BQ25628E: How to use PMID pin?

Gabriel Silva1

Prodigy 10 points

Part Number: BQ25628E
Other Parts Discussed in Thread: BQ25628

Tool/software:

Is there a way to activate HSFET to power loads with PMID pin?

over 1 year ago

0 Ning T over 1 year ago

TI__Guru 57611 points

Hi,

1. When valid VBUS is present, PMID is connected to VBUS.

2. When valid VBAT is present, PMID can be support by OTG mode from VBAT.

Thanks,

Ning.

0 Gabriel Silva1 over 1 year ago in reply to Ning T

Prodigy 10 points

Based on the Table 5.1 of BQ25628E datasheet rev. 02/2024, this IC dont have OTG function. In the same datasheet I can't found any way of activate this PMID output. Can you confirm that is possible to use PMID pin and how activate ?

0 Garrett Kreger over 1 year ago in reply to Gabriel Silva1

TI__Mastermind 31510 points

Hi Gabriel,

Please allow me to clarify. The BQ25628E does not have OTG function. When a valid VBUS is present PMID is connected to VBUS, but there is no way to turn on HSFET in battery only operation.

The BQ25628 (non E version) does have OTG function where you can enable OTG function via I2C to power loads at PMID pin. Please see BQ25628 datasheet section 8.3.6 for further details.

Best Regards,

Garrett

0 Gabriel Silva1 over 1 year ago in reply to Garrett Kreger

Prodigy 10 points

Ok. My first question was about BQ25628E which is the part I am using. Now it is very clear. thank you!

Power management

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BQ25628E: How to use PMID pin?