H-Bridge Calculator

Calculate H-bridge motor driver parameters including average motor voltage, back-EMF, MOSFET losses, power dissipation, efficiency, and component ratings from supply voltage, current, and PWM settings.

How to Use H-Bridge Calculator

Enter supply voltage, motor current, motor resistance, PWM frequency, and duty cycle. Click Calculate to see average voltage, back-EMF, losses, efficiency, and recommended MOSFET ratings.

Step-by-Step Instructions

  1. Enter supply voltage and motor current
  2. Set motor resistance and PWM frequency
  3. Set duty cycle percentage
  4. Click Calculate Parameters to view results

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