SLLA621A September   2023  – October 2023 MCF8315A , MCF8316A

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Design Challenge 1: Thermal Challenges
    1. 2.1 Causes of Thermal Issues
    2. 2.2 How to Solve Thermal Issues
      1. 2.2.1 Solve the Thermal Problem From Hardware
      2. 2.2.2 Solve the Thermal Problem from Algorithm
        1. 2.2.2.1 MCF8315 Test 1
        2. 2.2.2.2 MCF8315 Test 2
        3. 2.2.2.3 MCF8316 Test 1
        4. 2.2.2.4 MCF8316 Test 2
      3. 2.2.3 Solve the Thermal Challenges From PCB Layout
  6. 3Design Challenge 2: Quick Startup
    1. 3.1 Causes of Quick Startup Issues
    2. 3.2 How to Solve Quick Startup Issues
  7. 4Summary
    1. 4.1 Acknowledgment
  8. 5References
  9. 6Revision History

3.1 Causes of Quick Startup Issues

For sensorless FOC, since MCF831x has no sensors to provide position information, the startup is divided into the following steps: motor start-up , open loop, and hand off, close loop. Dividing the startup is because there is a complicated start-up process, but to make sure that each start-up link is executed correctly, so the start-up speed is not as fast as that of a brushed motor. However, we can take the time to optimize each step at the algorithm level and minimize the start-up time to be as short as possible.

GUID-20230828-SS0I-NXNL-S8GR-LVQ3GNB8MR6T-low.png Figure 3-1 MCF831X Startup Process