MOSFET temperature measurement on PCB

Thread Starter

bunnysai

Joined Mar 7, 2016
4
Hello professionals,

in my project, I have to measure the temperature on MOSFET's in bridge driver in BLDC motor application. Can you please tell me in which way I can do it and How will be the charactristic curve between?


Thanks
 

Thread Starter

bunnysai

Joined Mar 7, 2016
4
That's what my first thought was - attach an LM35 to the MOSFET. Of course that may change the temperature a little.
I have the temperature sensors and display to see the temp readings on all MOSFET's. Can I know how will be the characteristic between? (should be between temp and time or what)
 

wayneh

Joined Sep 9, 2010
16,102
I don't understand what you are asking. You can refer to the data sheet to learn the maximum temperature operating parameters.
 

Alec_t

Joined Sep 17, 2013
10,376
Why do you have to measure the temperature? If a FET is too hot to keep your finger on it then it probably needs a bigger heatsink or is being asked to pass too much current.
 

MrAl

Joined Jun 17, 2014
6,500
Hi,

Can you use an IR temperature gun?
I've done that with power resistors. If you dont need super duper accuracy it works.
 
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