TPS25200-Q1: FMD Inquiry

Andy Snawerdt

Part Number: TPS25200-Q1

Hi Team,

My customer is looking to use our TPS25200-Q1 as protection for an off-board load, and would like to understand if any of the failure modes in our FMD report could result in a loss of the overvoltage clamp protection. One that concerns us is "Vout stuck on", I assume this would result in failure to protect from an overvoltage condition?

Regards,

Andy

over 2 years ago

0 Kunal Goel over 2 years ago

TI__Guru 56470 points

Hi Andy,

I will check and get back on this.

Regards

Kunal Goel

+1 Kunal Goel over 2 years ago in reply to Kunal Goel

TI__Guru 56470 points

Hi Andy,

The failure mode distribution estimation for comes from the combination of common
failure modes listed in standards such as IEC 61508 and ISO 26262, the ratio of sub-circuit function size and
complexity and from best engineering judgment. So they are random and when we say that VOUT stuck on FMD is 5% that does not out of 100 times 5 would be VOUT stuck on.

Also I agree that if failure mode is VOUT stuck on then overvoltage may not be clamped at output.

Regards

Kunal Goel

Power management

Power management forum

TPS25200-Q1: FMD Inquiry