Data Sheet GE KNW013/020-88 Series Power Modules; DC-DC Converters 36 – 75V Input; 3.3 to 5.0V Output; 13 to 20A Output Current dc dc Features RoHS Compliant  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)  Delivers up to 20A output current 5V(13A), 3.3V(20A)  High efficiency – 91% at 3.3V full load  Small size and low profile: 33.0 mm x 22.9 mm x 10.2 mm Applications (1.30 in x 0.9 in x 0.40 in)  Distributed power architectures  Industry standard DOSA footprint  Wireless networks  -20% to +10% output voltage adjustment trim  Access and optical networking equipment including  Remote on/off Power over Ethernet (PoE)  Remote sense  Enterprise networks  No reverse current during output shutdown  Latest generation IC’s (DSP, FPGA, ASIC) and  Over temperature protection (auto-restart) Microprocessor powered applications  Output overcurrent/overvoltage protection (latching)  Wide operating temperature range (-40°C to 85°C) Options  2250 Vdc Isolation tested in compliance with IEEE ¤  Negative Remote On/Off logic 802.3 PoE standards  Surface Mount (Tape and Reel, -SR Suffix)  Meets the voltage isolation requirements for ETSI 300-132-2 and complies with and is licensed for  Over current /Over voltage protections (auto-restart) Basic Insulation rating per EN60950-1  Shorter lead trim †  UL*Recognized to UL60950-1, CAN/CSA C22.2 ‡ No.60950-1, and EN60950-1(VDE 0805-1) Licensed §  CE mark meets 2006/95/EC directive  ISO** 9001 and ISO 14001 certified manufacturing facilities Description The KNW013/020-88 (Sixteenth-brick) series power modules are isolated dc-dc converters that operate over a wide input voltage range of 36 to 75Vdc and provide a single precisely regulated output. The output is fully isolated from the input, allowing versatile polarity configurations and grounding connections. The modules exhibit high efficiency, typical efficiency of 91% for 3.3V/20A. These open frame modules are available either in surface-mount (-SR) or in through-hole (TH) form. October 5, 2015 ©2012 General Electric Company. All rights reserved. Data Sheet GE KNW013/020-88 Series Power Modules; DC-DC Converters 2A Digital 36 – 75Vdc Input; 3.3 to 5.0Vdc Output; 13 to 20A Output Current 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 Operating Input Voltage Continuous All V -0.3 80 Vdc IN Transient (100 ms) All V -0.3 100 Vdc IN,trans Operating Ambient Temperature All T -40 85 °C A (see Thermal Considerations section) Storage Temperature All Tstg -55 125 °C   I/O Isolation voltage (100% Factory Hi-Pot tested) All 2250 Vdc 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 VIN 36 48 75 Vdc Maximum Input Current Adc 1.7 2.4 All IIN,max (V = V to V , I =I ) IN IN, min IN, max O O, max Input No Load Current All I 45 mA IN,No load (V = V , I = 0, module enabled) IN IN, nom O Input Stand-by Current mA All IIN,stand-by 6 8 (VIN = VIN, nom, module disabled) 2 2 Inrush Transient All It 0.1 A s Input Reflected Ripple Current, peak-to-peak (5Hz to 20MHz, 1μH source impedance; V to V All 30 mA IN, min IN, p-p I = I ; See Test configuration section) max, O Omax Input Ripple Rejection (120Hz) All 60 dB EMC, EN55022 See EMC Considerations section 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 an integrated part of sophisticated power architectures. To preserve maximum flexibility, internal fusing is not included, however, to achieve maximum safety and system protection, always use an input line fuse. The safety agencies require a time-delay fuse with a maximum rating of 5 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 KNW013/020-88 Series Power Modules; DC-DC Converters 36 – 75Vdc Input; 3.3 to 5.0Vdc Output; 13 to 20A Output Current Electrical Specifications (continued) Parameter Device Symbol Min Typ Max Unit Output Voltage Set-point 5.0V VO, set 4.93 5.0 5.07 Vdc (V =V , I =I , T=25°C) 3.3V V 3.25 3.3 3.35 V IN IN, min O O, max A O, set dc Output Voltage All V -3.0 +3.0 % V O O, set (Over all operating input voltage, resistive load, and temperature conditions until end of life) Adjustment Range All VO, adj -20.0 +10.0 % VO, set Selected by an external resistor Output Regulation Line (V =V to V) All 0.1 % V IN IN, min IN, max   O, set Load (I =I to I) All 0.1 % V O O, min O, max   O, set Temperature (Tref=TA, min to TA, max) All   1.0 % VO, set Output Ripple and Noise on nominal output (VIN=VIN, nom ,IO= IO, max , TA=TA, min to TA, max) RMS (5Hz to 20MHz bandwidth)  25 30 mVrms All Peak-to-Peak (5Hz to 20MHz bandwidth) 75 100 mV  pk-pk External Capacitance 5.0V C 0 10,000 μF O, max  3.3V C 20,000 μF O, max Rated Output Current 5.0V I 0 13 A O, Rated  dc 3.3V I 0 20 A O, Rated  dc Output Current Limit Inception (Hiccup Mode ) IO, lim All 115 120 130 %IO, Rated (V = 90% of V ) O O, set Output Short-Circuit Current %IOmax All I 20 O, s/c   Arms (V≤250mV) ( Hiccup Mode ) O Efficiency 5.0V η 91.0 % V = V ; T =25°C; I =I ; V = V 3.3V η 91.0 % IN IN, nom A O O, max O O,set Switching Frequency All fsw  400  kHz Dynamic Load Response (dI /dt=0.1A/s; V = V ; T =25°C) O IN IN, nom A Load Change from I = 50% to 75% or 25% to 50% O of IO,max; Peak Deviation All V 4 % V pk   O, set Settling Time (V <10% peak deviation) O All t 200 s   s (dI /dt=1.0A/s; V = V ; T =25°C) O IN IN, nom A Load Change from IO= 50% to 75% or 25% to 50% of I ; O,max Peak Deviation All V 5 % V pk   O, set Settling Time (VO<10% peak deviation) All t 200 s   s Isolation Specifications Parameter Device Symbol Min Typ Max Unit Isolation Capacitance All Ciso  1000  pF Isolation Resistance All R 10   MΩ iso I/O Isolation Voltage All All 2250 V   dc October 5, 2015 ©2012 General Electric Company. All rights reserved. Page 3 Data Sheet GE KNW013/020-88 Series Power Modules; DC-DC Converters 2A Digital 36 – 75Vdc Input; 3.3 to 5.0Vdc Output; 13 to 20A Output Current General Specifications Parameter Device Symbol Min Typ Max Unit Calculated Reliability Based upon Telcordia SR-332 5.0V MTBF 4,114,000 Hours Issue 2: Method I, Case 3, (IO=80%IO, max, TA=40°C, 9 5.0V FIT 243.1 10 /Hours Airflow = 200 lfm), 90% confidence 3.3V MTBF 4,589,027 Hours 9 3.3V FIT 217.9 10 /Hours Powered Random Vibration (V =V , I =I , IN IN, min O O, max All 90 Minutes T =25°C, 0 to 5000Hz, 10Grms) A g Weight All  15.6 (0.55)  (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 Remote On/Off Signal Interface (VIN=VIN, min to VIN, max ; open collector or equivalent, signal referenced to Vterminal) 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 Ion/off   1.0 mA Logic Low - On/Off Voltage All V -0.7 1.2 V on/off  Logic High Voltage – (Typ = Open Collector) All Von/off  5 V Logic High maximum allowable leakage current All Ion/off   10 μA Turn-On Delay and Rise Times o (IO=IO, max , VIN=VIN, nom, TA = 25 C) Case 1: On/Off input is set to Logic Low (Module ON) and then input power is applied (delay from All Tdelay — 13 20 msec instant at which VIN = VIN, min until VO=10% of VO,set) Case 2: Input power is applied for at least 1 second and then the On/Off input is set from OFF to ON (T delay All T — 30 35 msec delay = from instant at which V =V until V = 10% of V IN IN, min O O, set) 5.0 Trise — 20 25 msec Output voltage Rise time (time for Vo to rise from 10% of VO,set to 90% of VO, set) 3.3 Trise — 6 10 msec Output voltage overshoot – Startup — 3 % V O, set o IO= IO, max; VIN=VIN, min to VIN, max, TA = 25 C Remote Sense Range All +10 % V O, set Output Overvoltage Protection 5.0V VO, limit 6.1  7.0 Vdc 3.3V V 4.0 4.6 V O, limit  dc Input Undervoltage Lockout Turn-on Threshold All V 32.5 34.0 35.8 V uv/on dc Turn-off Threshold All Vuv/off 30.0 31.0 33.0 Vdc Hysterisis All V 2 V hyst   dc October 5, 2015 ©2012 General Electric Company. All rights reserved. Page 4 Data Sheet GE KNW013/020-88 Series Power Modules; DC-DC Converters 36 – 75Vdc Input; 3.3 to 5.0Vdc Output; 13 to 20A Output Current Characteristic Curves o The following figures provide typical characteristics for the KNW013A0Axx-88 (5V, 13A) at 25 C. The figures are identical for either positive or negative remote On/Off logic. 