DRV8818PWPR Power Path Management IC Motor / Motion / Ignition Controllers & Drivers 2.5A Bipolar Stepper Motor Driver

1 Features

• Pulse Width Modulation (PWM) Microstepping Motor Driver

• – Built-In Microstepping Indexer

• – Up to 8 Microsteps/Step

• – Step and Direction Control

• – Programmable Mixed Decay, Blanking, and Off Time

• Up to 2.5-A Current Per Winding

• Low 0.37-Ω (HS + LS) MOSFET RDS(ON) (25°C)

• 8-V to 35-V Operating Supply Voltage Range

• Pin to Pin Upgrade for DRV8811 With Lower

  RDS(ON)

• Thermally-Enhanced Surface Mount Package

• Protection Features

  • – VM Undervoltage Lockout (UVLO)

  • – Overcurrent Protection (OCP)

  • – Thermal Shutdown (TSD)

    
    

2 Applications

• Printers

• Textile Machinery

• Positioning/Tracking

• Factory Automation

• Robotics

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. 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 DRV8818 is packaged in a 28-pin HTSSOP package with PowerPADTM.

Device Information