Texas Instruments TMAG5328 User Manual
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Texas Instruments TMAG5328 User Manual

Texas Instruments TMAG5328 User Manual

Evaluation module
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User's Guide
TMAG5328 Evaluation Module
This user's guide describes the characteristics, operation, and use of the TMAG5328 evaluation module (EVM).
This EVM is designed to evaluate the performance of the TMAG5328. Throughout this document, the terms
evaluation board, evaluation module, and EVM are synonymous with the TMAG5328EVM. This document
includes a schematic, reference printed circuit board (PCB) layouts, and a complete bill of materials (BOM).
1
Overview..................................................................................................................................................................................2
1.1 Features.............................................................................................................................................................................
Contents.............................................................................................................................................................................4
3 Related Documentation From Texas Instruments...............................................................................................................
4 Hardware.................................................................................................................................................................................
4.1 EVM Threshold Adjustment Options..................................................................................................................................
5 EVM Operation......................................................................................................................................................................
5.1 Evaluation With SCB and GUI.........................................................................................................................................
5.2 Evaluation Without SCB and GUI (EVM Stand-Alone Mode)..........................................................................................
5.3 Head-On Linear Displacement Demo..............................................................................................................................
6 Schematics, PCB Layout, and Bill of Materials.................................................................................................................
6.1
Schematics.......................................................................................................................................................................24
6.2 PCB Layout......................................................................................................................................................................
Materials.................................................................................................................................................................29
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SBAU376 - DECEMBER 2021
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ABSTRACT

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Copyright © 2021 Texas Instruments Incorporated
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  • Page 1: Table Of Contents

    This user’s guide describes the characteristics, operation, and use of the TMAG5328 evaluation module (EVM). This EVM is designed to evaluate the performance of the TMAG5328. Throughout this document, the terms evaluation board, evaluation module, and EVM are synonymous with the TMAG5328EVM. This document includes a schematic, reference printed circuit board (PCB) layouts, and a complete bill of materials (BOM).

  • Page 2: Overview

    (EMC) testing. The EVM consists of two PCBs. The smaller PCB is referred to as the EVM, and has the TMAG5328 device installed. The larger PCB is referred to as the Sensor Control Board (SCB), and is used to interface the EVM with the GUI.

  • Page 3: Features

    Flexible TMAG5328 power supply options – 3.3-V rail from Sensor Controller Board: Enables evaluation without external power supply – External power supply: TMAG5328 powered independently from Sensor Controller Board, which enables testing the TMAG5328 at other voltages than 3.3 V •...

  • Page 4: Kit Contents

    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.

  • Page 5: Hardware

    TMAG5328 is to use the onboard DAC43701 DAC to output a voltage on the TMAG5328 ADJ pin. The DAC43701 is an 8-bit voltage-output DAC with nonvolatile memory and I interface. The nonvolatile memory retains the set values in the absence of a power supply. As a result, if the DAC output settings are stored in the nonvolatile memory of the DAC, a microcontroller does not need to reconfigure the DAC after each reset.
  • Page 6 8.5 mT. The TMAG5328 ADJ pin can accept a voltage from 0.16 V to 1.2 V. To stay within this voltage range, the GUI ensures that the DAC output voltage cannot be set outside of the 0.16-V to 1.2-V range.
  • Page 7 4.1.2 Adjusting Threshold With Potentiometer The B of the TMAG5328 can also be set with the analog potentiometer that is on the EVM. To select the potentiometer option for setting B , the potentiometer must be connected to the ADJ pin, which is done by the following steps: •...
  • Page 8 ADJ resistance of 4.3kΩ and 14.3 kΩ, respectively. Figure 4-4. Potentiometer Position for Creating 4.3-kΩ ADJ Resistance TMAG5328 Evaluation Module SBAU376 – DECEMBER 2021 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated...

