TIDUF84 June   2024

 

  1.   1
  2.   Description
  3.   Resources
  4.   Features
  5.   Applications
  6.   6
  7. 1System Description
    1. 1.1 Key System Specifications
  8. 2System Overview
    1. 2.1 Block Diagram
    2. 2.2 Design Considerations
    3. 2.3 Highlighted Products
      1. 2.3.1 UCC28810
      2. 2.3.2 MCF8315
      3. 2.3.3 MSPM0L
      4. 2.3.4 MSPM0C
  9. 3System Design Theory
    1. 3.1 MCF8315 Design
      1. 3.1.1 Power section
      2. 3.1.2 GPIO section
    2. 3.2 ACDC Design: Single Stage PFC
    3. 3.3 Host MCU Design
  10. 4Hardware, Software, Testing Requirements, and Test Results
    1. 4.1 Hardware Requirements
      1. 4.1.1 Hardware Overview
      2. 4.1.2 TIDA-010951 PCB
    2. 4.2 Software Requirements
    3. 4.3 Testing requirements
    4. 4.4 Test Setup
    5. 4.5 Test Results
      1. 4.5.1 Power Management in TIDA-010951
      2. 4.5.2 UCC28810 Based Single Stage PFC
      3. 4.5.3 BLDC Residential Fan Operation Using MCF8315C
        1. 4.5.3.1 Power-Up Sequence
        2. 4.5.3.2 Forward Windmilling (ISD Forward Resync)
        3. 4.5.3.3 Reverse Windmilling (ISD Reverse Resync)
        4. 4.5.3.4 Direction Reversal
        5. 4.5.3.5 Fan Acceleration/Deceleration
      4. 4.5.4 Thermal Performance
  11. 5Design and Documentation Support
    1. 5.1 Design Files
      1. 5.1.1 Schematics
      2. 5.1.2 BOM
    2. 5.2 Tools and Software
    3. 5.3 Documentation Support
    4. 5.4 Support Resources
    5. 5.5 Trademarks
  12. 6About the Author
  13. 7Recognition

4.1.2 TIDA-010951 PCB

The TIDA-010951 requires only one power input: a 1-phase, 85-265VAC RMS source capable of delivering up to 50W. The input terminals for the AC power supply are on the top side of the PCB (highlighted in a box) in the top right quadrant of Figure 4-1. The diode rectifier, fly-back transformer and the 24V rail bus capacitors are also on the top side of the PCB. The BLDC motor driver MCF8315C is powered off the 24V rail and drives the BLDC motor based on the speed command received over I2C from an MCU (MSPM0L1306) shown in Figure 4-1. The IR receiver to receive the speed command is also on the top side of the PCB. In addition, the two connectors for communication with the MSPM0L1306 (SWD and UART) are also placed on the top side of the PCB as marked in Figure 4-1.

TIDA-010951 TIDA-010951 PCB Top View Figure 4-1 TIDA-010951 PCB Top View

The PCB bottom side shows the fly-back converter components including the controller, UCC28810, primary MOSFET and secondary diode. In addition, the three phase outputs for the BLDC motor are also available on the bottom side of the PCB as marked in Figure 4-2.

TIDA-010951 TIDA-010951 PCB Bottom View Figure 4-2 TIDA-010951 PCB Bottom View