BQ25616JEVM:Charging current does not exceed 1.4A. ICHG setting value (2.25A) is not reached.

Toshinori Kurita

Part Number: BQ25616JEVM

Nice to meet you. Dear Support Desk.

Charging evaluation using BQ25616JEVM.
I adjusted RICHG so that ICHG is 2.25A.
But the charging current does not exceed 1.4A.
Please help me with any solution.

VBUS: 5V/3A
ICHG: 2.25A (RICHG: 300Ω)
ILIM: 3A (RIIM: 160Ω)

real battery
3.7V/3000mAh

thank you.

over 1 year ago

0 Ning T over 1 year ago

TI__Guru 50931 points

Hi,

Please obtain the charger operating conditions such as VBUS (voltage at VBUS pin), IVBUS, VBAT (voltage at BAT pin), IBAT, VSYS, ISYS when the charging current is below your expectation. Please also check if the input source is over-loaded, either the current exceeds the input current limit or the VBUS pin voltage falls below the input voltage limit. Please refer to 9.3.6.2 Dynamic Power Management and below for the details.

https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1025464/faq-bq25618-why-does-ichg-reduce-during-the-input-current-dpm-dynamic-power-management-or-the-input-voltage-dpm-for-the-chargers-bq25618-bq25618e-bq25619-bq25611d-bq25616-bq25600-bq25600d-bq25601-bq25601d-bq25606

https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1025466/faq-bq25618-faq-why-does-ichg-reduce-when-reaching-the-maximum-duty-cycle-for-the-bq25618-bq25618e-bq25619-bq25611d-bq25616-bq25600-bq25600d-bq25601-bq25601d-bq25606

Thanks,

Ning.

Power management

Power management forum

BQ25616JEVM:Charging current does not exceed 1.4A. ICHG setting value (2.25A) is not reached.