BQ25756EVM: Feedback resistance setting

Mouhanned Brahim

Part Number: BQ25756EVM
Other Parts Discussed in Thread: BQ25756

Hi,

I want to use the BQ25756 with 6S battery but the defaut setting is for 7S battery, 2 jumpers are used for the feedback resistors setting :

JP1 for 7S battery with a bottom resistor of 13.7K ohms

JP2 for other battery voltage with another bottom resistance .

But for my side in the schematic or the PCB i dont' see a footprint or a reference for external resistor with JP2 in the bottom side(see attached screenshot of the schematic).

Have you an idea how i can change the feedback voltage via JP2 jumper and external resistance?

Regards

over 1 year ago

0 Ethan Galloway over 1 year ago

TI__Mastermind 31185 points

Hello Mouhanned,

Here's a few things you can do to set the resistance.

You can solder a resistor directly to JP2 to set the value

You can also use a female header and solder the new resistor to legs of the header.

Let me know if you have any more questions.

Best Regards,
Ethan Galloway

0 Mouhanned Brahim over 1 year ago in reply to Ethan Galloway

Prodigy 40 points

Hi Ethan,

Thanks I will try this.

Regards

Power management

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BQ25756EVM: Feedback resistance setting