95 14 12 90 NC 10 0.5 m /s 85 8 Vin=75V 100 LFM 1.0 m /s Vin=48V 6 80 200 LFM 4 2.0 m /s Vin=36V 400 LFM 75 2 0 70 20 30 40 50 60 70 80 90 03 69 12 15 O OUTPUT CURRENT, IO (A) AMBIENT TEMPERATURE, TA C Figure 1. Converter Efficiency versus Output Current. Figure 4. Derating Output Current versus Local Ambient Temperature and Airflow. TIME, t (10ms/div) TIME, t (1s/div) Figure 2. Typical output ripple and noise (VIN = VIN,NOM, Io = Figure 5. Typical Start-up Using Remote On/Off, Io,max). negative logic version shown (VIN = VIN,NOM, Io = Io,max). TIME, t (5ms/div) TIME, t (200 s /div) Figure 3. Transient Response to Dynamic Load Change, Figure 6. Typical Start-up Using Input Voltage (VIN = 0.1A/µS, from 75% to 50% to 75% of full load. VIN,NOM, Io = Io,max). October 5, 2015 ©2012 General Electric Company. All rights reserved. Page 5 OUTPUT VOLTAGE EFFICIENCY,  (%) OUTPUT CURRENT OUTPUT VOLTAGE V (V) (20mV/div) O Io (A) (10A/div) V (V) (200mV/div) O OUTPUT VOLTAGE INPUT VOLTAGE OUTPUT VOLTAGE On/Off VOLTAGE OUTPUT CURRENT, Io (A) V (V) (2V/div) V (V) (20V/div) V (V) (2V/div) V (V) (2V/div) O IN O On/off Data Sheet GE KNW013/020-88 Series Power Modules; DC-DC Converters 2A Digital 36 – 75Vdc Input; 3.3 to 5.0Vdc Output; 13 to 20A Output Current Characteristic Curves O The following figures provide typical characteristics for the KNW020A0Fxx-88 (3.3V, 20A) at 25 C. The figures are identical for either positive or negative remote On/Off logic. 95 20 90 15 NC 0.5 m /s 85 Vin=75V 100 LFM 10 Vin=48 Vin=36V 80 1.0 m /s 200 LFM 5 2.0 m /s 75 400 LFM 0 70 0 5 10 15 20 20 30 40 50 60 70 80 90 O OUTPUT CURRENT, IO (A) AMBIENT TEMPERATURE, TA C Figure 7. Converter Efficiency versus Output Current. Figure 10. Derating Output Current versus Local Ambient Temperature and Airflow. TIME, t (1s/div) TIME, t (5ms/div) Figure 8. Typical output ripple and noise (VIN = VIN,NOM, Io = Figure 11. Typical Start-up Using Remote On/Off, negative o,max). logic version shown (VIN = VIN,NOM, Io = Io,max). I TIME, t (200 s /div) TIME, t (5ms/div) Figure 9. Transient Response to Dynamic Load Change, Figure 12. Typical Start-up Using Input Voltage (VIN = 0.1A/µS, from 75% to 50% to 75% of full load. VIN,NOM, Io = Io,max). October 5, 2015 ©2012 General Electric Company. All rights reserved. Page 6 OUTPUT CURRENT OUTPUT VOLTAGE OUTPUT VOLTAGE Io (A) (5A/div) VO (V) (100mV/div) EFFICIENCY,  (%) VO (V) (20mV/div) OUTPUT VOLTAGE INPUT VOLTAGE OUTPUT VOLTAGE On/Off VOLTAGE OUTPUT CURRENT, Io (A) V (V) (1V/div) V (V) (20V/div) V (V) (1V/div) V (V) (2V/div) O IN O On/off Data Sheet GE KNW013/020-88 Series Power Modules; DC-DC Converters 36 – 75Vdc Input; 3.3 to 5.0Vdc Output; 13 to 20A Output Current Test Configurations Design Considerations Input Filtering CURRENT PROBE TO OSCILLOSCOPE The power module should be connected to a low ac-impedance source. Highly inductive source L TEST Vin+ impedance can affect the stability of the power module. 12μH For the test configuration in Figure 13, a 33μF electrolytic capacitor (ESR<0.7 at 100kHz), mounted close to the C 220μF S 33μF power module helps ensure the stability of the unit. E.S.R.<0.1 Consult the factory for further application guidelines. @ 20°C 100kHz Safety Considerations Vin- For safety-agency approval of the system in which the NOTE: Measure input reflected ripple current with a simulated power module is used, the power module must be source inductance (L ) of 12μH. Capacitor C offsets TEST S installed in compliance with the spacing and separation possible battery impedance. Measure current as shown above. requirements of the end-use safety agency standard, i.e UL60950-1, CSA C22.2 No.60950-1, and VDE0805- Figure 13. Input Reflected Ripple Current Test Setup. 1(IEC60950-1). COPPER STRIP If the input source is non-SELV (ELV or a hazardous voltage greater than 60 Vdc and less than or equal to V O (+) RESISTIVE LOAD 75Vdc), for the module’s output to be considered as SCOPE meeting the requirements for safety extra-low voltage (SELV), all of the following must be true: V O (– ) 0.1uF 10uF  The input source is to be provided with reinforced insulation from any other hazardous voltages, GROUND PLANE including the ac mains. NOTE: All voltage measurements to be taken at the module terminals, as shown above. If sockets are used then  One VIN pin and one VOUT pin are to be grounded, or Kelvin connections are required at the module terminals both the input and output pins are to be kept to avoid measurement errors due to socket contact resistance. floating.  