SLVSD18C June   2015  – August 2017 DRV8880

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Device Images
      1.      Simplified System Diagram
      2.      Microstepping Current Waveform
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
    1.     Pin Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Indexer Timing Requirements
    7. 6.7 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1  Stepper Motor Driver Current Ratings
        1. 7.3.1.1 Peak Current Rating
        2. 7.3.1.2 RMS Current Rating
        3. 7.3.1.3 Full-Scale Current Rating
      2. 7.3.2  PWM Motor Drivers
      3. 7.3.3  Microstepping Indexer
      4. 7.3.4  Current Regulation
      5. 7.3.5  Decay Modes
        1. 7.3.5.1 Mode 1: Slow Decay for Increasing and Decreasing Current
        2. 7.3.5.2 Mode 2: Slow Decay for Increasing Current, Mixed Decay for Decreasing current
        3. 7.3.5.3 Mode 3: Mixed Decay for Increasing and Decreasing Current
        4. 7.3.5.4 Mode 4: Slow Decay for Increasing Current, Fast Decay for Decreasing current
        5. 7.3.5.5 Mode 5: Fast Decay for Increasing and Decreasing Current
      6. 7.3.6  Smart Tune
      7. 7.3.7  Adaptive Blanking Time
      8. 7.3.8  Charge Pump
      9. 7.3.9  LDO Voltage Regulator
      10. 7.3.10 Logic and Tri-Level Pin Diagrams
      11. 7.3.11 Power Supplies and Input Pins
      12. 7.3.12 Protection Circuits
      13. 7.3.13 VM UVLO (UVLO2)
      14. 7.3.14 Logic Undervoltage (UVLO1)
      15. 7.3.15 VCP Undervoltage Lockout (CPUV)
      16. 7.3.16 Thermal Shutdown (TSD)
      17. 7.3.17 Overcurrent Protection (OCP)
    4. 7.4 Device Functional Modes
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Stepper Motor Speed
        2. 8.2.2.2 Current Regulation
        3. 8.2.2.3 Decay Modes
        4. 8.2.2.4 Sense Resistor
      3. 8.2.3 Application Curves
  9. 9 Power Supply Recommendations
    1. 9.1 Bulk Capacitance Sizing
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Documentation Support
      1. 11.1.1 Related Documentation
    2. 11.2 Receiving Notification of Documentation Updates
    3. 11.3 Community Resources
    4. 11.4 Trademarks
    5. 11.5 Electrostatic Discharge Caution
    6. 11.6 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • RHR|28
  • PWP|28
Thermal pad, mechanical data (Package|Pins)
Orderable Information

7.4 Device Functional Modes

The DRV8880 internal logic, indexer, and charge pump are operating unless the nSLEEP pin is brought logic low. In sleep mode the charge pump is disabled, the H-bridge FETs are disabled Hi-Z, and the V3P3 regulator is disabled. tSLEEP must elapse after a falling edge on the nSLEEP pin before the device is in sleep mode. The DRV8880 is brought out of sleep mode automatically if nSLEEP is brought logic high. tWAKE must elapse before the outputs change state after wake-up.

If the ENABLE pin is brought logic low, the H-bridge outputs are disabled, but the charge pump and internal logic will remian active. A rising edge on STEP will advance the indexer, but the outputs will not change state until ENABLE brought logic high.

When VM falls below the VM undervoltage lockout threshold VUVLO2, the output driver and charge pump are disabled, but the internal logic and V3P3 remain active. In this mode, STEP inputs will advance the indexer, but the outputs will remain disabled. If VM falls below the logic undervoltage threshold VUVLO1, the internal logic is reset and the indexer will lose position.

Table 11. Functional Modes Summary

CONDITION H-BRIDGE CHARGE PUMP INDEXER V3P3
Operating 6.5 V < VM < 45 V
nSLEEP pin = 1
ENABLE pin = 1		 Operating Operating Operating Operating
Disabled 6.5 V < VM < 45 V
nSLEEP pin = 1
ENABLE pin = 0		 Disabled Operating Operating Operating
Sleep mode 5.0 V < VM < 45 V
nSLEEP pin = 0		 Disabled Disabled Disabled Disabled
Fault encountered VM undervoltage (UVLO2) Disabled Disabled Operating Operating
Logic undervoltage (UVLO1) Disabled Disabled Disabled Operating
VCP undervoltage (CPUV) Disabled Operating Operating Operating
Thermal shutdown (TSD) Disabled Operating Operating Operating
Overcurrent (OCP) Disabled Operating Operating Operating