Hi Guys,
I really need help for designing my project, which is designing a 10-15w class d amplifier feeding with a battery. I have designed my project with 2 tl082CN for triangular wave oscillator(~125kHz), 1 lm339n comparator , 1 tc4420 and 1 tc4429 gate driver and 2 mosfets(irf23BD..) and an output filter of 20 kHz low pass. I am supplying +-10V to the drain and source of the mosfets and + 5 v for the gate drivers. But unfortunately, I have some heat problems for mosfets ans I could not get the required power. Could you please hel me to solve the problem?
Thanks
I really need help for designing my project, which is designing a 10-15w class d amplifier feeding with a battery. I have designed my project with 2 tl082CN for triangular wave oscillator(~125kHz), 1 lm339n comparator , 1 tc4420 and 1 tc4429 gate driver and 2 mosfets(irf23BD..) and an output filter of 20 kHz low pass. I am supplying +-10V to the drain and source of the mosfets and + 5 v for the gate drivers. But unfortunately, I have some heat problems for mosfets ans I could not get the required power. Could you please hel me to solve the problem?
Thanks
Sorry for late answer. Here is my design schematic.
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design Pictures, design Images, design Photos, design Videos - Image - TinyPic - Free Image Hosting, Photo Sharing & Video Hosting
Sorry for late answer. Here is my design schematic.
design Pictures, design Images, design Photos, design Videos - Image - TinyPic - Free Image Hosting, Photo Sharing & Video Hosting
you don't have level shift, dead time adjust, D1 and D2 are placed in the wrong place, you don't have floating drive to drive the mosfets.
look for a funtional schematic iraudamp for example to get some idea about class D.
Best regards,
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