Data Sheet GE JNW350R Power Modules; DC-DC Converters 36 – 75 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 I, Category 2 3  High power density: 129 W/in  Industry standard half-brick pin-out  Industry standard half-brick footprint 57.7mm x 60.7mm x 12.7mm RoHS Compliant (2.27” x 2.39” x 0.5”)  2:1 input voltage range  Low output ripple and noise Applications  Constant switching frequency  RF Power Amplifier  Single tightly regulated output  Wireless Networks  No minimum load required  Switching Networks  Remote Sense  Output voltage adjustment trim, 16.8V to 32.0V dc dc Options  Accepts transient overloads without shutdown  Auto-restart after either output OCP or OVP fault shutdown (“3” option code)  Latch after output OVP/OCP fault shutdown  Auto-restart only after output OCP fault shutdown  Over temperature protection, auto restart (“4” option code)  Wide operating case temperature range (-40°C to  Shorter pins (“6” or “8” option code) 100°C)  Unthreaded heatsink holes (-18 option code)  CE mark meets 2006/95/EC directives§  Tunable Loop™ for transient response optimization (-  UL60950-1/CSA† C22.2 No. 60950-1-03 Certified T option code) ( CSA ) and VDE‡ 0805:2001-12 (EN60950-1) Licensed C US  ISO** 9001 and ISO 14001 certified manufacturing facilities Description The JNW350R 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 heatsink for high- temperature applications. The output is fully isolated from the input, allowing versatile polarity configurations and TM 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. October 5, 2015 ©2012 General Electric Company. All rights reserved. Data Sheet GE JNW350R Power Modules; DC-DC Converters 36 – 75 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 80 Vdc Transient, operational (≤100 ms) All VIN,trans -0.3 100 Vdc Operating Ambient Temperature Note: When the operating ambient temperature is within All Ta -40 85 °C 55°C ~85°C, the application of the module refers to the derating curves of Figures 21 and 22. Operating Case Temperature All Tc -40 100 °C (See Thermal Considerations section, Figure 20) Storage Temperature All T -55 125 °C stg I/O Isolation Voltage: Input to Case, Input to Output All 1500 V   dc Output to Case All 500 V   dc Electrical Specifications Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions. Parameter Device Symbol Min Typ Max Unit Operating Input Voltage All V 36 48 75 V IN dc (see Figure 12 for VIN, min when using trim-up feature) Maximum Input Current (VIN=36V to 75V, IO=IO, max) All IIN,max 12.5 Adc 2 2 Inrush Transient All It 2 A s Input Reflected Ripple Current, peak-to-peak (5Hz to 20MHz, 12μH source impedance; VIN=0V to 75V, IO= All 20 mAp-p IOmax ; see Figure 7) Input Ripple Rejection (120Hz) All 50 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 20 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 ©2012 General Electric Company. All rights reserved. Page 2 Data Sheet GE JNW350R Power Modules; DC-DC Converters 36 – 75 Vdc Input; 28Vdc Output; 350W Output Electrical Specifications (continued) Parameter Device Symbol Min Typ Max Unit Output Voltage Set-point All VO, set 27.5 28 28.5 Vdc (VIN=VIN,nom, IO=IO, max, Tc =25°C) Output Voltage All (Over all operating input voltage, resistive load, and V 27.15 28.85 V O  dc temperature conditions until end of life) Output Regulation Line (V =V to V) All 0.1 0.2 %V IN IN, min IN, max  o,set Load (I =I to I) All 0.1 0.2 %V O O, min O, max  o,set Temperature (Tc = -40ºC to +100ºC) All  0.5 1.5 %Vo,set Output Ripple and Noise on nominal output (VIN=VIN, nom and IO=IO, min to IO, max) RMS (5Hz to 20MHz bandwidth) All  45 55 mVrms 1 Peak-to-Peak (5Hz to 20MHz bandwidth) All  80 200 mVpk-pk All, except - 2 External Capacitance (ESR > 50 mΩ) CO 440 6500 μF T 2 Without the Tunable Loop™ (ESRMAX = 80mΩ) -T CO 440 470 μF 3 With the Tunable Loop™ (ESR > 50 mΩ) -T CO 440 8,000 μF 1 Output Current All Io 0 12.5 Adc Output Current Limit Inception All IO, lim 13.1  17.5 Adc Output Short Circuit Current (VO≤ 0.25Vdc) All IO, sc 30 Arms Efficiency All η  92  % V =V , T =25°C I =I V = V IN IN, nom c O O, max , O O,set Switching Frequency f 300 kHz sw   Dynamic Load Response (Io/t=1A/10s; V =V ,nom; T =25°C; Tested in in c 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   Vpk 2 %VO, set Settling Time (Vo<10% peak deviation) ts  1.5  ms Load Change from Io= 25% to 50% of Io,max:   Peak Deviation Vpk 2 %VO, set t 1.5 ms Settling Time (Vo<10% peak deviation) s   1. When operating at output current between 0Adc and 1Adc, output ripple may exceed maximum pk-pk limits. 