  • Page 9: Power Supply Options And Jumper Settings

    VCC on the board, or it can be powered from an external power supply that is independent of the board's main power rail. To power the TMAG5328 from the VCC rail, add a jumper on pins 1 and 2 of header J2. By adding the jumper to J2, the TMAG5328 is powered from the same power supply as the DAC43701.
  • Page 10 DAC43701 and TMAG5328. To power the TMAG5328 from an external power supply that is independent of the board's main power rail, remove the jumper on J2 and connect J4 Pin 1 (labeled TVCC on the board) to the positive terminal of a power supply and then connect the board's ground to the negative terminal of the power supply.
  • Page 11 GND (pin 3). If a jumper is pressed on J2, TVCC is connected to VCC on the board. To power the TMAG5328 from an external power supply that is independent of VCC, remove the jumper header on J2 and connect the external bench power supply between TVCC and GND.

  • Page 12: Evm Operation

    LED) is still ON. If LED D1 is still ON, the GUI firmware is still active and the device has not entered DFU mode. TMAG5328 Evaluation Module SBAU376 – DECEMBER 2021 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated...
  • Page 13 The below screen should pop up while the firmware is updating: Figure 5-4. Firmware Update Screen iii. After the firmware updates successfully, the GUI will reload itself. SBAU376 – DECEMBER 2021 TMAG5328 Evaluation Module Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated...
  • Page 14 Figure 5-7. Change Serial Port b. If the hardware still does not connect, make sure you are using the correct GUI and EVM combination. TMAG5328 Evaluation Module SBAU376 – DECEMBER 2021 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated...
  • Page 15 Figure 5-9 shows an example plot of the OUT waveform. If the TMAG5328 OUT pin is at a high state (LED is OFF), a "1" is displayed on the graph. If the pin is at a low state (LED is ON), a "0" is displayed on the graph.
  • Page 16 – Manual V Drop-Down Box Option: This allows the user to enter a DAC output voltage into the "Voltage Applied to TMAG5328 ADJ Pin" textbox. When you click the CHANGE VALUE button, the DAC's output voltage is set to the output voltage that was entered into the "Voltage Applied to TMAG5328 ADJ Pin" textbox.
  • Page 17 Results Read command format: rreg 0 – This command reads the state of the TMAG5328 OUT pin. If the pin is asserted high (the LED is OFF), the value returned is 1. If the pin is asserted low (the LED is ON), the value returned is 0.
  • Page 18 Figure 5-14. Example Set DAC Output Voltage Command Response • Set Equivalent Resistance command format: wreg 3 VAL TMAG5328 Evaluation Module SBAU376 – DECEMBER 2021 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated...
  • Page 19 – This command prints the EVM the SCB is configured for (TMAG5328EVM in this case) and the date associated with the version of the firmware loaded on the SCB. SBAU376 – DECEMBER 2021 TMAG5328 Evaluation Module Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated...

  • Page 20: Evaluation Without Scb And Gui (Evm Stand-Alone Mode)

    When in stand-alone mode, the TMAG5328 OUT pin can be probed at the test point that is labeled "OUT" on the board or on pin 9 of header J1. In addition, LED D1 can be used to visually observe the state of the TMAG5328 TMAG5328 Evaluation Module SBAU376 –...

  • Page 21: Head-On Linear Displacement Demo

    When connected to the TMAG5328EVM, the module creates a magnetic field that is sensed by the TMAG5328. The module has two portions: a screw and a base. The base is connected to the EVM and the screw is placed inside the base. A magnet is embedded within the screw, which produces the magnetic field sensed by the TMAG5328.
  • Page 22 EVM Operation www.ti.com When the screw is rotated clockwise inside the base, the magnet gets closer to the TMAG5328, thereby increasing the sensed magnetic flux density. If the screw is turned counterclockwise within the base, the screw increases its distance with respect to the TMAG5328, which decreases the sensed magnetic flux density.

  • Page 23: Schematics, Pcb Layout, And Bill Of Materials

    Figure 5-24), the sensed magnetic flux density will be larger than the 15-mT B maximum that is supported by the TMAG5328, so the TMAG5328 OUT pin will be asserted low and LED D1 will be ON. Figure 5-24. Screw Fully Fastened Into Base...

