BQ24266 not charging

naveen KUMAR

Prodigy 20 points

DPM resistors are 26.7k and 10k, as on the data sheet

- resistor on ISET is 400ohm

- IN voltage is at 12 V

- SYS voltage is about 4.2-4.3 V

i am not using usb pins usb1,usb2,usb3, ce#

voltage at drv pin 3.2

over 7 years ago

0 Joel Hernandez II over 7 years ago

TI__Mastermind 25800 points

Hey naveen,

The voltage divider at the TS pin puts that pin at ~69%*VDRV, which is well outside the TCOLD range. The charger will not charge if outside of TCOLD. Consider changing R7 to a lower value to give you something around 50%.

Let us know if this solves your issue.

Regards,

Joel H

0 Jeff F over 7 years ago in reply to Joel Hernandez II

TI__Guru**** 166996 points

Naveen,

Why is DRV voltage so low? With VIN=12V, it should be in the 5-6V range. Is there a load on DRV, other than TS resistors?

Power management

Power management forum

BQ24266 not charging