GE Data Sheet JRCW016A0R Orca* Series; DC-DC Converter Power Modules 36–75 Vdc Input; 28Vdc Output; 16Adc Output RoHS Compliant Applications Features Compliant to RoHS II EU Directive 2011/65/EC (-Z versions) Compliant to REACH Directive (EC) No 1907/2006 High power density: 166 W/in3 Very high efficiency: >93.5% Typ at Full Load Industry standard half-brick pin-out Low output ripple and noise Industry standard, DOSA compliant half-brick footprint 57.7mm x 60.7mm x 12.7mm (2.27” x 2.39” x 0.5”) Remote Sense 2:1 input voltage range Single tightly regulated output Constant switching frequency Constant Current Overcurrent limit Latch after short circuit fault shutdown RF Power Amplifier Over temperature protection auto restart Wireless Networks Output voltage adjustment trim, 16.0Vdc to 35.2Vdc Switching Networks Wide operating case temperature range (-40°C to 100°C) CE mark meets 2006/95/EC directives§ ANSI/UL# 60950-1, 2nd Ed. Recognized, CSA† C22.2 No. 609501-07 Certified, and VDE‡ 0805-1 (EN60950-1, 2nd Ed.) Licensed ISO** 9001 and ISO 14001 certified manufacturing facilities Compliant to IPC-9592A, Category 2, Class II Options Output OCP/OVP auto restart Shorter pins Unthreaded heatsink holes Tunable Loop* for transient response optimization Description The JRCW016A0R Orca series of dc-dc converters are a new generation of isolated, very high efficiency DC/DC power modules providing up to up to 16Adc output current at a nominal output voltage of 28Vdc in an industry standard, DOSA compliant halfbrick size footprint, which makes it an ideal choice for high voltage and high power applications. Threaded-through holes are provided to allow easy mounting or addition of a heatsink for high-temperature applications. The output is fully isolated from the input, allowing versatile polarity configurations and grounding connections. This module contains an optional new feature, the Tunable Loop, that allows the user to optimize the dynamic response of the converter to match the load with reduced amount of output capacitance, leading to savings on cost and PWB area. * Trademark of General Electric Company UL is a registered trademark of Underwriters Laboratories, Inc. CSA is a registered trademark of Canadian Standards Association. ‡ VDE is a trademark of Verband Deutscher Elektrotechniker e.V. ** ISO is a registered trademark of the International Organization of Standards # † November 20, 2013 ©2012 General Electric Company. All rights reserved. Page 1 GE Data Sheet JRCW016A0R Orca Series; DC-DC Converter Power Modules 36–75 Vdc Input; 28.0Vdc Output; 16Adc Output Absolute Maximum Ratings Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are absolute stress ratings only, functional operation of the device is not implied at these or any other conditions in excess of those given in the operations sections of the data sheet. Exposure to absolute maximum ratings for extended periods can adversely affect the device reliability. Parameter Device Symbol Min Max Unit Input Voltage Continuous All VIN -0.3 80 Vdc Transient, operational (≤100 ms) All VIN,trans -0.3 100 Vdc Operating Ambient Temperature All Ta -40 85 °C Operating Case Temperature (See Thermal Considerations section, Figure 17) All Tc -40 100 °C Storage Temperature All Tstg -55 125 °C Input to Case, Input to Output All 1500 Vdc Output to Case All 500 Vdc I/O Isolation Voltage (Current trip point=5mA): Electrical Specifications Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions. Parameter Device Symbol Min Typ Max Unit All VIN 36 48 75 Vdc (VIN=36V to 75V, IO=IO, max) All IIN,max 14.0 Adc Inrush Transient All It 2 A2s Input Reflected Ripple Current, peak-to-peak (5Hz to 20MHz, 12μH source impedance; VIN=0V to 75V, IO= IOmax ; see Figure 7) All Input Ripple Rejection (120Hz) All Operating Input Voltage (see Figure 12 for VIN MIN when using trim-up feature) Maximum Input Current 2 20 50 mAp-p dB CAUTION: This power module is not internally fused. An input line fuse must always be used. This power module can be used in a wide variety of applications, ranging from simple standalone operation to being an integrated part of complex power architecture. To preserve maximum flexibility, internal