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PAC is giving 0V at the output

SA202512302438

I have designed a simple rectifier with a switch (switch from analogLib) that turns on when the output voltage (v_load) intersects the AC signal and and turns off when the signal from PWM generator (implemented as a vcvs comparator, comparing a ramp signal and a dc signal - v_cntrl) is low. PSS gives steady state waveforms as expected. However, PAC gives 0V at v_load. For PAC the source V_cntrl has its PAC magnitude set as 1.

Circuit schematic

Switch schematic

PSS time waveforms

Tools:
Spectre (R) Circuit Simulator
Version 23.1.0.362.isr5 64bit -- 26 Jan 2024

  • SA202512302438

    The voltages obtained at various nodes in the circuit after PAC are below

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