Hi Team,
i got this request from a customer:
I’m trying to do is to use two independent parallel circuits supplied from the same 15V source, but with common RC network to hopefully synchronize their operation.
The specification does not mention anything about the possibility of synchronization, but I would like to understand why this scheme does not work.
In order synchronize the operation of two UC2843 I thought it should be possible to use a common RC connected to RT/CT of both chips. Unfortunately it does not work like this.
In this case one of the chips outputs the PWM and the other outputs OV. I can’t understand why this happens considering that all other inputs are identical. What determines which chip operates and which does not?
Could you please comment in that?
Best Regards,
Alex