I'm designing a class d amplifier with current feedback as in figure below
with the following features:
- Vbus=50V
- Iout programmable from 100mA to 1A rms
- Vout=35Vrms max
When the load overcomes the programmed current (i.e. 1Arms) the amplifier saturates and the sinusoidal output becomes a square wave output. For example i want to transmit on 1200 ohm a 35Vrms sinusoidal voltage even though the current feedback is not locked.
So my purpose is to mantain a maximum allowable voltage on the output.
Is it possible to obtain that feature? A second feedback is needed?
