Push-pull signal power amplification circuit and system

Abstract

The invention relates to a push-pull signal power amplification circuit and system. The push-pull signal power amplification circuit comprises a PWM-MAP push-pull power amplification circuit and a PWM-MAN push-pull power amplification circuit. The PWM-MAP push-pull power amplification circuit comprises a first differential conversion module, a first bootstrap amplification module electrically connected with the first differential conversion module, a first H half-bridge module electrically connected with the first differential conversion module and the first bootstrap amplification module, and a first resistance power amplification module; the PWM-MAN push-pull power amplification circuit comprises a second differential conversion module, a second bootstrap amplification module electrically connected with the second differential conversion module, a second H half-bridge module electrically connected with the second differential conversion module and the second bootstrap amplification module, and a second resistance power amplification module; therefore, the system does not need to depend on an inherent circuit of a traditional power amplifier, power amplification can be carried out on the PWM push-pull signal, the noise interference resistance is high, and the sound quality requirement for amplification of vehicle-mounted audio equipment can be met.

Description

technical field [0001] The present application relates to the technical field of vehicle audio amplification, in particular to a push-pull signal power amplification circuit and system. Background technique [0002] In the field of traditional car audio amplification, it mainly relies on the power amplifier to amplify the signal. The audio signal enters from the pre-amplifier, and is sent to the post-amplification through the tone board and the reverberation of the microphone, and finally sent to the audio through the protection board; while the traditional relying on power The inherent circuit of the amplifier has many circuit components and weak anti-noise interference ability, which cannot meet the sound quality requirements of car audio amplification. Contents of the invention [0003] The embodiment of the present application provides a push-pull signal power amplification circuit and system, which can amplify the power of the PWM push-pull signal without relying on t...

AI Technical Summary

Problems solved by technology

[0002] In the field of traditional car audio amplification, it mainly relies on the power amplifier to amplify the signal. The audio signal enters from the pre-amplifier, and is sent to the post-amplification through the tone board and the reverberation of the microphone, and finally sent to the audio through the protection board; while the traditional relying on power The inherent circuit of the amplifier has many circuit components and weak anti-noise interference ability, which cannot meet the sound quality requirements of car audio amplification

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