topic Re: How to disable the FS8410 in Power Management

How to disable the FS8410

WenChao — Mon, 07 Dec 2020 12:36:08 GMT

Hi,all

I'm trying to enable and disable the FS8410 by the INH siginal of the TJA1043,cause I need to make the radar sleep to save battery in some cases.but there's no ENABLE pin in the FS8410.And I want to know if there will be any power up sequence problems.

Please help me with this requirement,thanks!

BR.

WENCHAO

Re: How to disable the FS8410

guoweisun — Wed, 09 Dec 2020 02:43:09 GMT

In the rev5.0 datasheet page 15-14.1 Simplified functional state diagram

You can get from Normal-all regulator ON to stand by mode by GoTo_STBY=1 or FS_READY=0 or (VALID_WD=WAKE1=WAKE2=0)

Re: How to disable the FS8410

WenChao — Wed, 09 Dec 2020 03:29:18 GMT

Hello,SUN

I've tried the GoTo_STBY=1 command,and i find this will make the PMIC FS8410G3ES sleep for a little time,then it would be reset immediately.I havn't find the key point until now.If there's something I've missed,please let me know,thanks!

BR.

WENCHAO

Re: How to disable the FS8410

WenChao — Wed, 09 Dec 2020 05:47:39 GMT

Hi,guowei

I've find my problem,which is I didn't make the W1DIS=1,so when the PMIC is powering down,it would wake up immediately because the PIN wake1 is connect to VSUP directly.

Sorry to bother you for this simple question.Thank you very much!

BR,

WENCHAO