BQ25601: About Trickle charge waveform

Tsukui Yusuke

Guru 21930 points

Part Number: BQ25601
Other Parts Discussed in Thread: BQ24616

Hi,

Could you tell me the charge current waveform and charge voltage waveform in Trickle charge condition?
As a result of customer evaluation, the voltage and current waveforms were intermittent.
I think it's probably working fine.
However, there is no waveform source to compare.
Could you give me advice?

Regards,
Yusuke

over 3 years ago

0 Ning T over 3 years ago

TI__Mastermind 46551 points

Yusuke,

The device will be in PFM (Pulse Frequency Modulation) mode in default when trickle charging. The waveforms should be similar to Fig 43-45 on https://www.ti.com/lit/ds/symlink/bq25601d.pdf

The device switches to PFM control at light load or when battery is below minimum system voltage setting or charging is disabled. The PFM_DIS bit (REG01[7]) can be used to prevent PFM operation in either buck or boost configuration.

Thanks,

Ning

0 Tsukui Yusuke over 3 years ago in reply to Ning T

Guru 21930 points

Hi Mao,

It was a miss post.
I close this thread.

BR
Yusuke

0 Hong Mao over 3 years ago in reply to Tsukui Yusuke

TI__Expert 5590 points

Hi Yusuke:

The question is BQ24616? You need to start a request.

0 Tsukui Yusuke over 3 years ago in reply to Hong Mao

Guru 21930 points

Hi Mao,

It was a miss post.
I close this thread.

BR
Yusuke

Power management

Power management forum

BQ25601: About Trickle charge waveform