Friday, May 25, 2018

HiFi Class-D Discrete Power Amplifier

HiFi Class-D Discrete Power Amplifier
Hello, friends this time I will share the scheme of class-d power amplifier circuit using discrete components (transistors, resistors, capacitors) without using IC. The power amplifier can produce output power 200 Watt to 500W RMS, which only use final transistor Mosfet N-channel as much as 2 pieces. In this circuit, I use 2 pieces of final transistor IRF540. This IRF540 MOSFET transistor can control voltage up to 100V with maximum current 28A continuously. So I just use the transistor for the final amplifier (switching PWM). Power amplifier class-d super HiFi can be supplied up to 45V DC CT. and for circuit schematics also PCB Layout design I can see below:

HiFi Class-D Discrete Power Amplifier Circuit
PCB Layout in 2 Layers:
PCB Layout Design HiFi Class-D Discrete Power Amplifier



  1. Hi, what is the size of the board? and which analog D10

  2. As the Professional PCB Assembly and PCB Manufacturer in China, we pride ourselves on our Excellent Customer Service and Reliability! MOKO Technology Ltd also offers Exclusive Services to Help Our Customers with their PCB Projects. Check out our Free PCB Layout Software, our Free PCB File Check and Free PCB Sample. our Printed Circuit Board wants to make your life easier.