Byte Read Byte Read Byte Read Word Read Word Read Byte* N/A N/A N/A N/A <=20 <=10 <=10 <=10 2 2 2 2 2 2 2 2 2 2 <=20 <=20 2 1 1 1 2 2 1 1 2 2 N/A 0 0 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A 0x42 "Murata Power Solutions" N/A N/A N/A N/A 38.00 75.00 15.5 438 8.100 13.199 42.00 500 85 -40 "---" "---" 132 0x00 0x04/0x0611 0x00 2.00 20 0xC7 N/A N/A N/A N/A 0 10 500 100 Cross Check Unit ms ms V V A C C % kHZ W V V A W V V A W C C C 1.00 5 20.00 50 V C www.murata-ps.com/support MDC_DRQ-12/42-D48.A04 Page 17 of 24 DRQ-12/42-D48 Series 500W Digital Fully Regulated Intermediate DC-DC Bus Converter OVERALL (CONT.) Notes: * Only available in supervisor mode (default state is user mode, send password to comand 0xFC to change to supervisor mode) 1. a) Unit restores the entire contents of the non-volatile User Store memory when power up b) PEC is supported c) Max bus speed: 400kHZ d) SMBALERT# is supported e) Linear data format used f) addressing: If the calculated PMBus address is 0d, 11d or 12d, SA0 or SA1 lefts open, default PMBus address 120d is assigned instead. 2. Not supported items: 100101XXb Margin Low(Ignore Fault), 101001XXb On Margin High(Ignore Fault) 3. Restart delay of turned off by OPEATION or CONTROL or primary on/off is 200ms 4. Unit will shutdown 1 second for protection, then recover automaticly 5. Restart delay unit: 500ms, lower limit: 500ms. Turn off delay unit: 0ms, lower limit: 0ms if bits 7:6=11b, restart delay is 500ms 6. Restart delay unit and Turn off delay unit are same as note 5 Bits 7:6: 00b,01b,10b are not supported 7. Restart delay unit: 100ms, lower limit: 100ms. Turn off delay unit:0ms, lower limit: 0ms if bits 7:6=11b, restart delay is 100ms 8. Temperature of baseplate side 9. Temperature of pin side 10. Unit's actual inforamtion 11. Default value of negative logic: 0x04 Default value of positive logic: 0x06 12. Unit can receive any value for VOUT_TRIM command, but Vout is limited to 8.1~13.2V, if calculated Vout exceeds limit, then equal to limit. 13. Value of 0 is acceptable, which is the same as lower limit to unit. MURATA-PS defined commands (01-CFh Refer to PMBus 1.2 SPEC) D0h: MFR_VARIABLE_FREQUENCY_DISABLE Bits Purpose Value 7:1 0 Variable frequency control DDh: MFR_PRIMARY_ON_OFF_CONFIG Bits Purpose Value 7:3 Controls how the 2 unit responds to the CONTROL pin Polarity of primary 1 ON/OFF logic 0 Meaning 0000000 Reserved 0 Turn on variable frequency control 1 Turn off variable frequency control Meaning 00000 Reserved 0 Unit ignores the primary ON/OFF pin Unit requires the primary ON/OFF pin to be 1 asserted to start the unit 0 Active low (Pull pin low to start the unit) 1 Active high (Pull high or open to start the unit) 0 Reserved DEh: MFR_ PGOOD_POLARITY Bits Purpose Value Meaning 7:1 0000000 Reserved Negative logic, output low if Vout rises to 0 Power good polarity specific value 0 Positive logic, output high if Vout rises to of pin 12 1 specific value E9h: MFR_VIN_UV_FAULT_HYS Hysteresis of VIN_UV_FAULT recover, Linear data format EAh: MFR_OT_FAULT_HYS Hysteresis of OT_FAULT recover, Linear data format F6h: MFR_CALIBRATION_STATUS Refer to calibration procedure file F9h: MFR_VIN_SENSE_CALIBRATION Refer to calibration procedure file FAh: MFR_IOUT_SENSE_CALIBRATION Refer to calibration procedure file FBh: MFR_VOUT_SET_POINT_CALIBRATION Refer to calibration procedure file FCh: MFR_SUPERVISOR_PASSWORD Set unit to supervisor mode or ROM mode, Refer to password table www.murata-ps.com/support MDC_DRQ-12/42-D48.A04 Page 18 of 24 DRQ-12/42-D48 Series 500W Digital Fully Regulated Intermediate DC-DC Bus Converter STATUS WORD AND BYTE (GREEN = SUPPORTED) STATUS_VOUT 7 VOUT_OV_FAULT 6 VOUT_OV_WARNING 5 VOUT_UV_WARNING 4 VOUT_UV_FAULT 3 VOUT_MAX Warning 2 TON_MAX_FAULT 1 TOFF_MAX_WARNING 0 VOUT Tracking Error STATUS_IOUT 7 IOUT_OC_FAULT 6 IOUT_OC_LV_FAULT 5 IOUT_OC_WARNING 