WEBENCH® Tools/UCC25600: OCP

woo hyun kim

Part Number: UCC25600

Tool/software: WEBENCH® Design Tools

Brian Hello ~
Thank you for your reply.

I do not wanna be a latch on overcurrent protection.

Is OCP a Hiccup Mode? Or Current Limit?

During the test,

On-off operation time of over current protection becomes faster and on-off operation is stopped at short time.
(Current Limit)

What OCP behavior is correct?

Is it possible to keep on-off at regular intervals during over-current protection?

I do not know if Google translates correctly ...
please answer about my question...
Thank you.

over 8 years ago

0 John Stevens over 8 years ago

TI__Expert 7395 points

Woo Hyun,

Thanks for your interest in TI here. I've contacted the appropriate product group. You should hear from them soon.

Regards

John

0 Brian Johnson96 over 8 years ago in reply to John Stevens

TI__Expert 3200 points

Woo Hyun,

I have assigned an AE to help you on this E2E. I see it is a duplicate, please do not add another E2E thread but keep to the same thread in order to help me track progress on your request.

0 Yunsheng Qu over 8 years ago

TI__Genius 9790 points

Hi, Woo hyun

Below is OC protection feature of UCC25600.

When the voltage on this pin is above 1 V, gate driver signals are actively pulled low. After the voltage falls below 0.6 V, the gate driver signal recovers with soft-start. When OC pin voltage is above 2 V, the device is latched off. Bringing VCC below the UVLO level resets the overcurrent latch to off.

Regards,

Yunsheng

0 woo hyun kim over 8 years ago in reply to Yunsheng Qu

Prodigy 150 points

Hello, Yunsheng
Thank you for your reply.
I will ask you two more question.

1) What happens to OCP mode when UCC25600 VCC power is supplied from the outside?

2) When you see the main waveform with an oscilloscope, the first waveform is clean and the second waveform seems to be slightly oscillating, right?

Thank you.

0 Yunsheng Qu over 8 years ago in reply to woo hyun kim

TI__Genius 9790 points

Hi, Woo hyun

1. the OCP mode is not related to VCC supply method.
2. I am not clear about your second question, could you attach a waveform to explain?

regards,
Yunsheng

0 woo hyun kim over 8 years ago in reply to Yunsheng Qu

Prodigy 150 points

Hello, Yunsheng

Please let us know your email address and we will send it to you.

I do not know how to upload a file.

Thank you.

0 Yunsheng Qu over 8 years ago in reply to woo hyun kim

TI__Genius 9790 points

Hi,

yunsheng-qu@ti.com is my email.

Yunsheng

0 woo hyun kim over 8 years ago in reply to Yunsheng Qu

Prodigy 150 points

Hi,
I have sent the material to the email address you provided.
Thank you.

Power management

Power management forum

WEBENCH® Tools/UCC25600: OCP