BQ25100: BQ25100 Reverse voltage protection

Star Xu

Genius 9645 points

Part Number: BQ25100

I have a query need your help.

Does this chip have reverse voltage protection?

Does the red mark is reverse protection.

Thanks

Star

6 months ago

0 Michael Emanuel35 6 months ago

TI__Mastermind 33285 points

Hello Star,

No this device is not protected from reverse input protection if the input is plugged in backwards.

However, the body diode in the red box will block voltage from the output to the input if the input is not attached.

Regards,

Mike Emanuel

0 Star Xu 6 months ago in reply to Michael Emanuel35

TI__Genius 9645 points

Hi Mike

Thanks for your reply.

Michael Emanuel35 said:
the body diode in the red box will block voltage from the output to the input if the input is not attached.

As long as the connection is not correct, whether IN is short-circuited to GND or IN and GND are connected reversely, there will be no conduction between IN and OUT.

Is my understanding correct?

Thanks

Star

0 Michael Emanuel35 6 months ago in reply to Star Xu

TI__Mastermind 33285 points

Hello Star,

That is not correct. If the input is applied in reverse, the device is not protected.

There will be reverse current and possible damage if the IN is shorted to GND.

Regards,

Mike Emanuel

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BQ25100: BQ25100 Reverse voltage protection