TI DRV8818步进马达驱动解决方案.docx

TI DRV8818 步进马达驱动解决方案关键字:工业控制,马达驱动 TI公司的 DRV881 8是用于打印机,扫描仪和其它自动化设备的步进马达驱动器,集成了两个 PWM, 可提供 1/8步操作,每个绕组的电流高达 , 主要用在打印机, 纺织机械,定位/跟踪, DRV881 8主要特性,方框图和马达驱动电路以及评估模块 DRV8818EVM 方框图,电路图和材料清单. The DRV8818 provides an integrated stepper motor driver solution for printers, scanners, and other automated equipment applications. The device has two H-bridge drivers, as well as microstepping indexer logic to control a stepper motor. The output driver block for each consists of N-channel power MOSFETs configured as full H-bridges to drive the motor windings. A simple step/direction interface allows easy interfacing to controller circuits. Pins allow configuration of the motor in full-step, half-step, quarter-step, or eighth-step modes. Decay mode and PWM off time are programmable. Internal shutdown functions are provided for over current protection, short circuit protection, under-voltage lockout and overtemperature. DRV8818 主要特性: Pulse Width Modulation (PWM) Microstepping Motor Driver Built-In Microstepping Indexer Up to -A Current Per Winding Microstepping Indexer Provides up to 1/8-Step Operation Low - Ω(HS + LS) MOSFET On-Resistance (at 25 °) Programmable Mixed Decay, Blanking, and Off Time patible Upgrade to DRV8811 With Lower R ds(on) Thermally Enhanced Surface Mount Package DRV8818 应用:? Printers ? Textile Machinery