The input pins of the module are not operator Figure 14. Output Ripple and Noise Test Setup. accessible.  Another SELV reliability test is conducted on the whole system (combination of supply source and subject module), as required by the safety agencies, Rdistribution Rcontact Rcontact Rdistribution to verify that under a single fault, hazardous Vin+ Vout+ voltages do not appear at the module’s output. Note: Do not ground either of the input pins of the R LOAD V VO IN module without grounding one of the output pins. This may allow a non-SELV voltage to appear between the output pins and ground. R R R R distribution contact contact distribution Vin- Vout- The power module has extra-low voltage (ELV) outputs when all inputs are ELV. NOTE: All voltage measurements to be taken at the module All flammable materials used in the manufacturing of terminals, as shown above. If sockets are used then Kelvin connections are required at the module terminals these modules are rated 94V-0, or tested to the UL60950 to avoid measurement errors due to socket contact A.2 for reduced thickness. resistance. For input voltages exceeding –60 Vdc but less than or Figure 15. Output Voltage and Efficiency Test Setup. equal to –75 Vdc, these converters have been evaluated V . I O O to the applicable requirements of BASIC INSULATION Efficiency = x 100 %  between secondary DC MAINS DISTRIBUTION input V . I IN IN (classified as TNV-2 in Europe) and unearthed SELV outputs. The input to these units is to be provided with a maximum 5 A time-delay fuse in the ungrounded lead. October 5, 2015 ©2012 General Electric Company. All rights reserved. Page 7 BATTERY Data Sheet GE KNW013/020-88 Series Power Modules; DC-DC Converters 2A Digital 36 – 75Vdc Input; 3.3 to 5.0Vdc Output; 13 to 20A Output Current that the maximum output power of the module remains Feature Description at or below the maximum rated power (Maximum rated Remote On/Off power = V x I ). o,set o,max Two remote on/off options are available. Positive logic turns the module on during a logic high voltage on the SENSE(+) ON/OFF pin, and off during a logic low. Negative logic SENSE(–) remote On/Off, device code suffix “1”, turns the module VI(+) VO(+) off during a logic high and on during a logic low. IO SUPPL Y LOAD II VI(-) VO(–) CONTACT CONT ACT AND Vin+ RESIST ANCE DISTRIBUTION LOSSE Vout+ Figure 17. Circuit Configuration for remote sense. I on/off ON/OFF TRIM Input Undervoltage Lockout V on/off At input voltages below the input undervoltage lockout limit, the module operation is disabled. The module will only begin to operate once the input voltage is raised Vout- Vin- above the undervoltage lockout turn-on threshold, V . UV/ON Once operating, the module will continue to operate until the input voltage is taken below the undervoltage turn- Figure 16. Remote On/Off Implementation. . off threshold, VUV/OFF Overtemperature Protection To turn the power module on and off, the user must supply a switch (open collector or equivalent) to control To provide protection under certain fault conditions, the the voltage (V ) between the ON/OFF terminal and the on/off unit is equipped with a thermal shutdown circuit. The V (-) terminal (see Figure 16). Logic low is IN unit will shutdown if the thermal reference point Tref 0V ≤ Von/off ≤ 1.2V. The maximum Ion/off during a logic low o (Figure 19), exceeds 128-133 C (typical) depending on TA is 1mA; the switch should be maintaining a logic low and airflow, but the thermal shutdown is not intended as level while sinking this current. a guarantee that the unit will survive temperatures During a logic high, the typical maximum V beyond its rating. The module will automatically restart on/off