2. Use a minimum 2 x 220uF output capacitor. Recommended capacitor is Nichicon CD series, 220uF/35V. If the ambient temperature is less than 0°C, use 3x of the minimum C . O 3. 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. Isolation Specifications Parameter Symbol Min Typ Max Unit Isolation Capacitance Ciso  15  nF Isolation Resistance Riso 10   MΩ General Specifications Parameter Device Symbol Min Typ Max Unit 9 Calculated Reliability based upon Telcordia SR-332 FIT 379 10 /Hours Issue 2: Method I Case 3 (IO=80%IO, max, TA=40°C, All airflow = 200 lfm, 90% confidence) MTBF 2,638,332 Hours  78  g Weight All 2.8 oz. October 5, 2015 ©2012 General Electric Company. All rights reserved. Page 3 Data Sheet GE JNW350R Power Modules; DC-DC Converters 36 – 75 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 Remote On/Off Signal Interface (V =V to V ; open collector or equivalent, IN IN, min IN, max Signal referenced to V terminal) IN- 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 All I   1.0 mA on/off Logic Low - On/Off Voltage All Von/off 0  1.2 Vdc Logic High Voltage – (Typ = Open Collector) All Von/off  5 Vdc Logic High maximum allowable leakage current All Ion/off   50 μA Turn-On Delay and Rise Times (Vin=Vin,nom, IO=IO, max, Tc=25C) Case 1: T = Time until V = 10% of V from delay O O,set Tdelay 85 ms application of V with Remote On/Off set to ON, All in Case 2: Tdelay = Time until VO = 10% of VO,set from application of Remote On/Off from Off to On with Vin All Tdelay  25 30 ms already applied for at least one second. Trise = time for VO to rise from 10% of VO,set to 90% of All T  25  ms rise VO,set. Output Voltage Overshoot 3 % V O, set (IO=80% of IO, max, Tc =25°C) Output Voltage Adjustment (See Feature Descriptions): Output Voltage Remote-sense Range __ __ All V 2 %V sense o,nom (only for No Trim or Trim down application ) __ Output Voltage Set-point Adjustment Range (trim) All V 16.8 32.0 V trim dc All Output Over-voltage Protection VO, limit 34  38 Vdc Over Temperature Protection All T 110 °C ref   (See Feature Descriptions) Input Under Voltage Lockout VIN, UVLO All Turn-on Threshold 35 36 V dc All Turn-off Threshold 31 32 Vdc All Hysteresis 3 Vdc Input Over voltage Lockout V IN, OVLO All Turn-on Threshold 79.5 81 V  dc All Turn-off Threshold 81 83 V  dc All Hysteresis --- 3 --- Vdc October 5, 2015 ©2012 General Electric Company. All rights reserved. Page 4 Data Sheet GE JNW350R Power Modules; DC-DC Converters 36 – 75 Vdc Input; 28Vdc Output; 350W Output Characteristic Curves The following figures provide typical characteristics for the JNW350R (28V, 12.5A) at 25ºC. The figures are identical for either positive or negative Remote On/Off logic. 95 90 85 Vin=75V Vin=48V Vin=36V 80 75 70 0 2.5 5 7.5 10 12.5 OUTPUT CURRENT, Io (A) TIME, t (20ms/div) Figure 1. Converter Efficiency versus Output Current. Figure 4. Typical Start-Up Using negative Remote On/Off; Co,ext = 470µF. TIME, t (20ms/div) TIME, t (1s/div) Figure 2. Typical Output Ripple and Noise at Room Figure 5. Typical Start-Up from VIN, on/off enabled prior to Temperature and 48Vin; I = I ; C = 470µF. V step; C = 470µF. o o,max o,ext IN o,ext TIME, t (1ms/div) TIME, t (1ms/div) Figure 3. Standard JNW350R Transient Response to Figure 6. Standard JNW350R Transient Response to Dynamic Load Change from 25% to 50% to 25% of Full Dynamic Load Change from 50% to 75% to 50% of Full Load at Room Temperature and 48 Vdc Input; 0.1A/uS, Load at Room Temperature and 48 Vdc Input; 0.1A/uS, C = 470µF C = 470µF o,ext o,ext October 5, 2015 ©2012 General Electric Company. All rights reserved. Page 5 OUTPUT CURRENT OUTPUT VOLTAGE OUTPUT VOLTAGE EFFICIENCY (%) IO (A) (5A/div) VO(V) (200mV/div) VO (V) (50mV/div) INPUT VOLTAGE OUTPUT