fusing is not included. Always use an input line fuse, to achieve maximum safety and system protection. The safety agencies require a time-delay or fast-acting fuse with a maximum rating of 25 A in the ungrounded input connection (see Safety Considerations section). Based on the information provided in this data sheet on inrush energy and maximum dc input current, the same type of fuse with a lower rating can be used. Refer to the fuse manufacturer’s data sheet for further information. November 20, 2013 ©2012 General Electric Company. All rights reserved. Page 2 GE Data Sheet JRCW016A0R Orca Series; DC-DC Converter Power Modules 36–75 Vdc Input; 28.0Vdc Output; 16Adc Output Electrical Specifications (continued) Parameter Device All Output Voltage Set-point (VIN=VIN,nom, IO=IO, max, Tc =25°C) Output Voltage Set-Point Total Tolerance (Over all operating input voltage, resistive load, and temperature conditions until end of life) All Symbol Min Typ Max Unit VO, set 27.5 28 28.5 Vdc VO 27.0 29.0 Vdc Output Regulation Line (VIN=VIN, min to VIN, max) All 0.1 0.2 %Vo,set Load (IO=IO, min to IO, max) All 0.1 0.2 %Vo,set Temperature (Tc = -40ºC to +100ºC) All 0.25 0.5 %Vo,set All 45 55 mVrms All 80 200 mVpk-pk Output Ripple and Noise on nominal output (VIN=VIN, nom and IO=IO, min to IO, max) RMS (5Hz to 20MHz bandwidth) Peak-to-Peak (5Hz to 20MHz bandwidth) All, except -T -T CO 440 6500 μF CO, 440 470 μF With the Tunable Loop (ESR > 50 mΩ)2 -T CO 440 10,000 μF Output Power (Vo=28V to 35.2V) All PO,max 450 W Output Current All Io 0 16.0 Adc All IO, lim 17.0 All IO, sc All η 93.0 fsw External Capacitance (ESR > 2.5 mΩ)1 Without the Tunable Loop (ESRMAX = 80mΩ)1 Output Current Limit Inception (Constant current until Vo<VtrimMIN , duration <4s) Output Short Circuit Current (VO≤ 0.25Vdc) Efficiency VIN=VIN, nom, Tc=25°C IO=IO, max , VO= VO,set Switching Frequency 21.0 Adc 30 Arms 93.5 % 175 kHz Dynamic Load Response (Io/t=1A/10s; Vin=Vin,nom; Tc=25°C; Tested with a 470 μF aluminum and a 10 µF ceramic capacitor across the load.) Load Change from Io= 50% to 75% of Io,max: Peak Deviation All 3 2 %VO, set Vpk Settling Time (Vo<10% peak deviation) ts 1.5 ms Load Change from Io= 25% to 50% of Io,max: 3 Vpk 2 %VO, set Peak Deviation ts 1.5 ms Settling Time (Vo<10% peak deviation) 1 Note: use a minimum 2 x 220uF output capacitor. Recommended capacitor is Nichicon CD series, 220uF/35V. If the ambient temperature is less than -20OC, use more than 3 of recommended minimum capacitors. External capacitors may require using the new Tunable Loop feature to ensure that the module is stable as well as getting the best transient response. See the Tunable Loop section for details. 2 Isolation Specifications Parameter Isolation Capacitance November 20, 2013 Symbol Min Typ Max Unit Ciso 15 nF ©2012 General Electric Company. All rights reserved. Page 3 GE Data Sheet JRCW016A0R Orca Series; DC-DC Converter Power Modules 36–75 Vdc Input; 28.0Vdc Output; 16Adc Output General Specifications Parameter Device Calculated Reliability based upon Telcordia SR-332 Issue 3: Method I Case 3 (IO=80%IO, max, TA=40°C, airflow = 200 lfm, 90% confidence) Weight All Symbol Min FIT MTBF All Typ Max Unit 109/Hours 214.5 4,661,316 Hours 68 76.4 84 g 2.40 2.69 2.96 oz. Feature Specifications Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions. See Feature Descriptions for additional information. Parameter Device Symbol Min Typ Max Unit All All All All Ion/off Von/off Von/off Ion/off 0 1.0 1.2 5 50 mA Vdc Vdc μA Case 1: Tdelay = Time until VO = 10% of VO,set from application of Vin with Remote On/Off set to ON, All Tdelay Case 2: Tdelay = Time until VO = 10% of VO,set from application of Remote On/Off from Off to On with Vin already applied for at least one second. All Tdelay All Trise Remote On/Off Signal Interface (VIN=VIN, min to VIN, max ; open collector or equivalent, Signal referenced to VIN- terminal) Negative Logic: device code suffix “1” Logic Low = module On, Logic High = module Off Positive Logic: No device code suffix required Logic Low = module Off, Logic High = module On Logic Low - Remote On/Off Current Logic Low - On/Off Voltage Logic High Voltage – (Typ = Open Collector) Logic