• Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

Temperature with heatsinkcalculator software

Status
Not open for further replies.

mading2018

Member
Hello :happy:,

I have in the recent days tried to simulate the temperatures levels in a charger (AC/DC-module) in a Heatsinkcalculator software:
https://www.heatsinkcalculator.com/version-2-1/demo-calculator.html

Based on the power losses calculations for half-bridge, where we have two MOSFETs that are operating one at the time,
where one MOSFET have 18.47 W in power losses.

The question is: should the MOSFETs in the heat sink simulation have total power loss value: 18.47 W each? or should it be 9.23 W each?

Thank for all help I can get.
 

Attachments

crutschow

Well-Known Member
Most Helpful Member
If that 18.47W is the average of each MOSFET's power dissipation calculated over a complete cycle, then the total heatsink dissipation will be twice that.
 

gophert

Well-Known Member
Most Helpful Member
Hello :happy:,

I have in the recent days tried to simulate the temperatures levels in a charger (AC/DC-module) in a Heatsinkcalculator software:
https://www.heatsinkcalculator.com/version-2-1/demo-calculator.html

Based on the power losses calculations for half-bridge, where we have two MOSFETs that are operating one at the time,
where one MOSFET have 18.47 W in power losses.

The question is: should the MOSFETs in the heat sink simulation have total power loss value: 18.47 W each? or should it be 9.23 W each?

Thank for all help I can get.
Is the 18.47 W for mosfet only when it is in the ON state or is it the average of the full cycle?
 
Status
Not open for further replies.

Latest threads

EE World Online Articles

Loading
Top