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Class D Switching Power Amplifiers and Power D/A conversion

Class D help
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Old 10th February 2015, 12:15 AM   #1
kiermee is offline kiermee
diyAudio Member
 
Join Date: Jan 2010
Default Class D help

Hey everyone I need some help on an amplifier if possible please. It's a standard class d using 20955 driver and two 4229 mosfets. Problem I am getting the amp blew the mosfets at first. I checked through cct replaced gets and 20955. Unit powers back up but with no load mosfet 1 gets hot if signal is applied and blows. Mosfet 2 is ok. I am missing something here. Anyone can assist with troubleshooting. Thanks.
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