High maximum allowable leakage current Turn-On Delay and Rise Times (Vin=Vin,nom, IO=IO, max, 25C) Trise = time for VO to rise from 10% of VO,set to 90% of VO,set. 120 ms 20 ms 30 Output Voltage Overshoot (IO=80% of IO, max, TA=25°C) Output Voltage Adjustment (See Feature Descriptions): Output Voltage Remote-sense Range (only for No Trim or Trim down application ) Output Voltage Set-point Adjustment Range (trim) ms 3 % VO, set 2 %Vo,nom __ __ Vtrim 16.0 --- 35.2 Vdc All VO, limit 37 39 Vdc All Tref 105 110 120 °C 35 32 3 36 31 Vdc Vdc Vdc 81 --- 79.5 83 3 81 --- Vdc Vdc Vdc All Vsense All Output Overvoltage Protection Over Temperature Protection (See Feature Descriptions, Figure 17) Input Under Voltage Lockout VIN, UVLO Turn-on Threshold Turn-off Threshold Hysteresis All All All Turn-on Threshold Turn-off Threshold Hysteresis All All All Input Over voltage Lockout November 20, 2013 VIN, OVLO ©2012 General Electric Company. All rights reserved. Page 4 GE Data Sheet JRCW016A0R Orca Series; DC-DC Converter Power Modules 36–75 Vdc Input; 28.0Vdc Output; 16Adc Output Characteristic Curves OUTPUT CURRENT, Io (A) TIME, t (40ms/div) OUTPUT VOLTAGE VO(V) (500mV/div) Figure 5. Typical Start-Up from VIN, on/off enabled prior to VIN step; Co,ext = 470µF. TIME, t (2ms/div) Figure 3. Dynamic Load Change Transient Response from 25% to 50% to 25% of Full Load at Room Temperature and 48 Vin; 0.1A/uS, Co,ext = 440µF. OUTPUT CURRENT IO (A) (5A/div) OUTPUT VOLTAGE VO(V) (500mV/div) Figure 2. Typical Output Ripple and Noise at Room Temperature and 48Vin; Io = Io,max; Co,ext = 440µF. OUTPUT CURRENT IO (A) (5A/div) Figure 4. Typical Start-Up Using negative Remote On/Off; Co,ext = 440µF. INPUT VOLTAGE Vin (V) (20V/div) OUTPUT VOLTAGE VO (V) (50mV/div) TIME, t (1s/div) November 20, 2013 TIME, t (20ms/div) OUTPUT VOLTAGE VO(V) (10V/div) Figure 1. Converter Efficiency versus Output Current. On/Off VOLTAGE VON/OFF(V) (5V/div) EFFICIENCY (%) OUTPUTVOLTAGE VO (V) (10V/div) The following figures provide typical characteristics for the JRCW016A0R (28V, 16A) at 25ºC. The figures are identical for either positive or negative Remote On/Off logic. TIME, t (2ms/div) Figure 6. Dynamic Load Change Transient Response from 50 % to 75% to 50% of Full Load at Room Temperature and 48 Vin; 0.1A/uS, Co,ext = 440µF. ©2012 General Electric Company. All rights reserved. Page 5 GE Data Sheet JRCW016A0R Orca Series; DC-DC Converter Power Modules 36–75 Vdc Input; 28.0Vdc Output; 16Adc Output Test Configurations Design Considerations Input Source Impedance The power module should be connected to a low ac-impedance source. A highly inductive source impedance can affect the stability of the power module. For the test configuration in Figure 7, a 470μF Low ESR aluminum capacitor, CIN , mounted close to the power module helps ensure the stability of the unit. Consult the factory for further application guidelines. Output Capacitance Note: Measure the input reflected-ripple current with a simulated source inductance (LTEST) of 12 µH. Capacitor CS offsets possible battery impedance. Measure the current, as shown above. Figure 7. Input Reflected Ripple Current Test Setup. The JRCW016A0R power module requires a minimum output capacitance of 440µF Low ESR aluminum capacitor, Cout to ensure stable operation over the full range of load and line conditions, see Figure 8. If the ambient temperature is under 20C, it is required to use at least 3 pcs of minimum capacitors in parallel. In general, the process of determining the acceptable values of output capacitance and ESR is complex and is load-dependent. Safety Considerations Note: Use a Cout (470 µF Low ESR aluminum or tantalum capacitor typical), a 0.1 µF ceramic capacitor and a 10 µF ceramic capacitor, and Scope measurement should be made using a BNC socket. Position the load between 51 mm and 76 mm (2 in. and 3 in.) from the module. Figure 8. Output Ripple and Noise Test Setup. Note: All measurements are taken at the module terminals. When socketing, place Kelvin connections at module terminals to avoid measurement errors due to socket contact resistance. Figure 9. Output Voltage and Efficiency Test Setup. November 20, 2013 For safety-agency