  • Page 24: Schematics

    Schematics, PCB Layout, and Bill of Materials www.ti.com 6.1 Schematics Figure 6-1 shows the EVM schematic. Figure 6-1. TMAG5328EVM Schematic TMAG5328 Evaluation Module SBAU376 – DECEMBER 2021 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated...

  • Page 25: Pcb Layout

    Schematics, PCB Layout, and Bill of Materials 6.2 PCB Layout Figure 6-2 through Figure 6-5 show the PCB layers of the EVM. Figure 6-2. Top View SBAU376 – DECEMBER 2021 TMAG5328 Evaluation Module Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated...
  • Page 26 Schematics, PCB Layout, and Bill of Materials www.ti.com Figure 6-3. Top Layer TMAG5328 Evaluation Module SBAU376 – DECEMBER 2021 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated...
  • Page 27 Schematics, PCB Layout, and Bill of Materials Figure 6-4. Bottom View SBAU376 – DECEMBER 2021 TMAG5328 Evaluation Module Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated...
  • Page 28 Schematics, PCB Layout, and Bill of Materials www.ti.com Figure 6-5. Bottom Layer TMAG5328 Evaluation Module SBAU376 – DECEMBER 2021 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated...

  • Page 29: Bill Of Materials

    RES, 0, 5%, 0.063 W, 0402 0402 RC0402JR-070RL Yageo America 4.3k RES, 4.3 k, 5%, 0.063 W, AEC- 0402 CRCW04024K30JNED Vishay-Dale Q200 Grade 0, 0402 SBAU376 – DECEMBER 2021 TMAG5328 Evaluation Module Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated...
  • Page 30 RES, 10.0 k, 1%, 0.063 W, AEC- 0402 RMCF0402FT10K0 Stackpole Electronics Q200 Grade 0, 0402 RES, 91 k, 5%, 0.063 W, AEC- 0402 CRCW040291K0JNED Vishay-Dale Q200 Grade 0, 0402 TMAG5328 Evaluation Module SBAU376 – DECEMBER 2021 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated...
  • Page 31 STANDARD TERMS FOR EVALUATION MODULES Delivery: TI delivers TI evaluation boards, kits, or modules, including any accompanying demonstration software, components, and/or documentation which may be provided together or separately (collectively, an “EVM” or “EVMs”) to the User (“User”) in accordance with the terms set forth herein.
  • Page 32 www.ti.com Regulatory Notices: 3.1 United States 3.1.1 Notice applicable to EVMs not FCC-Approved: FCC NOTICE: This kit is designed to allow product developers to evaluate electronic components, circuitry, or software associated with the kit to determine whether to incorporate such items in a finished product and software developers to write software applications for use with the end product.
  • Page 33 www.ti.com Concernant les EVMs avec antennes détachables Conformément à la réglementation d'Industrie Canada, le présent émetteur radio peut fonctionner avec une antenne d'un type et d'un gain maximal (ou inférieur) approuvé pour l'émetteur par Industrie Canada. Dans le but de réduire les risques de brouillage radioélectrique à...
  • Page 34 www.ti.com EVM Use Restrictions and Warnings: 4.1 EVMS ARE NOT FOR USE IN FUNCTIONAL SAFETY AND/OR SAFETY CRITICAL EVALUATIONS, INCLUDING BUT NOT LIMITED TO EVALUATIONS OF LIFE SUPPORT APPLICATIONS. 4.2 User must read and apply the user guide and other available documentation provided by TI regarding the EVM prior to handling or using the EVM, including without limitation any warning or restriction notices.
  • Page 35 Notwithstanding the foregoing, any judgment may be enforced in any United States or foreign court, and TI may seek injunctive relief in any United States or foreign court. Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright © 2019, Texas Instruments Incorporated...
  • Page 36 TI products. TI’s provision of these resources does not expand or otherwise alter TI’s applicable warranties or warranty disclaimers for TI products. TI objects to and rejects any additional or different terms you may have proposed. IMPORTANT NOTICE Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright © 2021, Texas Instruments Incorporated...

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