DRV8821 32-V, 1.5-A dual bipolar stepper motor driver with current regulation and 1/8 microstepping   | TI.com

DRV8821
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32-V, 1.5-A dual bipolar stepper motor driver with current regulation and 1/8 microstepping  

 

Recommended alternative parts

  • DRV8885  -  The DRV8885 is a single-channel stepper driver with integrated microstepping up to 1/16 and Integrated Current Sensing

Description

The DRV8821 provides a dual microstepping-capable stepper motor controller/driver solution for printers, scanners, and other office automation equipment applications.

Two independent stepper motor driver circuits include four H-bridge drivers and microstepping-capable indexer logic. Each of the motor driver blocks employ N-channel power MOSFETs configured as an H-bridge 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, and the selection of slow or mixed decay modes.

Internal shutdown functions are provided for over current protection, short-circuit protection, undervoltage lockout, and overtemperature.

The DRV8821 is packaged in a 48-pin HTSSOP package (Eco-friendly : RoHS & no Sb/Br).

Features

  • Dual PWM Microstepping Motor Driver
    • Built-In Microstepping Indexers
    • Up to 1.5-A Current Per Winding
    • Three-Bit Winding Current Control
      Allows up to Eight Current Levels
    • Low MOSFET On-Resistance
    • Selectable Slow or Mixed Decay Modes
  • 8-V to 32-V Operating Supply Voltage Range
  • Internal Charge Pump for Gate Drive
  • Built-in 3.3-V Reference
  • Simple Step/Direction Interface
  • Fully Protected Against Undervoltage,
    Overtemperature, and Overcurrent
  • Thermally-Enhanced Surface Mount Package

Parametrics

Compare all products in Stepper motor drivers Email Download to Excel
Part number Order Number of full bridges Vs (Min) (V) Vs (Max) (V) Full-scale current (A) Peak output current (A) RDS(ON) (HS + LS) (mOhms) Control mode Control interface Micro-stepping levels Features Package size: mm2:W x L (PKG) Approx. price (US$)
DRV8821 Order now 4     8     32     1.5     1.5     550     STEP/DIR     Hardware (GPIO)     8     Current Regulation     48HTSSOP: 101 mm2: 8.1 x 12.5 (HTSSOP | 48)     1.76 | 1ku    
DRV8823 Order now 4     8     32     1     1.5     550     Serial     Serial     8     Current Regulation     48HTSSOP: 101 mm2: 8.1 x 12.5 (HTSSOP | 48)     1.76 | 1ku    
DRV8886 Order now 2     8     37     2     3     550     STEP/DIR     Hardware (GPIO)     16     Current Regulation
Integrated Current Sensing    
24HTSSOP: 34 mm2: 4.4 x 7.8 (HTSSOP | 24)
28WQFN: 19 mm2: 3.5 x 5.5 (WQFN | 28)    
1.33 | 1ku