4 IOUT_UC_FAULT 2 In Power Limiting Mode 1 POUT_OP_FAULT 0 POUT_OP_WARNING 7 VOUT 6 IOUT/POUT 5 INPUT 4 MFR_SPECIFIC 3 POWER_GOOD# 2 FANS 1 OTHER 0 UNKNOWN 7 BUSY 6 OFF 5 VOUT_OV_FAULT 4 IOUT_OC_FAULT 3 VIN_UV_FAULT 2 TEMPERATURE 1 CML 0 NONE OF THE ABOVE 7 VIN_OV_FAULT 6 VIN_OV_WARNING 5 VIN_UV_WARNING 4 VIN_UV_FAULT 2 IIN_OC_FAULT 1 IIN_OC_WARNING 0 PIN_OP_WARNING STATUS_MFR_SPECIFIC Manufacturer Defined Manufacturer Defined Manufacturer Defined Manufacturer Defined Manufacturer Defined Manufacturer Defined Manufacturer Defined Manufacturer Defined STATUS_FANS_1_2 STATUS_TEMPERATURE 7 OT_FAULT 6 OT_WARNING 5 UT_WARNING 4 UT_FAULT 3 Reserved 2 Reserved 1 Reserved 0 Reserved STATUS_OTHER 7 Reserved 6 Reserved 5 Input A Fuse/Breaker Fault 4 Input B Fuse/Breaker Fault 3 Input A OR-ing Device Fault 2 Input B OR-ing Device Fault 1 Output OR-ing Device Fault 0 Reserved 7 Fan 1 Fault 6 Fan 2 Fault 5 Fan 1 Warning 4 Fan 2 Warning 3 Fan 1 Speed Override 2 Fan 2 Speed Override 1 Air Flow Fault 0 Air Flow Warning STATUS_FANS_3_4 STATUS_CML 7 Fan 3 Fault 6 Fan 4 Fault 5 Fan 3 Warning 4 Fan 4 Warning 3 Fan 3 Speed Override 2 Fan 4 Speed Override 1 Reserved 0 Reserved 7 Invalid/Unsupported Command 6 Invalid/Unsupported Data 5 Packet Error Check Failed 4 Memory Fault Detected 3 Processor Fault Detected 2 Reserved 1 Other Communication Fault 0 Other Memory Or Logic Fault STATUS_WORD STATUS_INPUT www.murata-ps.com/support MDC_DRQ-12/42-D48.A04 Page 19 of 24 DRQ-12/42-D48 Series 500W Digital Fully Regulated Intermediate DC-DC Bus Converter TECHNICAL NOTES (CONT.) Thermal Shutdown Extended operation at excessive temperature will initiate overtemperature shutdown triggered by a temperature sensor outside the PWM controller. This operates similarly to overcurrent and short circuit mode. The inception point of the overtemperature condition depends on the average power delivered, the ambient temperature and the extent of forced cooling airflow. Thermal shutdown uses only the hiccup mode (autorestart) and PMBus configurable hysteresis. Start Up Considerations When power is first applied to the DC-DC converter, there is some risk of start up difficulties if you do not have both low AC and DC impedance and adequate regulation of the input source. Make sure that your source supply does not allow the instantaneous input voltage to go below the minimum voltage at all times. Use a moderate size capacitor very close to the input terminals. You may need two or more parallel capacitors. A larger electrolytic or ceramic cap supplies the surge current and a smaller parallel low-ESR ceramic cap gives low AC impedance. Remember that the input current is carried both by the wiring and the ground plane return. Make sure the ground plane uses adequate thickness copper. Run additional bus wire if necessary. 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. Input Under-Voltage Shutdown and Start-Up Threshold Converters will not begin to regulate properly until the rising 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. The over/ under-voltage fault level and fault response and hysterisis can be configured via the PMBus interface. Start-Up Time Start-Up Time (see Specifications) is the time interval between the point when the rising input voltage crosses the Start-Up Threshold and the output voltage enters and remains within its specified accuracy band. These converters include a soft start circuit to control Vout ramp time, thereby limiting the input inrush current. The On/Off Remote Control interval from On command to Vout (final 5%) 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. Recommended Input Filtering The user must assure that the input source has low AC impedance to provide dynamic stability and that the input supply has little or no inductive content, including long distributed wiring to a remote power supply. The