According to the IRF3205 datasheet: ”Advanced HEXFET? Power MOSFETs from International Rectifier utilize advanced processing techniques to achieve extremely low on-resistance per silicon area. This MOSFET offers nice characteristics that are essential for this application, very low RDSon resistance, and high current handling capability. I’ve selected 4 IR3205 to do the switching. Schematic diagram of the H-Bridge DC motor driver As it is clear, the heart of the circuit is two IR2104 MOSFET driver chips. Theoretically, the above-mentioned MOSFET can handle currents up to 80A, however, in practice we can expect to get currents up to 40A if the MOSFET temp[erature is kept as low as possible, using a big heatsink or even a fan.įigure 1 shows the schematic diagram of the H-Bridge DC motor driver. In this article/video, I have introduced a complete H-Bridge DC motor driver using four IR3205 power MOSFETs and two IR2104 MOSFET drivers. The main advantages of using an H-Bridge driver are: high efficiency, rotation direction change, and braking the motor. An H-Bridge (Full-Bridge) driver is quite popular in driving loads such as brushed DC motors and it is widely used in robotics and industry.
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