Freescale Semiconductor DRM079 Manuales de usuario

Tabla de contenidos

• Chapter 1 Introduction

  7
  • 1.1 Introduction

    7
  • 1.2 Freescale’s New Generation Ultra Low Cost MCU

    8
  • 1.3 DC Fan Reference Design Targets

    8
  • 1.4 Bi-Phase BLDC Motor

    9
• Chapter 2 Motor Control

  11
  • 2.1 Commutation

    11
  • 2.2 Rotor Position Control

    11
  • 2.3 Commutation Waveforms

    12
  • 2.4 Speed Control

    12
  • 2.5 Motor Startup

    13
  • 2.6 Fault Detection

    13
• Chapter 3 Implementation

  15
  • 3.1 Block Diagram

    15
  • 3.2 Hardware Resources

    15
  • 3.3 Control Loop

    16
  • 3.4 Temperature Sensor Measurement

    18
    • 3.4.1 Temperature Conversion

      20
• Appendix A. Schematic

  23
• Appendix B. Program Listing

  25