BQ24725A: I was recently trying to understand the battery charging section of a la7912 p motherboard .there in the charing section two mosfets are used are charge pumps .can you pls explain the stacked mosfets in detail thank you.

Varun Panicker

Part Number: BQ24725A

I was recently trying to understand the battery charging section of a la7912 p motherboard .there in the charing section two mosfets are used are charge pumps .can you pls explain the stacked mosfets in detail thank you.

over 5 years ago

0 Wang5577 over 5 years ago

TI__Guru 56650 points

Varun,

Charger group doesn't do the motherboard design. So, I cannot explain the design of LA7912. Where do you buy the LA7912?

0 Varun Panicker over 5 years ago in reply to Wang5577

Prodigy 20 points

Wang5577 said:
Varun,
Charger group doesn't do the motherboard design. So, I cannot explain the design of LA7912. Where do you buy the LA7912?

I was talking about the bq24725A chip which is used inside a laptop motherboard whose board no is la7912p. There in the battery charging section bq24725a chip is used along with two stacked n channel mosfets . So the problem is i m not able to understand how exactly the mosfets along with the chip bq24725a pin 15,16,17,18,19 works to charge the battery. I detailed animated video will be verys helpful if possible. Hope you got my question now. Thanks in advance

0 Wang5577 over 5 years ago in reply to Varun Panicker

TI__Guru 56650 points

TI has buck converter basic video training.ti.com/buck-converter-basics
The two n channel mosfets do the "pulse modulator" function.
You can also Google search "buck converter" to find the answer.

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BQ24725A: I was recently trying to understand the battery charging section of a la7912 p motherboard .there in the charing section two mosfets are used are charge pumps .can you pls explain the stacked mosfets in detail thank you.