App-note math, without the app note.
These distill formulas from motor, power, and gate driver design references into quick, interactive tools. Everything runs in your browser — nothing is sent to a server.
Bootstrap Capacitor
Minimum bootstrap capacitance and peak diode current for a high-side gate driver.
Buck / Boost Converter
Inductor, output capacitor, and peak current selection for a buck or boost stage.
Stepper Motor Current & Torque
Holding torque, electrical time constant, and corner step frequency from motor parameters.
BLDC Commutation Timing
Electrical frequency, six-step commutation interval, and control loop rate guidance.
Encoder Resolution & Speed
Quadrature counts, angular resolution, and min/max measurable speed for an incremental encoder.
Bulk Capacitor
DC-link bank sizing for a motor drive: ripple current, harness resonance and stability, hot-plug, load step, and regen.
CLLC Resonant Converter
Tank design calculator, circuit diagram, parts breakdown, and signal I/O for a bidirectional CLLC converter.