SLYA079 November   2023 TMAG5170D-Q1

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Diametric Magnet Approach
    1. 2.1 Errors and Redundancy for Diametric Magnet Approach
    2. 2.2 Sensor Offset Results
    3. 2.3 Magnet Tilt Results
    4. 2.4 Magnet Offset Results
    5. 2.5 Magnet Diameter Results
  6. 3Axial Magnet Approach
    1. 3.1 Errors and Redundancy for Axial Magnet Approach
    2. 3.2 Offset Results
  7. 4Summary
  8. 5References

3.1 Errors and Redundancy for Axial Magnet Approach

The conditions for the subsequent data is defined in Table 3-2. Data was collected through the TIMSS tool and post processed in excel. With mechanical assembly, there is the possibility that sensing device is offset from the intended location. The following analysis evaluates the device being offset ±1.5 mm along the x or y axis and ±1 mm along the z-axis.

Table 3-1 Simulation Parameters
Simulation Parameter in TIMSS Die Configuration Test TIMSS Simulation Parameter Value
Magnet Shape Both All Axial Cylinder
Poles Both All 2
Magnet Both All Ferrite, C11
Outer Diameter Both All 9.52 mm
Height Both All 3.18 mm
Magnet Position Both All start at x = 28.2842 mm, y= 28.2842 mm (45°) , z = 0 mm
Magnet Angle Both All x = 0° y= 0°, z = 0°
Arc Length Both All 90° with steps of 1°; however only 30°-60° analyzed in postprocessing.
Sensor Position x Stacked Die X offset -1.5 mm to 1.5 mm, steps of 0.1 mm
Y offset 0 mm
Horizontal Side-by-side X offset -1.96 mm to 1.04 mm for one Hall element and -1.04 to 1.96 for the other Hall element, steps of 0.1 mm
Y offset -0.46 mm, 0.46 mm
Vertical Side-by-side X offset -1.5 mm to 1.5 mm, steps of 0.1 mm
Y offset 0 mm
Sensor Position y Stacked Die X offset 40 mm
Y offset 40 mm +(-1.5 mm to 1.5 mm), steps of 0.1 mm
Horizontal Side-by-side X offset 40 mm
Y offset 40 mm +(-1.5 mm to 1.5 mm), steps of 0.1 mm
Vertical Side-by-side X offset 39.54 mm, 40.46
Y offset 39.54 mm +(-1.5 mm to 1.5 mm), steps of 0.1 mm for one sensor and 40.46 mm +(-1.5 mm to 1.5 mm), steps of 0.1 mm for the other sensor
Sensor Position z Stacked Die All -2.9385 mm to -4.9385 mm for one Hall element and -3.0615 mm to -5.0615 mm for the other Hall element, steps of 1 mm.
Horizontal and Vertical Side-by-side All -3 mm to -5 mm, steps of 1 mm.