Tuesday, October 01, 2019

Full-bridge IRS20957 Class-D Amplifier

Full-bridge IRS20957 Class-D Amplifier

Here I will share schemes PCB layout and parts list for the power amplifier class-d full-bridge IRS20957s, power amplifier scheme is designed by Mr.Kartino surodipo. By utilizing the Logic inverter CD4049 with two IRS20957 amplifier circuits it can be transformed into a full bridge amplifier circuit.

Following is the full-bridge power amplifier circuit scheme. You can download PDF versions that already have protection and indicators and limiter input.

Schematic Full-bridge IRS20957 Class-D Amplifier

And for the PCB layout, I designed using EasyEDA using SMD components which are still easy to obtain. You can download the part list, Gerber file at the end of the post.

I have tested this amplifier at 70VDC, can output about 1100W RMS at a load of 4 ohms. Enough power can be released by this amplifier with a small amplifier dimension.
Layout Full-bridge IRS20957 Class-D Amplifier

Eurolive Fullbridge build and test
Download:

Please extract the file before using, Password: www.elcircuit.com

Electronic Circuit is a good site for hobbyist also who would like to try DIY because it shared good circuits. If you have a personalized circuit requirement you may feel free to request it through the comment box or contact me.

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3 Comments

where is the driver board gerber?

why is there a buffer cicuit namely 2SC5866,2SA2094 on the scematics, while the driver pcb i have ordered has none?, the H0 And Lo of the ic is connected direcly to pin Ho and LO
,

i removed the totem transistor, its work also. cause the totem is not working


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