generated by the module is 15V, and the maximum upon cool-down to a safe temperature. allowable leakage current at V = 5V is 1μA. on/off Output Overvoltage Protection If not using the remote on/off feature: The output over voltage protection scheme of the For positive logic, leave the ON/OFF pin open. modules has an independent over voltage loop to For negative logic, short the ON/OFF pin to VIN(-). prevent single point of failure. This protection feature Remote Sense latches in the event of over voltage across the output. Cycling the on/off pin or input voltage resets the latching Remote sense minimizes the effects of distribution losses protection feature. If the auto-restart option (4) is by regulating the voltage at the remote-sense ordered, the module will automatically restart upon an connections (See Figure 17). The voltage between the internally programmed time elapsing. remote-sense pins and the output terminals must not exceed the output voltage sense range given in the Overcurrent Protection Feature Specifications table: To provide protection in a fault (output overload) [VO(+) – VO(–)] – [SENSE(+) – SENSE(–)]  10% VO,set condition, the unit is equipped with internal Although the output voltage can be increased by both current-limiting circuitry and can endure current limiting the remote sense and by the trim, the maximum continuously. At the point of current-limit inception, the increase for the output voltage is not the sum of both. unit enters hiccup mode. If the unit is not configured with The maximum increase is the larger of either the remote auto–restart, then it will latch off following the over sense or the trim. current condition. The module can be restarted by cycling the dc input power for at least one second, or by The amount of power delivered by the module is defined toggling the remote on/off signal for as the voltage at the output terminals multiplied by the at least one second. If the unit is configured with 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 October 5, 2015 ©2012 General Electric Company. All rights reserved. Page 8 Data Sheet GE KNW013/020-88 Series Power Modules; DC-DC Converters 36 – 75Vdc Input; 3.3 to 5.0Vdc Output; 13 to 20A Output Current 5.11V  (100%) Feature Descriptions (continued)  511  o,set R    10.22  trimup   1.225% % auto-restart option (4), it will remain in the hiccup mode   as long as the overcurrent condition exists; it operates V V  Where desired o ,set normally, once the output current is brought back into its    %  100   V specified range. The average output current during o ,set   hiccup is 10% I . O, max For example, to trim-up the output voltage of 5.0V module (KNW013A0A/A1-88) by 5% to 5.25V, R is trim-up Output Voltage Programming calculated is as follows: Trimming allows the output voltage set point to be increased or decreased. This is accomplished by  % 5 connecting an external resistor between the TRIM pin and either the VO(+) pin or the VO(-) pin.  5.11 5.0 (100 5) 511  R    10 .22  trimup   1.225 5 5   V (+) V (+) IN O R trim-up R  325 .6 trimup ON/OFF LOAD V TRIM O The voltage between the Vo(+) and Vo(–) terminals must not exceed the minimum output overvoltage protection R trim-down value shown in the Feature Specifications table. This limit includes any increase in voltage due to remote-sense V (-) V (-) IN O compensation and output voltage set-point adjustment trim. Although the output voltage can be increased by both Figure 18. Circuit Configuration to Trim Output the remote sense and by the trim, the maximum Voltage. increase for the output voltage is not the sum of both. Connecting an external resistor (R ) between the trim-down The maximum increase is the larger of either the remote TRIM pin and the Vo(-) (or Sense(-)) pin decreases the sense or the trim. The amount of power delivered by the output voltage set point. To maintain set point accuracy, module is defined as the voltage at the output terminals the trim resistor tolerance should be ±1.0%. multiplied by the output current. When using remote The following