Texas Instruments EZShunt INA740 User Manual
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Texas Instruments EZShunt INA740 User Manual

Texas Instruments EZShunt INA740 User Manual

Digital current and power monitors
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EVM User's Guide: INA780, INA740, INA745, INA780A, INA780B,
INA781, INA740A, INA740B, INA741, INA745A, INA745B, INA746,
INA780-781EVM, INA740-INA741EVM, INA745-746EVM
™
EZShunt
Digital Current and Power Monitors
Description
The EZShunt
™
Digital Power Monitor evaluation
modules demonstrate the performance and features
of the INA780, INA781, INA740, INA741, INA745, and
INA746. Paired with the Sensor Control Board (SCB),
the graphical user interface (GUI composer) provides
the device power and digital setup and evaluation with
real-time data capture. The EVM has I2C inputs.
SBOU302A – JUNE 2023 – REVISED DECEMBER 2023
Submit Document Feedback
Features
•
GUI support to read and write device registers as
well as view and save results data
•
EVM detached from SCB for custom use cases
•
Multiple EVM support with single SCB/GUI
•
Conveniently powered from a common micro-USB
connector through the SCB
•
Includes high power lugs and hardware for quick
high current evaluation (only available for Version
A with fully released devices)
Copyright © 2023 Texas Instruments Incorporated
EZShunt
™
Digital Current and Power Monitors
Description
1

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  • Page 1 Includes high power lugs and hardware for quick high current evaluation (only available for Version A with fully released devices) SBOU302A – JUNE 2023 – REVISED DECEMBER 2023 EZShunt ™ Digital Current and Power Monitors Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...

  • Page 2: Kit Contents

    Lugs MP1 and MP2 are included with associated hardware MP3, MP4, MP5, and MP6 Until all devices have been fully released, this document covers both versions. EZShunt ™ Digital Current and Power Monitors SBOU302A – JUNE 2023 – REVISED DECEMBER 2023 Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...

  • Page 3: Specification

    40 V 16-bit INA745B 16-bit INA746 20-bit INA780A 560 mΩ 85 V 16-bit INA780B 16-bit INA781 20-bit SBOU302A – JUNE 2023 – REVISED DECEMBER 2023 EZShunt ™ Digital Current and Power Monitors Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...

  • Page 4: Quick Start Setup

    7. Verify the load current source is disabled, then connect the EVM MP1 (IS+) and MP2 (IS-) nodes in-series to the load line with properly current rated cables as explained inCurrent Sensing Operation. EZShunt ™ Digital Current and Power Monitors SBOU302A – JUNE 2023 – REVISED DECEMBER 2023 Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...

  • Page 5: Evm Operation

    MP1 and MP2 are designed for terminal connector lugs compatible with a 1/4 inch stud, such as the LAMA6-14-QY. Note that the VBUS pin is electrically tied to the IS+ net SBOU302A – JUNE 2023 – REVISED DECEMBER 2023 EZShunt ™ Digital Current and Power Monitors Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...

  • Page 6: Digital Circuitry

    EVM with any current carrying wire provided the current and voltage are within EVM limits. 2.3.3 Digital Circuitry This section describes the digital circuitry around the device. EZShunt ™ Digital Current and Power Monitors SBOU302A – JUNE 2023 – REVISED DECEMBER 2023 Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...
  • Page 7 R8 is used as a pullup resistor for the ALERT pin, which is routed to both J2 and J3. LED D2 and current limiting resistor R7 are used to indicate when the ALERT has triggered. General Texas Instruments High Voltage Evaluation (TI HV EVM) User Safety Guidelines WARNING Always follow TI's set-up and application instructions, including use of all interface components within their recommended electrical rated voltage and power limits.
  • Page 8 Limitation for safe use: EVMs are not to be used as all or part of a production unit. EZShunt ™ Digital Current and Power Monitors SBOU302A – JUNE 2023 – REVISED DECEMBER 2023 Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...
  • Page 9 Figure 3-1. Test Points Used to Enter DFU Mode Manually With the MCU in DFU mode, upload the firmware through the method outlined in Step SBOU302A – JUNE 2023 – REVISED DECEMBER 2023 EZShunt ™ Digital Current and Power Monitors Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...
  • Page 10 GUI Composer application (see Figure 3-2) and follow the prompts to download the GUI for offline use. EZShunt ™ Digital Current and Power Monitors SBOU302A – JUNE 2023 – REVISED DECEMBER 2023 Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...
  • Page 11 Avoid using long cables and USB hubs. • If using a desktop PC, then try a USB port on the back. SBOU302A – JUNE 2023 – REVISED DECEMBER 2023 EZShunt ™ Digital Current and Power Monitors Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...

