Buck Converter Calculator

How Buck Converter works

The calculation starts with Vout = Vin × D. Buck Converter uses Input voltage, Duty cycle to report Ideal buck output. Required capacitance can be checked in Smoothing Capacitor Calculator.

With the loaded values, ideal buck output evaluates to 8.40 V. Change only the quantity being investigated.

Inputs for Buck Converter

Input voltage and Duty cycle belong to Buck Converter. Keep source units with input voltage.

The preset case is instructional rather than prescriptive. Enter the applicable electrical data.

Input voltage

Example entry: 24 V.

Duty cycle

Example entry: 35%.

Reading the Buck Converter result

This output represents Buck Converter.

Standard size, duty, temperature, and transient checks remain outside this single equation. Use Transformer Current Calculator to a separate secondary current calculation.

Measurement and units

Check component ratings, isolation requirements, temperature, waveform, and manufacturer limits. Check prefixes on input voltage. Continue to Current Transformer Ratio Calculator for primary current.

Keep the same electrical reference points across saved cases.

Limits of this calculation

Continuous-conduction ideal operation is assumed.

A complete system can contain effects that this equation does not represent. Unentered effects remain outside Buck Converter.

A useful Buck Converter comparison

Record ideal buck output before testing a different input voltage value.

Document the alternate input voltage source. Use Converter Duty Cycle Calculator.

Questions about Buck Converter