BQ24650: disable charge termination , never stop charging?

Bruce li

Part Number: BQ24650

Dear TI Expert,

In the datasheet, we can infer that if Pull TERM_EN to VREF to allow charge termination, then the charger will be terminated when current less than 1/10 Fastcharge Current.

So if Pull TERM_EN to GND to disable charge termination, what will happen, charging never stop (STATx always show "Charge in progress")? or charging will stop when current is close to 0?

Is there any risk to disable charge termination ? Thanks a lot

over 7 years ago

0 Kedar Manishankar over 7 years ago

TI__Mastermind 24075 points

Hello Bruce,
Disabling charge termination means that instead of entering the Termination phase and cutting off the current when it reaches the Iprech and Iterm threshold, the charger will stay in the Fastcharge Voltage Regulation Phase (CV mode), and the current will continue gradually tapering off. The charger will remain in CV mode and will not stop switching unless the battery voltage exceeds the charge voltage limit. There is no risk to disabling termination, however your charge profile will take longer as the current continues to tapers.

0 Bruce li over 7 years ago in reply to Kedar Manishankar

Genius 5580 points

Dear Kedar,
Got it, thanks a lot for your support.

0 Kedar Manishankar over 7 years ago in reply to Bruce li

TI__Mastermind 24075 points

Glad the issue was resolved.

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BQ24650: disable charge termination , never stop charging?