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Freescale 的电机解决方案

关键词:同步电机 无刷直流电机 MC33937A

时间:2013-09-11 10:15:42       作者:Freescale       来源:中电网

Keyword:  Synchronous Motor ,BLDC , MC33937A

摘要: 可以使用塔式系统设计TWR-MC-LV3PH的的低电压3相电机控制模块实现三相无刷直流(BLDC)和永磁同步电机(PMSM)电机控制功能。并且此外设模块,能够提供有效的塔式系统开发工具,一个完整的电机控制参考设计工具包,包括一个BLDC电机

基本特性:

The 33937A is a Field Effect Transistor (FET) pre-drivers designed for three phase motor control and similar applications. The integrated circuit (IC) uses SMARTMOS? technology.

The IC contains three High Side FET pre-drivers and three Low Side FET pre-drivers.Three external bootstrap capacitors provide gate charge to the High Side FETs.

The IC interfaces to a MCU via six direct input control signals, an SPI port for device setup and asynchronous reset, enable and interrupt signals. Both 5.0 and 3.0 V logic level inputs are accepted and 5.0 V logic level outputs are provided.

方案介绍:

The 3-phase Low Voltage Motor Control board (TWR-MCLV3PH) is a peripheral Tower System Module. With one of the available MCU tower modules accommodating a selected microcontroller it provides a ready-made, softwaredevelopment platform for one-third horsepower off-line motors. Feedback signals are provided that allow a variety of algorithms to control 3-phase PMSM and BLDC motors.

The TWR-MC-LV3PH module features:

• Power supply voltage input 12-24 VDC, extended up to 50 V (see Electrical Characteristics for details)
• Output current up to 8 amperes (A)
• Power supply reverse polarity protection circuitry
• 3-phase bridge inverter (6-MOSFET’s)
• 3-phase MOSFET gate driver with over current and under voltage protection
• 3-phase and DC bus-current-sensing shunts
• DC bus-voltage sensing
• 3-phase back-EMF voltage sensing circuitry
• Low-voltage on-board power supplies
• Encoder/Hall sensor sensing circuitry
• Motor power and signal connectors
• User LED, power-on LED, and 6 PWM LED diodes

参考原理图:


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