TPS3701 respond time issue??

Jericho Tsai

Intellectual 380 points

Other Parts Discussed in Thread: TPS3701

Hi Sir,

My customer used TPS3701 have some issue.

When monitor voltage fast on/off but OUTA can't Low to High.

you can check to below waveform.

Why OUTA can't low to high when INA low to high?

over 8 years ago

0 Ryan Eslinger over 8 years ago

TI__Guru 55940 points

Please allow until the next US business day for a reply.

Very respectfully,
Ryan

0 Ryan Eslinger over 8 years ago in reply to Ryan Eslinger

TI__Guru 55940 points

Hi ,

Does the OUT_A go high if you wait?

Also are you seeing this on multiple parts or just one?

Very Respectfully,
Ryan

0 Jericho Tsai over 8 years ago in reply to Ryan Eslinger

Intellectual 380 points

Does the OUT_A go high if you wait?

No, it doesn't. It will stay low if the on/off time is 30mS and according to datasheet, the (LH)delay time will be 28.1uS, you can refer below. but when test in longer on/off time which is 1S, the behavior will be normal.

Also are you seeing this on multiple parts or just one?

Multiple parts.

0 Ryan Eslinger over 8 years ago in reply to Jericho Tsai

TI__Guru 55940 points

We will try to replicate your waveform.

Are the only conditions that you tried the 1s and 30ms durations?

Very Respectfully,

Ryan

0 Jericho Tsai over 8 years ago in reply to Ryan Eslinger

Intellectual 380 points

Hi Ryan,

Customer ON/OFF condition is 1mS~1S duration.

Is TPS3701 can support it?

Thanks

Power management

Power management forum

TPS3701 respond time issue??