USB-PD-CHG-EVM-01: Chargin status

Aria10

Prodigy 130 points

Part Number: USB-PD-CHG-EVM-01
Other Parts Discussed in Thread: BQ25798, TPS25751

Tool/software:

How to know when charging is complete on this EVM? Does the stat led show any difference

2 months ago

0 Jeff F 2 months ago

TI__Guru**** 163196 points

Hi Aria,

As long as BQ25798's EN_TERM bit =1 (default), STAT goes hiZ (LED off) when termination completes.

Regards,
Jeff

0 Aria10 2 months ago in reply to Jeff F

Prodigy 130 points

Ok so then

Solid led: charging

No led: not getting power? OR charging terminated

Blinking led: faults?

0 Jeff F 2 months ago in reply to Aria10

TI__Guru**** 163196 points

Hi Aria,

Yes to all above.

Regards,

Jeff

0 Aria10 2 months ago in reply to Jeff F

Prodigy 130 points

Fair thank you

So my led is blinking as i connected my 3s battery to it and flashed it with the eval fw.

I initially mistook it as a charging indicator

How can I find out why its complaining or what the fault is?

+1 Jeff F 2 months ago in reply to Aria10

TI__Guru**** 163196 points

HI Aria,

The charger has status and fault registers at address 0x6A registers REG0x1B through REG0x27. There is a passthrough I2C read/write from the TPS25751 to BQ25798.

Regards,

Jeff

Power management

Power management forum

USB-PD-CHG-EVM-01: Chargin status