approval of the system in which the power module is used, the power module must be installed in compliance with the spacing and separation requirements of the end-use safety agency standard, i.e., UL 60950-1, 2nd Ed., CSA No. 60950-1 2nd Ed., and VDE0805-1 EN60950-1, 2nd Ed. For end products connected to –48V dc, or –60Vdc nominal DC MAINS (i.e. central office dc battery plant), no further fault testing is required. *Note: -60V dc nominal battery plants are not available in the U.S. or Canada. For all input voltages, other than DC MAINS, where the input voltage is less than 60V dc, if the input meets all of the requirements for SELV, then: The output may be considered SELV. Output voltages will remain within SELV limits even with internally-generated non-SELV voltages. Single component failure and fault tests were performed in the power converters. One pole of the input and one pole of the output are to be grounded, or both circuits are to be kept floating, to maintain the output voltage to ground voltage within ELV or SELV limits. However, SELV will not be maintained if VI(+) and VO(+) are grounded simultaneously. ©2012 General Electric Company. All rights reserved. Page 6 GE Data Sheet JRCW016A0R Orca Series; DC-DC Converter Power Modules 36–75 Vdc Input; 28.0Vdc Output; 16Adc Output Safety Considerations (continued) For all input sources, other than DC MAINS, where the input voltage is between 60 and 75V dc (Classified as TNV-2 in Europe), the following must be meet, if the converter’s output is to be evaluated for SELV: The input source is to be provided with reinforced insulation from any hazardous voltage, including the ac mains. One Vi pin and one Vo pin are to be reliably earthed, or both the input and output pins are to be kept floating. Another SELV reliability test is conducted on the whole system, as required by the safety agencies, on the combination of supply source and the subject module to verify that under a single fault, hazardous voltages do not appear at the module’s output. All flammable materials used in the manufacturing of these modules are rated 94V-0, or tested to the UL60950 A.2 for reduced thickness. The input to these units is to be provided with a maximum 25 A fast-acting or time-delay fuse in the ungrounded input conection. Feature Description Remote On/Off Two remote on/off options are available. Positive logic turns the module on during a logic high voltage on the ON/OFF pin, and off during a logic low. Negative logic remote On/Off, device code suffix “1”, turns the module off during a logic high and on during a logic low. To turn the power module on and off, the user must supply a switch (open collector or equivalent) to control the voltage (Von/off) between the ON/OFF terminal and the VIN(-) terminal (see Figure 10). Logic low is 0V ≤ Von/off ≤ 1.2V. The maximum Ion/off during a logic low is 1mA, the switch should be maintain a logic low level whilst sinking this current. During a logic high, the typical maximum Von/off generated by the module is 5V, and the maximum allowable leakage current at Von/off = 5V is 50μA. If not using the remote on/off feature: Figure 10. Circuit configuration for using Remote On/Off Implementation. Overcurrent Protection To provide protection in a fault output overload condition, the module is equipped with internal current limiting protection circuitry, and can endure continuous overcurrent by providing constant current output, for up to 4 seconds, as long as the output voltage is greater than VtrimMIN. If the load resistance is to low to support VtrimMIN in an overcurrent condition or a short circuit load condition exists, the module will shutdown immediately. A latching shutdown option is standard. Following shutdown, the module will remain off until the module is reset by either cycling the input power or by toggling the on/off pin for one second. An auto-restart option (4) is also available in a case where an auto recovery is required. If overcurrent greater than 19A persists for few milli-seconds, the module will shut down and auto restart until the fault condition is corrected. If the output overload condition still exists when the module restarts, it will shut down