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CSD19503KCS: SPARK IN THE MOSFET

GOWTHAM RAJMOHAN
Prodigy 20 points
Part Number: CSD19503KCS
Other Parts Discussed in Thread: CSD

We have developed customized inverter with Gate Driver 8323 with MOSFET CSD 19503KCS for PMSM Motor Control with F280049C.

we note that the PWM signal and gate signal are fine.

The board was supplied with 24 V, 20 KHZ PWM signal with 2us deadband to the gate driver. 

one gate driver was used to control all the six MOSFET(AH,AL,BH,BL,CH,CL)

The TI Kit motor 24 V was connect as load, but after a small spin the motor was stop running.

could you please help on the above please!

  • 0
    TI__Expert 7425 points

    Gowtham,

    Thanks for you interest in TI products.

    Can you please provide me with the specific name of the motor kit you used as the load and I will look into this for you.

    These voltages are not normally enough to force a spark. There may have been a foreign piece of material somehow got on the pcb and shorted the MOSFET leading to a temporarily short which was then blown when power applied and caused the spark. This may have damaged the MOSFET.

    Have you checked the FETs to see if the MOSFETs have still got the same impedance from drain to source or gate to source?

    Have you tried replacing the MOSFET that had the spark and see if issue occurs again?

    Many thanks

    Chris

  • 0 in reply to Chris Bull
    TI__Mastermind 32415 points

    Hello Gowtham,

    Following up to see if you have any additional information you can share with us. Please let us know.

    Best Regards,

    John Wallace

    TI FET Applications

  • 0
    TI__Mastermind 32415 points

    Hello Gowtham,

    Has your issue been resolved? Please let me know if you need any further assistance.

    Best Regards,

    John Wallace

    TI FET Applications

  • 0 in reply to John Wallace1
    TI__Mastermind 32415 points

    Hello Gowtham,

    Since I have not gotten a response from you, I will assume your issue has been resolved and close this thread.

    Best Regards,

    John