5/26/2023 0 Comments Tda7293 parallel circuit layout![]() In the instant I turned on power, both chipamps literally exploded, meaning they blew off part of the black cover of the IC. I have shorted the audio input signal to ground. On the first try I had both TDA7293 chips soldered to the board. Now the problems started when I first turned on my amplifier board. The power supply is a 24-0-24V toroidal transformer with a rectifier board attached to it (which did not have any problems and has worked perfectly fine from the beginning). ![]() I have also attached an image of my PCB layout. Capacitor C3 polarized in wrong direction as well ![]() Capacitors C10 and C10P1 (1000u smoothing caps in negative supply rail) are polarized in the wrong direction, have turned them around on PCB Please be aware, that I have already figured out and fixed the follow mistakes made: I have attached my circuit diagram to this post. The circuit I chose to use is a dual TDA7293 parallel design. About 2 months ago I decided to take on the project of designing my own amplifier which is supposed to be driving my subwoofer in the future.
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