VOLTAGE On/Off VOLTAGE OUTPUTVOLTAGE OUTPUT CURRENT OUTPUT VOLTAGE V (V) (20V/div) V (V) (10V/div) V (V) (2V/div) V (V) (10V/div) in O ON/OFF O I (A) (5A/div) V (V) (200mV/div) O O Data Sheet GE JNW350R Power Modules; DC-DC Converters 36 – 75 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 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 The JNW350R power module requires a minimum output simulated source inductance (LTEST) of 12 µH. Capacitor CS capacitance of 440µF Low ESR aluminum capacitor, Cout offsets possible battery impedance. Measure the current, as to ensure stable operation over the full range of load and shown above. line conditions, see Figure 8. If the ambient temperature Figure 7. Input Reflected Ripple Current Test Setup. 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 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 Note: Use a Cout (470 µF Low ESR aluminum or tantalum requirements of the end-use safety agency standard, i.e., capacitor typical), a 0.1 µF ceramic capacitor and a 10 µF UL60950-1, CSA C22.2 No. 60950-1-03, EN60950-1 and ceramic capacitor, and Scope measurement should be made VDE 0805:2001-12. using a BNC socket. Position the load between 51 mm and 76 mm (2 in. and 3 in.) from the module. For end products connected to –48V dc, or –60Vdc Figure 8. Output Ripple and Noise Test Setup. 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 Note: All measurements are taken at the module terminals. component failure and fault tests were performed When socketing, place Kelvin connections at module terminals in the power converters. to avoid measurement errors due to socket contact resistance.  One pole of the input and one pole of the output are to be grounded, or both circuits are to be kept Figure 9. Output Voltage and Efficiency Test Setup. floating, to maintain the output voltage to ground voltage within ELV or SELV limits. However, SELV will not be maintained if V (+) and V (+) are grounded I O simultaneously. October 5, 2015 ©2012 General Electric Company. All rights reserved. Page 6 Data Sheet GE JNW350R Power Modules; DC-DC Converters 36 – 75 Vdc Input; 28Vdc Output; 350W 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. Figure 10. Circuit configuration for using Remote On/Off Implementation.  Another SELV reliability test is conducted on the condition, the module is equipped with internal current whole system, as required by the safety agencies, limiting protection circuitry, and can endure over-current on the combination of supply source and the transient overloads depending upon the duration and subject module to verify that under a single fault, amplitude of the overload. An internal buffer measures hazardous voltages do not appear at the module’s the relative product of the duration and amplitude of the output. overload and allows operation until a limit threshold is reached. For lower amplitude overloads, the module will operate without shutdown for a longer transient All flammable materials used in the manufacturing of overload. If the overload amplitude is larger, the module these modules are rated 94V-0, or tested to the UL60950 will reach shutdown in a shorter period of time. A.2 for reduced thickness. A latching shutdown option is standard. If over-current The input to these units is to be provided with a persists for beyond the overload buffer, the module will maximum 20 A fast-acting or time-delay fuse in the shut down and remain off until the module is reset by unearthed lead. either cycling the input power or by toggling the on/off pin for one second. Feature Description An OCP auto-restart option (code = 3 or 4, see Table 2) is also available in a case where an auto recovery is Remote On/Off required. Once the module has shutdown, after a period of several 100’s of milliseconds, the module will restart. If Two remote on/off options are available. Positive logic the output overload condition still exists when the turns the module on during a logic high voltage on the module restarts, it will shut down again. This operation ON/OFF pin, and off during a logic low. Negative logic will continue indefinitely, until the over-current