The type d amplifier
drives the amplifier of the loudspeaker by controlling ON/OFF of the switching unit. The type d amplifier was first introduced in 1958, and it has gradually become popular in recent years. The type d amplifier has been greatly developed in the past few generations. System designers have greatly improved the durability of the system and the audio quality.
Digital amplifiers improve audio quality and system performance.
In fact, for most applications, the benefits of using these amplifiers far outweigh their disadvantages.
In traditional type d amplifier, analog or digital audio signals are converted into PWM signals by a controller before being amplified by power MOSFET tubes integrated into power back-end devices. These amplifiers are highly efficient, and use very small radiators or do not need radiators at all, and reduce the power output requirements. However, compared with traditional class A/B amplifiers, they also have inherent cost, performance and EMI problems. To solve these problems is the new development trend of type d amplifier.