GE Data Sheet JNC350R Power Modules; DC-DC Converters 18 - 36 Vdc Input; 28Vdc Output; 350W Output Features Compliant to RoHS EU Directive 2011/65/EU (Z versions) Compliant to RoHS EU Directive 2011/65/EU under exemption 7b (Lead solder exemption). Exemption 7b will expire after June 1, 2016 at which time this produc twill no longer be RoHS compliant (non-Z versions) Compliant to IPC-9592, Class II, Category 2 High power density: 129 W/in3 Industry standard half-brick pin-out Industry standard half-brick footprint 57.7mm x 60.7mm x 12.7mm (2.27" x 2.39" x 0.5") RoHS Compliant Applications RF Power Amplifier Wireless Networks Switching Networks Options 2:1 input voltage range Low output ripple and noise Constant switching frequency Single tightly regulated output No minimum load required Remote Sense Output voltage adjustment trim, 16.8Vdc to 32.0Vdc Accepts transient overloads without shutdown Latch after output OVP/OCP fault shutdown Over temperature protection auto restart Wide operating case temperature range (-40C to 100C) Auto-restart after either output OCP or OVP fault shutdown ("3" option code) Auto-restart only after output OCP fault shutdown ("4" option code) Shorter pins ("6" or "8" option code) Unthreaded heatsink holes (-18 option code) CE mark meets 2006/95/EC directives Tunable LoopTM for transient response optimization (-T option code) UL60950-1/CSA C22.2 No. 60950-1-03 Certified (CCSAUS) and VDE 0805:2001-12 (EN60950-1) Licensed ISO** 9001 and ISO 14001 certified manufacturing facilities Description The JNC350R series of dc-dc converters are a new generation of isolated DC/DC power modules providing up to 350W output power in an industry standard half-brick 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 heat sink for hightemperature 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 LoopTM, which 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. October 5, 2015 (c)2012 General Electric Company. All rights reserved. GE Data Sheet JNC350R Power Modules; DC-DC Converters 18 - 36 Vdc Input; 28Vdc Output; 350W 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 40 Vdc Transient, operational (100 ms) All VIN,trans -0.3 50 Vdc All Ta -40 85 C All Tc -40 100 C Storage Temperature All Tstg -55 125 C I/O Isolation Voltage: Input to Case, Input to Output All 1500 Vdc All 500 Vdc Operating Ambient Temperature Please contact your GE Sales representative for information on thermal derating when using forced airflow. Operating Case Temperature (See Thermal Considerations section, Figure 20) Output to Case 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 18 24 36 Vdc All IIN,max 25 Adc Inrush Transient All I2t 2 A2s Input Reflected Ripple Current, peak-to-peak (5Hz to 20MHz, 12H source impedance; VIN=0V to 36V, IO= IOmax ; see Figure 7) All 25 mAp-p Operating Input Voltage (see Figure 12 for VIN, min when using trim-up feature) Maximum Input Current (VIN=18V to 36V, IO=IO, max) 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 fast-acting fuse with a maximum rating of 30 A (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. October 5, 2015 (c)2012 General Electric Company. All rights reserved. Page 2 GE Data Sheet JNC350R Power Modules; DC-DC Converters 18 - 36 Vdc Input; 28Vdc Output; 350W Output Electrical Specifications (continued) Parameter Device All Output Voltage Set-point (VIN=VIN,nom, IO=IO, max, Tc =25C) Output Voltage1 (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 27.15 28.85 Vdc Output Regulation Line (VIN=VIN, min to VIN, max) All 0.1 0.2 %Vo,set Load (IO=IO, min to IO, max)1 All 0.1 0.2 %Vo,set Temperature (Tc = -40C to +100C) All 0.5 1.5 %Vo,set RMS (5Hz to 20MHz bandwidth) All 45 55 mVrms Peak-to-Peak (5Hz to 20MHz bandwidth)2 All 80 200 mVpk-pk Output Ripple and Noise on nominal output (VIN=VIN, nom and IO=IO, min to IO, max) All, except T -T -T External Capacitance (ESR > 50 m)3 Without the Tunable LoopTM (ESRMAX = 80m)3 With the Tunable LoopTM (ESR > 50 m)4 CO 440 6500 F CO CO 440 440 470 8,000 F F Output Current2 All Io 0 Output Current Limit Inception All IO, lim 13.1 Output Short Circuit Current (VO 0.25Vdc) All IO, sc Efficiency VIN=VIN, nom, Tc=25C IO=IO, max , VO= VO,set All fsw Switching Frequency 12.5 Adc 17.5 Adc 30 Arms 91 % 300 kHz Dynamic Load Response (Io/t=1A/10s; Vin=Vin,nom; Tc=25C; Tested with a 470 F aluminum and a 10 F ceramic capacitor across the load.) Load Change from Io= 50% to 75% of Io,max: Peak Deviation All %VO, set Vpk 2 Settling Time (Vo<10% peak deviation) ts 1.5 ms Load Change from Io= 25% to 50% of Io,max: %VO, set Vpk 2 Peak Deviation ts 1.5 ms Settling Time (Vo<10% peak deviation) 1. For Vin 19V, and case temperatures 85C, output voltage regulation is relaxed to -2.5%Vo,set. 2. When operating at output current between 0Adc and 1Adc, output ripple may exceed maximum pk-pk limits. 3. Use a minimum 2 x 220uF output capacitor. Recommended capacitor is Nichicon CD series, 220uF/35V. If the ambient temperature is less than 0C, use 3x of the minimum CO. 4. External capacitors may require using the new Tunable LoopTM feature to ensure that the module is stable as well as getting the best transient response. See the Tunable LoopTM section for details. Isolation Specifications Parameter Symbol Min Typ Max Unit Isolation Capacitance Ciso 15 nF Isolation Resistance Riso 10 M Min Typ Max Unit General Specifications Parameter Device Calculated Reliability based upon Telcordia SR-332 Issue 2: Method I Case 3 (IO=80%IO, max, TA=40C, airflow = 200 lfm, 90% confidence) All Weight All October 5, 2015 Symbol FIT 341.8 109/Hours MTBF 2,925,365 Hours (c)2012 General Electric Company. All rights reserved. 78 2.8 g oz. Page 3 GE Data Sheet JNC350R Power Modules; DC-DC Converters 18 - 36 Vdc Input; 28Vdc Output; 350W Output 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 A 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 25 30 ms Trise = time for VO to rise from 10% of VO,set to 90% of VO,set. All Trise 25 ms 3 % VO, set 2 %Vo,nom 32.0 Vdc 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, Tc=25C) Case 1: Tdelay = Time until VO = 10% of VO,set from application of Vin with Remote On/Off set to ON, 85 Output Voltage Overshoot (IO=80% of IO, max, Tc =25C) Output Voltage Adjustment (See Feature Descriptions): ms Output Voltage Remote-sense Range (only for No Trim or Trim down application ) All Vsense Output Voltage Set-point Adjustment Range (trim) All Vtrim 16.8 All VO, limit 34 38 Vdc All Tref 110 C 17 18 Vdc Output Overvoltage Protection Over Temperature Protection __ __ __ (See Feature Descriptions) Input Under Voltage Lockout VIN, UVLO Turn-on Threshold All Turn-off Threshold All Hysteresis All Input Over voltage Lockout October 5, 2015 15 16 Vdc 1.5 Vdc VIN, OVLO Turn-on Threshold All 39 41 Vdc Turn-off Threshold All 41 42 Vdc Hysteresis All --- 2 --- Vdc (c)2012 General Electric Company. All rights reserved. Page 4 GE Data Sheet JNC350R Power Modules; DC-DC Converters 18 - 36 Vdc Input; 28Vdc Output; 350W Output Characteristic Curves The following figures provide typical characteristics for the JNC350R (28V, 12.5A) at 25C. The figures are identical for either positive or negative Remote On/Off logic. 95 EFFICIENCY (%) Vin=36V 85 Vin=24V 80 75 70 0 2.5 5 7.5 10 12.5 OUTPUT CURRENT, Io (A) OUTPUT VOLTAGE VO (V) (50mV/div) Figure 2. Typical Output Ripple and Noise at Room Temperature and 24Vin; Io = Io,max; Co,ext = 470F. Figure 5. Typical Start-Up from VIN, on/off enabled prior to VIN step; Co,ext = 470F. OUTPUT CURRENT OUTPUT VOLTAGE VO(V) (200mV/div) IO (A) (5A/div) TIME, t (20ms/div) OUTPUT CURRENT OUTPUT VOLTAGE IO (A) (5A/div) VO(V) (200mV/div) TIME, t (1s/div) TIME, t (20ms/div) Figure 4. Typical Start-Up Using negative Remote On/Off; Co,ext = 470F. INPUT VOLTAGE OUTPUT VOLTAGE VO(V) (10V/div) Vin (V) (10V/div) Figure 1. Converter