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H-bridge motor driver with same bridge interlocking and adjustable dead zone time

A motor driver and dead time technology, applied in the direction of DC motor rotation control, excitation or armature current control, etc., can solve the problems of high circuit power consumption, no interlock, large output current, etc., to achieve small product size, circuit Low loss effect

Pending Publication Date: 2019-08-27
SHENZHEN ZHENHUA MICROELECTRONICS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Disadvantages: large circuit power consumption (close to 2W); acceptable, wide input voltage range (8V ~ 16V); anti-H bridge circuit conduction function with the bridge arm; prevent the H bridge circuit from conducting with the bridge arm when the input state is unstable Function; the two input signals are compatible with COMS and TTL level functional requirements, but do not meet the requirements of large output current (1A), because when working at 1A output current, the power consumption of the circuit is close to 4W
[0009] Disadvantages: no interlock function during normal operation and unstable input state; no dead time adjustable function
The H-bridge circuit will conduct with the bridge arm

Method used

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  • H-bridge motor driver with same bridge interlocking and adjustable dead zone time
  • H-bridge motor driver with same bridge interlocking and adjustable dead zone time
  • H-bridge motor driver with same bridge interlocking and adjustable dead zone time

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Embodiment Construction

[0033] In order to describe the technical solution of the present invention more clearly and completely, the present invention will be further described below in conjunction with the accompanying drawings.

[0034] The present invention proposes an H-bridge motor driver with adjustable interlocking dead time of the same bridge, including a signal input terminal INA, a signal input terminal INB, an H bridge circuit, two-way level conversion circuits, and four-way dead-time adjustment circuits , the H bridge circuit is connected to the motor, the signal input terminal INA and the signal input terminal INB are connected to one level conversion circuit, one level conversion circuit is respectively connected to two dead time adjustment circuits, and the four dead time adjustment circuits are connected to the H bridge The circuit adjusts the signal state of the signal input terminal INA and the signal input terminal INB to drive the running state of the motor; each of the four dead-t...

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Abstract

The invention provides an H-bridge motor driver with same bridge interlocking and adjustable dead zone time. The H-bridge motor driver has the advantages of low circuit loss, no same bridge arm conduction of an H-bridge circuit, small product size and an adjustable dead zone time function.

Description

technical field [0001] The invention relates to the field of motor drive, in particular to an H-bridge motor driver with adjustable interlocking dead time of the same bridge. Background technique [0002] The development of brushed DC motors has been very mature so far, and the application occasions are also very wide. The control and drive technology of the motor is also relatively mature, but it is not easy to realize when it is applied to special occasions. The invention mainly solves the control and drive of the DC brushed motor used in the high-reliability electronic equipment. At the same time, it can also be widely used in control fields such as solenoid valves and electromagnetic relays. According to user requirements, it is necessary to design a DC brushed motor drive circuit with adjustable dead time. Specific index requirements: 1. Single power supply; 2. Input voltage range 8V ~ 16V (typical value 12V); 3. Working current 1A; 4. Two input signals, compatible w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P7/03H02P7/28
CPCH02P7/04H02P7/28
Inventor 孙雨佳张晓婕侯园张天会陈建功徐志美
Owner SHENZHEN ZHENHUA MICROELECTRONICS