equation determines the required external sense and trim, the output voltage of the module can be resistor value to obtain a percentage output voltage increased, which at the same output current would change of ∆% increase the power output of the module. Care should be taken to ensure that the maximum output power of the  511  R   10 .22  module remains at or below the maximum rated power trimdown    %   (Maximum rated power = V x I ). o,set o,max   V V Where o,set desired   Thermal Considerations %  100   V o,set   The power modules operate in a variety of thermal For example, to trim-down the output voltage of 3.3V environments; however, sufficient cooling should be module (KNW020A0F/F1-88) by 8% to 3.036V, Rtrim-down is provided to help ensure reliable operation. calculated as follows: Considerations include ambient temperature, airflow, module power dissipation, and the need for increased % 8 reliability. A reduction in the operating temperature of the module will result in an increase in reliability. The 511   thermal data presented here is based on physical R  10.22 trimdown   8   measurements taken in a wind tunnel. The thermal reference points, Tref , used in the R  53 .6 x trimdown specifications are shown in Figure 19. For reliable operation, the temperature of both Tref points should o not exceed 125 C. ) between the Connecting an external resistor (Rtrim-up TRIM pin and the V (+) (or Sense (+)) pin increases the O output voltage set point. The following equations determine the required external resistor value to obtain a percentage output voltage change of ∆%: October 5, 2015 ©2012 General Electric Company. All rights reserved. Page 9 Data Sheet GE KNW013/020-88 Series Power Modules; DC-DC Converters 2A Digital 36 – 75Vdc Input; 3.3 to 5.0Vdc Output; 13 to 20A Output Current Thermal Considerations (continued) Figure 21. KNW020A0F-88 Quasi Peak Conducted Emissions with EN 55022 Class A limits, Figure 20 filter (VIN = VIN,NOM, Io = 0.80 Io,max). Layout Considerations Avoid placing copper areas on the outer layer of the application PCB directly underneath the power module in the keep out areas shown in the Recommended Pad Layout figures. Also avoid placing via interconnects underneath the power module in these keep out areas. Figure 19. Tref Temperature Measurement Location. x Please refer to the Application Note “Thermal Characterization Process For Open-Frame Board- Mounted Power Modules” for a detailed discussion of thermal aspects including maximum device temperatures. EMC Considerations The KNW series module shall also meet limits of EN55022 Class A with a recommended single stage filter, shown in Figure 20. Please contact your GE Sales Representative for further information. Figure 20. Single stage filter used for test results. October 5, 2015 ©2012 General Electric Company. All rights reserved. Page 10 Data Sheet GE KNW013/020-88 Series Power Modules; DC-DC Converters 36 – 75Vdc Input; 3.3 to 5.0Vdc Output; 13 to 20A Output Current In a conventional Tin/Lead (Sn/Pb) solder process peak Surface Mount Information o reflow temperatures are limited to less than 235 C. o Pick and Place Typically, the eutectic solder melts at 183 C, wets the land, and subsequently wicks the device connection. The KNW013/020-88 modules use an open frame Sufficient time must be allowed to fuse the plating on the construction and are designed for a fully automated connection to ensure a reliable solder joint. There are assembly process. The pick and place locations on the several types of SMT reflow technologies currently used module are the larger magnetic core or the transistor in the industry. These surface mount power modules package as shown in Figure 22. The modules are fitted can be reliably soldered using natural forced convection, with a label which meets all the requirements for IR (radiant infrared), or a combination of convection/IR. surface mount processing, as well as safety standards, For reliable soldering the solder reflow profile should be and is able to withstand reflow temperatures of up to established by accurately measuring the modules CP o 300 C. The label also carries product information such connector temperatures. as product code, serial number and the location of manufacture. 