TPS2553: Output Short to ground

[FAE] Andrew Wang

Part Number: TPS2553

Hi Team,

When TPS2553 output short to ground, I don't understand why the actual waveform at FAULT pin doesn't match to our datasheet?

I thought FAULT should stay LOW forever until output short remove, am I right? But as you can see the picture below, it only stay LOW for 100uS and pull HIGH. Something wrong with the schematics? Thanks for checking.

Andrew

over 6 years ago

0 [FAE] Andrew Wang over 6 years ago

TI__Genius 10685 points

Hi Team,

This is very urgent case, customer is going to submit layout by end of next week, thanks a lot for quick feedback!

Andrew

0 Ziv Zhang over 6 years ago in reply to [FAE] Andrew Wang

TI__Mastermind 18031 points

Hi Andrew,

I think customer wants to use the auto-retry function with external EN signal?

You can refer to Fig 28 on datasheet of TPS2553Q1.

Make sure your connection is right. And auto-retry function means re-start and fault is sure will re-start also.

If you have any other concern, contact me any time. If in emergency, email to me. a0224015@ti.com

If you think resolved, please help click'Issue is solved button'.

Thanks.

0 Ziv Zhang over 6 years ago in reply to Ziv Zhang

TI__Mastermind 18031 points

Hi Andrew,

As talked by email, I will first click resolved button.

If you have any other concern, contact me any time.

If you think resolved, please help click'Issue is solved button'.

Thanks.

Power management

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TPS2553: Output Short to ground