DRV8323: 2 gate drive output pins dying

Tonderai Nyabepu

Part Number: DRV8323
Other Parts Discussed in Thread: TIDA-00774, CSD88584Q5DC, TIDA-01516

Tool/software:

Hello, I'm using the DRV8323S coupled with the CSD88584Q5DC mosfets much like the TIDA-01516 and TIDA-00774 reference designs, yet when I attempt to commute the motor, at least 2 gate drive output pins consistently die, what am I doing wrong, what is it that's causing this and how.

Tonderai

5 months ago

0 Tonderai Nyabepu 5 months ago

Prodigy 20 points

commutate, pardon me

0 Davis Jackson 5 months ago

TI__Expert 3020 points

Hi Tonderai,

Can you please provide waveform images of the GHx or GLx pins that are facing this issue and the corresponding INHx or INLx pins when you try to commutate the motor? Is there a fault being reported by the nFAULT pin or in one of the SPI status registers?

Best,

Davis

0 Davis Jackson 4 months ago in reply to Davis Jackson

TI__Expert 3020 points

Hi Tonderai,

Just wanted to follow up, are you still seeing this issue?

Best,

Davis

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DRV8323: 2 gate drive output pins dying