Summary of DC Motor IR2104 H-BRIDGE
This article describes a DC motor driver board built around the IR2104 H-bridge IC, capable of handling 8–10A loads at 36V. It utilizes N-channel IR540 MOSFETs and includes an on-board shunt resistor for current feedback to interface with microcontrollers. The design supports logic voltages of 3.3V, 5V, and 12V, operates at PWM frequencies between 10–20 KHz, and offers a duty cycle range of 0–99%.
Parts used in the DC Motor IR2104 H-BRIDGE:
- IR2104 IC
- N Channel IR540 MOSFETs
- Shunt Resistor
- Screw Terminal Connector (for Motor DC Supply)
- Screw Terminal Connector (for Load)
- 7 Pin Header Connector (for Inputs)
- Large Heat Sink
H-Bridge has been designed around IR2104 IC from international Rectifier. The board has been made mainly for DC-Motor application. The driver can handle load up to 8-10Amps. I have tested this board with 36V DC supply . The circuit uses N Channel IR540 MOSFETS from international rectifier. IR540 requires large heat sink for 10Amps load. Board has shunt resistor to provide voltage proportional to current flowing through load. This can be later amplify and connect it to microcontroller.
Features
Motor DC Supply 36V DC (Screw Terminal Connector)
Logic Supply 12V DC
Load 8-10Amps (Screw Terminal Connector)
Header Connector for Inputs (7 Pin Header Connector)
On Board Shunt Resistor for Current feedback
PWM Frequency 10 to 20 KHz
Duty Cycle 0-99%
Logic Pins support 3.3V, 5V, 12V (Inputs and PWM)
Schematic
SCHEMATIC1 _ PAGE1
Parts List
For more detail: DC Motor IR2104 H-BRIDGE
- What is the maximum load current this board can handle?
The driver can handle loads up to 8 to 10 Amps. - Can I use 3.3V logic signals with this circuit?
Yes, the logic pins support 3.3V, 5V, and 12V inputs. - How do I monitor the current flowing through the load?
The board includes a shunt resistor that provides voltage proportional to the current. - What type of transistors are used in this H-Bridge design?
The circuit uses N Channel IR540 MOSFETs from International Rectifier. - What is the recommended PWM frequency range for operation?
The PWM frequency ranges from 10 to 20 KHz. - Is a heat sink required for the MOSFETs?
Yes, the IR540 requires a large heat sink when driving a 10 Amp load. - What voltage supply is used for the motor DC input?
The motor DC supply is designed for 36V DC via a screw terminal connector. - How many pins are available on the input header connector?
The board features a 7 Pin Header Connector for inputs.