converter will operate with no additional external capacitance if these conditions are met. For best performance, we recommend installing a low-ESR capacitor immediately adjacent to the converter's input terminals. The capacitor should be a ceramic type such as the Murata GRM32 series or a polymer type. More input bulk capacitance may be added in parallel (either electrolytic or tantalum) if needed. Recommended Output Filtering The converter will achieve its rated output ripple and noise with no additional external capacitor. However, the user may install more external output capacitance to reduce the ripple even further or for improved dynamic response. Again, use low-ESR ceramic (Murata GRM32 series) or polymer capacitors. Mount these close to the converter. Measure the output ripple under your load conditions. Use only as much capacitance as required to achieve your ripple and noise objectives. Excessive capacitance can make step load recovery sluggish or possibly introduce instability. Do not exceed the maximum rated output capacitance listed in the specifications. 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. The Cbus and Lbus components simulate a typical DC voltage bus. TO OSCILLOSCOPE CURRENT PROBE +Vin VIN LBUS + - + - CBUS CIN -Vin CIN = 220F, ESR < 700m @ 100kHz CBUS = 220F, ESR < 100m @ 100kHz LBUS = 12H Figure 3. Measuring Input Ripple Current +Vout C1 C2 SCOPE RLOAD -Vout C1 = 1F; C2 = 10F LOAD 2-3 INCHES (51-76mm) FROM MODULE Figure 4. Measuring Output Ripple and Noise (PARD) www.murata-ps.com/support MDC_DRQ-12/42-D48.A04 Page 20 of 24 DRQ-12/42-D48 Series 500W Digital Fully Regulated Intermediate DC-DC Bus Converter Minimum Output Loading Requirements All models regulate within specification and are stable under no load to full load conditions. Thermal Shutdown (OTP, UTP) To prevent many over temperature problems and damage, these converters include thermal shutdown circuitry. If environmental conditions cause the temperature of the DC-DCs 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 set in the command recover temp is (OT_FAULT_LIMIT-MFR_OT_ FAULT_HYS), the hysteresis is defined in general electrical specification section. The OTP and hysteresis of the module can be reconfigured using the PMBus. The OTP and UTP fault limit and fault response can be configured via the PMBus. 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 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). Murata Power Solutions 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. CAUTION: If you exceed these Derating guidelines, the converter may have an unplanned Over Temperature shut down. Also, these graphs are all collected near Sea Level altitude. Be sure to reduce the derating for higher altitude. Output Short Circuit Condition The short circuit condition is an extension of the "Current Limiting" condition. When the monitored peak current signal reaches a certain range, the PWM controller's outputs are shut off thereby turning the converter "off." This is followed by an extended time out period. This period can vary depending on other conditions such as the input voltage level. Following this time out period, the PWM controller will attempt to re-start the converter by initiating a "normal start cycle" which includes softstart. If the "fault condition" persists, another "hiccup" cycle is initiated. This "cycle" can and will continue indefinitely until such time as the "fault condition" is removed, at which time the converter will resume "normal operation." Operating in the "hiccup" mode during a fault condition is advantageous in that average input and output power levels are held low preventing excessive internal increases in temperature. Remote On/Off Control The DRQ series modules are equipped with both primary (On/Off 1, enabled, pull up internal) and secondary (On/Off 2, disabled, pull