Texas Instruments Hall-Hinge-EVM Manual de usuario
User’s Guide
Hall-Hinge-EVM
ABSTRACT
This user's guide describes the characteristics, operation, and use of the HALL-HINGE Evaluation Module
(EVM). This EVM is designed with accompany 3D printed structures and magnet to evaluate TMAG5231B1 in a
hinge lid closure apparatus used commonly in laptop lid closures and other lid and door detection applications.
The design is compatible with the HALL-ADAPTER-EVM to allow broader testing of TI's magnetic sensing
portfolio. This document includes a schematic, reference printed circuit board (PCB) layout, and a complete bill
of materials (BOM).
Figure 1-1. Hall-Hinge-EVM
Table of Contents
1 Overview..................................................................................................................................................................................2
2 Hardware................................................................................................................................................................................. 3
3 Operation.................................................................................................................................................................................3
4 Schematics, PCB Layout, and Bill of Materials................................................................................................................... 9
Trademarks
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Hall-Hinge-EVM 1
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1 Overview
The HALL-HINGE-EVM is composed of various 3D printed structures which combine to assist with evaluation
of lid closure detection. The sensor and magnet positions are independently adjustable to demonstrate the
flexibility of Hall-effect sensors in this function type.
Table 1-1. Operating Conditions
Product Voltage Range
TMAG5231B1 1.65 V - 5.5 V
Kit Contents
Table 1-2 lists the contents of the EVM kit. Contact the nearest Texas Instruments Product Information Center if
any component is missing.
Table 1-2. Kit Contents
Item Quantity Description
Hall-Hinge-EVM 1 Evaluation module with TMAG5231B1
SENS093_Arm 1 Hinge Arm for magnet mount
SENS093_Track 1 Hinge Track for sensor Mount
SENS093_Bracket 1 Bracket to hold B222 magnet in SENS093
Slider
SENS093_Slider 1 Adjustable slider for magnet mounted to
SENS093_Arm
SENS093_Protractor 1 Optional protractor with 1° increments for
angle measurements
SENS093_Sensor 2 Sliding mount for Hall-Hinge-EVM to position
on SENS093_Track
B222 1 Magnet, 1/8" Cube, N42
Related documentation from Texas Instruments
This user's guide is available from the TI website under literature number SLYU062. Any letter appended to
the literature number corresponds to the document revision that is current at the time of the writing of this
document. Newer revisions are available from www.ti.com or the Texas Instruments' Literature Response Center
at (800) 477-8924 or the Product Information Center at (972) 644-5580. When ordering, identify the document
by both title and literature number. lists documentation related to the EVM. Click the links in Table 1-3 for further
information. The device name links to the product web folder on www.ti.com. The literature number links to the
document PDF.
Table 1-3. Related Documentation
Document Title Document Literature Number
TMAG5231 Datasheet SLYS042
3D Printed Files SLYU062.zip
Hall-Adapter-EVM User's Guide SLYU043
Overview www.ti.com
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2 Hardware
The EVM PCB is a small form-factor test board with an LED indicator for the output state. The test unit is
installed on a printed circuit board (PCB) with access to each device pin. The PCB format is compatible with
Hall-Adapter-EVM, which allows users to test other devices on a large variety of package options. Please visit
www.ti.com/halleffect when considering additional device selections.
Included with the EVM are several 3D printed structures which combine to produce a test platform with a hinged
lid functionality. The position of the magnet and sensor are customizable and can be manually set to assist with
determining appropriate sensor locations.
Features
• Customizable hinge positions for sensor and magnet
• LED output indicator
• Compatible with HALL-ADAPTER-EVM
• Access to device pins
3 Operation
Final assembly of the 3D printed structures will be required to complete EVM setup. This may be done with
either HALL-HINGE-EVM or with HALL-ADAPATER-EVM.
The following steps walk through the procedure to evaluate TMAG5231 with the HALL-HINGE-EVM. If desired,
the 3D assembly may be downloaded, edited and reprinted as needed from SLYU062.zip.
Figure 3-1 through Figure 3-6 show the components included in this kit.
Figure 3-1. Evaluation Module PCB
Figure 3-2. SENS093_Sensor
Figure 3-3. SENS093_Arm & SENS093_Track
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Figure 3-6. B222 - N42 Cube Magnet
1. Locate the HALL-HINGE-EVM PCBs. TMAG5231 may be evaluated on this PCB with or without the use of
the 3D structures. The device may be powered by connecting a voltage source or battery as indicated in
Figure 3-7.
GND
OUT
VCC
Figure 3-7. Wiring Guide
2. To evaluate using the 3D structure, insert the snapped off PCB into the SENS093_Sensor.
Figure 3-8. Install PCB to SENS093_Slider
3. Slide the SENS093_Sensor into the SENS093_Track as shown in Figure 3-9.
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Figure 3-9. Adding SENS093_Sensor
4. Slide the SENS093_Slider into the SENS093 Arm as shown in Figure 3-10.
Figure 3-10. Adding SENS093_Slider
5. Install the B222 into the SENS093_Brakcet with the magnet oriented as desired.
Figure 3-11. Adding Magnet
a. You can freely adjust the horizontal position of the magnet within the SENS093_Bracket by positioning
the magnet manually within the open space. The direction of magnet polarization may also be adjusted
freely.
b. You can adjust the vertical position of the magnet by turning the screw shown in Figure 3-12.
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Figure 3-12. Vertical Adjustment Screw
c. You can fix the SENS093_Slider position by tightening the set screw shown in Figure 3-13.
Figure 3-13. Set Screw
6. Optional: Insert the Protractor on to the Track from bottom as shown in Figure 3-14.
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Figure 3-14. Protractor Installation
a. Indentations occur at 1° intervals. Larger notches indicate 5° intervals.
0°
5°
Figure 3-15. Protractor Degree Intervals
b. The bottom edge of the arm aligns with the protractor to mark for angle measurements as shown in
Figure 3-16.
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Figure 3-16. Protractor Angle Alignment
7. Apply 3.3 V to Vcc (accepts 1.65V - 5.5 V) to power Hall-Hinge-EVM.
8. Adjust the arm position and observe the output LED. The LED will illuminate when device output is activated
by a magnetic field.
4 Schematics, PCB Layout, and Bill of Materials
Note
Board layouts are not to scale. These figures are intended to show how the board is laid out. The
figures are not intended to be used for manufacturing EVM PCBs.
Schematics
Figure 4-1 shows the schematic of the EVM.
VCC
1OUT 2
GND 3
TMAG5231B1DQDBZR
U1
J3
VCC
1OUT 2
GND 3
TMAG5231B1DQDBZR
U2
J4
J2 J1
6.3V
0.1uF
C1
6.3V
0.1uF
C2
604
R1
604
R2
2 1
D1
SML-P11UTT86R
2 1
D2
SML-P11UTT86R
Figure 4-1. HALL-HINGE-EVM Schematic
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Hall-Hinge-EVM 9
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