SLVUDM2 October   2025

 

  1.   1
  2.   Description
  3.   Features
  4.   Applications
  5.   5
  6. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
  7. 2Hardware
    1. 2.1 Quick Setup – Motor Run Mode
    2. 2.2 Quick Setup – OTP Programming Mode
    3. 2.3 Hardware Overview
      1. 2.3.1 Motor PCB connection to MC121EVM
      2. 2.3.2 External Analog Speed Input
      3. 2.3.3 Onboard 12V Boost Circuit
    4. 2.4 MSP430FR2355 Microcontroller
  8. 3Software
    1. 3.1 EVM Firmware
    2. 3.2 GUI Installation
    3. 3.3 Getting Started With Motorstudio for MC121
  9. 4Hardware Design Files
    1. 4.1 Schematics
    2. 4.2 PCB Layouts
    3. 4.3 Bill of Materials (BOM)
  10. 5Additional Information
    1.     Trademarks

2.3.1 Motor PCB connection to MC121EVM

Figure 2-4 shows the connections to be made to the single phase BLDC motor. the MC121 or MC121-Q1 is residing on the PCB on the motor and does not reside on the EVM. Users are expected to design a PCB for the motor with the MC121 or MC121-Q1 and use the MC121EVM to evaluate the motor performance with the EVM

MC121EVM EVM and Motor PCB connection Figure 2-4 EVM and Motor PCB connection

All the necessary pull ups and protections are present on the EVM. An example recommended schematic for the MC121 motor PCB is shown below:

MC121EVM Recommended Motor PCB schematics Figure 2-5 Recommended Motor PCB schematics