again. This operation will continue indefinitely, until the overcurrent condition is corrected. Over Voltage Protection The output overvoltage protection consists of circuitry that monitors the voltage on the output terminals. If the voltage on the output terminals exceeds the over voltage protection threshold, then the module will shutdown and latch off. The overvoltage latch is reset by either cycling the input power for one second or by toggling the on/off signal for one second. The protection mechanism is such that the unit can continue in this condition until the fault is cleared. An auto-restart option (4) is also available in a case where an auto recovery is required. For positive logic, leave the ON/OFF pin open. For negative logic, short the ON/OFF pin to VIN(-). November 20, 2013 ©2012 General Electric Company. All rights reserved. Page 7 GE Data Sheet JRCW016A0R Orca Series; DC-DC Converter Power Modules 36–75 Vdc Input; 28.0Vdc Output; 16Adc Output Feature Description (continued) 35 Remote sense [Vo(+)–Vo(-)] – [SENSE(+) – SENSE(-)] 2% of Vo,nom The voltage between the Vo(+) and Vo(-) terminals must not exceed the minimum output overvoltage shut-down value indicated in the Feature Specifications table. This limit includes any increase in voltage due to remote-sense compensation and output voltage set-point adjustment (trim). See Figure 11. If not using the remote-sense feature to regulate the output at the point of load, then connect SENSE(+) to Vo(+) and SENSE(-) to Vo(-) at the module. Although the output voltage can be increased by both the remote sense and by the trim, the maximum increase for the output voltage is not the sum of both. The maximum increase is the larger of either the remote sense or the trim. The amount of power delivered by the module is defined as the voltage at the output terminals multiplied by the output current. When using remote sense and trim: the output voltage of the module can be increased, which at the same output current would increase the power output of the module. Care should be taken to ensure that the maximum output power of the module remains at or below the maximum rated power. Upper Trim Limit 30 Vout (V) Remote sense minimizes the effects of distribution losses by regulating the voltage at the remote-sense connections (see Figure 11). For No Trim or Trim down application, the voltage between the remote-sense pins and the output terminals must not exceed the output voltage sense range given in the Feature Specifications table i.e.: 25 Lower Trim Limit 20 15 35 40 45 50 55 Vin (V) 60 65 70 75 Figure 12. Output Voltage Trim Limits vs. Input Voltage. Trim Down – Decrease Output Voltage With an external resistor (Radj_down) between the TRIM and SENSE(-) pins, the output voltage set point (Vo,adj) decreases (see Figure 13). The following equation determines the required external-resistor value to obtain a percentage output voltage change of %. For output voltages: VO,nom = 28V Without –T Option With –T Option 100 Radj _ down 2 k % 1000 Radj _ down 11k % Where, % Vo , nom Vdesired 100 Vo , nom Vdesired = Desired output voltage set point (V). Figure 11. Effective Circuit Configuration for Single-Module Remote-Sense Operation Output Voltage. Output Voltage Programming Trimming allows the user to increase or decrease the output voltage set point of a module. Trimming down is accomplished by connecting an external resistor between the TRIM pin and the SENSE(-) pin. Trimming up is accomplished by connecting external resistor between the SENSE(+) pin and TRIM pin. The trim resistor should be positioned close to the module. Certain restrictions apply to the input voltage lower limit when trimming the output voltage to the maximum. See Figure 12 for the allowed input to output range when using trim. If not using the trim down feature, leave the TRIM pin open. November 20, 2013 Figure 13. Circuit Configuration to Decrease Output Voltage. Trim Up – Increase Output Voltage With an external resistor (Radj_up) connected between the SENSE(+) and TRIM pins, the output voltage set point (Vo,adj) increases (see Figure 14). The following equation determines the required externalresistor value to obtain a percentage output voltage change of %. ©2012 General Electric Company. All rights reserved. Page 8 GE Data Sheet JRCW016A0R Orca Series; DC-DC Converter Power Modules 36–75 Vdc Input; 28.0Vdc Output; 16Adc Output Feature Description (continued) To trim up the output of a nominal 28V module, without –T option, to 30.8V For output voltages: VO,nom = 28V Without –T Option R adj _ up (100 %) (100 ( 2 %) V O , nom 1 . 