H-bridge Power
Calculate H-bridge Power instantly with the exact formula and a worked example.
H-bridge Power
Supply voltageV
Motor currentA
PWM duty cycle%
Rds(on) per switchmΩ
Power to motor
47W
Power from supply
48W
Switch losses
1W
Bridge efficiency
97.9%
Average motor voltage
9.6V
More about: H-bridge Power
What it calculates
The “H-bridge Power” calculator computes Power to motor in W from 4 parameters: supply voltage (V), motor current (A), pwm duty cycle (%), rds(on) per switch (mΩ).
A standard physics formula used in educational and engineering tasks.
Example calculation
With parameters Supply voltage = 12 V, Motor current = 5 A, PWM duty cycle = 80 %, Rds(on) per switch = 20 mΩ the result is 47 W (Only switch conduction losses are included; switching losses are not).
How to use
- Enter supply voltage, motor current, pwm duty cycle and rds(on) per switch — each field above is adjustable with a slider.
- Power to motor (W) is calculated automatically as you type.
- Check the worked example below to see the formula applied to real numbers.
- Copy the result or bookmark this calculator.
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FAQ
How is H-bridge Power calculated?
The H-bridge Power calculator computes Power to motor (in W) from supply voltage, motor current, pwm duty cycle, rds(on) per switch. Enter your values above and the exact formula is applied instantly; a worked example with real numbers is shown below.
Is the H-bridge Power calculator free?
Yes. It is completely free, needs no signup, runs entirely in your browser, and sends no data to any server.
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