condition remote On/Off, device code suffix “1”, turns the module is corrected. off during a logic high and on during a logic low. To turn the power module on and off, the user must Over-Voltage Protection (OVP) supply a switch (open collector or equivalent) to control The output over-voltage protection consists of circuitry the voltage (V ) between the ON/OFF terminal and the on/off that monitors the voltage on the output terminals. If the V (-) terminal (see Figure 10). Logic low is IN voltage on the output terminals exceeds the over 0V ≤ Von/off ≤ 1.2V. The maximum Ion/off during a logic low voltage protection threshold, then the module will is 1mA, the switch should be maintain a logic low level shutdown and latch off. The over-voltage latch is reset whilst sinking this current. by either cycling the input power for one second or by During a logic high, the typical maximum Von/off toggling the on/off signal for one second. The protection generated by the module is 5V, and the maximum mechanism is such that the unit can continue in this allowable leakage current at V = 5V is 50μA. on/off condition until the fault is cleared. If not using the remote on/off feature: An OVP auto-restart option (code = 3, see Table 2) is also For positive logic, leave the ON/OFF pin open. available in a case where an auto recovery is required. Once the module has shutdown, after a period of several For negative logic, short the ON/OFF pin to V (-). IN 100’s of milliseconds, the module will restart. If the output overload condition still exists when the module Over-Current Protection (OCP) restarts, it will shut down again. This operation will To provide protection in a fault output overload continue indefinitely, until the over-current condition is corrected. October 5, 2015 ©2012 General Electric Company. All rights reserved. Page 7 Data Sheet GE JNW350R Power Modules; DC-DC Converters 36 – 75 Vdc Input; 28Vdc Output; 350W Output 33 Feature Description (continued) 31 Remote sense 29 Upper Trim Limit 27 Remote sense minimizes the effects of distribution losses 25 by regulating the voltage at the remote-sense 23 connection (see Figure 11). For No Trim or Trim down 21 application, the voltage between the remote-sense pin Lower Trim Limit 19 and the output terminal must not exceed the output 17 voltage sense range given in the Feature Specifications 15 table i.e.: SENSE(+) – V (+) ≤ 2% of V . o o,nom 35 40 45 50 55 60 65 70 75 The voltage between the V (+) and V (-) terminals must Vin (V) o o not exceed the minimum output over-voltage shut-down Figure 12. Output voltage trim limits vs. Input Voltage. value indicated in the Feature Specifications table. This Modules without the –T Option limit includes any increase in voltage due to remote- sense compensation and output voltage set-point Trim Down – Decrease Output Voltage adjustment (trim). See Figure 11. Do not connect SENSE(-) Trimming down is accomplished by connecting an to the Vo(-) or Rload(-) as there is a 0Ω connection internal external resistor between the TRIM pin and the SENSE(-) to the module. If not using the remote-sense feature to pin. With an external resistor (R ) between the TRIM adj-down regulate the output at the point of load, then connect and SENSE(-) pins, the output voltage set point (Vo,adj) SENSE(+) to V (+). o decreases (see Figure 13). The following equation Although the output voltage can be increased by both determines the required external-resistor value to obtain the remote sense and by the trim, the maximum a percentage output voltage change of %. increase for the output voltage is not the sum of both. For output voltages: 28V The maximum increase is the larger of either the remote sense or the trim. The amount of power delivered by the 100  module is defined as the voltage at the output terminals Radj down 2 k   multiplied by the output current. When using remote %   sense and trim: the output voltage of the module can be Where, increased, which at the same output current would increase the power output of the module. Care should be Vo, nomVdesired % 100 taken to ensure that the maximum output power of the Vo, nom module remains at or below the maximum rated power. 