Half Bridge Driver based on IR2104

  • Rajkumar Sharma
  • easy
  • Tested
  • SKU: EL48436
  • Quote Now


This Half-bridge driver based on IR2104 gate driver IC and N channel Dpak  MOSFET  , The IR2104 is a  high voltage, high speed power MOSFET driver with independent high and low side referenced output channels. HVIC and latch immune CMOS technologies enable ruggedized monolithic construction. The logic input is compatible with standard COMOS or LSTTL output, down to 3.3V logic. A gate IR2104 driver is a power amplifier that accepts a low-power input from a controller IC and produces a high-current drive input for the gate of a high-power transistor such as a power MOSFET. In essence, a gate driver consists of a level shifter in combination with an amplifier.

This drive has many application, ranging from  DC-DC power supply for high power density and efficiency, This project simplifies the design of control systems for a wide range of motor applications such as home appliances, industrial drives, DC brushed motors , Brushless motors, fans, Tesla Coil driver, Induction coil driver, LED driver, Halogen Lamp driver.


  • Load Supply 12 to 36V DC
  • Load Current 10Amps (Peak 20Amps)
  • Logic Supply 12 To 15V DC
  • Input Signals 3.3V to 15V
  • SMD based tiny design
  • Required Single PWM input
  • Shutdown Input
  • Screw Terminals for Load and Load Supply
  • Header Connector for Logic supply and inputs



Parts List






Please follow and like us:
Pin Share


Notify of

Inline Feedbacks
View all comments

Dear Sir/Madam,

Where can I order the HALF BRIDGE DRIVER BASED ON IR2104?



did you order anywhere?

Lê Tiến Anh

your lowside of you is a redundance. It’s not necessary. you can
attach parallel 2 mosfet N channel. It will increase the power capacity


It is a somewhat unusual way to drive a motor. The low side switch acts as a brake and will actually slow the motor down when it is on! You can’t just eliminate it from the circuit though because the IR2104 needs the low side switch to pull down Vs periodically to keep the bootstrap capacitor C2 charged. In fact, you can’t run the motor at full speed (PWM 100% ON) because the capacitor will run out of charge and the high side switch will turn off.

I think a better way to drive a motor from a PWM source would be the VOM1271 photovoltaic MOSFET driver. It is also isolated, so your control circuit doesn’t have to share ground with noisy motor switching!

I really appreciate this circuit though, as it helped me understand the IR2104 better for a project I am working on. Thanks!


Hello SIr,
Thanks for good explanation of this ir2104. Am looking for a case where it was applied for dc induction heating and how resonant tank was designed


TOP PCB Companies