Efficiency versus Output Current. On/Off VOLTAGE OUTPUTVOLTAGE VO (V) (10V/div) VON/OFF(V) (2V/div) Vin=18V 90 TIME, t (1ms/div) Figure 3. Standard JNC350R Transient Response to Dynamic Load Change from 25% to 50% to 25% of Full Load at Room Temperature and 24 Vdc Input; 0.1A/uS, Co,ext = 470F October 5, 2015 TIME, t (1ms/div) Figure 6. Standard JNC350R Transient Response to Dynamic Load Change from 50% to 75% to 50% of Full Load at Room Temperature and 24 Vdc Input; 0.1A/uS, Co,ext = 470F (c)2012 General Electric Company. All rights reserved. Page 5 GE Data Sheet JNC350R Power Modules; DC-DC Converters 18 - 36 Vdc Input; 28Vdc Output; 350W 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 470F 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 H. Capacitor CS offsets possible battery impedance. Measure the current, as shown above. Figure 7. Input Reflected Ripple Current Test Setup. The JNC350R power module requires a minimum output capacitance of 440F 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-dependant. Safety Considerations Note: Use a Cout (470 F Low ESR aluminum or tantalum capacitor typical), a 0.1 F ceramic capacitor and a 10 F 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. 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., UL60950-1, CSA C22.2 No. 60950-1-03, EN60950-1 and VDE 0805:2001-12. 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. 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 30 A fast-acting or fuse in the unearthed lead. 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. October 5, 2015 (c)2012 General Electric Company. All rights reserved. Page 6 GE Data Sheet JNC350R Power Modules; DC-DC Converters 18 - 36 Vdc Input; 28Vdc Output; 350W Output 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 50A. If not using the remote on/off feature: For positive logic, leave the ON/OFF pin open. For negative logic, short the ON/OFF pin to VIN(-). 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 over-current condition is corrected. Over-Voltage Protection (OVP) 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 OVP auto-restart option (code = 3, see Table 2) is also available in a case where an auto recovery is required. Once the module has shutdown, after a period of approximately 4.5 seconds, the module will restart. If the output overload condition still exists when the module restarts, it will shut down again. This operation will continue indefinitely, until the over-current condition is corrected. Remote sense Figure 10. Circuit configuration for using Remote On/Off Implementation. Over-Current Protection (OCP) To provide protection in a fault output overload condition, the module is equipped with internal current limiting protection circuitry, and can endure over-current transient overloads depending upon the duration and amplitude of the overload. An internal buffer measures the relative product of the duration and amplitude of the overload and allows operation until a limit threshold is reached. For lower amplitude overloads, the module will operate without shutdown for a longer transient overload. If the overload amplitude is larger, the module will reach shutdown in a shorter period of time. A latching shutdown option is standard. If over-current persists for beyond the overload buffer, the module will shut down and remain off until the module is reset by either cycling the input power or by toggling the on/off pin for one second. An OCP auto-restart option (code = 3 or 4, see Table 2) is also available in a case where an auto recovery is required. If over-current persists for few milli-seconds, the module will shut down and auto restart until the fault October 5, 2015 Remote sense minimizes the effects of distribution losses by regulating the voltage at the remote-sense connection (see Figure 11). For No Trim or Trim down application, the voltage between the remote-sense pin and the output terminal must not exceed the output voltage sense range given in the Feature Specifications table i.e.: SENSE(+)-Vo(+) 2% 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 remotesense compensation and output voltage set-point adjustment (trim). See Figure 11. Do not connect SENSE(-) to the Vo(-) or Rload(-) as there is a 0 connection internal to the module. If not using the remote-sense feature to regulate the output at the point of load, then connect SENSE(+) to Vo(+). 