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. The trim resistor Figure 13. Circuit Configuration to Decrease Output should be positioned close to the module. Certain Voltage, Standard JNW350R. restrictions apply to the input voltage lower limit when trimming the output voltage to the maximum. See Figure Trim Up – Increase Output Voltage 12 for the allowed input to output range when using Trimming up is accomplished by connecting external trim. If not using the trim down feature, leave the TRIM resistor between the SENSE(+) pin and TRIM pin.With an pin open. (Radj-up) connected between the external resistor SENSE(+) and TRIM pins, the output voltage set point (Vo,adj) increases (see Figure 14). October 5, 2015 ©2012 General Electric Company. All rights reserved. Page 8 Vout (V) Data Sheet GE JNW350R Power Modules; DC-DC Converters 36 – 75 Vdc Input; 28Vdc Output; 350W Output Trim Down – Decrease Output Voltage Feature Description (continued) With an external resistor (R ) between the TRIM and adj-down The following equation determines the required external- SENSE(+) pins, the output voltage set point (V ) o,adj resistor value to obtain a percentage output voltage decreases (see Figure 15). The following equation change of %. determines the required external-resistor value to obtain For output voltages: 28V a percentage output voltage change of %. V  (100 %)  (100  (2%) For output voltages: 28V O,nom Radj  up  k   1.225% %   10631.45   Radj down 111.2k %   Where, Where, VdesiredVo, nom % 100 Vo, nomVdesired Vo, nom % 100 Vo, nom V = Desired output voltage set point (V). desired Vdesired = Desired output voltage set point (V). Figure 15. Circuit Configuration to Decrease Output Figure 14. Circuit Configuration to Increase Output Voltage, JNW350R-T option. Voltage, Standard JNW350R. Trim Up – Increase Output Voltage Examples: With an external resistor (Radj-up) connected between the To trim down the output of a nominal 28V module to SENSE(-) and TRIM pins, the output voltage set point 16.8V (V ) increases (see Figure 16). o,adj 28V16.8V The following equation determines the required external- % 100 28V resistor value to obtain a percentage output voltage change of %. ∆% = 40 For output voltages: 28V 100   Radj down 2k 488.5 40   Radj up k   Radj - down = 0.5 k %   Where, To trim up the output of a nominal 28V module to 30.8V VdesiredVo, nom 30.8V28V % 100 % 100 Vo, nom 28V Vdesired = Desired output voltage set point (V). ∆% = 10 28(10010) (100(210)   R   k adjup   1.22510 10   R = 239.4 kΩ adj - up Modules with the –T Option October 5, 2015 ©2012 General Electric Company. All rights reserved. Page 9 Data Sheet GE JNW350R Power Modules; DC-DC Converters 36 – 75 Vdc Input; 28Vdc Output; 350W Output Feature Description (continued) Figure 17. Circuit Configuration to Actively Adjust the Output Voltage. Figure 16. Circuit Configuration to Increase Output Voltage, JNW350Rx-T option. Tunable Loop™ Examples: The JNW350Rx-T modules have a new feature that To trim down the output of a nominal 28V JNW350-T optimizes transient response of the module called module to 16.8V Tunable Loop™. 28V16.8V % 100 External capacitors are usually added to the output of 28V the module for two reasons: to reduce output ripple and ∆% = 40 noise and to reduce output voltage deviations from the steady-state value in the presence of dynamic load 10631.45   current changes. Adding external capacitance however Radj down 111.2 k   40 affects the voltage control loop of the module, typically   causing the loop to slow down with sluggish response. Radj - down = 154.5 k Larger values of external capacitance could also cause the module to become unstable. To trim up the output of a nominal 28V JNW350-T TM module to 30.8V The Tunable Loop allows the user to externally adjust the voltage control loop to match the filter network 30.8V28V connected to the output of the module. The Tunable % 100 TM Loop is implemented by connecting a series R-C 28V between the SENSE(+) and TRIM pins of the module, as ∆% = 10 shown in Fig. 48. This R-C allows the user to externally 488.5 adjust the voltage loop feedback compensation of the Radj up k   module. 