Since all linear power output stages will dissipate power in class A, B, AB, and D amplifier configurations, we look for the one architecture that will enable the most efficient power so that battery ...

The power device’s characteristics, however, can limit the performance of a design. Careful attention to device selection is essential to optimizing amplifier performance. As an amplifier’s output ...

For the same output power as Class AB, Class D needs a much smaller heat sink, or, depending on power level, no heat sink at all and no labor costs for mounting power switches (Fig. 4, again).

Power-Supply Design Unlike linear amplifiers, designers using class D amplifier ICs also must pay closer attention to the effect of power-supply behavior on audio-output quality.

The major plus point of Class D is that it is very energy efficient. A typical Class A design tends to be around 30% efficient. Class A/B roughly doubles that while Class D amplifiers almost ...

Efficiency of a Class A/B amp is still about 50%. Class D amplifiers, although there are a number of different design variations, are essentially switching amplifiers or Pulse Width Modulator (PWM) ...

The Class D amplifier offers an answer to this challenge by achieving much higher efficiency than Class AB amplifiers. Operating on switching principles, rather than exploiting the linear portion of ...

AMP-1640 is an ultra-efficient Class D amplifier delivering 16 channels of reliable amplification rated at 40 Watts per channel into 8- Ohms in a 3 rack-space metal enclosure. The extraordinary power ...

Rotel Electronics RB-1092 Amplifier Not all Class D amplifiers are alike. There are two categories: namely digitally controlled Class D and analog-controlled Class D. The former features a digitally ...

Complementing these efforts, recent work on wideband Class-J amplifiers has illustrated how careful impedance matching and biasing techniques can yield low-power, high-efficiency solutions ...