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Anonymous Poster #1

How to Calculate IGBT Power Loss?

01/28/2021 1:07 PM

How to calculate IGBT power loss?

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#1

Re: How to calculate IGBT power loss?

01/28/2021 2:02 PM

..."The turn-on, conduction and turn-off losses make up the sum of the losses for the IGBT die. The off-state losses are negligible and do not need to be calculated. To calculate the total power loss for the IGBT, the sum of the three energies must be multiplied by the switching frequency... The IGBT losses must be measured with a resistive load or during a portion of the cycle where the load is consuming power. This eliminates the diode conduction."...

https://www.onsemi.com/pub/Collateral/AND9140-D.PDF

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#2
In reply to #1

Re: How to calculate IGBT power loss?

01/28/2021 2:05 PM

That 'bout covers it. Not much else to say with the information contained within the request.

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#7
In reply to #1

Re: How to calculate IGBT power loss?

02/14/2021 12:47 AM

Hello SolarEGALE , How life treat you. long Time no see, I glad to see you my freind. I just read your good answer #1. You are a great personne and the way you abel to explain your self , it is so easy to folow and specialy understand what you say un wrighting . This is talent, be abel to comunicate at this level. IT is complex subject basicly all time. Anyway we got a great time back then. Hope is the same for you. OOF topic, but I juste whant say hello to a Friend sincères amitiés Philippe Martin

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#3

Re: How to calculate IGBT power loss?

01/29/2021 2:15 AM

Input = output + dissipation

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#4

Re: How to calculate IGBT power loss?

01/29/2021 2:25 AM

Pocket calculator.

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#5

Re: How to Calculate IGBT Power Loss?

01/29/2021 7:41 PM

Refer to the manufacturers data sheet and application notes, they have tested all manner of parameters and tabulated the results for your reference.

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#6

Re: How to Calculate IGBT Power Loss?

01/31/2021 10:15 AM

There is some detailed information here. Power is calculated for conduction and switching loss for both IGBT and freewheeling diode using datasheet parameters.

https://www.element14.com/community/servlet/JiveServlet/download/20553-1-3493/IGBT%20Power%20Losses%20Calculation%20using%20the%20Data%20Sheet%20Parameters.pdf

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