TPS25983: Reverse polarity protection

paolo zavagli

Prodigy 10 points

Part Number: TPS25983

Tool/software:

Hi

TPS25983 support reverse polarity protection?

over 1 year ago

0 Arush Gupta over 1 year ago

TI__Mastermind 39045 points

Hi!

Welcome to E2E.

No, TPS25983 do not have Reverse polarity protection but by adding one diode, you can implement it.

This is an example from another datasheet but something similar should be possible for this device also.

Best Regards,
Arush

0 Arush Gupta over 1 year ago in reply to Arush Gupta

TI__Mastermind 39045 points

You can also share your requirements and maybe I can recommend alternative part number.

0 paolo zavagli over 1 year ago in reply to Arush Gupta

Prodigy 10 points

Hi Arush
Thanks for support

We need to satisfy following requirements

1) Revers polarity protection
2) inrush limiter
3) OVP
4) OCP

Working pover supply 12 to 24V
Input Current up to 15A

BR
Paolo

+1 Arush Gupta over 1 year ago in reply to paolo zavagli

TI__Mastermind 39045 points

Hi Paolo,

Unfortunately, we do not have any eFuse which can support 15A and have reverse polarity protection. I think this part (TPS25983) with the signal diode will be the best solution.

Best regards,
Arush

0 paolo zavagli 11 months ago in reply to Arush Gupta

Prodigy 10 points

Hi Arush
Thanks so much
Can I ask you if you can give me a quote for TPS25983? The volume is about 20k Years

0 Arush Gupta 11 months ago in reply to paolo zavagli

TI__Mastermind 39045 points

Hi Paolo,

I am not from marketing team so I won't be able to provide you any price for this. Do you have anyone from TI sales in contact with you.

Please accept my friend request.

Best Regards,
Arush

0 paolo zavagli 11 months ago in reply to Arush Gupta

Prodigy 10 points

Hi Arush
I understand, thanks very much for your support

Best regards
Paolo

0 paolo zavagli 11 months ago in reply to Arush Gupta

Prodigy 10 points

Hi Arush
Can I ask you a clarification on the implementation of protection for reverse polarity?

in this implementation on TPS25983 is mandatory to mount the external mosfet for reverse current blocking?

Or is enough to add the diode on the GND line as on your example?

BR
PAaolo

0 Arush Gupta 11 months ago in reply to paolo zavagli

TI__Mastermind 39045 points

Hi Paolo,

I think you got confused between reverse current blocking and reverse polarity protection.

RPP is when you plug vin and gnd in reverse order.

RCP is when Vout is greater than Vin and current can flow from out to in.

The above mentioned implementation is for enabling RPP with TPS25983.

If you need RCB using this device, you will have to use external BFET with this device.

Best Regards,
Arush

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TPS25983: Reverse polarity protection