Hello. I am a new in audio schematic, so if it looks stupid tell me.
I want to build a Class-D audio amplifier on a TL494. I used the first scheme and modified it a bit. What do you think of the second scheme??
I want to build a Class-D audio amplifier on a TL494. I used the first scheme and modified it a bit. What do you think of the second scheme??
The first is a non-isolated synchronous buck converter that maybe adapted for AC output if operated from a dual supply, which is quite straightforward. However, the second one is a push-pull SMPS that may not operate satisfactorily as a switching amplifier due to ferrite-induced distortion. Further, there is also the problem of "flux walking" that is inherently present in a push-pull topology unless current control is used.
So, it is my opinion that you stick to the first idea with either a dual supply or a full-bridge topology to avoid the transformer altogether. Also, the newer IRF540N (vs. IRF540) maybe better suited for this purpose.
D
Deleted member 550749
I think I have seen somewhere, that's not a regular buck converter transformer, something different type of transformer is that, shape is like - rectangular like relay switch, and has lots of pins , besicaly u can see that Pc motherboard , specially made for switching high frequency, don't know is that true or I m wrong, but trust me I have seen that transformer, and thos transistor r actually helps to switch more fast with more voltages, yes that configuration used for switching more faster if there switching loss happening, it's reliable schematic but total cost wilbe the of 3116 ready board 🤣🤣🤣