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CSD18532KCS: Parallel FETs CSD18532KCS Application Question

Part Number: CSD18532KCS

Hi Sir,

My customer use our CSD18532KCS for inverter 1000W project.

Topology is push-pull with parallel FETs. High side 6 PCS / Low side 6 PCS.
Currently have MOSFET damage issue, we find change gate resistor can improve this phenomenon. why?
Because test three different date code, find only one date code out of pass.

Do you have any ideal can explain phenomenon for gate resistor from 50 ohm change to 10 ohm? Thanks,

  • Wen, 

    I sent your question over to our apps engineers. I will let you know what they have to say but we may need more info. 

  • Weng,
    As suspected, we are going to need a bit more information:

    1. Please provide schematic and layout of the design.
    2. At which test did the device fail? (startup, shutdown, steady state, high temp, low temp, transient, input/output/load current…?)
    3. Which device was failed? (HS, LS?) what’s the failure rate?
    4. Provide VGS and VDS waveforms of the device in operation, at the conditions which cause the failure, with 50Ohm and 10Ohm gate resistors.