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DC coreless brush motor driving circuit design

DC coreless brush motor, which is DC Coreless Brush Motor, through the coil rotation, belonging to the outer rotor, large torque, the characteristics of the motor, the linear voltage height, determine the speed, common brush motor, to be current decision speed, Phase motor, through the six-step square wave, PWM speed, relatively speaking, the hollow cup motor, linear voltage, constant current, adjustable speed, and has a very stable rotation characteristics, making it a certain market positioning, Speed, and the stability of ultra-high rotation, vibration, RPM: 8000 ~ 60000 rpm, common in mobile phone vibration / four-axis aircraft / adult electric toys / medical equipment / precision grinding equipment.In recent years, more and more people, From the original toys, mobile applications, to industrial applications.

Basically, the motor does not need to be too complex circuit drive, given the rated voltage will be linearly adjust the speed, but consider other factors, such a drive design, but necessary to exist.For example, multi-axis aircraft, need to control different Motor speed, in order to achieve air balance requirements. Hand tool over-current protection, but it is worth noting that the hollow cup motor, not alone with an adjustable step-down IC, simple direct drive, in some current conditions, IC Overheating burned out, resulting in product yield and life issues, or to a professional drive circuit, for protection, the product was safe and reliable.

1. High and low linear voltage control.
2. Over-current protection design
3. Temperature considerations
4. Automation





DC coreless brush motor driving circuit design -Aceup Technology



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