Simple implementation of a variable peak sawtooth generator?

Question

I want to implement a fixed-frequency sawtooth generator with a peak voltage (V_pk) that I can control using an external variable (V_x). I created a simple circuit using a voltage controlled current source, a capacitor, and a reset switch like the figure below. However, this circuit increase the single simulation time from 0.2 second to 2.7 second. The time factor is important for me because I am doing thousands of simulation runs (optimization loop).

Is there a simpler and faster way to implement this variable-peak sawtooth generator (ideal ways are ok)?

Thanks

Answer 1

You can use a Triangular Wave Generator with a ramp between 0-1.  Then multiply the output Vx.  Placing a zero-order hold after Vx ensures the ramp peak is only updated on the carrier minimum.  See the attached model.