Sunday, September 01, 2019

500W Class-D Amp IRS20957 SMD

Hello, at this time I will share about power amplifier class-d using IRS20957 class-d amp driver, this amplifier using half-bridge topology, mono power amplifier. Output power amplifier up-to 500W RMS at load 4 Ohm with supply voltage 90VDC. continous output power up-to 300W RMS.

In the previous post Power Amplifier Class-D IRS20957 Behringer B215D I have also made this amplifier, but the difference in the component that I use. in this post, I use the SMD component, so it looks even tinier, and this is highly recommended for power amplifier lovers with a simple and minimalist design that doesn't take up much space. 
And for the PCB driver, I made it apart to make it more minimalist, and it looks cooler. besides that, the PCB with 2 layer design is also quite cheap if we order at JLCPCB because the dimensions are below 10x10cm.

The following circuit schematic for IRS20957 drivers:
Driver schematic 500W Class-D Amp IRS20957 SMD
 Complete amplifier schematic:
Power 500W Class-D Amp IRS20957 SMD

PCB Layout design in two separate design;
PCB Layout 500W Class-D Amp IRS20957 SMD

Video Assembly and test

Download Gerber, Schematic, BoM (Part List) in one compressed file, extract first before using:


  1. Hi, I wish to build my own version of this amplifier. Seeing your schematic, am I to understand that the .pdf file also contains the schematic from the zipped schematic-image as well?

  2. hi, what a nice design, i am very excited to try make it at home.. i already download the zip file for the gerber file, but one thing, can i, please, get the password for the zip file? i couldn't extract it without the password.. big thanks to you..

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