a drive circuit

Abstract

The present invention relates to the technical field of electronic circuits, and discloses a driving circuit, comprising: a current signal amplifying circuit, a follower circuit, a high-voltage side current amplifying circuit and a power driving circuit, and the following circuit is connected with the current signal amplifying circuit and the high-voltage side current amplifying circuit respectively. circuit connection, the high-voltage side current amplification circuit is also connected to the power drive circuit, the power drive circuit includes a low-voltage drive circuit and a high-voltage drive circuit, and the power drive circuit is implemented through the follower circuit and the high-voltage side current amplification circuit. High and low voltage switching, the high and low voltage switching of the power drive circuit is performed by following the circuit and the high voltage side current amplification circuit, which reduces power loss, improves overall efficiency, reduces heat generation, and facilitates radiator design.

Description

Technical field [0001] The present invention relates to the field of electronic circuit technology, and more particularly to a driving circuit. Background technique [0002] At present, load devices such as voice coil motors and high-power high-speed speakers require driving circuits, and existing driving circuits contain two partial functions. First, the enlargement of the input signal, its magnification is fixed in circuit design; It is a load device to drive to output the amplified signal to the load device. In the actual use environment, the circuit form of simply enlargement, no drive power is often referred to as how many multiple amplifiers, and for the driving ability Circuit form, usually referred to as W (Watt) amplifier. [0003] For amplifiers with drive power, depending on the analog drive mode and the digital drive mode, it can be divided into an analog class amplification driver and D class (digital) amplification drive. Where analog type amplification drive can be...

AI Technical Summary

Problems solved by technology

Among them, the analog amplifier drive can be divided into Class A (Class A) power amplifier drive mode, Class B (Class B) power amplifier drive mode, Class AB (Class A and B) power amplifier drive mode and Class C (Class C) power amplification driving mode, among which, Class AB power amplification driving mode refers to 180°<θ<200° or below, where 200° or below is an empirical value, and the energy loss of this type of driving circuit is relatively large. In order to output more power, the method of increasing the power supply voltage is often used, and the power loss also increases, and it is expressed in the form of heat energy, which requires a corresponding increase in the area of ​​​​the radiator

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