SLYA078 February   2024 TMAG5170D-Q1

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Choosing a Mechanical Implementation
  6. 3Choosing a Magnetic Implementation
  7. 4Magnet Sensor Placement
  8. 5Prototyping and Bench Testing
  9. 6Error Sources
  10. 7Summary
  11. 8References

Summary

In this application note an E-shifter design is presented. The design flow begins with determining the general method of translating end user position selection into an electrical stimulus that shifter system can process. Then proceeds with showing what Hall-effect devices can be suitable and how to size and space the corresponding magnet accordingly. Results from the featured design indicate what kind of performance was attainable along with a possible calibration method for further improving the accuracy of the design. As any fabricated design has some margin of error introduced in assembly, sources of error were presented to alert designers of various challenges. Despite those challenges, this design achieved absolute angle errors and redundancy errors below ±0.2°.