up internal) control pins for increased system flexibility. Both are configurable via PMBus. The On/Off pins are TTL open-collector and/or CMOS open-drain compatible. (See general specifications for threshold voltage levels. See also MFR_PRIMARY_ON_OFF_ CONFIG section.) Negative-logic models 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 +13.5Vdc with respect to -Vin. The On/Off function allows the module to be turned on/off by an external device switch. Positive-logic models are enabled when the On/Off pin is left open or is pulled high to +13.5V with respect to -Vin. Positive-logic devices are disabled when the On/Off is grounded or brought to within a low voltage (see specifications) with respect to -Vin. For voltage levels for On/Off 2 signal see functional specifications. The restart delay for this module to turn On/Off by the On/Off control pin is 100ms. On/Off 1 can be configured by PMBus command MFR_PRIMARY_ON_OFF_ CONFIG (DDh); default configuration is not ignored; required On/Off 1 control pin to be asserted to start the unit. On/Off 2 can be configured by PMBUS command ON_OFF_CONFIG (02h); default configuration is ignored; treat it as always ON. DRQ's On/Off status is dependent on On/Off 1 control, On/Off 2 control, and OPERATION (PMBus command) status; all three must be ON to turn DRQ on; if one of them is OFF, unit will be turned off. On/Off 1 or 2 Control status Not ignored On/Off 1 or 2 pin OPEN PULL HIGH PULL LOW P LOGIC ON ON OFF Ignored N LOGIC OFF OFF ON P LOGIC ON ON ON N LOGIC ON ON ON Output Capacitive Load These converters do not require external capacitance added to achieve rated specifications. Users should only consider adding capacitance to reduce switching noise and/or to handle spike current load steps. Install only enough capacitance to achieve noise objectives. Excess external capacitance may cause degraded transient response and possible oscillation or instability. Remote Sense Input Use the Sense inputs with caution. Sense is normally connected at the load. Sense inputs compensate for output voltage inaccuracy delivered at the load. This is done by correcting IR voltage drops along the output wiring and the current carrying capacity of PC board etch. This output drop (the difference between Sense and Vout when measured at the converter) should not exceed 0.5V. Consider using heavier wire if this drop is excessive. Sense inputs also improve the stability of the converter and load system by optimizing the control loop phase margin. Note: The Sense input and power Vout lines are internally connected through low value resistors to their respective polarities so that the converter can operate without external connection to the Sense. Nevertheless, if the Sense function is not used for remote regulation, the user should connect +Sense to +Vout and -Sense to -Vout at the converter pins. www.murata-ps.com/support MDC_DRQ-12/42-D48.A04 Page 21 of 24 DRQ-12/42-D48 Series 500W Digital Fully Regulated Intermediate DC-DC Bus Converter The remote Sense lines carry very little current. They are also capacitively coupled to the output lines and therefore are in the feedback control loop to regulate and stabilize the output. As such, they are not low impedance inputs and must be treated with care in PC board layouts. Sense lines on the PCB should run adjacent to DC signals, preferably Ground. In cables and discrete wiring, use twisted pair, shielded tubing or similar techniques. Any long, distributed wiring and/or significant inductance introduced into the Sense control loop can adversely affect overall system stability. If in doubt, test your applications by observing the converter's output transient response during step loads. There should not be any appreciable ringing or oscillation. You may also adjust the output trim slightly to compensate for voltage loss in any external filter