Power supplies examples

maverick_123 · 19th November 2007, 09:44 PM

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

Hi

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

http://www.diyaudio.com/forums/showt...93#post1355993

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.

19th November 2007, 09:44 PM	#1
maverick_123 diyAudio Member Join Date: Sep 2007	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.

20th November 2007, 06:36 AM	#2
luka diyAudio Member Join Date: Sep 2005 Location: in Slovenia :)	Hi 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. __________________ home page @ http://www.classdaudio.co.cc @ 24/7 all year long I FEEL SLOVENIA

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20th November 2007, 02:08 PM	#3
KOON3876 diyAudio Member Join Date: Nov 2006	http://www.diyaudio.com/forums/showt...93#post1355993 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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