TPS25924: TPS259241 output short circuit

Shuji Ishiwata

Part Number: TPS25924

Hi All,

I have a question about TPS259241.

TPS259241 is an Auto retry product, will the device shut down if there is a output short circuit?
Or will it return automatically?

Best Regards,
Ishiwata

11 months ago

0 Rakesh 11 months ago

TI__Guru** 104881 points

Hi Ishiwata,

Thanks for reaching out!

The device will do auto-retry for overload and short-circuit fault

https://www.ti.com/lit/ta/ssztb89/ssztb89.pdf?ts=1706242632208&ref_url=https%253A%252F%252Fwww.google.com%252F provides some more information

BR,

Rakesh

0 Shuji Ishiwata 11 months ago in reply to Rakesh

Mastermind 6675 points

Rakesh-san,

Thank you for your reply.

There was no significant short-circuit operation in the materials I received.
The graph below in the data sheet does not recover automatically.

I think it will not automatically recover if there is a short circuit, is my understanding correct?

Best Regards,
Ishiwata

0 Rakesh 11 months ago in reply to Shuji Ishiwata

TI__Guru** 104881 points

Hi Ishiwata,

In Figure 32, the current limit is at lower value (~1A) so the device is still in current limit region and takes more time to hit thermal shutdown (TSD). Once it hits TSD, it retries in 100us.

In Figure 34, the current limit is at higher value (3.5A) and you can see auto-retry behavior.

BR,

Rakesh

0 Shuji Ishiwata 11 months ago in reply to Rakesh

Mastermind 6675 points

Hi Rakesh,

Thank you for your answer.

Can you think of any behavior that would cause TPS259241 to latch off?
A customer reported that the TPS259241 stopped outputting when noise was applied.
I'm looking for a reason to stop.

Best Regards,
Ishiwata

0 Rakesh 11 months ago in reply to Shuji Ishiwata

TI__Guru** 104881 points

Hi Ishiwata,

Any condition which can cause electrical overstress (EOS) on the device (for example exceeding the abs max spec on VIN or VOUT) would cause the device to latch-off.

Does the device restart if you do power cycling?

Best Regards,

Rakesh

Power management

Power management forum

TPS25924: TPS259241 output short circuit