  • Page 12: Gui Operation

    Deferred Write to only allow writing when ready. – Modify writable register values from any of these methods: EZShunt ™ Digital Current and Power Monitors SBOU302A – JUNE 2023 – REVISED DECEMBER 2023 Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...
  • Page 13 – The GUI only supports one EVM/device type at a time, up to 4 EVMs total. SBOU302A – JUNE 2023 – REVISED DECEMBER 2023 EZShunt ™ Digital Current and Power Monitors Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...
  • Page 14 • – The maximum Y-axis value to use for all EVMs in this plot. EZShunt ™ Digital Current and Power Monitors SBOU302A – JUNE 2023 – REVISED DECEMBER 2023 Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...
  • Page 15 – For this example, the EVM returns the results and state ("idle" or "collecting") in JSON format: {"acknowledge":"wreg 0x01 0xfb69"} {"console":"Writing 0xfb69 to ADC_CONFIG register"} {"evm_state":"idle"} SBOU302A – JUNE 2023 – REVISED DECEMBER 2023 EZShunt ™ Digital Current and Power Monitors Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...
  • Page 16 – Where stop is always lower case. – The EVM returns the acknowledgment and state in JSON format: {"acknowledge":"stop"} {"evm_state":"idle"} EZShunt ™ Digital Current and Power Monitors SBOU302A – JUNE 2023 – REVISED DECEMBER 2023 Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...
  • Page 17 Figure 4-4 show the schematic and the mechanical components of the EVM. Figure 4-1. SENSE108A Schematic SBOU302A – JUNE 2023 – REVISED DECEMBER 2023 EZShunt ™ Digital Current and Power Monitors Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...
  • Page 18 Hardware Design Files www.ti.com Figure 4-2. SENS108E1 Schematic EZShunt ™ Digital Current and Power Monitors SBOU302A – JUNE 2023 – REVISED DECEMBER 2023 Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...
  • Page 19 Hardware Design Files Figure 4-3. SENS108A Hardware SBOU302A – JUNE 2023 – REVISED DECEMBER 2023 EZShunt ™ Digital Current and Power Monitors Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...
  • Page 20 Hardware Design Files www.ti.com Figure 4-4. SENS108E1 Hardware EZShunt ™ Digital Current and Power Monitors SBOU302A – JUNE 2023 – REVISED DECEMBER 2023 Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...
  • Page 21 EVM. Figure 4-5. SENS109A Schematic Figure 4-6. SENS109E1 Schematic SBOU302A – JUNE 2023 – REVISED DECEMBER 2023 EZShunt ™ Digital Current and Power Monitors Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...
  • Page 22 Hardware Design Files www.ti.com Figure 4-7. SENS109A Hardware EZShunt ™ Digital Current and Power Monitors SBOU302A – JUNE 2023 – REVISED DECEMBER 2023 Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...
  • Page 23 Hardware Design Files Figure 4-8. SENS109E1 Hardware SBOU302A – JUNE 2023 – REVISED DECEMBER 2023 EZShunt ™ Digital Current and Power Monitors Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...
  • Page 24 EVM. Figure 4-9. SENS119A Schematic Figure 4-10. SENS119E1 Schematic EZShunt ™ Digital Current and Power Monitors SBOU302A – JUNE 2023 – REVISED DECEMBER 2023 Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...
  • Page 25 Hardware Design Files Figure 4-11. SENS119A Hardware SBOU302A – JUNE 2023 – REVISED DECEMBER 2023 EZShunt ™ Digital Current and Power Monitors Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...
  • Page 26 Hardware Design Files www.ti.com Figure 4-12. SENS119E1 Hardware EZShunt ™ Digital Current and Power Monitors SBOU302A – JUNE 2023 – REVISED DECEMBER 2023 Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...

