TPS2051B: OC pin question

AJ Cheng

Genius 3615 points

Part Number: TPS2051B
Other Parts Discussed in Thread: TPS2051

Dear Sir.

We use TPS2051B. Measured TPS2051B when the power supply (VIN) is started.

OC pin will have 65us low signal. Is this OC pin low level internally issued?

If so, can I ignore this signal? Thanks for help~

over 6 years ago

0 Ziv Zhang over 6 years ago

TI__Mastermind 18031 points

Hi AJ,

Is this issue influence the system normal function? Can use the software to ignore this pulse?

I look up the TPS2051 datasheet on Page15:

You can also add the RC filter to eliminate the pulse.

If any, contact me any time.

If you think this resolve your question, please help click 'Issue is resolved' button.

Thanks.

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

Genius 3615 points

Dear Ziv.
Good day.
We are using TPS2051B. But you are providing TPS2051 SPEC.
We need to know is this phenomenon normal? Thanks for kindly help~

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

TI__Mastermind 18031 points

Hi AJ,

In our spec TPS2065B, we only make sure the OC assert at overcurrent and over temperature condition.

For other condition, we don't guarantee that.

I think the phenomenon is bnormal. And still need to validate on our EVM to confirm that.

I am out of office today and will reply to you soon.

Thanks.

Ziv

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

Genius 3615 points

Dear Ziv.
Good day.
Waiting for your reply. Thanks for kindly help~

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

TI__Mastermind 18031 points

Hi AJ,

I test TPS2051BDBV on the bench.
And do see the similar phenomenon.
Does the pulse influence your application?
If so, I think you can use the software to ignore the pulse.
Or you can refer to the method just like TPS2051.
If any, contact me any time.

If you think this solve your issue, please click the 'Issue is solved' button.
Thank you.

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

Genius 3615 points

Dear Ziv.

Good day.

I will suggest customers to solve this problem by software. Thanks for kindly help~

Power management

Power management forum

TPS2051B: OC pin question