BQ25713: Unexpected high BATDRV level

Antony Lin

Part Number: BQ25713

Hi,

We have three specific board that BATDRV is high as shown below. May I know what could keep BATDRV at high level like this for further debugging?

	VBUS	VSYS	VBAT	BATDRV	VREGN
Board1	19.9V	9.2V	9.27V	9.2V	6V
Board2	19.9V	13.2	13V	13.2V	6V
Board3	20V	11V	10.6V	11V	6V

Thanks!

Antony

over 5 years ago

0 Tiger Zhou over 5 years ago

TI__Mastermind 33525 points

Hi, Antony,

BATFET is a P-FET, when the BATDRV is the same level as the VSYS, the BATFET is OFF. There are many scenarios that P-FET is off, for example, charge current is Zero.

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BQ25713: Unexpected high BATDRV level