LM5013: LM5013

Serhii Lozhechka

Prodigy 10 points

Part Number: LM5013

Tool/software:

Dear colleagues.

Could you help me with the following question.

What is the thermal shutdown value for the next design?

I have a device that powered by LM5013:

Vinput = 57V

Vout=5V

Iout=1A

The ambient temperature is 85 degrees celcius.

Thank you in advance.

8 months ago

0 ARPITA NATH 8 months ago

TI__Expert 6382 points

Hello Serhii,

If the junction temperature exceeds 175°C (typical), thermal shutdown occurs to prevent further power dissipation and temperature rise. The LM5013 initiates a restart sequence when the junction temperature falls to 165°C, based on a typical thermal shutdown hysteresis of 10°C, which is a non-latching protection, so the device cycles into and out of thermal shutdown if the fault persists. Please refer to datasheet section 8.3.11, 9.4.2.1.

Regards

Arpita

0 Serhii Lozhechka 8 months ago in reply to ARPITA NATH

Prodigy 10 points

Hello Arpita.

Thank you for your reply.

Maybe I was unclear about the question.

So What will be temperature of IC in conditions that I have mentioned previously.

Is it possible to simulate it some how ?

0 ARPITA NATH 8 months ago in reply to Serhii Lozhechka

TI__Expert 6382 points

Dera Serhii,

I will check this query and get back to you. I am out of office so please expect some delay in response.

+1 Serhii Lozhechka 8 months ago in reply to ARPITA NATH

Prodigy 10 points

Thank you for help.
I have figured it out myself.
For more details look at the following link
https://www.ti.com/lit/an/snva951/snva951.pdf?ts=1734801738086

Have a nice day.

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LM5013: LM5013