10   R = 48.8 kΩ adj - up Active Voltage Programming For both the JNW350Rx and JNW350Rx-T, a Digital- Analog 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 R will be G 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 18. Circuit diagram showing connection of RTUNE and CTUNE to tune the control loop of the module. Recommended values of R and C for different TUNE TUNE output capacitor combinations are given in Tables 1 and 2. Table 1 shows the recommended values of R and TUNE C for different values of ceramic output capacitors TUNE up to 8000F that might be needed for an application to October 5, 2015 ©2012 General Electric Company. All rights reserved. Page 10 Data Sheet GE JNW350R Power Modules; DC-DC Converters 36 – 75 Vdc Input; 28Vdc Output; 350W Output meet output ripple and noise requirements. Selecting For reliable operation this temperature should not R and C according to Table 2 will ensure stable exceed 100ºC at T for cold plate applications or TUNE TUNE REF 1 operation of the module exceed 112ºC at T for applications using forced REF 2 In applications with tight output voltage limits in the convection airflow. The output power of the module presence of dynamic current loading, additional output should not exceed the rated power for the module as capacitance will be required. Table 2 lists recommended listed in the ordering Information table. Although the values of RTUNE and CTUNE in order to meet 2% output maximum TREF temperature of the power modules is voltage deviation limits for some common output discussed above, you can limit this temperature to a voltages in the presence of a 6A to 12A step change lower value for extremely high reliability. (50% of full load), with an input voltage of 48V. Table 1. General recommended values of of R and TUNE C for V =28V and various external ceramic TUNE out capacitor combinations. Cout(µF) 1100 2200 4400 6600 8000 R (k TUNE 348 200 51.1 36.5 40.2 CTUNE(pF) 1500 6800 10,000 15,000 15,000 Table 2. Recommended values of R and C to TUNE TUNE obtain transient deviation of 2% of Vout for a 6A step load with Vin=48V. Vo 32V 28V 25V 22V 19V 16.8V Co(uF) 880 880 1100 1320 1320 1540 RTUNE(k 1000 402 348 221 84.5 61.9 C (pF) 820 1500 1500 2200 3300 6800 TUNE V(mV) 530 500 530 420 370 317 Figure 19. Case (TREF ) Temperature Measurement Please contact your GE technical representative to Location (top view). obtain more details of this feature as well as for guidelines on how to select the right value of external R- Thermal Derating C to tune the module for best transient performance and Thermal derating is presented for two different stable operation for other output capacitance values. applications: 1) Figure 20, the JNW350R module is thermally coupled to a cold plate inside a sealed Over Temperature Protection clamshell chassis, without any internal air circulation; and 2) Figure 21 and 22, the JNW350R module is The JNW350R module provides with non-latching over mounted in a traditional open chassis or cards with temperature protection. A temperature sensor monitors forced air flow. In application 1, the module is cooled the operating temperature of the converter. If the entirely by conduction of heat from the module primarily reference temperature exceeds a threshold of 110 ºC through the top surface to a coldplate, with some (typical) at the center of the baseplate, the converter will conduction through the module’s pins to the power shut down and disable the output. When the baseplate layers in the system board. For application 2, the module temperature has decreased by approximately 20 ºC the is cooled by heat removal into a forced airflow that converter will automatically restart. passes through the interior of the module and over the top baseplate and/or attached heatsink. 