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TOOL IDB-ELE-004

DC-DC efficiency

Desktop only

Engineering tools are available only on desktop screens.

DC-DC efficiency

Efficiency, input power, output power, and losses. For bench-validating a buck/boost or sanity-checking a datasheet curve.

Power flow — W lost

Typical η vs load curve measured point on a synthetic curve

Vin V

Iin A

Vout V

Iout A

Engineering notes

Formula

P_in = V_in · I_in
P_out = V_out · I_out
η = P_out / P_in

Typical efficiencies

Synchronous buck: 90–96% at mid load.
Boost: 85–92%.
Linear regulator: V_out/V_in.
Below 70%: check switching freq, inductor, ripple.

Result

Live

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How we use data

Ideambox Contact Privacy Policy TermsThe tool gives one measured point; the reference has LDO-vs-buck limits, where efficiency peaks and cap sizing. Electronics and PCB design → Staff login