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maverick_123 19th November 2007 09:44 PM

Power supplies examples
hi everyone,

I'am doing a Class D project and interested to see examples on the power supply examples. I'am designing for the mosfets.
I'am thinking about deliever about +/- 50V to get around 100-150
Watts out.

Thanks again.

luka 20th November 2007 06:36 AM


Would be nice if you would post this in Power Supply section, Hope that this thread will be move there...

So about your question... First where will you use your amp (car, or home...)? If car then you will probably go with push-pull, if for home then you have flyback, halfbride, forward converter... lot of them.

KOON3876 20th November 2007 02:08 PM

Hi also I'm thinking to try analog discrete power supply to full digital amplifier.
there are "positive side" schematic and inverting PNP->NPN, NPN->PNP can make "negative side". Power Tr can be changed to MOSFET.

when source voltage = 55V and output voltage=50V, output current = 3A, (150W) MOSFET power loss = 15W. so you need large heat sink.

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