Buck-Boost Converter Calculator

Formula used on this page

Start with the equation |Vout| = Vin × D ÷ (1 − D). Only Input voltage and Duty cycle enter the numerical result.

With the current entries, the primary answer is 8.00 V. Preserve the raw inputs when replacing this example.

Calculate output magnitude from input voltage and duty cycle. Boost Converter Calculator may be useful for the next related quantity.

Measurements and entries

Use voltage and current values from the same side of the transformer or converter. Do not combine a worst-case value with unrelated nominal data.

At least one field has a positive lower bound because it appears in a denominator. Convert units once, retain the original reading, and verify the converted magnitude.

Input voltage

Default example: 12 V. Enter input voltage in V.

Duty cycle

Default example: 40%. Enter duty cycle in %.

Reading Output magnitude

The primary answer, Output magnitude, describes only the entered scenario. Compare it with voltage stress, current stress, ripple, loss, regulation, and temperature.

Store the measurement state and conversion notes with the answer.

Sensitivity check

Change Input voltage from 12 V to 14.399999999999999 V with the rest of the inputs held constant. The comparison runs from 8.00 V to 9.60 V.

Do not average the two cases if either could define an operating limit.

Where this estimate can fail

Polarity depends on topology.

Outside the entered variables, consider diode loss, ESR, regulation, ripple current, and thermal resistance. Test an additional scenario when an omitted effect has a plausible range.

Identify RMS, average, peak, and rectified quantities explicitly.

Before relying on the answer