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. (c)2012 General Electric Company. All rights reserved. Page 7 GE Data Sheet JNC350R Power Modules; DC-DC Converters 18 - 36 Vdc Input; 28Vdc Output; 350W Output Feature Description (continued) Figure 11. Effective Circuit Configuration for SingleModule Remote-Sense Operation Output Voltage. Figure 13. Circuit Configuration to Decrease Output Voltage, Standard JNC350R. Output Voltage Programming Trimming allows the user to increase or decrease the output voltage set point of a module. 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. 34 32 30 28 ) V (26 t u24 o V22 20 18 16 14 Trim Up - Increase Output Voltage Trimming up is accomplished by connecting external resistor between the SENSE(+) pin and TRIM pin.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 %. For output voltages: 28V Upper Trim Limit R adj Lower Trim Limit up 18 20 22 24 26 28 Vin (V) 30 32 k Where, % 16 (100 %) V (100 ( 2 %) O , nom 1 . 225 % % 34 36 38 Figure 12. Output voltage trim limits vs. Input Voltage. Vdesired Vo , nom 100 Vo , nom Vdesired = Desired output voltage set point (V). Modules without the -T Option Trim Down - Decrease Output Voltage Trimming down is accomplished by connecting an external resistor between the TRIM pin and the SENSE(-) pin. 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: 28V 100 Radj down 2 k % Figure 14. Circuit Configuration to Increase Output Voltage, Standard JNC350R. Where, % Vo , nom Vdesired 100 Vo , nom Vdesired = Desired output voltage set point (V). October 5, 2015 (c)2012 General Electric Company. All rights reserved. Page 8 GE Data Sheet JNC350R Power Modules; DC-DC Converters 18 - 36 Vdc Input; 28Vdc Output; 350W Output Feature Description (continued) Examples: To trim down the output of a nominal 28V module to 16.8V % 28V 16.8V 100 28V The following equation determines the required externalresistor value to obtain a percentage output voltage change of %. For output voltages: 28V 488.5 Radj up k % % = 40 100 Radj down 2 k 40 Where, Radj - down = 0.5 k To trim up the output of a nominal 28V module to 30.8V % 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 16). 30.8V 28V 100 28V % Vdesired Vo , nom 100 Vo , nom Vdesired = Desired output voltage set point (V). % = 10 28 (100 10 ) (100 ( 2 10 ) Radj up k 10 1.225 10 Radj - up = 239.4 k Modules with the -T Option 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 15). The following equation determines the required external-resistor value to obtain a percentage output voltage change of %. For output voltages: 28V Figure 16. Circuit Configuration to Increase Output Voltage, JNC350Rx-T option. 10631.45 Radj down 111.2 k % Where, % Vo , nom Vdesired 100 Vo , nom Vdesired = Desired output voltage set point (V). Figure 15. Circuit Configuration to Decrease Output Voltage, JNC350R-T option. October 5, 2015 (c)2012 General Electric Company. All rights reserved. Page 9 GE Data Sheet JNC350R Power Modules; DC-DC Converters 18 - 36 Vdc Input; 28Vdc Output; 350W Output Feature Description (continued) Examples: To trim down the output of a nominal 28V JNC350-T module to 16.8V % 28V 16.8V 100 28V steady-state 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 LoopTM allows the user to externally adjust the voltage control loop to match the filter network connected to the output of the module. The Tunable LoopTM is implemented by connecting a series R-C between the SENSE(+) and TRIM pins of the module, as shown in Figure 18. This R-C allows the user to externally adjust the voltage loop feedback compensation of the module. % = 40 10631.45 Radj down 111.2 k 40 Radj - down = 154.5 k To trim up the output of a nominal 28V JNC350-T module to 30.8V % 30.8V 28V 100 28V % = 10 488.5 Radj up k 10 Radj - up = 48.8 k Active Voltage Programming For both the JNC350Rx and JNC350Rx-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 17. 