TPS65987D: Disable "Dead Battery" feature

Roger Lee6

Part Number: TPS65987D
Other Parts Discussed in Thread: TPS65987

Since we don't want that TPS65987D is alive during S3 state while TBT device is pluged.

Can the "Dead Battery Supply" (TPS65987D powered from VBUS1 or VBUS2) option be disable? And how to disable?

0 Eric Beljaars over 7 years ago

Hi Roger,

You can select the "BP_NoResponse" setting for the ADCIN1 configuration pin so that the TPS65987D does not respond in dead battery mode.

If this answers your question, PLEASE select This resolved my issue

Thank you,

Eric

0 Roger Lee6 over 7 years ago in reply to Eric Beljaars

Eric,

Thanks for your comment.

Since GPIO output "1" sometimes while ADCIN1 is tied with 0.09 (10K/110K, 0~0.18 for BP_NoResponse) Divider, so I suppose TPS65987 is alive.

Now, I try HRESET="1" during S3 state, then GPIO can keep "0". This colud be a alternative solution

Roger

0 Eric Beljaars over 7 years ago in reply to Roger Lee6

Hi Roger,

Yes, keeping HRESET=1 during S3 state could be used as an alternative solution.

Thnak you,
Eric

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