DRV8818A中文资料具有 1/8 微步进、STEP/DIR 接口和智能调优技术的 35V、2.5A 步进电机驱动器数据手册TI规格书

描述 Description

The DRV8818A provides an integrated stepper motor driver for printers, scanners, and other automated equipment applications. The device has two H-bridge drivers and 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/DIR interface allows controller circuits to be easily interfaced. The mode pins allow for 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.

The DRV8818A is packaged in a 28-pin HTSSOP package with PowerPAD™.

特性 Features

• Stepper motor driver
• Up to 1/8 microstepping indexer
• 8V to 35V operating supply voltage range
• High current capacity: 2.5A full-scale, 1.8A RMS
• Separate logic supply voltage (VCC)
• DRV8818: 35V, 370mΩ HS+LS
• Thermally-enhanced surface mount package
• VM Undervoltage Lockout (UVLO)
• Thermal Shutdown (TSD)
• Indexer zero position output (HOMEn)