The relationship between the motor driver IC and the motor device

2025.01.28

Do you now understand the role of the motor driver? Next, we will explain how motor drivers and motor devices are related.

The following components are used in describing motor devices.

*Motor driver IC
*Motor driver circuit, which consists of the motor driver IC and peripheral components
*Motor that operates when an electric current is applied to both the motor driver circuit and the motor mechanism
*Equipment on which the motor is mounted

Please read the explanation while understanding these names.

A motor driver IC cannot do anything by itself; it can only rotate a motor when the IC is mounted on a motor driver circuit, receives power from a power supply, and connects to the winding coil of a motor. The motor driver circuit’s task is to efficiently convert electric power into rotational force and to extract the full potential of the motor mechanism. (It should be kept in mind that it is difficult to extract performance beyond the characteristics of the motor mechanism.)

The motor, made up of the motor driver circuit and motor structure, exhibits high efficiency, low vibration, and low noise characteristics. In turn, these characteristics are reflected as energy-saving and quietness of the equipment after the motor is integrated into the equipment. In other words, the driving capability of the motor driver circuit affects the performance of the equipment. In addition, motor drivers must take into account both electrical reliability and mechanical reliability of the motor.

There exists the idea that “you can’t control without knowing what you are controlling.” Therefore, in order to make a motor driver, it is necessary to know the motor mechanism, the principle of rotation, and the usage on motor-mounted equipment. In the following sections, we will explain the basic principles of motor operation, motor control methods, and circuit configuration.

Key points of this article

・Understanding the relationship between motor driver IC, motor driver circuit with driver IC and peripheral components, motor with driver circuit and motor mechanism, and motor mounted equipment.

・As the concept of “you cannot control without knowing what you are controlling” suggests, it is necessary to know the motor mechanism, principle of rotation, usage in motor mounted equipment, and their requirements in order to create a motor driver.

Teacher Sugiken’s Motor Library

Teacher Sugiken’s Motor Driver Dojo

An Introduction to Motors

An Introduction to Motors

Brushless Mortor Driver

What Is a Brushless Motor Driver?

Motor Q&A