300 o Peak Temp 235 C 250 Cooling zo ne Heat zone 200 o -1 o -1 1-4 Cs max 4 Cs 150 Soak zo ne 10 0 T above 30-240s lim o 205 C 50 Preheat zo ne o -1 max 4 Cs 0 REFLOW TIME (S) Figure 23. Reflow Profile for Tin/Lead (Sn/Pb) process Figure 22. Pick and Place Locations. 240 Nozzle Recommendations 235 The module weight has been kept to a minimum by using open frame construction. Even so, these modules 230 have a relatively large mass when compared to 225 conventional SMT components. Variables such as nozzle size, tip style, vacuum pressure and placement speed 220 should be considered to optimize this process. The 215 recommended nozzle diameter for reliable operation is 210 5mm. Oblong or oval nozzles up to 11 x 5 mm may also be used within the space available. 205 200 Tin Lead Soldering 0 10 203040 5060 o Figure 24. Time Limit Curve Above 205 C for Tin/Lead The KNW013/020-88 power modules (both non-Z and –Z (Sn/Pb) process codes) can be soldered either in a conventional Tin/Lead (Sn/Pb) process. The non-Z version of the KNW013/020- 88 modules are RoHS compliant with the lead exception. Lead based solder paste is used in the soldering process during the manufacturing of these modules. These modules can only be soldered in conventional Tin/lead (Sn/Pb) process. It is recommended that the customer review data sheets in order to customize the solder reflow profile for each application board assembly. The following instructions must be observed when soldering these units. Failure to observe these instructions may result in the failure of or cause damage to the modules, and can adversely affect long-term reliability. October 5, 2015 ©2012 General Electric Company. All rights reserved. Page 11 MAX TEMP SOLDER (C) REFLOW TEMP (C) Data Sheet GE KNW013/020-88 Series Power Modules; DC-DC Converters 2A Digital 36 – 75Vdc Input; 3.3 to 5.0Vdc Output; 13 to 20A Output Current the finished circuit-board assembly. For guidance on Surface Mount Information (continued) appropriate soldering, cleaning and drying procedures, Lead Free Soldering refer to GE Board Mounted Power Modules: Soldering and Cleaning The –Z version of the KNW013/020-88 modules are lead- Application Note (AN04-001). free (Pb-free) and RoHS compliant, and are both forward and backward compatible in a Pb-free and a SnPb 300 soldering process. The non-Z version of the Per J-STD-020 Rev. C Peak Temp 260°C KNW013/020-88 modules are RoHS compliant with the 250 lead exception. Lead based solder paste is used in the soldering process during the manufacturing of these Cooling 200 Zone modules. These modules can only be soldered in * Min. Time Above 235°C 15 Seconds conventional Tin/lead (Sn/Pb) process. Failure to observe 150 Heating Zone *Time Above 217°C the instructions below may result in the failure of or 1°C/Second 60 Seconds cause damage to the modules and can adversely affect 100 long-term reliability. 50 Pb-free Reflow Profile 0 Power Systems will comply with J-STD-020 Rev. C Reflow Time (Seconds) (Moisture/Reflow Sensitivity Classification for Figure 25. Recommended linear reflow profile using Nonhermetic Solid State Surface Mount Devices) for both Sn/Ag/Cu solder. Pb-free solder profiles and MSL classification procedures. This standard provides a recommended forced-air- convection reflow profile based on the volume and thickness of the package (table 4-2). The suggested Pb- Through-Hole Lead-Free Soldering free solder paste is Sn/Ag/Cu (SAC). The recommended linear reflow profile using Sn/Ag/Cu solder is shown in Information Figure 25. The RoHS-compliant through-hole products use the SAC (Sn/Ag/Cu) Pb-free solder and RoHS-compliant MSL Rating components. They are designed to be processed The KNW013/020-88 modules have a MSL rating of 3. 