The STA517B (175 watts per channel) digital power amplifier with two BTL outputs is used as an example, but the basic concepts are the same for all class-D amplifiers. A good ground plane is the key ...

Careful attention to device selection is essential to optimizing amplifier performance. As an amplifier’s output power capability increases, Class D’s efficiency advantages over Class AB becomes ...

Until quite recently, the majority of high-fidelity audio amplifiers were analog, and most were of a type called Class A/B. What does that mean ... This weak AC signal is used to modulate a circuit ...

Class D amplifiers have increased their ... Q1 or Q2 (green and blue lines), delivering power to the load. As a “buck-derived” topology, the circuit operation is similar to a two-phase buck ...

What is a Class D amplifier? A Class D amplifier converts an audio signal to pulse-width modulation (PWM). Its power stage efficiently amplifies the PWM signal and filters it to drive the speakers.

In a Class A circuit the level of that current is always set to maximum ... The sheer efficiency also allows Class D amplifiers to deliver huge power outputs for their size. These advantages mean that ...

[Ben Laskowski’s] been working on a Class-D audio amplifier for several months ... Still, we’re quite pleased at the power and quality the small board can put out. Take a look at a post ...

The latter amplifier design utilizes an analog input signal with a switching power supply. Rotel has taken this analog-controlled Class D design a step further with the implementation of two important ...