Re: How to simulate the gate charge characteristic given in the datasheet of a mosfet?
Dear Dennis, A very good day to you. You are a gem of a teacher, sir. While we do not know each other, still, you are my guru. I am grateful for your kindness. I will definitely acknowledge you in my
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ankitk.ace@...
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#159693
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Re: How to simulate the gate charge characteristic given in the datasheet of a mosfet?
Excellent work. This comment from me, below, affects only few of you, so most of you can ignore it. The simulation has considerable "Trap Ringing" (or "Trap Oscillation") at the MOSFET's drain current
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Andy I
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#159692
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Edited
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Re: How to simulate the gate charge characteristic given in the datasheet of a mosfet?
On page 4 of this whitepaper ( How to interpret SiC MOSFET datasheet parameters (
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Dennis
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#159691
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Edited
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Re: LTspice Help
Sounds like your installation went sour, or that your computer is not set up to display HTML correctly.? I think it should have gone to your web browser, not to Notepad.? Maybe your computer has the
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Andy I
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#159690
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LTspice Help
Hi, I tried to access LTspice Help Menu this morning to check the syntax of a Directive, but found that? Help on the top bar of LTspice (left clicking on LTspice Menu)? opens a Notepad file with the
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tinkera123
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#159689
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Re: How to simulate the gate charge characteristic given in the datasheet of a mosfet?
Hi Andy, My mistake, I expected that there would be a time frame on Temp files, but I missed the fact that the original Messsage was 2023 ... thanks again for your Help. Cheers, Ian
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tinkera123
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#159688
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Re: How to simulate the gate charge characteristic given in the datasheet of a mosfet?
Ian, The "Temp" folder name means "Temporary".? Files in the "Temp" folder are there only temporarily, not permanently.? Those files from this topic were uploaded to the "Temp" folder ages ago -
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Andy I
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#159687
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Edited
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Re: How to simulate the gate charge characteristic given in the datasheet of a mosfet?
Hi Andy I, Yes, that was one of the Files I was searching for .... mosfet_gate_charge.zip and it has just appeared. However, the following files haven't are not in the Temp folder (that I can see).
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tinkera123
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#159686
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Re: How to simulate the gate charge characteristic given in the datasheet of a mosfet?
Ian, Maybe you were looking for the file "mosfet gate charge.zip" that Ankit mentioned yesterday in message # 159674 ( /g/LTspice/message/159674 ). I have just moved that file back to
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Andy I
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#159685
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Re: How to simulate the gate charge characteristic given in the datasheet of a mosfet?
Just what files were you looking for? Andy
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Andy I
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#159684
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Re: How to simulate the gate charge characteristic given in the datasheet of a mosfet?
Hi all, Mmmm .... I can't find any of these files. I'm in /g/LTspice/files/Temp ( /g/LTspice/files/Temp ) no files starting with Gate? or? mosfet (
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tinkera123
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#159683
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Re: How to simulate the gate charge characteristic given in the datasheet of a mosfet?
A very clear explanation.
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John Woodgate
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#159682
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Re: How to simulate the gate charge characteristic given in the datasheet of a mosfet?
Dear Dennis, Thank you so very much for such an insightful and beautiful explanation. I will be under your debt forever. I have a follow-up query though and it is as follows: You mention>> " *I think
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ankitk.ace@...
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#159681
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Re: How to simulate the gate charge characteristic given in the datasheet of a mosfet?
I think I should point out that the pulse duration is not important for this test in a simulation. It is important for real parts that dissipate power during the test to ensure they do not overheat.
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Dennis
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#159680
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Re: How to simulate the gate charge characteristic given in the datasheet of a mosfet?
I don't think there is anything foolproof but I will try to explain the working of the circuit. It applies a constant current to the gate of the MOSFET. The x-axis displays the product of that
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Dennis
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#159679
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Re: Simulation runs very slowly: test.asc
When I adapt models with bad diodes, I replace the diodes with LTspice diode.
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§¡§Ý§Ö§Ü§ã§Ñ§ß§Õ§â §¢§à§â§Õ§à§Õ§í§ß§à§Ó
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#159678
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Re: Simulation runs very slowly: test.asc
Actually, these messages are a red flag. They mean that your model might not work as expected. Model makers frequently resort to diodes with very small emission coefficients in order to create diodes
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Mathias Born
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#159677
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Re: Simulation runs very slowly: test.asc
Ah, Rene. Welcome to planet engineering, where ambiguity is less than useful. Andy provided a clear example of how d/s might be otherwise interpreted, which ambiguity would have been easily avoided by
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Donald H Locker
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#159676
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Re: Simulation runs very slowly: test.asc
I fixed that in in the updated model. Christopher saw it again because the hard-coded symbol overrode the .lib directive. -- Regards, Tony
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Tony Casey
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#159675
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Re: How to simulate the gate charge characteristic given in the datasheet of a mosfet?
Hello Dennis, Thank you so very much for sharing your mosfet gate charge ( /g/LTspice/files/z_groups.io/Files-sorted-by-message-number/msg_ZZZZZZ/mosfet%20gate%20charge.zip ) file. It
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ankitk.ace@...
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#159674
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