TPS53659: the PWM state during power off sequence

Fanbin Meng

Part Number: TPS53659

Hi Team,

when we follow the power down seqence , what is the PWM state when the VR_EN is removed but the 3.3V is still there?

and what is the PWM state during the 3.3 power off?

0 Travis Williams over 3 years ago

Hello Fanbin,

During both of those conditions, the PWM will go into high impedance mode and tell the power stage to turn off both FETs.

Thanks,

Travis

Power management forum