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Old 16th September 2004, 07:31 AM   #1
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Question IGBT amp and SPICE models

I'm looking at designing a high power linear amp using IGBTs. The ones I find use complimentary IGBTs. Any ideas on using ONLY n-channel IGBTs in the output stage? I'm looking for IGBT spice models as well.
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Old 17th September 2004, 12:57 PM   #2
MikeB is offline MikeB  Germany
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Hi !

If you are looking for PSpice models take a look to:

http://www.duncanamps.com/
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Old 17th September 2004, 01:45 PM   #3
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You can use N-channel only devices quite successfully in a circlotron topology. Don't forget though that compared to a mosfet of equal voltage and current rating, an IGBT has a die of less than 1/6 the size e.g an IRG4PC40S 600v 40 amp device has about a 4mm x 4mm die IIRC. An IRFP460 rated at 500V 20A has a die about 3 times the area. This translates into a much greater safe operating area and dissiaption rating - just the thing you want for an amplifier.
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