Power Supply Calculators
5 tools
Free power supply design calculators. Design buck and boost DC-DC converters, calculate LDO dropout voltage, estimate battery life, and determine heatsink requirements.
Buck Converter Calculator
Design buck (step-down) DC-DC converters. Calculate inductor, capacitor values, and component ratings.
BuckDC-DCConverterPower Supply
Boost Converter Calculator
Design boost (step-up) DC-DC converters. Calculate inductor, capacitor values, and component ratings for your power supply.
BoostDC-DCConverterPower Supply
LDO Dropout Calculator
Calculate minimum input voltage for LDO regulators. Check headroom, power dissipation, and efficiency for your design.
LDODropoutVoltage RegulatorPower Supply
Power Dissipation Calculator
Calculate heat dissipation and junction temperature for semiconductors. Determine heatsink requirements and thermal management.
PowerThermalHeatsinkJunction Temperature
Battery Life Calculator
Estimate battery runtime for your project. Account for duty cycles and efficiency factors.
BatteryRuntimemAhPower