Motor-driven H-bridge circuit

Abstract

A motor driving H-bridge circuit comprises a first forward rotation branch, a first reverse rotation branch, a second forward rotation branch, a second reverse rotation branch, a dual-channel MOS tube Q2, a dual-channel MOS tube Q3 and an MCU control module, the D1 / D2 pole of the dual-channel MOS tube Q2 is connected with the positive electrode of a motor, the D1 / D2 pole of the dual-channel MOS tube Q3 is connected with the negative electrode of the motor, the S2 pole of the dual-channel MOS tube Q2 and the S2 pole of the dual-channel MOS tube Q3 are connected with an electric energy input end V +, and the MCU control module is connected with the MCU control module. The S1 pole of the dual-channel MOS tube Q2 and the S1 pole of the dual-channel MOS tube Q3 are connected in series with a resistor R33 and then are grounded; the first forward rotation branch circuit is connected with a G2 electrode of the double-channel MOS tube Q2 and the MCU control module, the second forward rotation branch circuit is connected with a G1 electrode of the double-channel MOS tube Q3 and the MCU control module, the first reverse rotation branch circuit is connected with the G2 electrode of the double-channel MOS tube Q3 and the MCU control module, and the second reverse rotation branch circuit is connected with the G1 electrode of the double-channel MOS tube Q2 and the MCU control module. According to the invention, the two dual-channel MOS tubes are adopted to realize the functions of forward and reverse rotation, speed regulation and braking of the motor, and the motor is smaller in size and has great advantages in small space application.

Description

technical field [0001] The invention belongs to the field of drive circuits, and in particular relates to a motor-driven H-bridge circuit. Background technique [0002] At present, the height-adjustable table controller is becoming more and more miniaturized, and the integration of the control circuit is also higher and higher. In the height-adjustable table control circuit, the motor drive circuit is a crucial part, which directly affects the lifting performance of the table. At present The common motor drive circuit is an H-bridge circuit composed of four triodes and a motor, which is large in size and difficult to play in a small space. Contents of the invention [0003] To solve the above problems, the present invention provides a motor-driven H-bridge circuit. [0004] The present invention adopts following technical scheme: [0005] A motor-driven H-bridge circuit, comprising: a first forward rotation branch, a first reverse rotation branch, a second forward rotati...

AI Technical Summary

Problems solved by technology

[0002] At present, the height-adjustable table controller is becoming more and more miniaturized, and the integration of the control circuit is also higher and higher. In the height-adjustable table control circuit, the motor drive circuit is a crucial part, which directly affects the lifting performance of the table. At present The common motor drive circuit is an H-bridge circuit composed of four triodes and a motor. It is large in size and difficult to play in a small space.

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