DRV8885 Driver Datasheet

DRV8885 Datasheet, PDF, Equivalent


Part Number

DRV8885

Description

1.5-A Stepper Motor Driver

Manufacture

etcTI

Total Page 30 Pages
Datasheet
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DRV8885
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DRV8885
SLVSD39C – OCTOBER 2015 – REVISED NOVEMBER 2018
DRV8885 1.5-A Stepper Motor Driver With Integrated Current Sense
1 Features
1 PWM Microstepping Stepper Motor Driver
– Up to 1/16 Microstepping
– Non-Circular and Standard ½ Step Modes
• Integrated Current Sense Functionality
– No Sense Resistors Required
– ±6.25% Full-Scale Current Accuracy
• Slow and Mixed Decay Options
• 8.0- to 37-V Operating Supply Voltage Range
• Low RDS(ON): 0.86 Ω HS + LS at 24 V, 25°C
• High Current Capacity
– 1.5-A Full Scale per Bridge
– 1.0-A rms per Bridge
• Fixed Off-Time PWM Chopping
• Simple STEP/DIR Interface
• Low-Current Sleep Mode (20 μA)
• Small Package and Footprint
– 24 HTSSOP PowerPAD™ Package
– 28 WQFN Package
• Protection Features
– VM Undervoltage Lockout (UVLO)
– Charge Pump Undervoltage (CPUV)
– Overcurrent Protection (OCP)
– Thermal Shutdown (TSD)
– Fault Condition Indication Pin (nFAULT)
2 Applications
• Multi-Function Printers and Scanners
• Laser Beam Printers
• 3D Printers
• Automatic Teller and Money Handling Machines
• Video Security Cameras
• Office Automation Machines
• Factory Automation and Robotics
3 Description
The DRV8885 is a stepper motor driver for industrial
equipment applications. The device has two N-
channel power MOSFET H-bridge drivers, a
microstepping indexer, and integrated current sense.
The DRV8885 is capable of driving up to 1.5 A full
scale or 1.0 A rms output current (depending on
proper PCB ground plane for thermal dissipation and
at 24 V and TA = 25°C).
The DRV8885 integrated current sense functionality
eliminates the need for two external sense resistors.
The STEP/DIR pins provide a simple control
interface. The device can be configured in full-step up
to 1/16 step modes. A low-power sleep mode is
provided for very-low quiescent current standby using
a dedicated nSLEEP pin.
Internal protection functions are provided for
undervoltage, charge pump faults, overcurrent, short
circuits, and overtemperature. Fault conditions are
indicated by an nFAULT pin.
Simplified Schematic
8 to 37 V
STEP/DIR
Step size
Decay mode
DRV8885
Stepper
Motor
Driver
1.5 A
M
+±
Current Sense 1.5 A
1/16 µstep
Copyright © 2016, Texas Instruments Incorporated
Device Information (1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
DRV8885
HTSSOP (24)
WQFN (28)
7.80 mm × 4.40 mm
5.50 mm × 3.5 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Microstepping Current Waveform
Full-scale current
RMS current
AOUT
BOUT
Step Input
1
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.

DRV8885
DRV8885
SLVSD39C – OCTOBER 2015 – REVISED NOVEMBER 2018
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Pin Configuration and Functions ......................... 3
6 Specifications......................................................... 4
6.1 Absolute Maximum Ratings ...................................... 4
6.2 ESD Ratings.............................................................. 4
6.3 Recommended Operating Conditions....................... 5
6.4 Thermal Information .................................................. 5
6.5 Electrical Characteristics........................................... 6
6.6 Indexer Timing Requirements................................... 8
6.7 Typical Characteristics .............................................. 9
7 Detailed Description ............................................ 11
7.1 Overview ................................................................. 11
7.2 Functional Block Diagram ....................................... 12
7.3 Feature Description................................................. 13
7.4 Device Functional Modes........................................ 26
8 Application and Implementation ........................ 27
8.1 Application Information............................................ 27
8.2 Typical Application .................................................. 27
9 Power Supply Recommendations...................... 30
9.1 Bulk Capacitance ................................................... 30
10 Layout................................................................... 31
10.1 Layout Guidelines ................................................. 31
10.2 Layout Example .................................................... 31
11 Device and Documentation Support ................. 32
11.1 Documentation Support ........................................ 32
11.2 Receiving Notification of Documentation Updates 32
11.3 Community Resources.......................................... 32
11.4 Trademarks ........................................................... 32
11.5 Electrostatic Discharge Caution ............................ 32
11.6 Glossary ................................................................ 32
12 Mechanical, Packaging, and Orderable
Information ........................................................... 32
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision B (July 2018) to Revision C
Page
• Changed device status from Advance Information to Production Data.................................................................................. 1
Changes from Revision A (April 2016) to Revision B
Page
• Added the WQFN package option.......................................................................................................................................... 1
• Deleted and internal indexer from the description of the ENABLE pin in the Pin Functions table......................................... 3
• Changed until ENABLE is deasserted to until ENABLE is asserted in the Device Functional Modes section .................... 26
• Added the Receiving Notification of Documentation Updates section ................................................................................. 32
Changes from Original (October 2015) to Revision A
Page
• Updated peak drive current based on OCP ........................................................................................................................... 4
• Updated RPD and RPU values ................................................................................................................................................. 6
• Fixed chopping current equation .......................................................................................................................................... 18
• Added "Controlling RREF with a PWM Resource"............................................................................................................... 18
• Fixed resistance values in tri-level input pin diagram........................................................................................................... 24
2 Submit Documentation Feedback
Product Folder Links: DRV8885
Copyright © 2015–2018, Texas Instruments Incorporated


Features Product Folder Order Now Technical Doc uments Tools & Software Support & Com munity DRV8885 SLVSD39C – OCTOBER 20 15 – REVISED NOVEMBER 2018 DRV8885 1. 5-A Stepper Motor Driver With Integrate d Current Sense 1 Features •1 PWM Mi crostepping Stepper Motor Driver – Up to 1/16 Microstepping – Non-Circular and Standard ½ Step Modes • Integra ted Current Sense Functionality – No Sense Resistors Required – ±6.25% Fu ll-Scale Current Accuracy • Slow and Mixed Decay Options • 8.0- to 37-V Op erating Supply Voltage Range • Low RD S(ON): 0.86 Ω HS + LS at 24 V, 25°C High Current Capacity – 1.5-A Full Scale per Bridge – 1.0-A rms per Bri dge • Fixed Off-Time PWM Chopping • Simple STEP/DIR Interface • Low-Curr ent Sleep Mode (20 μA) • Small Packa ge and Footprint – 24 HTSSOP PowerPAD ™ Package – 28 WQFN Package • Pro tection Features – VM Undervoltage Lo ckout (UVLO) – Charge Pump Undervolta ge (CPUV) – Overcurrent Protection (OCP) – Thermal Shutdown (TSD) – Fault Condition Indication Pin (nFAULT) 2 Appli.
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