TPS25942L: TPS25942L

Jamie Tseng

Intellectual 2405 points

Part Number: TPS25942L
Other Parts Discussed in Thread: TPS2595, TPS24740

Hi Team,

Can the TPS25942L reverse protection be controlled to shut down?

Thanks and best regards,

Jamie

over 5 years ago

0 Praveen GD over 5 years ago

TI__Guru 57737 points

Hi Jamie,

Can you please elaborate your question ?

Do you mean will TPS25942L will shutdown for reverse current protection ?

0 Jamie Tseng over 5 years ago in reply to Praveen GD

TI__Intellectual 2405 points

Hi Praveen,

Sorry for the confusing expression.

I mean is it possible to enable and disable reverse protection?

Thanks and best regards,

Jamie

0 Praveen GD over 5 years ago in reply to Jamie Tseng

TI__Guru 57737 points

Hi Jamie,

Unfortunately, we cannot disable the reverse current protection of TPS25942L.

In case you need an efuse with out reverse current protection, you can consider using TPS2595. If you can explain in detail your system use case, I will be able to help you in suggesting a more suitable solution.

0 Praveen GD over 5 years ago in reply to Praveen GD

TI__Guru 57737 points

Hi Jamie,

Can you explain your system use case so that I will be able to help you better.

0 Jamie Tseng over 5 years ago in reply to Praveen GD

TI__Intellectual 2405 points

Hi Praveen,

Because I saw Reverse protection threshold at -3mV, -9.3mV, -15mV.
Currently BBU design discharge Max. current = 0.2A, If Rds on=42mOHM; V_reverse_i =-0.2*42m= -8.4mV.
It is bound to trigger reverse current protection.

Thanks and best regard,

Jamie

0 Praveen GD over 5 years ago in reply to Jamie Tseng

TI__Guru 57737 points

Hi Jamie,

Yes, In case 0.2A reverse current flows in the device, the device can cut off Input and Output.

As mentioned earlier, if you do not want reverse current protection feature you can consider using TPS2595.
In case you want adjustable reverse current threshold feature, our Hotswap controller, TPS24740 has this feature.

0 Praveen GD over 5 years ago in reply to Praveen GD

TI__Guru 57737 points

Hi Jamie,

Hope your question is answered. In case you do not have any further questions, can we close this thread ?

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TPS25942L: TPS25942L