What is Class D Amplifier?

As the name suggests D, is a digital amplifier. It is also known as a switching amplifier that uses the transistors and MOSFETs as electronic switches and performs quickly switching between the supply rails. There is a modulator available in this amplifier that shifts the sampling frequency to the highest frequency. That is why they are used in audio amplifiers to enhance the quality of sound. Using pulse width modulation, this amplifier converts the input (analog) signal to digital pulses. Their efficiency varies from 80% to 95%.

Schematic Diagram:

I have used the Altium designer to design my schematic diagram. First of all, I have created the symbols and footprints of all the components then I have designed my schematic. I have uploaded my schematic file online on Inventhub for the users who want to implement my design. They can go to the provided link and can view or download my design easily. I can also view the changes I have made in my design by going to the ‘view changes’ tab. I can also collaborate with the people, they can comment on my design and can give suggestions to improve my design further.

PCB Board Design:

I have converted my schematic file to the PCB file in Altium, where I can create connections on the board, define the shape of the board, arrange the components on the board, and can view my PCB in 3D view. I have uploaded my PCB file on Inventhub, where I can view my boards in different layers and can focus on a specific layer by disabling the other layers. Users and manufacturers can easily view or download my design for the implementation. Users do not need to design the symbols and footprints, they can download those parts from my components management library on Inventhub. This can help in reducing the errors in the design.

Bill of Materials:

After the fabrication of the board, I created a list of components on Inventhub which contains the details of the manufacturer, supplier, manufacturer part number, pricing, and quantity. By just putting these details in the BOM file on Inventhub, it has calculated the total cost of the design automatically using the supply chain option. I can also view the datasheet of the component and can view its 3D model. For this project, our cost is almost $17.23 which is reasonable.

Instead of visiting the component provider, I can send him this BOM file, he can download it in CSV file format and can deliver my components as per my design requirements.