As energy-saving becomes the focus of the world, motor design efficiency has become an interesting problem. Motor drive products with the trend of the development of the industry, to help designers to improve energy efficiency, reducing energy consumption, improve reliability and reduce the number of components, etc., play a positive role in realize energy saving.

Motor market development trend

After one hundred years of development, application fields of the motor has a very wide range. Various semiconductor motor driven products covering areas such as automotive and industrial applications, it is a microcosm of motor main trends in the market.

First is the trend of electrification, the car manufacturing business integration of energy-efficient motor instead of traditional internal combustion engine power, usually replace belt with brushless dc motor (BLDC) motors and gear drive, to be used under the hood of auxiliary components, such as pump, valve, heating and air conditioning, fan, etc. Due to the BLDC motor has very excellent performance motors, also begin to enter traditionally use a brush dc motor (data) solution of other applications.

Another trend is the application rate of ascension to increase the number of the installation of the motor assembly, such as motor heating ventilation and air conditioning (HVAC) air valve control (mainly used for brush dc and unipolar stepper motor) are applied to the lower-end cars HVAC system.

BLDC motor in the application of industrial and telecommunications motors is becoming more and more popular. Typical applications include fan, blower, pump and compressor. BLDC motor can effect comparing ac motor or motors switched reluctance motor is higher. BLDC motor can realize low cost variable speed motors, especially sensor commutation algorithm was used to integrate, able to dispense external sensors.

Energy saving trend of the new motor driver application requirements

Energy costs are usually motor of the most important part of the whole life cycle cost. Therefore, the use of more efficient motor can save a lot of energy.

Energy saving trend of the motor drive new requirements include several aspects, first, the efficiency is decided by motor technology and structure of the selected, so the can choose converts electrical energy into mechanical energy ratio up to the top of the motor. Next, want to choose to drive to minimize power consumption and efficient drive circuit. Third, motor driver intelligence through ascension to realize optimization of energy consumption.

In addition, some applications also require system does not use a brush motor step or brushless dc motor (using); And use the sensorless commutation (do not use the potentiometer or hall sensors feedback), embedded motion control algorithm (used for low power applications), will be the highest energy efficiency mentioned, audible noise reduction, improve the electromagnetic interference (EMC) performance, etc. In addition, there are some applications need to drive circuit and motor is adjacent to deploy on the electromechanical actuator, and through the bus (LIN, I2C, etc.) connected to the central control unit.

Various semiconductor improve the energy efficiency motor design innovative solutions

In fast, accurate and dynamic motion control applications, the stepper motor is more and more popular a kind of choice. With the development of electrical technology, intelligent driver/controller for standard products (ASSP), also able to effectively drive the motor. The device provides designers with more flexible solutions, created the innovation function space, and found many new applications.

1. The bipolar stepper motor driver and controller

Ansion beauty of the development of semiconductor AMIS AMIS - 30623-3062 - x series is efficient drive in the electromechanical actuator bipolar stepper motor driver and controller. This product into the special finite state machine and advanced headlamps system (AFS) system requirements of local interconnect network (LIN) instruction set. The device integrates the sensor control detection function, can improve the reliability, reduce the amount of components and board space, reduce the product cost. AMIS - 30623 specially designed for remote and multi-axis positioning applications, the sensor control detection designers can easily complete accurate positioning and semi-closed cycle operation.

AMIS - 30623 LIN interface make it is suitable for the need to connect to a remote LIN, a host of machinery and electronics solutions. The goal of this product applications include level measurement, automatic headlamp HVAC design, surveillance camera control