H-Bridge Calculator

Calculate H-bridge motor driver power losses, efficiency, and PWM design parameters.

H-Bridge Parameters

Supply Voltage (V)

Motor Current (A)

MOSFET Rds(on) (Ohms)

Gate Charge (nC)

PWM Frequency (Hz)

Motor Inductance (mH)

Duty Cycle: 75%

Efficiency & Output

98.6%

Efficiency

45.0 W

Output Power

Avg Motor Voltage: 9.0 V

Power Losses

Conduction Loss0.500 W

Switching Loss0.120 W

Gate Drive Loss40.00 mW

Total Loss0.660 W

Current Ripple

Ripple Current0.11 A

Ripple Percentage2.3%