How to disable bq25504?

Daniel_V

Other Parts Discussed in Thread: BQ25504

Hello.

I will like to use the bq25504 as a solar battery charger together with an usb charger. When the usb port is connected I intend to disable the bq25504 and enable the usb charger, to prevent any conflicts between them.

How can I disable the bq25504?. Using overvoltage detection pin maybe, or Voc_samp..., any ideas or experiences?.

Thanks.

over 12 years ago

0 Jeff F over 11 years ago

TI__Guru**** 155706 points

Pulling the VIN pin to GND completely disables the bq25504. Pulling VBAT_OV to VSTOR stops the bq25504 from switching.

0 Daniel_V over 11 years ago in reply to Jeff F

Prodigy 50 points

Great, I think i will use a N channel mosfet to short Vin pin using a msp430 pin to activate it, or perhaps Vbus from the usb connector without expending one microcontroller output for that.

Thank you very much Jeff.

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How to disable bq25504?