The customer is using BQ76942.
CHG pin control charging hish side MOS.
DDSG pin control discharging low side MOS.
But when the customer turn off hish side CHG FET, the DDSG FET will turn off first and then turn on again.
This will cause the system screen to flicker when turning off the CHG FET.（Using chg_pchg_off command)
The waveform is the GS of the MOSFET.
What is the potential reason?
Hi Fabio,
See below from the TRM. The 0x0093, 0x0094, and 0x0097 subcommands should not be used when the DDSG or DCHG pins are configured for DDSG or DCHG mode.
See this previous thread that I believe will explain the behavior you are seeing: (+) BQ76952: Need clarification on DDSG and DCHG operation - Power management forum - Power management - TI E2E support forums.
Regards,
Max Verboncoeur