225 % % k With –T Option 27122 Radj _ up 15.12 k % Where, Vdesired Vo , nom % 100 Vo , nom Vdesired = Desired output voltage set point (V). % 30.8 28 100 10.0% 28 R adj 28 (100 10 ) (100 ( 2 10 ) 10 1 . 225 10 _ up Radj_up = 239kΩ Active Voltage Programming For both the JRCW016A0Rx and JRCW016A0Rx-T, a DigitalAnalog converter (DAC), capable of both sourcing and sinking current, can be used to actively set the output voltage, as shown in Figure 15. The value of RG will be dependent on the voltage step and range of the DAC and the desired values for trim-up and trim-down ∆%. Please contact your GE technical representative to obtain more details on the selection for this resistor. Figure 14. Circuit Configuration to Increase Output Voltage. The voltage between the Vo(+) and Vo(-) terminals must not exceed the minimum output overvoltage shut-down value indicated in the Feature Specifications table. This limit includes any increase in voltage due to remote- sense compensation and output voltage set-point adjustment (trim). See Figure 11. Although the output voltage can be increased by both the remote sense and by the trim, the maximum increase for the output voltage is not the sum of both. The maximum increase is the larger of either the remote sense or the trim. The amount of power delivered by the module is defined as the voltage at the output terminals multiplied by the output current. When using remote sense and trim, the output voltage of the module can be increased, which the same output current would increase the power output of the module. Care should be taken to ensure that the maximum output power of the module remains at or below the maximum rated power. Examples: To trim down the output of a nominal 28V module, without –T option, to 16.8V % 28 16.8 100 40% 28 100 Radj _ down 2 0.5k 40 November 20, 2013 Figure 15. Circuit Configuration to Actively Adjust the Output Voltage. Tunable Loop The JRCW016A0Rx-T modules have a new feature that optimizes transient response of the module called Tunable Loop. External capacitors are usually added to the output of the module for two reasons: to reduce output ripple and noise and to reduce output voltage deviations from the steadystate value in the presence of dynamic load current changes. Adding external capacitance however affects the voltage control loop of the module, typically causing the loop to slow down with sluggish response. Larger values of external capacitance could also cause the module to become unstable. The Tunable Loop allows the user to externally adjust the voltage control loop to match the filter network connected to the output of the module. The Tunable Loop is implemented by connecting a series R-C between the SENSE(+) and TRIM pins of the module, as shown in Fig. 16. This R-C allows the user to externally adjust the voltage loop feedback compensation of the module. ©2012 General Electric Company. All rights reserved. Page 9 GE Data Sheet JRCW016A0R Orca Series; DC-DC Converter Power Modules 36–75 Vdc Input; 28.0Vdc Output; 16Adc Output The thermal data presented here is based on physical measurements taken in a wind tunnel, using automated thermo-couple instrumentation to monitor key component temperatures: FETs, diodes, control ICs, magnetic cores, ceramic capacitors, opto-isolators, and module pwb conductors, while controlling the ambient airflow rate and temperature. For a given airflow and ambient temperature, the module output power is increased, until one (or more) of the components reaches its maximum derated operating temperature, as defined in IPC-9592. This procedure is then repeated for a different airflow or ambient temperature until a family of module output derating curves is obtained. Figure 16. Circuit diagram showing connection of RTUNE and CTUNE to tune