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 17. Circuit Configuration to Actively Adjust the Output Voltage. Tunable LoopTM The JNC350Rx-T modules have a new feature that optimizes transient response of the module called Tunable LoopTM. 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 October 5, 2015 Figure 18. Circuit diagram showing connection of RTUNE and CTUNE to tune the control loop of the module. Recommended values of RTUNE and CTUNE for different output capacitor combinations are given in Tables 1 and 2. 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. Selecting RTUNE and CTUNE according to Table 2 will ensure stable operation of the module In applications with tight output voltage limits in the presence of dynamic current loading, additional output capacitance will be required. Table 2 lists recommended values of RTUNE and CTUNE in order to meet 2% output voltage deviation limits for some common output voltages in the presence of a 6A to 12A step change (50% of full load), with an input voltage of 24V. Table 1. General recommended values of of RTUNE and CTUNE for Vout=28V and various external ceramic capacitor combinations. Cout(F) 1320 2200 4400 6600 8000 RTUNE(k CTUNE(pF) 1000 470 100 6800 36.5 36.5 36.5 10000 10000 10000 Table 2. Recommended values of RTUNE and CTUNE to obtain transient deviation of 2% of Vout for a 6A step load with Vin=24V. Vo 32V Co(uF) 1320 RTUNE(k 1000 CTUNE(pF) 470 28V 1320 301 1500 (c)2012 General Electric Company. All rights reserved. 25V 1320 301 1500 22V 1320 301 2200 19V 16.8V 1320 1540 301 301 3300 6800 Page 10 GE Data Sheet JNC350R Power Modules; DC-DC Converters 18 - 36 Vdc Input; 28Vdc Output; 350W Output V(mV) 340 320 280 280 260 290 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 RC to tune the module for best transient performance and stable operation for other output capacitance values. Over Temperature Protection The JNC350R module provides with non-latching over temperature protection. A temperature sensor monitors the operating temperature of the converter. If the reference temperature exceeds a threshold of 110C (typical) at the center of the baseplate, the converter will shut down and disable the output. When the baseplate temperature has decreased by approximately 20 C 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. Figure 19. Case (TREF ) Temperature Measurement Location (top view). Thermal Derating The thermal derating presented in Figure 20 has the 375 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 19. 350 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. The thermal data presented here is based on physical measurements taken in a wind tunnel. For reliable operation this temperature should not exceed 100C at TREF for cold plate. 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. October 5, 2015 Output Power (W) Thermal Considerations 325 300 275 250 20 30 40 50 60 70 80 Baseplate Temperature (C) 90 100 Figure 20. Output Power Derating for JNC350R in Conduction cooling (cold plate) applications; Ta <70C in vicinity of module interior; VIN = 24V. JNC350R module thermally coupled to a cold plate inside a sealed clamshell chassis, without any internal air circulation. Please contact your GE sales representative for information regarding applications where the module is cooled by heat removal into a forced airflow that passes through the interior of the module and over the top baseplate and/or