CHEN RUI KE Electronic Company Limited

Motor (commonly known as "motor") refers to a kind of electromagnetic device that realizes the conversion or transmission of electric energy according to the law of electromagnetic induction. Its main function is to generate driving torque, as a power source for electrical appliances or various machinery. A coil is placed in a magnetic field, and through the flowing current, the coil will be repounded by the magnetic pole on one side and attracted by the magnetic pole on the other side, constantly rotating under this effect. In the process of rotation, the current leading to the coil is reversed, so that it continues to rotate. This is how the most basic motor works. BLDC motor BLDC motor "BL" that is "Brushless", translated as brushless. That is, the "brush" in the DC motor is gone. The role of the brush in the DC motor is to pass electricity through the commutator to the coil in the rotor. So how does a BLDC motor without a brush electrize the coil in the rotor? BLDC motor uses permanent magnet to make the rotor, there is no coil in the rotor. Since there is no coil in the rotor, there is no need for commutators and brushes for power supply. Instead, a coil is used as a stator. The BLDC motor controls the rotor rotation by controlling the direction and magnitude of the current leading to the coil. Advantages of BLDC motors and the first advantage of applying BLDC motors is "high efficiency". It can keep the gyroscopic force (torque) at the maximum value at all times. The maximum torque of the DC motor can only be maintained for an instant during the rotation process, and it cannot always maintain the maximum value. If the DC motor wants to get the same torque as the BLDC motor, it can only increase its magnet. This is the reason why small BLDC motors can also emit powerful forces. The second trait, related to the first, is "good control." The BLDC motor can accurately feedback the target rotation number, torque, etc. The heating and power consumption of the motor can be restrained by precise control. If it is battery-powered, it can extend the driving time through careful control. The above two points are the advantages brought by the brushless and commutator. In addition, BDLC has the characteristics of durability and low electrical noise. If you do not want to use the process of noise, the use of BLDC motor can be achieved. According to Grand View Research, the BLDC market could reach $22.3 billion in 2025. As the technology tends to mature, BLDC motor has been widely used in military, aviation, industry, automobile, civil control system, and home appliances and other fields. Low voltage and small power devices are common, such as small robots, drones, electric bicycles, vacuum cleaners, power tools, etc. As the world's leading high performance analog chip manufacturer, Siliconjet has the leading technology and numerous chip solutions in various fields such as automotive electronics, industrial control, communication and computing, and consumer electronics. SY67343 is a new generation of three-phase non-inductive sinusoidal motor driver chip launched by Silicatrix. It uses a built-in MOS, runs a maximum drive current of 2A, and supports a variety of motor types, such as permanent magnet synchronous motor, brushless DC motor, etc. In addition, SY67343 also supports a variety of protection functions, such as over-current protection, under-voltage protection and over-temperature protection, etc., to fully ensure the safety of the motor and the chip in the use of the process.