BQ24650: BQ24650

Star Xu

Part Number: BQ24650

BQ24650 application circuit as below.

Electronic load connect to output, electronic load mode is set to power mode when power greater than 0.5 W, BQ24650 output are powered down until the electronic load set up as the voltage mode (Analog Switch/Multiplexer (less than or equal to 5V) charge of a battery) is about 85% efficiency.

Bq24650 charging module is followed by the need for lithium ion battery and parallel the second DC/DC power circuit.

When the battery is not connected, directly connect the DC / DC load, the bq24650 will also be powered off and cut off.

Does we can connect the battery and parallel DC-DC load.

Thanks

Star

over 5 years ago

0 Joel Hernandez II over 5 years ago

TI__Mastermind 25800 points

Hey Star,

I'm a bit confused by your question. You want your DC/DC load and battery in parallel while the BQ24650 is disabled?

Regards,

Joel H

0 Star Xu over 5 years ago in reply to Joel Hernandez II

TI__Genius 9645 points

Hi Joel H

I want to use BQ24650 to power supply the DC/DC and charge the battery. the DC/DC and battery are in parallel. Is this feasible？

Thanks

Star

0 Joel Hernandez II over 5 years ago in reply to Star Xu

TI__Mastermind 25800 points

Hey Star,

This should be fine as long as your DC/DC can operate from the full battery voltage range.

Keep in mind that the battery and the DC/DC load will share the charging current, with the DC/DC taking priority, sinking current from the battery is need be. This may also impact the ability of the charger to terminate if the current drawn is larger than the termination current threshold.

Regards,

Joel H

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BQ24650: BQ24650