Motor Motion Ignition Controllers Drivers DRV8823DCA DRV8823DCAR DRV8871DDA

DRV8823DCA DRV8823DCAR HTSSOP Electronic Integrated Circuits Motor / Motion / Ignition Controllers & Drivers

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1 Features

PWM Motor Driver With Four H-Bridges
Drives Two Stepper MotorsOne Stepper and
Two DC Motors.or Four DC Motors
Up to 1.5-A Current Per Winding
Low On-Resistance
- Programmable Maximum Winding Current
- Three-Bit Winding Current Control Allows up to
Eight Current Levels
- Selectable Slow or Mixed Decay Modes
8-to 32-V Operating Supply Voltage Range
Internal Charge Pump for Gate Drive
Built-in 3.3-V Reference
Serial Digital Control Interface
Fully Protected Against Undervoltage
Overtemperature,and Overcurrent Events
Thermally-Enhanced Surface Mount Package

2 Applications

Printers
Scanners
Office Automation Machines
Gaming Machines
FactoryAutomation
.Robotics

The DRV8823 is a dual stepper motor driver solution for applications that require independent control of two different motors. The device integrates four NMOS H-bridges, a microstepping indexer, and various fault protection features. The DRV8823 can be powered with a supply voltage between 8 and 32 V, and is capable of providing an output current up to 1.5 A full scale. Actual full-scale current will depend on ambient temperature, supply voltage and PCB ground size. A serial data interface is included to control all functions of the motor driver. Current regulation through all four Hbridges is achieved using three register bits per H-bridge. The three register bits are used to scale the current in each bridge as a percentage of the full-scale current set by VREF input pin and sense resistor. The current regulation is configurable with two different decay modes, fixed slow and mixed. The gate drive to each FET in all four H-Bridges is controlled to prevent any cross-conduction (shoot through current) during transitions.