Single power supply integrated h-bridge DC motor drive module with complementary dead zone and isolation

Abstract

The invention belongs to the field of electromechanical servo drive, and specifically discloses a single power supply integrated H-bridge DC motor drive module with complementary dead zone and isolation. The input terminal of the isolation unit is connected to the external pins of the module, and receives the TTL control signal or uses the DSP control signal to directly control the motor. The output terminal of the optocoupler isolation unit is connected to the input terminal of the complementary dead zone circuit, and the output terminal of the complementary dead zone circuit is connected to the The input terminals of the FET output unit are connected. The module has the advantages of high integration, small size, light weight, large working current, high power density, single power supply, and dead zone protection function.

Description

Technical field[0001]The present invention belongs to the field of electromechanical servo driving, and more particularly to a single power supply integrated H-bridge DC motor drive module with a hardware complementary dead zone zone.Background technique[0002]The motion control of the brush DC motor needs to use a driving circuit that drives the DC motor, which typically needs to be driven by the movement of the motor. In addition, in order to prevent the same side field effect tube from passing through the same side field effect tube to cause the motor, the power supply or other components are required, and the dead area is required. The construction of the separation component is used to implement these functions, the circuit structure is more complicated, the circuit is large, and it is difficult to meet the miniaturization requirements of space servo products. At present, there are currently no deadline protection functions in the market-shaped DC drive module, which must be use...

AI Technical Summary

Problems solved by technology

Using separate components to realize these functions, the circuit structure is relatively complex, and the circuit volume is large, which is difficult to meet the miniaturization requirements of aerospace servo products

At present, some of the DC brush drive modules formed in the market do not have the built-in dead zone protection function and must be configured externally; some have the dead zone protection function, but the hardware circuit is complicated, and the built-in board layer is mainly PCB or the size is large.

Images