TPS65261: OVP response time

Takahiro Saito

Part Number: TPS65261

Hi team,

The datasheet describes TPS65261 and TPS65261-1 has OVP.
I want to know how much time it takes from over voltage detection to protection.

Regards,
Saito

over 6 years ago

0 Neal Zhang over 6 years ago

TI__Expert 4720 points

Hi Saito,
It will turn off high-side MOSFET within one switching cycle. We haven't measured the exact time, but it should be <100ns. the time is because of propagation delay of signal inside IC, and the falling time of SW. If you want to know the exact time, please provide your spec and schematic.

0 Takahiro Saito over 6 years ago in reply to Neal Zhang

TI__Expert 5365 points

Hi Neal,

Thank you for answer the question.

I have one more question about the OVP. The device executes the over-voltage protection when the FB voltage is over the 107% of VREF(=0.6V). Is that correct?

Regards,
Saito

0 Jason Wang (BSR-MV) over 6 years ago in reply to Takahiro Saito

TI__Genius 9550 points

Saito,
yes, you are right. The device executes the over-voltage protection when the FB voltage is over the 107% of VREF(=0.6V).

0 Takahiro Saito over 6 years ago in reply to Jason Wang (BSR-MV)

TI__Expert 5365 points

Hi Jason,

Thanks!

Regards,

Saito

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TPS65261: OVP response time