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DRV8424/25 Stepper Drivers With Integrated Current Sense, 1/256 Microstepping, STEP/DIR Interface and smart tune Technology
SLOSE59C
May 2020 – July 2022
DRV8424
,
DRV8425
PRODUCTION DATA
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DRV8424/25 Stepper Drivers With Integrated Current Sense, 1/256 Microstepping, STEP/DIR Interface and smart tune Technology
1
Features
2
Applications
3
Description
4
Revision History
Device Comparison Table
5
Pin Configuration and Functions
6
Specifications
6.1
Absolute Maximum Ratings
6.2
ESD Ratings
6.3
Recommended Operating Conditions
6.4
Thermal Information
6.5
Electrical Characteristics
6.6
Indexer Timing Requirements
6.7
Typical Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
Stepper Motor Driver Current Ratings
7.3.1.1
Peak Current Rating
7.3.1.2
RMS Current Rating
7.3.1.3
Full-Scale Current Rating
7.3.2
PWM Motor Drivers
7.3.3
Microstepping Indexer
7.3.4
Controlling VREF with an MCU DAC
7.3.5
Current Regulation
7.3.6
Decay Modes
7.3.6.1
Slow Decay for Increasing and Decreasing Current
7.3.6.2
Slow Decay for Increasing Current, Mixed Decay for Decreasing Current
7.3.6.3
Mixed Decay for Increasing and Decreasing Current
7.3.6.4
Smart tune Dynamic Decay
7.3.6.5
Smart tune Ripple Control
7.3.6.6
PWM OFF Time
7.3.6.7
Blanking time
7.3.7
Charge Pump
7.3.8
Linear Voltage Regulators
7.3.9
Logic Level, tri-level and quad-level Pin Diagrams
7.3.10
nFAULT Pin
7.3.11
Protection Circuits
7.3.11.1
VM Undervoltage Lockout (UVLO)
7.3.11.2
VCP Undervoltage Lockout (CPUV)
7.3.11.3
Overcurrent Protection (OCP)
7.3.11.3.1
Latched Shutdown
7.3.11.3.2
Automatic Retry
7.3.11.4
Thermal Shutdown (OTSD)
7.3.11.4.1
Latched Shutdown
7.3.11.4.2
Automatic Retry
7.3.11.5
Fault Condition Summary
7.4
Device Functional Modes
7.4.1
Sleep Mode (nSLEEP = 0)
7.4.2
Disable Mode (nSLEEP = 1, ENABLE = 0)
7.4.3
Operating Mode (nSLEEP = 1, ENABLE = Hi-Z/1)
7.4.4
nSLEEP Reset Pulse
7.4.5
Functional Modes Summary
8
Application and Implementation
8.1
Application Information
8.2
Typical Application
8.2.1
Design Requirements
8.2.2
Detailed Design Procedure
8.2.2.1
Stepper Motor Speed
8.2.2.2
Current Regulation
8.2.2.3
Decay Modes
8.2.3
Application Curves
8.2.4
Thermal Application
8.2.4.1
Power Dissipation
8.2.4.1.1
Conduction Loss
8.2.4.1.2
Switching Loss
8.2.4.1.3
Power Dissipation Due to Quiescent Current
8.2.4.1.4
Total Power Dissipation
8.2.4.2
Device Junction Temperature Estimation
9
Power Supply Recommendations
9.1
Bulk Capacitance
10
Layout
10.1
Layout Guidelines
10.2
Layout Example
11
Device and Documentation Support
11.1
Related Links
11.2
Receiving Notification of Documentation Updates
11.3
Community Resources
11.4
Trademarks
11.5
Electrostatic Discharge Caution
12
Mechanical, Packaging, and Orderable Information
IMPORTANT NOTICE
Package Options
Mechanical Data (Package|Pins)
RGE|24
MPQF124G
PWP|28
MPDS373B
Thermal pad, mechanical data (Package|Pins)
RGE|24
QFND008AA
Orderable Information
slose59c_oa
slose59c_pm
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