class d amplifier current output

Hi,
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 1Arms
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?

Could you help me?

Thanks.