Texas Instruments Hall-Hinge-EVM Manuale utente

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

All trademarks are the property of their respective owners.

www.ti.com Table of Contents

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Hall-Hinge-EVM 1

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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Hall-Hinge-EVM 3

Figure 3-4. SENS093_Bracket & SENS093_Slider

Figure 3-5. SENS093_Protractor

Operation www.ti.com

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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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Hall-Hinge-EVM 5

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.

Operation www.ti.com

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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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Hall-Hinge-EVM 7

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.

Operation www.ti.com

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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

VCC

1OUT 2

GND 3

TMAG5231B1DQDBZR

J2 J1

6.3V

0.1uF

6.3V

0.1uF

604

2 1

SML-P11UTT86R

2 1

SML-P11UTT86R

Figure 4-1. HALL-HINGE-EVM Schematic

www.ti.com Schematics, PCB Layout, and Bill of Materials

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Hall-Hinge-EVM 9

PCB Layout

Figure 4-2 through Figure 4-4 show the PCB layers of the EVM.

Figure 4-2. Top View

Figure 4-3. Top Copper

Schematics, PCB Layout, and Bill of Materials www.ti.com

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