TPD12S016:Does the operating free-air temperature only note the ambient temperature?

Hello Kuno-san,

Your answer that it is important to be below the junction temperature helps me.

Can you publish the junction temperature of this device to me?  As the TPD12S016 has few power-consuming parts, the junction will never reach 125°C in our operating environment. However, evidence of junction temperatures strengthens the assurance in my design.

And according to Datasheet 6.5 Electrical Characteristics, the thermal shutdown trip point is 140°C, so the junction temperature limit may be 150°C.

Best Regards,

Yukio Oyama

Hello Kuno-san,

It is considered safe as Tj = 125°C is never exceeded in my application.

This is out of line with the question for this product, but I had assumed that thermal shutdown would be triggered at temperatures lower than Tj. However, according to your description, the thermal shutdown is at a temperature higher than Tj.

Can you tell me on what idea the thermal shutdown temperature is set higher than Tj? I was thinking that the temperature at which thermal shutdown is triggered has to be lower than Tj to cause damage to the chip

Best Regards,

Yukio Oyama

Hello Kuno,

Well, I have understood that there are two types of junction temperatures to consider: recommended operating conditions and absolute maximum ratings. And that the maximum temperature of the storage is likely to be tied to the absolute maximum rating of Tj, so the device triggers a thermal shutdown to avoid exceeding it?

Best Regards,

Oyama Yukio