SLOU571 June   2024

 

  1.   1
  2.   Description
  3.   Get Started
  4.   Features
  5.   Applications
  6.   6
  7. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
  8. 2Hardware
    1. 2.1 EVM Setup and Mode Select
      1. 2.1.1 Jumpers
      2. 2.1.2 DRV8421A: Brushed-DC Setup
      3. 2.1.3 DRV8421A: Stepper Setup
      4. 2.1.4 DRV8421B: Brushed-DC Setup
      5. 2.1.5 DRV8421B: Stepper Setup
      6. 2.1.6 EVM Control
        1. 2.1.6.1 DRV8421A: Brushed-DC Motor Control
        2. 2.1.6.2 DRV8421A: Stepper Motor Control
        3. 2.1.6.3 DRV8421B: Brushed-DC Motor Control
        4. 2.1.6.4 DRV8421B: Stepper Motor Control
      7. 2.1.7 Parallel Mode
        1. 2.1.7.1 DRV8421A: Parallel Mode
        2. 2.1.7.2 DRV8421B: Parallel Mode
      8. 2.1.8 Removing and Installing Supported Motor Drivers
  9. 3Hardware Design Files
    1. 3.1 Schematics
    2. 3.2 PCB (Top-Assembly View)
    3. 3.3 Bill of Materials (BOM)
  10. 4Additional Information
    1. 4.1 Trademarks

2.1.1 Jumpers

  • Please refer to the following figure and table for the location and description of components and jumpers on the board. These jumpers are used to configure the pins on the MSP430 to support various load configurations and board variants.
DRV8421AEVM, DRV8421BEVM Jumper Population Guide Figure 2-1 Jumper Population Guide
Table 2-1 Jumper Identification
JUMPERS DRV8421A DRV8421B DESCRIPTION
J1 Not populated Sleep/enable jumper Select low-power sleep mode or enable
J2 Mode select jumper Mode select jumper Select Brushed-DC or Stepper Motor
J3 EZ-FET EZ-FET Used for programming the MCU
J4 Main power supply terminal Main power supply terminal Supplies power to the EVM (only one power supply needed)
J5-J6 Main output terminals

Main output terminals

 Output terminals for load connections
J7 MCU to DRV8421 MCU to DRV8421 Must be populated if using onboard MCU
J8 DC power jack DC power jack Alternate power supply connection (only one power supply needed)
J9 Output pins Output pins Alternate output pins for connection convenience
J10 Step select jumper Not populated Select Full-Step or Half-Step when in Stepper Mode
J11 Parallel mode jumper Parallel mode jumper Remove shunt 3 from J7 to use to populate J11 (See Section 2.1.7 for more details)

For more detailed information, download the hardware files and schematics. Once users have verified that all shunts and jumpers are in the correct location, users can move on to the EVM setup.