elements. Do not exceed maximum power ratings. Please observe Sense inputs tolerance to avoid improper operation: [Vout(+) -Vout(-)] - [Sense(+) -Sense(-)] 10% of Vout Output overvoltage protection is monitored at the output voltage pin, not the Sense pin. Therefore excessive voltage differences between Vout and Sense together with trim adjustment of the output can cause the overvoltage protection circuit to activate and shut down the output. Power derating of the converter is based on the combination of maximum output current and the highest output voltage. Therefore the designer must ensure: (Vout at pins) x (Iout) (Max. rated output power) Contact and PCB resistance losses due to IR drops +VOUT -VIN I OUT +SENSE Sense Current ON/OFF CONTROL LOAD Sense Return -SENSE I OUT Return +VIN -VOUT Contact and PCB resistance losses due to IR drops Figure 5. Remote Sense Circuit Configuration Soldering Guidelines Murata Power Solutions recommends the specifications below when installing these converters. These specifications vary depending on the solder type. Exceeding these specifications may cause damage to the product. Be cautious when there is high atmospheric humidity. We strongly recommend a mild pre-bake (100 C. for 30 minutes). 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 www.murata-ps.com/support MDC_DRQ-12/42-D48.A04 Page 22 of 24 DRQ-12/42-D48 Series 500W Digital Fully Regulated Intermediate DC-DC Bus Converter Emissions Performance Murata Power Solutions measures its products for conducted 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. 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. [3] Conducted Emissions Test Results VCC RTN L1 C1 C2 C3 L2 + C4 C5 C6 C7 + DC/DC C12 LOAD -48V C8 C9 C10 GND C11 GND Figure 6. Conducted Emissions Test Circuit Graph 1. Conducted emissions performance, Positive Line, CISPR 22, Class B, full load [1] Conducted Emissions Parts List Reference C1, C2, C3, C4, C5 C6 L1, L2 C8, C9, C10, C11 C7 C12 Part Number Description Vendor SMD CERAMIC-100VGRM32ER72A105KA01L Murata 1000nF-X7R-1210 SMD CERAMIC100V-100nFGRM319R72A104KA01D Murata 10%-X7R-1206 COMMON MODE-473uHPG0060T Pulse 25%-14A SMD CERAMIC630V-0.22uFGRM55DR72J224KW01L Murata 10%-X7R-2220 Aluminum100V-220UfUHE2A221MHD Nichicon 10%-long lead NA [2] Conducted Emissions Test Equipment Used Hewlett Packard HP8594L Spectrum Analyzer - S/N 3827A00153 2Line V-networks LS1-15V 50/50Uh Line Impedance Stabilization Network Graph 2. Conducted emissions performance, Negative Line, CISPR 22, Class B, full load [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 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. www.murata-ps.com/support MDC_DRQ-12/42-D48.A04 Page 23 of 24 DRQ-12/42-D48 Series 500W Digital Fully Regulated Intermediate DC-DC Bus Converter IR Transparent optical window Unit under test (UUT) IR Video Camera Precision low-rate anemometer 3" below UUT Ambient temperature sensor Airflow collimator Vertical Wind Tunnel 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, Variable temperature gauges, and adjustable heating element. speed fan 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. Both through-hole and surface mount converters are soldered down to a 10" x 10" host carrier board for realistic heat absorption and spreading. Both longitudinal and transverse airflow studies are possible by rotation of this carrier Heating board since there are often significant differences in the heat element 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. Figure 7. Vertical Wind Tunnel Murata Power Solutions, Inc. 129 Flanders Road, Westborough, MA 01581 U.S.A. ISO 9001 and 14001 REGISTERED 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. Specifi cations are subject to change without notice. (c) 2018 Murata Power Solutions, Inc. www.murata-ps.com/support MDC_DRQ-12/42-D48.A04 Page 24 of 24