BQ28Z610: Dynamic Max Charging Current

Kevin Makovy1

Part Number: BQ28Z610
Other Parts Discussed in Thread: BQ24773

Hello,

I would like to use BQ28Z610 in broadcast mode and BQ24773 to dynamically set a max charge current based on system power state (system on or off).

I have another microcontroller on the same I2C bus.

Reading through the BQ28Z610's technical reference manual the only way I can see of doing this is having the microcontroller update the BQ28Z610's Standard Temp Charging - Current Low/Med/High registers to the max current I would like (using only standard temp as an example).

Is this a viable/the best way to dynamically update max charge currents?

Also - it seems the BQ28Z610's Rev A firmware zip file required for broadcast mode (SLUC653A.ZIP) is corrupted on the product page website. Is it possible to email/message me this zip file?

Thanks for the help,

Kevin

over 5 years ago

0 Wyatt Keller over 5 years ago

TI__Guru** 105760 points

Hello Kevin,

I will look into setting the broadcast mode to change the max charge current depending on your systems state and get back to you.

for the firmware:

I was able to access the firmware zip file, is it just the broadcast mode that isn't working?

Try this link: www.ti.com/.../sluc653

Sincerely,

Wyatt Keller

0 Kevin Makovy1 over 5 years ago in reply to Wyatt Keller

Prodigy 140 points

Thanks Wyatt - that firmware download worked. I was just making sure I had the latest as the tech manual made it sound like it doesn't ship with latest.

Look forward to hearing back if dynamic max charge currents work.

Thanks,

Kevin

0 Wyatt Keller over 5 years ago in reply to Kevin Makovy1

TI__Guru** 105760 points

Hello Kevin,

We would recommend not changing the max charge current with the temperature. It would be best to use your host controller to read the desired information from the bq28z610 then change the charge controller current with this information.

Sincerely,

Wyatt Keller

Power management

Power management forum

BQ28Z610: Dynamic Max Charging Current