SLLSEK2A June   2014  – March 2017 DRV8846

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Device Images
      1.      Simplified Schematic
  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 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 PWM Motor Drivers
      2. 7.3.2 Micro-Stepping Indexer
      3. 7.3.3 Current Regulation
      4. 7.3.4 Decay Mode
      5. 7.3.5 Blanking Time
      6. 7.3.6 Protection Circuits
        1. 7.3.6.1 Overcurrent Protection (OCP)
        2. 7.3.6.2 Thermal Shutdown (TSD)
        3. 7.3.6.3 Undervoltage Lockout (UVLO)
    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
      3. 8.2.3 Application Curves
  9. 9 Power Supply Recommendations
  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

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

7.3.5 Blanking Time

After the current is enabled in an H-bridge, the voltage on the xISEN pin is ignored for a period of time before enabling the current sense circuitry. Note that the blanking time also sets the minimum drive time of the PWM.

The time, tBLANK, is determined by the sine DAC code and the torque DAC setting. The timing information for tBLANK is given in Table 8.

Table 8. tBLANK Settings

Sine DAC Code Torque DAC I[1:0] Setting
00 - 100% 0Z - 87.5% 01 - 75% Z0 - 62.5% ZZ - 50% Z1 - 37.5% 10 - 25% 1Z - 12.5%
31 1.80 µs 1.80 µs 1.50 µs 1.50 µs 1.50 µs 1.20 µs 1.20 µs 0.90 µs
30 1.80 µs 1.80 µs 1.50 µs 1.50 µs 1.50 µs 1.20 µs 1.20 µs 0.90 µs
29 1.80 µs 1.80 µs 1.50 µs 1.50 µs 1.50 µs 1.20 µs 1.20 µs 0.90 µs
28 1.80 µs 1.80 µs 1.50 µs 1.50 µs 1.50 µs 1.20 µs 1.20 µs 0.90 µs
27 1.80 µs 1.80 µs 1.50 µs 1.50 µs 1.50 µs 1.20 µs 1.20 µs 0.90 µs
26 1.80 µs 1.80 µs 1.50 µs 1.50 µs 1.50 µs 1.20 µs 1.20 µs 0.90 µs
25 1.80 µs 1.80 µs 1.50 µs 1.50 µs 1.50 µs 1.20 µs 1.20 µs 0.90 µs
24 1.80 µs 1.80 µs 1.50 µs 1.50 µs 1.50 µs 1.20 µs 1.20 µs 0.90 µs
23 1.80 µs 1.80 µs 1.50 µs 1.50 µs 1.50 µs 1.20 µs 1.20 µs 0.90 µs
22 1.80 µs 1.80 µs 1.50 µs 1.50 µs 1.50 µs 1.20 µs 1.20 µs 0.90 µs
21 1.80 µs 1.80 µs 1.50 µs 1.50 µs 1.50 µs 1.20 µs 1.20 µs 0.90 µs
20 1.80 µs 1.80 µs 1.50 µs 1.50 µs 1.50 µs 1.20 µs 1.20 µs 0.90 µs
19 1.80 µs 1.80 µs 1.50 µs 1.50 µs 1.50 µs 1.20 µs 1.20 µs 0.90 µs
18 1.80 µs 1.80 µs 1.50 µs 1.50 µs 1.50 µs 1.20 µs 1.20 µs 0.90 µs
17 1.80 µs 1.80 µs 1.50 µs 1.50 µs 1.50 µs 1.20 µs 1.20 µs 0.90 µs
16 1.80 µs 1.80 µs 1.50 µs 1.50 µs 1.50 µs 1.20 µs 1.20 µs 0.90 µs
15 1.50 µs 1.50 µs 1.50 µs 1.20 µs 1.20 µs 1.20 µs 0.90 µs 0.90 µs
14 1.50 µs 1.50 µs 1.50 µs 1.20 µs 1.20 µs 1.20 µs 0.90 µs 0.90 µs
13 1.50 µs 1.50 µs 1.50 µs 1.20 µs 1.20 µs 1.20 µs 0.90 µs 0.90 µs
12 1.50 µs 1.50 µs 1.50 µs 1.20 µs 1.20 µs 1.20 µs 0.90 µs 0.90 µs
11 1.50 µs 1.50 µs 1.50 µs 1.20 µs 1.20 µs 1.20 µs 0.90 µs 0.90 µs
10 1.50 µs 1.50 µs 1.50 µs 1.20 µs 1.20 µs 1.20 µs 0.90 µs 0.90 µs
9 1.50 µs 1.50 µs 1.50 µs 1.20 µs 1.20 µs 1.20 µs 0.90 µs 0.90 µs
8 1.50 µs 1.50 µs 1.50 µs 1.20 µs 1.20 µs 1.20 µs 0.90 µs 0.90 µs
7 1.20 µs 1.20 µs 1.20 µs 0.90 µs 0.90 µs 0.90 µs 0.90 µs 0.90 µs
6 1.20 µs 1.20 µs 1.20 µs 0.90 µs 0.90 µs 0.90 µs 0.90 µs 0.90 µs
5 1.20 µs 1.20 µs 1.20 µs 0.90 µs 0.90 µs 0.90 µs 0.90 µs 0.90 µs
4 1.20 µs 1.20 µs 1.20 µs 0.90 µs 0.90 µs 0.90 µs 0.90 µs 0.90 µs
3 0.90 µs 0.90 µs 0.90 µs 0.90 µs 0.90 µs 0.90 µs 0.90 µs 0.90 µs
2 0.90 µs 0.90 µs 0.90 µs 0.90 µs 0.90 µs 0.90 µs 0.90 µs 0.90 µs
1 0.90 µs 0.90 µs 0.90 µs 0.90 µs 0.90 µs 0.90 µs 0.90 µs 0.90 µs
0 0.90 µs 0.90 µs 0.90 µs 0.90 µs 0.90 µs 0.90 µs 0.90 µs 0.90 µs