attached heatsink. (c)2012 General Electric Company. All rights reserved. Page 11 GE Data Sheet JNC350R Power Modules; DC-DC Converters 18 - 36 Vdc Input; 28Vdc Output; 350W Output Layout Considerations The JNC350R power module series are aluminum base board packaged style, 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 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. October 5, 2015 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 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. Not all RoHScompliant through-hole products can be processed with paste-through-hole Pb or Pb-free reflow process. Before attempting this soldering process, please consult with your GE representative for more details. (c)2012 General Electric Company. All rights reserved. Page 12 GE Data Sheet JNC350R Power Modules; DC-DC Converters 18 - 36 Vdc Input; 28Vdc Output; 350W Output EMC Considerations The filter circuit schematic and plots in Figure 21 shows a suggested configuration as tested to meet the conducted emission limits of EN55022 Class B. Note: Customer is ultimately responsible for the proper selection, component rating and verification of the suggested parts based on the end application. Symbol C1 - C5 C6 L1, L2 C8 - C11 C7 C12 L3 Component Description SMD Ceramic Capacitor: 1000nF/100V/X7R/1210 SMD Ceramic Capacitor : 100nF/100V/X7R/1206 CM inductor-single phase: 473uH-14A-R5K-1*25.4*12.7mm SMD Ceramic Capacitor: 0.22uF/630V/X7R/2220, meet 1kV endure voltage requirement. Electrolytic capacitor: 470uF, 100V Electrolytic capacitor: 470uF, 35V CM inductor-single phase core: 17uH- R7K-25*15*12; winding: 5TS Vin+: Vin-: Figure 21. EMC considerations. For further information on designing for EMC compliance, please refer to the FLTR100V20 data sheet (FDS01-077EPS). October 5, 2015 (c)2012 General Electric Company. All rights reserved. Page 13 GE Data Sheet JNC350R Power Modules; DC-DC Converters 18 - 36 Vdc Input; 28Vdc Output; 350W Output Mechanical Outline for Through-Hole Module Dimensions are in inches and [millimeters]. Tolerances: x.xx in. 0.02 in. [x.x mm 0.5 mm] (Unless otherwise indicated) x.xxx in 0.010 in. [x.xx mm 0.25 mm] TOP VIEW SIDE VIEW BOTTOM VIEW Pin 1 2 3 October 5, 2015 Description Vin (+) On/Off Baseplate Pin 4 5 6 Description Vin (-) Vout (-) Sense (-) Pin 7 8 9 Description Trim Sense (+) Vout (+) (c)2012 General Electric Company. All rights reserved. Page 14 GE Data Sheet JNC350R Power Modules; DC-DC Converters 18 - 36 Vdc Input; 28Vdc Output; 350W Output Recommended Pad Layout for Through Hole Module Dimensions are in inches and [millimeters]. Tolerances: x.xx in. 0.02 in. [x.x mm 0.5 mm] (Unless otherwise indicated) x.xxx in 0.010 in. [x.xx mm 0.25 mm] October 5, 2015 (c)2012 General Electric Company. All rights reserved. Page 15 GE Data Sheet JNC350R Power Modules; DC-DC Converters 18 - 36 Vdc Input; 28Vdc Output; 350W Output Ordering Information Please contact your GE Sales Representative for pricing, availability and optional features. Table 1. Device Code 24V (18-36Vdc) Output Voltage 28V Output Current 12.5A 24V (18-36Vdc) 28V 12.5A 24V (18-36Vdc) 28V 12.5A Input Voltage 91% Connector Type Through hole JNC350R41Z CC109154927 91% Through hole JNC350R641-18Z CC109161262 91% Through hole JNC350R41-TZ CC109158457 Efficiency Product codes Comcodes Table 2. Device Options Contact Us For more information, call us at USA/Canada: +1 877 546 3243, or +1 972 244 9288 Asia-Pacific: +86.021.54279977*808 Europe, Middle-East and Africa: +49.89.878067-280 www.gecriticalpower.com GE Critical Power reserves the right to make changes to the product(s) or information contained herein without notice, and no liability is assumed as a result of their use or application. No rights under any patent accompany the sale of any such product(s) or information. October 5, 2015 (c)2012 General Electric Company. All International rights reserved. Version 1.02