Texas Instruments DRV8308 三相无刷直流电机控制器
德州仪器 DRV8308 无刷直流电机控制器是一款三相半桥前置驱动器，此驱动器在由单电源供电的情况下能够将高达 130mA 的电流驱动进 6 个 N 类型 MOSFET 中。针对传感式三相无刷直流电机，此前置驱动器包括可配置数字速度环路、速度控制和换相模式，用以优化电机性能。经适当调节，DRV8308 器件能够以少于 0.1% 的周期抖动和快速转矩补偿来驱动电机。借助可编程增益和环路滤波器，集成数字速度环路可以使电机在负载变化时保持速度。可调转换率也能够降低开关噪声，并且改进电磁兼容性 (EMC)。DRV8308 器件还借助延迟调节功能支持 120° 和 180° 换相模式，以增加功效。为实现高性能系统，使用了正弦(180°)换相模式，最大限度地减少了可闻噪声和转矩纹波。一旦通过三个霍尔传感器相位至仅仅一个霍尔传感器的切换达到恒定速度，由非理想霍尔元件放置方式和匹配导致的抖动可被消除。
特性
- Three-phase brushless DC motor controller
- Fully digital speed loop with programmable gain and loop filters
- Clock input or PWM inputs for speed control
- Operating supply voltage 8.5 to 32V
- Drives 10 to 130mA gate-drive current to 6 N-channel MOSFETs with adjustable slew rates
- Flexible configuration methods
- Serial control
- Internal OTP memory
- External EEPROM
- Supports sensor-based sinusoidal and trapezoidal commutation control with tunable delay
- 5V linear regulator and switched power output for Hall sensors
- SPI control interface
- Low-power standby mode
- Locked rotor detection and restart
- Integrated overcurrent, overvoltage, and overtemperature protection
- 6 × 6mm QFN package, 0.5mm pitch
应用
- Pumps and industrial equipment
- Currency counters
- Printers
Simplified Schematic
Evaluation Module
Texas Instruments DRV8308EVM Evaluation Module serves as a user-friendly evaluation kit that allows users to control the DRV8308 and motors through a Windows graphical user interface. The EVM is a high-performance, power-efficient, cost-effective platform that speeds development for quicker time to market. Applications include pumps, industrial equipment, currency counters, and printers. Included is a TelcoMotion DT4260-24-055-04H-TI motor, which uses TI's latest Hall effect sensor technology, the DRV5013.
发布日期: 2014-09-09
| 更新日期: 2022-03-11