Author Topic: A Standalone Full Bridge DC Motor Driver  (Read 792 times)

0 Members and 1 Guest are viewing this topic.

Offline hesam.moshiri

  • Regular Contributor
  • *
  • Posts: 111
  • Country: se
    • MyVanitar
A Standalone Full Bridge DC Motor Driver
« on: October 26, 2022, 09:58:24 am »
The Full-Bridge (H-Bridge) is the most popular driver circuit to control brushed DC motors. The main advantage of a full bridge driver is the ability to change the rotation direction of the motor, without manually reversing the supply wires. I’ve already published the Half-bridge and H-bridge driver circuits before; however, I was receiving many requests and comments for a standalone H-Bridge driver to control the DC motors, without using any external board or a controller.

Therefore, I introduced a cheap, compact, and standalone H-Bridge DC motor driver that can be embedded in a variety of mechatronic devices. A cheap ATTiny13 microcontroller controls everything and I used the Arduino IDE to write the microcontroller code. All components, except for the connectors, are SMD.

The motor can be controlled in three modes: Forward, Stop, and Reverse. The user can adjust the rotation speed of the motor separately in the forward or reverse direction, using two panel-mounting potentiometers. The low ON-Resistance of the Mosfets allows you to use this circuit in high currents.

To design the schematic and PCB, I used Altium Designer 22. The fast component search engine (octopart) allowed me to quickly collect the components’ data and generate the BOM as well. To get high-quality fabricated boards, I sent the Gerber files to PCBWay. To test the driver board, I disassembled an electric toy car and used its powerful 775 DC motor (plus the gearbox).

It’s a cool experience, just build one and have fun!

Offline voltsandjolts

  • Supporter
  • ****
  • Posts: 1965
  • Country: gb
Re: A Standalone Full Bridge DC Motor Driver
« Reply #1 on: October 26, 2022, 10:32:55 am »
I'm curious about the Altium sponsorship, which I've seen on quite a few YT videos.

Did you contact Altium to obtain sponsorship, or did they contact you through YT?

What is the sponsorship? A free perpetual Altium license, or time limited as long as you produce videos, or something else?


Share me

Digg  Facebook  SlashDot  Delicious  Technorati  Twitter  Google  Yahoo