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Generation SiC MOSFET (TO-263-7L)

Half Bridge Evaluation Board

User’s Guide

Содержание TO-263-7L

Страница 1: ...4th Generation SiC MOSFET TO 263 7L Half Bridge Evaluation Board User s Guide...

Страница 2: ...nging your hand close to the board may result in discharge and lead to severe injury or death Therefore DO NOT touch the board with your bare hands or bring them too close to the board In addition as...

Страница 3: ...in The evaluation board provided here has only been subjected to functional testing under typical load conditions The design of this evaluation board is tested by ROHM only as described in the user gu...

Страница 4: ...nnector Assignments 5 3 2 LED Indications 6 3 3 Isolated Power Supply and setting the gate drive voltage 8 3 4 Setting the gate resistors 10 3 5 Test point locations 10 3 6 Device current measurement...

Страница 5: ...e discharged to a safe level Warning Ensure that you use only appropriate measurement equipment for the voltage levels pre sent on the board Ensure not to ground live parts through unsuitable measurem...

Страница 6: ...e used with this board will be introduced in a later section of this manual Figure 1 Evaluation board without heatsink left and with heatsink right With this board the following tests are possible 1 D...

Страница 7: ...rivers The other two are the isolated power supplies required to supply the HV side of the isolated gate drivers The isolated power supply is realized with a simple half bridge converter that outputs...

Страница 8: ...DC and switch node respectively Figure 4 Top view of the board with all connectors marked 3 2 LED Indications A total of three power supplies are generated on the board The board has a LDO for generat...

Страница 9: ...ive voltage the input supply on the CO1 has to be adjusted accordingly The recommended gate source voltage of ROHM SiC MOSFET SCT4036KW is 15 18V However driving with 18V proves to be more efficient F...

Страница 10: ...egative gate turn off is chosen jumpers J3 and J4 can be used to select between 1 5V or 3V for high side device and low side device respectively In Figure 6 various configurations are shown on how to...

Страница 11: ...C which is 100V ns Users can adjust the gate resistor value to their wish as per the application requirements Additional gate source capacitance C27 C28 has been provided to control the di dt of the...

Страница 12: ...headers that act as receptacles can be soldered on test points TP3 TP4 TP5 and TP6 Figure 9 shows the locations of the test points on the board Figure 9 Top view of the board with the test point loca...

Страница 13: ...device current measurements As shown in Figure 10 on jumper J1 co axial shunt can be soldered It must be noted that a low inductive co axial shunt must be used for measure ments otherwise unnecessary...

Страница 14: ...with exposed copper and filled capped vias The recommended thermal interface sheets are SIL pad 2000 from Henkel adhesives or dual side stickable WL 404 11 from Fischer Elektronik The heatsink LAM 5 1...

Страница 15: ...d For double pulse tests heatsink need not be mounted but for continuous operation heatsink might be needed 6 Supply 15 18V at the connector CO1 and check for correct polarity 7 Three LEDs 5V Supply H...

Страница 16: ...however depending on the test current level an external bulk capacitor will be required to minimize the DC link voltage drop Set the required HVDC voltage and do not exceed above 900V For performing...

Страница 17: ...Connect accordingly at the connector CO2 or use the BNC connector Choose the input capacitor output capacitor and inductor as per requirement Check the connections of input output capacitors inductor...

Страница 18: ...18 23 User s Guide HB2637L EVK 301 2022 ROHM Co Ltd No 65UG002E Rev 001 Apr 2022 5 Schematic and BOM Figure 18 Schematic of the Power Supply Circuit...

Страница 19: ...19 23 User s Guide HB2637L EVK 301 2022 ROHM Co Ltd No 65UG002E Rev 001 Apr 2022 Figure 19 Schematic of the Power Stage...

Страница 20: ...AT54S 13 D7 D8 Zener diode 1000mW 5mA ROHM KDZVTF2 7B 14 D17 D18 Zener diode 1000mW 5mA ROHM KDZVTF2 0B 15 LED1 LED2 LED3 Green LED ROHM SML D13M8W ICs 16 IC1 LDO 3 42V 200mA ROHM BD540M2WEFJ 17 IC2 1...

Страница 21: ...21 23 User s Guide HB2637L EVK 301 2022 ROHM Co Ltd No 65UG002E Rev 001 Apr 2022 6 PCB Layout Figure 20 Top Layer Figure 21 Inner Layer1...

Страница 22: ...22 23 User s Guide HB2637L EVK 301 2022 ROHM Co Ltd No 65UG002E Rev 001 Apr 2022 Figure 22 Inner Layer2 Figure 23 Bottom Layer...

Страница 23: ...23 23 User s Guide HB2637L EVK 301 2022 ROHM Co Ltd No 65UG002E Rev 001 Apr 2022 Figure 24 Silkscreen Top Figure 25 Silkscreen Bottom...

Страница 24: ...ch technical information The Products specified in this document are not designed to be radiation tolerant For use of our Products in applications requiring a high degree of reliability as exemplified...