BQ25895: How to test production PCBA

Martin Tessier

Prodigy 130 points

Part Number: BQ25895

Hello,

I would like to have a way to test our production PCBA without using a physical battery.

Is there a way to do a fake battery for QC test purpose only, and include this circuit into our test fixture.

I would like to power the PCBA by the fake battery and verify if the charger is working.

Having a real battery is complicated to protected it against PCB short-circuit and have a long term reliability.

I did this in the past to test a battery charger IC circuit. Use a 2Ohm resistor to test the charger and supply 3.8v in the battery IC input. 1KOhm PIN 2 emulate the NTC resistor.

Any advice ??

best regards,

Martin

over 5 years ago

0 Martin Tessier over 5 years ago

Prodigy 130 points

0 Ning T over 5 years ago in reply to Martin Tessier

TI__Guru 57681 points

Martin,

It is ok to use battery simulator or use bi-directional power supply as battery simulator (e.g. Keithley 2420 sourcemeter).

Thanks,

Ning.

0 Martin Tessier over 5 years ago in reply to Ning T

Prodigy 130 points

Ok do you have a circuit proposal? The one I show above isn't working.

0 Martin Tessier over 5 years ago in reply to Martin Tessier

Prodigy 130 points

The Circuit I have is working good. I didn't have the good NTC value so the Charger wasn't working properly. I change it to 10kOhn and all works good like a real battery.

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BQ25895: How to test production PCBA