This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

  • Resolved

CSD19532KTT: How to design the PCB layout so that the drain and sorce terminal can pass current as high as 50A at least?

Prodigy 100 points

Replies: 3

Views: 116

Part Number: CSD19532KTT

Hello, TI community! Thans for your advice in advance.

I'm now designing pulsed power with CSD19532KTT (N-MOSFET, drian-to-source continue current 98A at 100 C). I want to parallel 10 CSD19532KTT to obtain high output current, say 500A or more, so each MOSFET need to pass 50A.

If I mount the MOSFETs on PCB board, the trace width must keep too wide to safely carry the high current. So, how should I design the PCB layout? OR

Is there any other solution to mount the paralleled MOSFETs, and ensure the current carry ability?

I searched for some resources but I still don't know how to realize it. 

Looking forward to your responding, and thanks very very much!

  • Hello Hongwei Pan,
    Thanks for your interest in TI MOSFETs. High current PCB design can be quite challenging. You should consider using a multilayer PCB with plated thru-holes to distribute the current to the other layers. You can also mount the FETs on both sides of the board. What is the duration and duty cycle of the 50A pulse? How are you driving the FETs? Paralleling multiple FETs for pulsed power is also challenging. Because of parametric variations in threshold voltage, one FET may turn on first and be overstressed. You also need to make sure that you're not violating the MOSFET safe operating area (SOA).

    Best Regards,

    John Wallace

    MOSFET technical information on ti.com here

  • In reply to John Wallace1:

    Hello Hongwei Pan,
    Please look at these reference designs for examples of high current designs:
    www.ti.com/.../TIDA-00449
    www.ti.com/.../TIDA-00364
    www.ti.com/.../TIDA-00281

    Best Regards,

    John Wallace

    MOSFET technical information on ti.com here

  • In reply to John Wallace1:

    Thank you very much for your kind help!

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.