TPSM8D6C24: Temperature versus Current derating for 4-phase applicaton

JH Shin

Part Number: TPSM8D6C24

Hello,

Could you please provide a chart or some data on temperature versus current derating for TPSM8D6C24 4-phase applicaiton?

Thank you.

over 2 years ago

0 Peter James Miller over 2 years ago

TI__Guru 55230 points

JH Shin

Is there a specific application and environmental condition you are looking for?

0 JH Shin over 2 years ago in reply to Peter James Miller

Guru 10160 points

Hi Peter,

Thanks for your help.

Here's my customer's use case:

Vin = 12V
Vout = 0.85 or 1V
Iout = typ 80A , max 90A
Windless

Regards,

0 Peter James Miller over 2 years ago in reply to JH Shin

TI__Guru 55230 points

JH Shin

Thank you, let me see what data we have.

0 Peter James Miller over 2 years ago

TI__Guru 55230 points

JH Shin,

Unfortunately, I don't have a full curve, But for 12V input / 1V output, 4-phase at 90A, the expected Ambient to Die temperature rise is 88 degrees. That is based on 7W power dissipation per 2-phase device supporting 45A. At 80A load current, the calculated temperature rise is 60C.

The TPSM8D6C24 is rated for -40°C to +125°C operating junction temperature and -40°C to +150°C Maximum Junction Temperature, though TI does not recommend operating the TPSM8D6C24 over 105C ambient air temperature.

Power management

Power management forum

TPSM8D6C24: Temperature versus Current derating for 4-phase applicaton