PWMSim

LTspicePowerSim

LLC resonant converter — fixed frequency

LTspicePowerSim's 400 V LLC converter, its bridge held at the frequency its loop runs at.

Open and simulate
Press Run: the example simulates in your browser. Open and simulate takes it to the full app, where you can change it.

Try this

Raise the switching frequency to 130 kHz and watch the resonant current's swing halve. Then press Run again.