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 Storage and Handling maximum preheat rate of 3C/s is suggested. The wave The recommended storage environment and handling preheat process should be such that the temperature of procedures for moisture-sensitive surface mount the power module board is kept below 210C. For Pb packages is detailed in J-STD-033 Rev. A (Handling, solder, the recommended pot temperature is 260C, and, Packing, Shipping and Use of Moisture/Reflow Sensitive for Pb-free solder, the recommended pot temperature is Surface Mount Devices). Moisture barrier bags (MBB) 270C max. Not all RoHS-compliant through-hole with desiccant are required for MSL ratings of 2 or products can be processed with paste-through-hole Pb greater. These sealed packages should not be broken or Pb-free reflow process. If additional information is until time of use. Once the original package is broken, needed, please consult with your GE representative for the floor life of the product at conditions of  30°C and more details. 60% relative humidity varies according to the MSL rating (see J-STD-033A). The shelf life for dry packed SMT packages will be a minimum of 12 months from the bag seal date, when stored at the following conditions: < 40° C, < 90% relative humidity. 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 October 5, 2015 ©2012 General Electric Company. All rights reserved. Page 12 Reflow Temp (°C) Data Sheet GE KNW013/020-88 Series Power Modules; DC-DC Converters 36 – 75Vdc Input; 3.3 to 5.0Vdc Output; 13 to 20A Output Current Mechanical Outline for Surface Mount 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 View Side View Bottom View PIN FUNCTION 1 VIN(+) 2 On/Off 3 VIN(-) 4 Vo(-) 5 Sense(-) 6 Trim 7 Sense(+) 8 Vo(+) October 5, 2015 ©2012 General Electric Company. All rights reserved. Page 13 Data Sheet GE KNW013/020-88 Series Power Modules; DC-DC Converters 2A Digital 36 – 75Vdc Input; 3.3 to 5.0Vdc Output; 13 to 20A Output Current 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 View Side View Bottom View PIN FUNCTION 1 VIN(+) 2 On/Off 3 VIN(-) 4 Vo(-) 5 Sense(-) 6 Trim 7 Sense(+) 8 Vo(+) October 5, 2015 ©2012 General Electric Company. All rights reserved. Page 14 Data Sheet GE KNW013/020-88 Series Power Modules; DC-DC Converters 36 – 75Vdc Input; 3.3 to 5.0Vdc Output; 13 to 20A Output Current Recommended Pad Layout Dimensions are in and millimeters [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.] SMT Recommended Pad Layout (Component Side View) TH Recommended Pad Layout (Component Side View) October 5, 2015 ©2012 General Electric Company. All rights reserved. Page 15 Data Sheet GE KNW013/020-88 Series Power Modules; DC-DC Converters 2A Digital 36 – 75Vdc Input; 3.3 to 5.0Vdc Output; 13 to 20A Output Current Packaging Details The Sixteenth-brick SMT versions are supplied in tape & reel as standard. Details of tape dimensions are shown below. Modules are shipped in quantities of 140 modules per reel. Tape Dimensions Dimensions are in millimeters. October 5, 2015 ©2012 General Electric Company. All rights reserved. Page 16 Data Sheet GE KNW013/020-88 Series Power Modules; DC-DC Converters 36 – 75Vdc Input; 3.3 to 5.0Vdc Output; 13 to 20A Output Current Ordering Information Table 1. Device Code Output Output Connector Product Codes Input Voltage On/Off Logic Comcode Voltage Current Type KNW013A0A4-88SRZ 48V (36-75Vdc) 5.0V 13A Positive Surface mount 150027817 KNW013A0A41-88SRZ 48V (36-75Vdc) 5.0V 13A Negative Surface mount 150027812 KNW013A0A41-88Z 48V (36-75Vdc) 5.0V 13A Negative Through hole 150027809 KNW013A0A641-88Z 48V (36-75Vdc) 5.0V 13A Negative Through hole 150027816 KNW013A0A841-88Z 48V (36-75Vdc) 5.0V 13A Negative Through hole 150027811 KNW020A0F1-88SRZ 48V (36-75Vdc) 3.3V 20A Negative Surface mount 150027818 KNW020A0F41-88SRZ 48V (36-75Vdc) 3.3V 20A Negative Surface mount 150027810 KNW020A0F41-88Z 48V (36-75Vdc) 3.3V 20A Negative Through hole 150027806 KNW020A0F641-88Z 48V (36-75Vdc) 3.3V 20A Negative Through hole 150027807 KNW020A0F841-88Z 48V (36-75Vdc) 3.3V 20A Negative Through hole 150027814 Table 2. Device Coding Scheme and 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 1.09