Figure 1 – Schematic for a stereo BTL class-D power amplifier Ground plane A good ground plane is the key to a good class-D amplifier layout. The bottom side of the circuit board should be used ...

PCB layout is very important to Class D amplifiers to obtain the best SNR, best thermal efficiency, and the lowest EMI. Any designer new to this field should examine proven designs to ascertain best ...

May 21, 2011 [Ben Laskowski’s] been working on a Class-D audio amplifier for several months. What you see above is the most recent version of the amp.

Emitted EMI is a drawback to the switching topology of the Class D amplifier. Passive filtering can moderate EMI but adds cost and complexity to the end product. What other internal circuit design ...

Class D amplifiers also are extremely efficient (often up to 90% or higher) because the output transistors are fully turned ON or OFF during operation. Therefore, there are no power losses in the ...