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 (T ) occurs at the position indicated in Figure 15. REF 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. October 5, 2015 ©2012 General Electric Company. All rights reserved. Page 11 Data Sheet GE JNW350R Power Modules; DC-DC Converters 36 – 75 Vdc Input; 28Vdc Output; 350W Output Thermal Considerations (continued) Layout Considerations The JNW350R power module series are aluminum base 375 board packaged style, as such; component clearance between the bottom of the power module and the 350 mounting (Host) board is limited. Avoid placing copper areas on the outer layer directly underneath the power 325 module. 300 Post Solder Cleaning and Drying Considerations 275 Post solder cleaning is usually the final circuit-board assembly process prior to electrical board testing. The 250 result of inadequate cleaning and drying can affect both 20 30 40 50 60 70 80 90 100 the reliability of a power module and the testability of Baseplate Temperature (C) the finished circuit-board assembly. For guidance on Figure 20. Output Power Derating for JNW350R in appropriate soldering, cleaning and drying procedures, refer to GE Board Mounted Power Modules: Soldering and Conduction cooling (cold plate) applications; Ta Cleaning Application Note. <70ºC in vicinity of module interior; VIN = VIN, NOM 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 3C/s is suggested. The wave preheat process should be such that the temperature of the power module board is kept below 210C. For Pb solder, the recommended pot temperature is 260C, while the Pb-free solder pot is 270C max. Not all RoHS- compliant through-hole products can be processed with Figure 21. Derating Output Current vs. local Ambient paste-through-hole Pb or Pb-free reflow process. If temperature and Airflow, No Heatsink, Vin=48V. additional information is needed, please consult with your GE representative for more details. Figure 22. Derating Output Current vs. local Ambient temperature and Airflow, 1” Heatsink, Vin=48V. October 5, 2015 ©2012 General Electric Company. All rights reserved. Page 12 Output Power (W) Data Sheet GE JNW350R Power Modules; DC-DC Converters 36 – 75 Vdc Input; 28Vdc Output; 350W Output EMC Considerations The filter circuit schematic and plots in Figure 23 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 Component Description C1 – C5 SMD Ceramic Capacitor: 1000nF/100V/X7R/1210 C6 SMD Ceramic Capacitor : 100nF/100V/X7R/1206 L1, L2 CM inductor-single phase: 473uH-14A-R5K-1*25.4*12.7mm C8 – C11 SMD Ceramic Capacitor: 0.22uF/630V/X7R/2220, meet 1kV endure voltage requirement. C7 Electrolytic capacitor: 470uF, 100V C12 Electrolytic capacitor: 470uF, 35V L3 CM inductor-single phase core: 17uH- R7K-25*15*12; winding: 5TS Figure 23. EMC Filter For further information on designing for EMC compliance, please refer to the FLTR100V20 data sheet (FDS01-077EPS). October 5, 2015 ©2012 General Electric Company. All rights reserved. Page 13 Data Sheet GE JNW350R Power Modules; DC-DC Converters 36 – 75 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 Description Pin Description Pin Description 1 Vin (+) 4 Vin (–) 7 Trim 2 On/Off 5 Vout (–) 8 Sense (+) 3 Baseplate 6 Sense (-) 9 Vout (+) October 5, 2015 ©2012 General Electric Company. All rights reserved. Page 14 Data Sheet GE JNW350R Power Modules; DC-DC Converters 36 – 75 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 ©2012 General Electric Company. All rights reserved. Page 15 Data Sheet GE JNW350R Power Modules; DC-DC Converters 36 – 75 Vdc Input; 28Vdc Output; 350W Output Ordering Information Table 1. Device Code Output Output Connector Input Voltage Efficiency Product codes Comcodes Voltage Current Type 48V (36-75Vdc) 28V 12.5A 92% Through hole JNW350R631-18Z CC109161931 48V (36-75Vdc) 28V 12.5A 92% Through hole JNW350R41-18TZ CC109150083 48V (36-75Vdc) 28V 12.5A 92% Through hole JNW350R641 CC109147476 48V (36-75Vdc) 28V 12.5A 92% Through hole JNW350R641Z CC109148623 48V (36-75Vdc) 28V 12.5A 92% Through hole JNW350R641-18 CC109147451 48V (36-75Vdc) 28V 12.5A 92% Through hole JNW350R641-TZ CC109149836 48V (36-75Vdc) 28V 12.5A 92% Through hole JNW350R64-18Z CC109161361 48V (36-75Vdc) 28V 12.5A 92% Through hole JNW350R641-18Z CC109149712 48V (36-75Vdc) 28V 12.5A 92% Through hole JNW350R841-18TZ CC109153672 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 ©2012 General Electric Company. All International rights reserved. Version 1.63