H-Bridge

Design Specs #

• Max load current = 500mA
• Load voltage is ~6V
• Gate voltage from driver is the same as load voltage
• Switching frequency = 44kHz
• No heatsink or forced air

Design calcs #

Assume max power diss = 100mW $$ \begin{align*} P &= I^2 R_{ds} \\ 0.1 &= 0.5^2 R_{ds} \\ 0.2 &= 0.5R_{ds} \\ R_{ds}&= 400 \textup{m} \ohm \end{align*} $$