the control loop of the module. Table 1 shows the recommended values of RTUNE and CTUNE for different values of ceramic output capacitors up to 8000 F that might be needed for an application to meet output ripple and noise requirements. Table 1. General recommended values of of RTUNE and CTUNE for Vout=28V and various external ceramic capacitor combinations. Cout(µF) 1100 2200 4400 6600 8800 ESR (mΩ) 60 30 15 10 7.5 RTUNE 12k 4.7k 1.8k 820 390 CTUNE 220nF 220nF 220nF 220nF 220nF Please contact your GE technical representative to obtain more details of this feature as well as for guidelines on how to select the right value of external R-C to tune the module for best transient performance and stable operation for other output capacitance values. Over Temperature Protection The JRCW016A0R module provides a non-latching over temperature protection. A temperature sensor monitors the operating temperature of the converter. If the reference temperature, TREF 1, (see Figure 17) exceeds a threshold of 115 ºC (typical), the converter will shut down and disable the output. When the base plate temperature has decreased by approximately 20 ºC the converter will automatically restart. The module can be restarted by cycling the dc input power for at least one second or by toggling the remote on/off signal for at least one second. Heat-dissipating components inside the unit are thermally coupled to the case. Heat is removed by conduction, convection, and radiation to the surrounding environment. For reliable operation this temperature should not exceed 100ºC at either TREF 1 or TREF 2 for applications using forced convection airflow or cold plate applications. The output power of the module should not exceed the rated power for the module as listed in the ordering Information table. Although the maximum TREF temperature of the power modules is discussed above, you can limit this temperature to a lower value for extremely high reliability. Thermal Considerations The power modules operate in a variety of thermal environments; however, sufficient cooling should be provided to help ensure reliable operation of the unit. Heat-dissipating components inside the unit are thermally coupled to the case. Heat is removed by conduction, convection, and radiation to the surrounding environment. Proper cooling can be verified by measuring the case temperature. Peak temperature (TREF) occurs at the position indicated in Figure 17. Considerations include ambient temperature, airflow, module power dissipation, and the need for increased reliability. A reduction in the operating temperature of the module will result in an increase in reliability. November 20, 2013 Figure 17. Case (TREF ) Temperature Measurement Location (top view). ©2012 General Electric Company. All rights reserved. Page 10 GE Data Sheet JRCW016A0R Orca Series; DC-DC Converter Power Modules 36–75 Vdc Input; 28.0Vdc Output; 16Adc Output Thermal derating is presented for two different applications: 1) Figure 18, the JRCW016A0R module is thermally coupled to a cold plate inside a sealed clamshell chassis, without any internal air circulation; and 2) Figure 19,20 and 21, the JRCW016A0R module is mounted in a traditional open chassis or cards with forced air flow. In application 1, the module is cooled entirely by conduction of heat from the module primarily through the top surface to a cold plate, with some conduction through the module’s pins to the power layers in the system board. For application 2, the module is cooled by heat removal into a forced airflow that passes through the interior of the module and over the top base plate and/or attached heatsink. Output Current, IO (A) Thermal Derating Ambient Temperature, TA (oC) Cold plate (inside surface) temperature (ºC) Figure 18. Output Power Derating for JRCW016A0R in Conduction cooling (cold plate) applications; Ta <70ºC adjacent to module; VIN = VIN,NOM Output Current, IO (A) Output Current, IO (A) Figure 20. Derating Output Current vs. local Ambient temperature and Airflow, 0.5” Heatsink, Vin=48V, airflow from Vi(-) to Vi(+). Ambient Temperature, TA (oC) Output Current, IO (A) Figure 21. Derating Output Current vs. local Ambient temperature and Airflow, 