Two of the same PWM IC's in the same circuit

Thread Starter


Joined Mar 1, 2017
Is it common to have more than one of the same IC chips (KA3525) in the same circuit?

I have a simple 300watt DC to AC inverter that utilizes a KA3525 PWM IC, a KA324 OP Amp and another IC that has the face scratched off but in the schematic it seems to have the same connections as the KA3525.

I guess all I'm asking is if this seems common or unusual to have two of the same PWM controllers in a DC to AC inverter circuit



Joined Aug 7, 2020
I've seen 12V DC to 230V AC inverters with 5 push-pull stages running in parallel stepping 12V up to 325V DC bus.