BQ24157: BQ24157 VBUS still have 4.38V sometimes after unplugging 5V USB or AC adapter

Magic

Part Number: BQ24157

BQ24157 VBUS still have 4.38V sometimes after unplugging 5V USB or AC adapter，and VBAT=4.24V，And 4.38V will keep very long time.

why is it and how to deal with it ?

Thinks

over 5 years ago

0 Ricardo over 5 years ago

TI__Genius 10385 points

Magic,

Do you mind sending your register settings?

Thanks,

Ricardo

0 Magic over 5 years ago in reply to Ricardo

Prodigy 130 points

Ricardo,

My register setting is as blow:

0x00=0xd0 0x01=0xf8

0x02=0xaa 0x03=0x51

0x04=0x7a 0x05=0x00

0x06=0x77

0 Magic over 5 years ago in reply to Magic

Prodigy 130 points

Ricardo,

update my register setting is as blow:

0x00=0xd0 0x01=0x78

0x02=0xb6 0x03=0x51

0x04=0x0a 0x05=0x04

0x06=0x5a

0 Ricardo over 5 years ago in reply to Magic

TI__Genius 10385 points

Magic,

Your register settings look fine and there are no faults indicated. Are you able to recreate this on our EVM? If not, do you mind sending your schematic?

Thanks,

Ricardo

0 Ricardo over 5 years ago in reply to Ricardo

TI__Genius 10385 points

Hello,

I have not heard back from you in a while. Please let us know if you have any further questions, otherwise I will be closing this thread.

Thanks,

Ricardo

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BQ24157: BQ24157 VBUS still have 4.38V sometimes after unplugging 5V USB or AC adapter