SLYA065 October   2022 TMAG5328

 

  1.   Abstract
  2.   Trademarks
  3. 1Introduction
    1. 1.1 Mapping Switching Distance to Magnetic Flux Density
    2. 1.2 How to Program BOP of TMAG5328
    3. 1.3 Advantages of TMAG5328 Adjustable BOP
  4. 2Determining Sensed Magnetic Flux Density Seen by TMAG5328
  5. 3Implementing a Software-Programmable Hall-Effect Switch With Microcontroller-Less Standalone Mode
  6. 4Implementing Diagnostics and a Magnetic Window Comparator
    1. 4.1 Conducting Diagnostic Tests With TMAG5328EVM and Head-On Linear Displacement 3D Print
      1. 4.1.1 Magnet Out-of-Range Testing (Magnetic Window Comparator Testing)
        1. 4.1.1.1 Signal Disconnections
        2. 4.1.1.2 Signal Shorts
  7. 5Summary

5 Summary

By connecting the TMAG5328 to a DAC with nonvolatile memory, a software programmable Hall-effect switch with microcontroller-less standalone mode can be implemented. Using a DAC also enables backcalculating the magnetic flux density seen by the device. In addition, the DAC can be configured to implement diagnostics on the TMAG5328 to detect TMAG5328 pin shorts, TMAG5328 pin disconnections, and magnet out of range faults. These applications as well as the other applications of the TMAG5328 adjustable BOP increases system design flexibility and reduces design time.