BQ24780S: Maximum duty cycle of BQ24780S

Lumina Gui

Part Number: BQ24780S

Hi TI Teams,

We have one question about the maximum duty cycle of BQ24780S, can you help to confirm it?

From the datasheet we can learned that the duty cycle D = VOUT/VIN. Now we have a new notebook project, the battery is 3-cell (13.2V, 4.4V for 1-cell battery), and the input voltage is 13.8V, did the battery could be full charged?

Thanks,

Kind Regards

8 months ago

0 Aya Khedr 8 months ago

TI__Genius 15942 points

Hi Lumina,

Thank you for reaching out!

Please see the following thread for details on the maximum duty cycle of the BQ24780S. As a rule of thumb, we typically suggest that the minimum adapter voltage should be at least 1V higher than the battery's maximum charge voltage.

https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/999435/bq24780s-bq24780s-maximum-duty-cycle

Please let me know if you have additional questions/concerns.

Best Regards,

Aya Khedr

Power management

Power management forum

BQ24780S: Maximum duty cycle of BQ24780S