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Make your own giant mosfet
SiliconWizard:
--- Quote from: Gyro on July 26, 2020, 07:37:24 pm ---
--- Quote from: SiliconWizard on July 26, 2020, 07:19:44 pm ---This thing is actually a module made of several IGBT transistors. We were kind of talking about single transistors - at least I was - since that was compared to some DIY module made of several MOSFETs. So, that's just a module too. And that's why I mentioned one of the beefiest, yet single discrete MOSFET transistors I could find. Finding off-the-shelf, single IGBTs with those specs is harder.
--- End quote ---
You rapidly reach the point where it's cheaper and much higher yield for manufacturers to put multiple dies down in a package rather than a single very large die. You run into major problems with bond wires when they get too big too. Just look at an electric car inverter teardown.
--- End quote ---
Oh, that's completely right.
But still, those beefy IGBTs are fricking expensive.
daqq:
MOSFET modules where you get a lot in series/parallel are a thing, but for a bit of a different target application. See:
http://www.behlke.com/separations/separation_c1.htm
For instance:
http://www.behlke.com/pdf/331-06.pdf
Note the rise time.
edit:
--- Quote from: SiliconWizard on July 26, 2020, 07:49:33 pm ---
--- Quote from: Gyro on July 26, 2020, 07:37:24 pm ---
--- Quote from: SiliconWizard on July 26, 2020, 07:19:44 pm ---This thing is actually a module made of several IGBT transistors. We were kind of talking about single transistors - at least I was - since that was compared to some DIY module made of several MOSFETs. So, that's just a module too. And that's why I mentioned one of the beefiest, yet single discrete MOSFET transistors I could find. Finding off-the-shelf, single IGBTs with those specs is harder.
--- End quote ---
You rapidly reach the point where it's cheaper and much higher yield for manufacturers to put multiple dies down in a package rather than a single very large die. You run into major problems with bond wires when they get too big too. Just look at an electric car inverter teardown.
--- End quote ---
Oh, that's completely right.
But still, those beefy IGBTs are fricking expensive.
--- End quote ---
Define beefy and expensive - this fella:
https://ie.farnell.com/infineon/fz600r12ke3hosa1/transistor-igbt-module-1-2kv-900a/dp/2726202
switches over 1MW and costs around 120 EUR @ single piece. The bang per buck is insane in my opinion.
Syntax Error:
I've thought that a thunder cloud (CuNb) works just like a giant Mosfet; with accumulation and depletion zones, and a 'gate' mechanism that allows 10,000+ amps to flow. Any semiconductor experts care to vehemently disagree in a green comic sans font?
jpanhalt:
Just another hideous YT "DIY" fake. The music is even worse. Mosfets have been paralleled since they were fist invented. Potting them in plastic is just plain...
tooki:
--- Quote from: jpanhalt on July 26, 2020, 09:28:11 pm ---Just another hideous YT "DIY" fake. The music is even worse. Mosfets have been paralleled since they were fist invented. Potting them in plastic is just plain...
--- End quote ---
And he uses that same looped music in every single one of his videos. Oh, and the guy is Vietnamese, not American, making the channel name perplexing, too.
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