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%

98.6%

Efficiency

45.0 W

Output Power

Avg Motor Voltage: 9.0 V

Conduction Loss0.500 W

Switching Loss0.120 W

Gate Drive Loss40.00 mW

Total Loss0.660 W

Ripple Current0.11 A

Ripple Percentage2.3%

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MyCalcBuddy Editorial Team

This page is maintained as an educational calculator reference.

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Formula Source: Standard Mathematical References

by Various

ðŸ”„Last reviewed: May 2026

âœ“Formula checks are based on standard references and internal QA review.