Motor driver chip and driver module

What are motor driver chips and driver modules?

The motor driver chip is a chip integrated with CMOS control circuit and DMOS power device, which can form a complete motion control system with the main processor, motor and incremental encoder. It can be used to drive inductive loads such as DC motors, stepping motors and relays.

Motor driver modules usually include transistor module, thyristor (thyristor) module and IGBT module. Of course, integrated drive modules are also used for small micro-special motors.

Main functions

The motor driver chip is controlled by standard TTL logic level signal, and has two enabling control terminals to allow or prohibit the device from working without being affected by input signals, and a logic power input terminal to make the internal logic circuit work at low voltage. An external detection resistor can be used to feed back the variation to the control circuit.

The driver circuit is to convert the signal from the information electronic circuit into a signal which can be applied between the control terminal and the common terminal of the power electronic device to turn it on or off according to the requirements of its control target.

For semi-controlled devices, it is only necessary to provide on-control signals, while for fully-controlled devices, it is necessary to provide both on-control signals and off-control signals, so as to ensure that the devices can be turned on or off reliably as required.