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Applications

Basic Class D amplifier

The class D amplifiers are very common in the audio applications due the low quantities of components, the high-power output and good thermal performance. This block diagram is a basic overview of the class D amplifiers in the market.

Application Consideration

The block diagram is considering the principal parts of a class D amplifier: Rectifying (Bridges rectifiers and TVS), Filtering, audio conditioner and amplification (BJTs and MOSFETs).

Block Diagram

1873401E-882B-4065-B8C3-3C05CE1110B1 Bridge Rectifier Filter Stage High Current Low Current Audio IN Transients Protection Power Audio Stage Small Medium Power 2nd Step of Amplifier 3rd Step of Amplifier 1st Step of Amplifier Zeners Audio Convertors A/C Input