Can I set above 32Ahr in Qmax cell 0 with BQ34Z100EVM?

kim seongcheon

Prodigy 160 points

Other Parts Discussed in Thread: BQ34Z100EVM

hello.

I am evaluating BQ34Z100EVM board with Li-ion 29.4V49400mAh.

I saw text in manual that

Supports Battery Capacities Above 65 Ahr.

But, I can't set value abvoe 32Ah in full charge capacity.

How to set value above 32Ah in full charge capacity?

over 12 years ago

0 Doug Williams4811 over 12 years ago

TI__Expert 6470 points

Actually, the device is only operating up to 16 Ah. We will soon have a fix to increase to 32 Ah. For now, use scaling of X4 or greater for a 50 Ah pack. Set all mA and mAh parameters to your desired value/4. Then calibrate the gauge by setting a calibration value of 1//4 the actual applied value.

0 kim seongcheon over 12 years ago in reply to Doug Williams4811

Prodigy 160 points

sorry. i missed model i used.

I use BQ34Z100EVM.

I designed 29.4V20.8Ah battery before. And i got value FCC and RM correctly.

But I can't set FCC and RM correctly in the 29.4V49.4Ah battery.

Please your advise.

Power management

Power management forum

Can I set above 32Ahr in Qmax cell 0 with BQ34Z100EVM?