Other Parts Discussed in Thread: CSD88599Q5DC
Hi all,
After discussing the problem of 'DRV8323 gate drive fault' with you last time,
I modified the drive current to run for a period of time, and the same situation still appeared
(IDRIVE:IDRIVEN_HS_120MA,IDRIVEP_HS_60MA ,IDRIVEN_LS_120MA,IDRIVEP_LS_60MA )
The faulty machine Indicates gate drive fault on the B high-side MOSFET.We measured the resistance values of each pin of MOS, and they were all normal,
Then I configured the Driver Control Register (DIS_GDF = 1b) to force PWM output,the waveform is as follows
CH2: Continuous high-side source sense pin voltage (SHx) using a regular single ended probe
CH3: High-side gate drive pin voltage with respect to SHx (GHx) using a differential probe
We have no direction on this problem now, do you have any suggestions.
We want to know more about the internal circuit structure of 8323. Can you provide the information
Please refer to my last question
Attach my email address, you can contact me at any time(zhang_xi@piec.com.cn)
Thanks
ZX