CLASS D AMPLIFIER Russian patent published in 2023 - IPC H03F3/217 

FIELD: amplification; generator technology.

SUBSTANCE: invention can be used in broadband transmission routes with audio frequency range. This result is achieved by the fact that in a class D amplifier containing a master oscillator connected to a sawtooth voltage generator, the outputs of which are connected to the inputs of the first and second comparison circuits, the second inputs of which are connected to the outputs of the first and second operational amplifiers, and the outputs to the inputs of the first and the second pre-amplifiers, the outputs of which are connected to the inputs of the first and second key power amplifiers, the load and the signal conditioner, the third operational amplifier, the third comparison circuit, the third pre-amplifier, the third key power amplifier, as well as three inductive filters, three current sensors, adder and subtractor are additionally introduced, and the sawtooth voltage generator has three channels.

EFFECT: threefold decrease in the required frequency of the PWM conversion while reducing the non-linear distortion of the output signal and reducing the dynamic energy losses.

1 cl, 3 dwg