Buck Converter Calculator

The buck (step-down) converter is the most widely used DC-DC topology, found in CPU VRMs, battery chargers, and LED drivers. Calculate duty cycle, inductor, and capacitor values for your design.

Typical range: 50 kHz to 2 MHz
Typical: 20–40%
Schottky ≈ 0.4–0.6 V; synchronous rectifier = 0
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