1.0” Heatsink, Vin=48V, airflow from Vi(-) to Vi(+). Layout Considerations The JRCW016A0R power module series are constructed using a single PWB with integral base plate; as such, component clearance between the bottom of the power module and the mounting (Host) board is limited. Avoid placing copper areas on the outer layer directly underneath the power module. Post Solder Cleaning and Drying Considerations Ambient Temperature, TA (oC) Figure 19. Derating Output Current vs. local Ambient temperature and Airflow, No Heatsink, Vin=48V, airflow from Vi(-) to Vi(+). November 20, 2013 Post solder cleaning is usually the final circuit-board assembly process prior to electrical board testing. The result of inadequate cleaning and drying can affect both the reliability of a power module and the testability of the finished circuit-board assembly. For guidance on appropriate soldering, cleaning and drying procedures, refer to GE Board Mounted Power Modules: Soldering and Cleaning Application Note. ©2012 General Electric Company. All rights reserved. Page 11 GE Data Sheet JRCW016A0R Orca Series; DC-DC Converter Power Modules 36–75 Vdc Input; 28.0Vdc Output; 16Adc Output Through-Hole Lead-Free Soldering Information The RoHS-compliant through-hole products use the SAC (Sn/Ag/Cu) Pb-free solder and RoHS-compliant components. They are designed to be processed through single or dual wave soldering machines. The pins have an RoHS-compliant finish that is compatible with both Pb and Pb-free wave soldering processes. A maximum preheat rate of 3C/s is November 20, 2013 suggested. The wave preheat process should be such that the temperature of the power module board is kept below 210C. For Pb solder, the recommended pot temperature is 260C, while the Pb-free solder pot is 270C max. The JRCW016A0R can not be processed with paste-through-hole Pb or Pb-free reflow process. If additional information is needed, please consult with your GE representative for more details. ©2012 General Electric Company. All rights reserved. Page 12 GE Data Sheet JRCW016A0R Orca Series; DC-DC Converter Power Modules 36–75 Vdc Input; 28.0Vdc Output; 16Adc Output Mechanical Outline for Through-Hole Module Dimensions are in millimeters and [inches]. Tolerances: x.x mm 0.5 mm [x.xx in. 0.02 in.] (Unless otherwise indicated) x.xx mm 0.25 mm [x.xxx in 0.010 in.] *Top side label includes GE name, product designation, and data code. TOP VIEW* SIDE VIEW** BOTTOM VIEW Pin 1 2 3 4 5 6 7 8 9 Description Vin (+) On/Off Baseplate Vin (–) Vout (–) Sense (-) Trim Sense (+) Vout (+) November 20, 2013 ©2012 General Electric Company. All rights reserved. Page 13 GE Data Sheet JRCW016A0R Orca Series; DC-DC Converter Power Modules 36–75 Vdc Input; 28.0Vdc Output; 16Adc Output Recommended Pad Layout for Through Hole Module Dimensions are in millimeters and [inches]. Tolerances: x.x mm 0.5 mm [x.xx in. 0.02 in. ] (Unless otherwise indicated) x.xx mm 0.25 mm [x.xxx in 0.010 in. ] November 20, 2013 ©2012 General Electric Company. All rights reserved. Page 14 GE Data Sheet JRCW016A0R Orca Series; DC-DC Converter Power Modules 36–75 Vdc Input; 28.0Vdc Output; 16Adc Output Ordering Information Please contact your GE Sales Representative for pricing, availability and optional features. Table 2. Device Code Input Voltage 48V (36-75Vdc) 48V (36-75Vdc) 48V (36-75Vdc) 48V (36-75Vdc) 48V (36-75Vdc) 48V (36-75Vdc) 48V (36-75Vdc) Output Voltage 28V 28V 28V 28V 28V 28V 28V Output Current 16A 16A 16A 16A 16A 16A 16A Efficiency 93.5% 93.5% 93.5% 93.5% 93.5% 93.5% 93.5% Connector Type Through hole Through hole Through hole Through hole Through hole Through hole Through hole Product codes JRCW016A0R41Z JRCW016A0R41-18Z JRCW016A0R64-18Z JRCW016A0R64-35Z JRCW016A0R641-18Z JRCW016A0R41-TZ JRCW016A0R41-18TZ Comcodes CC109168943 CC109168968 150020445 150034268 CC109169371 CC109168951 CC109168976 Table 3. Device Options Contact Us For more information, call us at USA/Canada: +1 888 546 3243, or +1 972 244 9288 Asia-Pacific: +86.021.54279977*808 Europe, Middle-East and Africa: +49.89.878067-280 India: +91.80.28411633 www.ge.com/powerelectronics November 20, 2013 ©2012 General Electric Company. All rights reserved. Version 1.26