User Manuals: Atmel AVR675 Configurable Fan

Manuals and User Guides for Atmel AVR675 Configurable Fan. We have 1 Atmel AVR675 Configurable Fan manual available for free PDF download: Application Note

Atmel AVR675 Application Note

Atmel AVR675 Application Note (34 pages)

Configurable Three Phase BLDC Fan using 8-bit AVR Microcontrollers

Brand: Atmel | Category: Fan | Size: 1 MB

Table of Contents

Table of Contents
2
1 Theory of Operation

3
- Overview
  3
- Hardware
  3
- Firmware
  3
- Motor Control Configuration Utility
  3
2 System Details

4
- Hardware
  4
- Firmware
  6
  - Control Structure
    6
  - ISR Routines
    7
  - Communication
    10
- Motor Control Configuration Utility
  11
  - Layout of Utility
    11
  - Variables
    11
  - Variable Plot
    12
  - Parameters
    12
  - File Functions
    12
3 Running the System

13
- Hardware
  13
- Firmware
  13
- Motor Control Configuration Utility
  15
  - Running the Motor Control Configuration Utility
    15
  - Motor Variables and Variable Plot
    16
  - Motor Parameters
    18
  - Enable Voltage
    21
  - Oscillator Calibration
    21
  - Mode and Input_Cmd
    22
  - Tuning the Back EMF Sensing PLL
    23
  - Fine Tuning Startup
    24
  - Recovery from Stall
    26
  - 3.3.10 Speed Control Tuning
    26
  - 3.3.11 Mapping Speed Command
    27
  - 3.3.12 Stand Alone Fan Operation
    28
4 Conclusion

29
Appendix A. Schematics

30
Appendix B. Kit Parts List

32
Appendix C. Revision History

33

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