Class-D UcD Amplifier IRS20957s

By Electronic Circuit Monday, June 06, 2022 Post a Comment

In this post, we will assemble a UcD class-D topology power amplifier using the IRS20957s IC and a comparator using the LM311 IC, this scheme was designed by Mr. Kartino Surodipo, and re-schemed using the EasyEDA application, this amplifier circuit can be supplied with 60VDC to 90VDC CT, and is equipped with Features DC Protection, Input balance, and led indicator.

The PCB layout was designed by Wahyu Eko Romadhon using several SMD components, from the input balance block to the gate driver, R Snubber, diode damper, as well as protection and indicator circuits.

PCB Layout Class-D UcD Amplifier LM311 IRS20957s

PCB dimensions 99x83mm. PCB can be printed on JLCPCB with a Gerber file that can be downloaded at the end of the post.

How to print PCB at JLCPCB can follow this step.

First, visit the JLCPCB site. then log in or register first (if you don't have an account) the button is in the top right corner. If you have logged into your account, then just click "Order Now"

Then click "Add Gerber file"

Select the Gerber file that has been downloaded at the end of the post link, but before using the downloaded file, the file with the name "Full UcD 2K mr.kartino (extract first)" must be extracted first.

The file already contains schematic same as PCB marking, BoM files, and PCB Layout gerber, for Gerber there are three, 1 for amplifier board, and 2 buffer versions.

Then select Gerber one by one, then double click. Wait for the upload process to complete.

Then select Gerber one by one, then double click. Wait for the upload process to complete. then if you want to add another Gerber file, just click "Add Gerber file" again. if the three PCBs have been uploaded and you have selected the option for each PCB, click the basket, go to payment by clicking (Secure Checkout), and complete the payment on the next page. Payment can use a credit card, or debit visa, and also PayPal.

Okay, let's just assemble the PCB, soldering I will use a blower solder, tin using a soldering paste, and put them on the component pad on the PCB.

PCB Class-D UcD Amplifier LM311 IRS20957s

Then install the components according to the component list, intentionally don't label with the component value, but just label the prefix, so every time install a component, look at the component list first or it could be through the schema.