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An LTspice schematic opens in the browser as it was drawn, runs, and agrees with LTspice's own run of the same file.
Examples
Each one opens in the app and runs. Change a value and run it again.
Buck converter — CCM
A simple step-down converter with continuous inductor current.
Boost converter — CCM
A 2.5 V to 3.3 V step-up converter with continuous inductor current.
Flyback converter — CCM
A 48 V isolated flyback converter with continuous inductor current.
Flyback — turns ratio and load
A flyback converter for testing transformer ratio and output load separately.
PI buck — 5 V regulation
A 12 V to 5 V buck with a sampled PI voltage controller.
PI buck — line and load steps
A controlled buck responding to input-voltage and load changes.
Hysteretic buck
A comparator-controlled buck with a variable switching frequency.
Peak current-mode buck
A buck that turns its switch off when inductor current reaches the set value.
Peak current-mode buck — command and load
A peak-current buck for testing current command, load, and slope compensation.
Diode reverse-recovery pulse
A detailed diode model switching from forward current to reverse voltage.
IGBT clamped inductive switching
One hard-switching event with an inductive load and voltage clamp.
Thyristor latching load switch
An SCR switched on into a resistive load and kept above its holding current.
Saturable inductor knee
A magnetic-core inductor driven into saturation.
DC motor start-up
A brushed DC motor showing startup current and rising back-EMF.
Synchronous buck — PI regulation
LTspicePowerSim's 5 V to 1 V synchronous buck, its compensator and PWM block replaced by a PI-controlled switch.
Boost — PI regulation
LTspicePowerSim's 2.5 V to 3.3 V boost, regulated by a PI-controlled switch.
Buck — peak current mode with PI loop
LTspicePowerSim's peak current-mode buck, its comparator, latch, slope and compensator as one switch.
Boost — peak current mode with PI loop
LTspicePowerSim's 3 V to 5 V current-mode boost, its control loop as one switch.
SEPIC — peak current mode with PI loop
LTspicePowerSim's 3 V to 5 V SEPIC under peak current-mode control with a voltage loop.
Dual active bridge — phase shift
LTspicePowerSim's 400 V to 350 V dual active bridge, its phase-shift block replaced by phased PWM switches.
CLLC resonant converter — fixed phases
LTspicePowerSim's bidirectional CLLC, both bridges switching at fixed phases.
2:1 switched-capacitor ladder
LTspicePowerSim's 2:1 ladder, halving 10 V with one flying capacitor.
Three-level buck — peak current mode
LTspicePowerSim's flying-capacitor buck, its two switch pairs clocked half a period apart under peak current control.
Four-phase buck — peak current mode
LTspicePowerSim's four-phase 4 A buck, its phases a quarter period apart under one current command.
Active-clamp forward — PI regulation
LTspicePowerSim's 200 V to 12 V active-clamp forward, its current-mode loop and dead-time block replaced by a PI switch and its complement.
Active-clamp flyback — PI regulation
LTspicePowerSim's 24 V to 5 V active-clamp flyback, its clock, latch and dead-time blocks replaced by a PI switch and its complement.
Phase-shifted full bridge — fixed phase
LTspicePowerSim's 400 V to 12 V phase-shifted full bridge, its legs held at the phase its loop settles to.
LLC resonant converter — fixed frequency
LTspicePowerSim's 400 V LLC converter, its bridge held at the frequency its loop runs at.
2:1 resonant switched-capacitor ladder — fixed phase
LTspicePowerSim's resonant 2:1 ladder, its two switch pairs held at the phase its loop settles to.
Flyback — peak current mode with PI loop
LTspicePowerSim's 24 V to 5 V flyback, its boundary-mode latch and compensator replaced by a clocked current-mode switch.
Four-switch buck-boost — analog Type III loop
LTspicePowerSim's 3.5 V to 3.3 V buck-boost, its compensator, PWM and dead time drawn from native control parts.