Use this electronics calculation for a first-pass component, converter, signal, motor, or sensor estimate when the stated operating conditions and units match the device data.

Inductor ripple current (A)

Required number input.

Switching frequency (kHz)

Required number input.

Output capacitance (uF)

Required number input.

Compute buck converter output ripple voltage in the ESR-less form dI_L / (8 x f x Cout). The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.^[1]

Output ripple voltage (V)

The resulting output ripple voltage returned as a number.

• Power-supply ripple, hold-up, inrush, efficiency, and loss calculations depend on line range, load transient, switching mode, capacitor bias and ESR, rectifier conduction interval, control limits, temperature, and component tolerance. Safety, stability, EMI, and fault behavior require separate verification.
• Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.

Check the result against the current datasheet and worst-case operating corners, then verify the circuit or measurement with simulation and bench testing where failure matters.

• ESR Limit For Ripple

  Compute the maximum output capacitor ESR in milliohms that keeps ripple-induced ripple voltage within budget as ripple millivolts over ripple amperes.

• Input Ripple Voltage

  Compute buck converter input ripple voltage as Iout x D x (1 - D) / (C x f).

• Accelerometer Voltage Output

  Calculate linear analog accelerometer voltage from zero-g voltage, sensitivity in volts per g, and signed acceleration in g.