• - 交流-直流(AC-DC)控制器和稳压器
• - 直流-直流(DC-DC)控制器、转换器和稳压器
• - 电压和电流管理
• - 通讯IC
• - 驱动器
• - 热管理

• - 时钟及数据分配
• - 标准逻辑

• - 放大器和比较器
• - 模拟开关
• - 数字电位计
• - 接口
• - EMI和RFI滤波器

• - EEPROM存储器
• - 非易失性只读存储器(NVRAM)
• - SRAM存储器

说明

The DRV8815 and DRV8816 provide integrated control and a power stage to drive small brushless DC motors such as those used in polygon scanners in laser printers.

Speed is regulated using a clock input, which is frequency-locked to the motor rotation. An internal speed differentiator, digital integrator, and filter complete the speed control loop, which eliminates many external components. Adjustment of the speed control circuitry is via EEPROM programming, which can be set at the factory, or through a serial interface. Use of the serial interface is not required for normal device operation. Alternately, an externally generated PWM input can be supplied to directly control the duty cycle of the output stage.

Hall sensor comparators are integrated, as well as a linear regulator to provide power to the hall sensors.

特性

• Three-Phase Brushless DC Motor Controller With Integrated Power Stage
  • Internal Power Stage Drives 1-A Average and 3-A Peak Output Current
  • Low 600-mΩ Rds(on) FETs
  • Integrated Speed Control With Internal Digital Integrator and Filter
    Requires Minimal External Components
  • Direct PWM Input Mode for Direct Control
  • Hall Sensor Comparators
• 5-V Linear Regulator to Provide Hall Sensor Power
• 12-V to 30-V Operating Voltage Range
• Serial Programming Interface (DRV8815 Only)
• FAULTn Output (DRV8815 Only)
• Thermally Enhanced Surface Mount Package
• Fully Protected Against Undervoltage, Overcurrent, Overtemperature and
  Stalled Rotor Conditions
• APPLICATIONS
  • Laser Printer Polygon Scanner Motor Drivers
  • Projector Colorwheel Motor Drivers
  • Bar Code Scanners

PowerPAD Is a trademark of Texas Instruments