  • Page 27: Pcb Layout

    Figure 4-14. SENS108E1 Top Overlay Figure 4-13. SENS108A Top Overlay Figure 4-15. SENS108A Top Layer Figure 4-16. SENS108E1 Top Layer SBOU302A – JUNE 2023 – REVISED DECEMBER 2023 EZShunt ™ Digital Current and Power Monitors Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...
  • Page 28 Figure 4-18. SENS108E1 Top Solder Figure 4-19. SENS108A Signal Layer 1 Figure 4-20. SENS108E1 Signal Layer 1 EZShunt ™ Digital Current and Power Monitors SBOU302A – JUNE 2023 – REVISED DECEMBER 2023 Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...
  • Page 29 Figure 4-22. SENS108E1 Signal Layer 2 Figure 4-23. SENS108A Bottom Layer Figure 4-24. SENS108E1 Bottom Layer SBOU302A – JUNE 2023 – REVISED DECEMBER 2023 EZShunt ™ Digital Current and Power Monitors Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...
  • Page 30 Figure 4-25. SENS108A Drill Drawing Figure 4-26. SENS108E1 Drill Drawing Figure 4-28. SENS108E1 Drill Table Figure 4-27. SENS108A Drill Table EZShunt ™ Digital Current and Power Monitors SBOU302A – JUNE 2023 – REVISED DECEMBER 2023 Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...
  • Page 31 Figure 4-30. SENS109E1 Top Overlay Figure 4-29. SENS109A Top Overlay Figure 4-31. SENS109A Top Layer Figure 4-32. SENS109E1 Top Layer SBOU302A – JUNE 2023 – REVISED DECEMBER 2023 EZShunt ™ Digital Current and Power Monitors Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...
  • Page 32 Figure 4-34. SENS109E1 Top Solder Figure 4-35. SENS109A Signal Layer 1 Figure 4-36. SENS109E1 Signal Layer 1 EZShunt ™ Digital Current and Power Monitors SBOU302A – JUNE 2023 – REVISED DECEMBER 2023 Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...
  • Page 33 Figure 4-38. SENS109E1 Signal Layer 2 Figure 4-39. SENS109A Bottom Layer Figure 4-40. SENS109E1 Bottom Layer SBOU302A – JUNE 2023 – REVISED DECEMBER 2023 EZShunt ™ Digital Current and Power Monitors Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...
  • Page 34 Figure 4-41. SENS109A Drill Drawing Figure 4-42. SENS109E1 Drill Drawing Figure 4-44. SENS109E1 Drill Table Figure 4-43. SENS109A Drill Table EZShunt ™ Digital Current and Power Monitors SBOU302A – JUNE 2023 – REVISED DECEMBER 2023 Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...
  • Page 35 Figure 4-45. SENS119A Top Overlay Figure 4-46. SENS119E1 Top Overlay Figure 4-48. SENS119E1 Top Layer Figure 4-47. SENS119A Top Layer SBOU302A – JUNE 2023 – REVISED DECEMBER 2023 EZShunt ™ Digital Current and Power Monitors Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...
  • Page 36 Figure 4-49. SENS119A Top Solder Figure 4-51. SENS119A Signal Layer 1 Figure 4-52. SENS119E1 Signal Layer 1 EZShunt ™ Digital Current and Power Monitors SBOU302A – JUNE 2023 – REVISED DECEMBER 2023 Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...
  • Page 37 Figure 4-54. SENS119E1 Signal Layer 2 Figure 4-55. SENS119A Bottom Layer Figure 4-56. SENS119E1 Bottom Layer SBOU302A – JUNE 2023 – REVISED DECEMBER 2023 EZShunt ™ Digital Current and Power Monitors Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...
  • Page 38 Figure 4-57. SENS119A Drill Drawing Figure 4-58. SENS119E1 Drill Drawing Figure 4-60. SENS119E1 Drill Table Figure 4-59. SENS119A Drill Table EZShunt ™ Digital Current and Power Monitors SBOU302A – JUNE 2023 – REVISED DECEMBER 2023 Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...
  • Page 39 INA745BIRELR Texas Instruments QFN14 2C Interface R745B 4.7k RES, 4.7 k, 5%, 0.1 W, 0603 CRCW06034K70JNEA Vishay-Dale SBOU302A – JUNE 2023 – REVISED DECEMBER 2023 EZShunt Digital Current and Power Monitors Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...
  • Page 40 0603 CRCW060310K0JNEA Vishay-Dale R5, R6, R8 4.7k RES, 4.7 k, 5%, 0.1 W, 0603 0603 CRCW06034K70JNEA Vishay-Dale EZShunt Digital Current and Power Monitors SBOU302A – JUNE 2023 – REVISED DECEMBER 2023 Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...
  • Page 41 Fiducial mark. There is nothing to buy or mount. FID3 J1, J6, J7 3-331272-8 CONN PIN RCPT .018-.021 SOLDERPIN_RCPT PIN_RCPT Connectivity SBOU302A – JUNE 2023 – REVISED DECEMBER 2023 EZShunt Digital Current and Power Monitors Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...

  • Page 42: Additional Information

    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 43 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 44 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 45 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 46 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 47 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 © 2023, Texas Instruments Incorporated...

  • Page 48: Important Notice

    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 © 2023, Texas Instruments Incorporated...

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