Motor Controller. DRV8824 Datasheet

DRV8824 Controller. Datasheet pdf. Equivalent

Part DRV8824
Description Stepper Motor Controller
Feature Product Folder Sample & Buy Technical Documents Tools & Software Support & Community DRV8824 SL.
Manufacture etcTI
Datasheet
Download DRV8824 Datasheet



DRV8824
Product
Folder
Sample &
Buy
Technical
Documents
Tools &
Software
Support &
Community
DRV8824
SLVSA06J – OCTOBER 2009 – REVISED JULY 2014
DRV8824 Stepper Motor Controller IC
1 Features
1 PWM Microstepping Stepper Motor Driver
– Built-In Microstepping Indexer
– Up to 1/32 Microstepping
• Multiple Decay Modes:
– Mixed Decay
– Slow Decay
– Fast Decay
• 8.2-V to 45-V Operating Supply Voltage Range
• 1.6-A Maximum Drive Current at 24 V and
TA = 25°C
• Simple STEP/DIR Interface
• Low-Current Sleep Mode
• Built-In 3.3-V Reference Output
• Small Package and Footprint
• Protection Features:
– Overcurrent Protection (OCP)
– Thermal Shutdown (TSD)
– VMx Undervoltage Lockout (UVLO)
– Fault Condition Indication Pin (nFAULT)
2 Applications
• Automatic Teller Machines
• Money Handling Machines
• Video Security Cameras
• Printers
• Scanners
• Office Automation Machines
• Gaming Machines
• Factory Automation
• Robotics
3 Description
The DRV8824 provides an integrated motor driver
solution for printers, scanners, and other automated
equipment applications. The device has two H-bridge
drivers and a microstepping indexer, and is intended
to drive a bipolar stepper motor. The output driver
block consists of N-channel power MOSFETs
configured as full H-bridges to drive the motor
windings. The DRV8824 is capable of driving up to
1.6 A of current from each output (with proper
heatsinking, at 24 V and 25°C).
A simple STEP/DIR interface allows easy interfacing
to controller circuits. Mode pins allow for configuration
of the motor in full-step up to 1/32-step modes. Decay
mode is configurable so that slow decay, fast decay,
or mixed decay can be used. A low-power sleep
mode is provided which shuts down internal circuitry
to achieve very-low quiescent current draw. This
sleep mode can be set using a dedicated nSLEEP
pin.
Internal shutdown functions are provided for
overcurrent, short circuit, undervoltage lockout, and
over temperature. Fault conditions are indicated
through the nFAULT pin.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
DRV8824
HTSSOP (28)
QFN (28)
9.70 mm × 6.40 mm
5.00 mm × 5.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
4 Simplified Schematic
8.2 to 45 V
Microstepping Current Waveform
STEP
DIR
Decay Mode
Step Size
nFAULT
DRV8824
1.6 A
Stepper Motor
Driver
1/32 µstep
1.6 A
M
+±
1
STEP Input
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.



DRV8824
DRV8824
SLVSA06J – OCTOBER 2009 – REVISED JULY 2014
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Simplified Schematic............................................. 1
5 Revision History..................................................... 2
6 Pin Configuration and Functions ......................... 3
7 Specifications......................................................... 4
7.1 Absolute Maximum Ratings ...................................... 4
7.2 Handling Ratings....................................................... 4
7.3 Recommended Operating Conditions....................... 4
7.4 Thermal Information .................................................. 5
7.5 Electrical Characteristics........................................... 6
7.6 Timing Requirements ................................................ 7
7.7 Typical Characteristics .............................................. 8
8 Detailed Description .............................................. 9
8.1 Overview ................................................................... 9
8.2 Functional Block Diagram ....................................... 10
8.3 Feature Description................................................. 11
8.4 Device Functional Modes........................................ 18
9 Application and Implementation ........................ 19
9.1 Application Information............................................ 19
9.2 Typical Application .................................................. 19
10 Power Supply Recommendations ..................... 22
10.1 Bulk Capacitance .................................................. 22
10.2 Power Supply and Logic Sequencing ................... 22
11 Layout................................................................... 23
11.1 Layout Guidelines ................................................. 23
11.2 Layout Example .................................................... 23
12 Device and Documentation Support ................. 24
12.1 Trademarks ........................................................... 24
12.2 Electrostatic Discharge Caution ............................ 24
12.3 Glossary ................................................................ 24
13 Mechanical, Packaging, and Orderable
Information ........................................................... 24
5 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision I (June 2014) to Revision J
Page
• Updated images on the front page ........................................................................................................................................ 1
• Update the continuous motor drive output current value in Absolute Maximum Ratings ...................................................... 4
• Updated typical tDEG time ....................................................................................................................................................... 6
• Updated text and equations in Detailed Design Procedure ................................................................................................. 20
• Updated Bulk Capacitance and image ................................................................................................................................. 22
Layout Example image updated. ......................................................................................................................................... 23
Changes from Revision H (December 2013) to Revision I
Page
• Updated data sheet to new TI standard: added sections and rearranged material .............................................................. 1
• Updated pin description for AVREF and BVREF .................................................................................................................. 3
• Added power supply ramp rate to Absolute Maximum Ratings ............................................................................................ 4
• Added minimum voltage for VIL and removed typical ............................................................................................................. 6
• Updated parameter descriptions in Timing Requirements and tWAKE minimum and maximum ............................................. 7
Changes from Revision G (August 2013) to Revision H
Page
• Changed in Electrical Characteristics table, section DECAY INPUT third row ...................................................................... 6
2
Submit Documentation Feedback
Product Folder Links: DRV8824
Copyright © 2009–2014, Texas Instruments Incorporated





@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site (Privacy Policy & Contact)