Texas Instruments EZShunt INA780 Manual
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Texas Instruments EZShunt INA780 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.
SBOU302 – JUNE 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
Copyright © 2023 Texas Instruments Incorporated
EZShunt
™
Digital Current and Power Monitors
Description
1

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Summary of Contents for Texas Instruments EZShunt INA780

  • Page 1 SCB real-time data capture. The EVM has I2C inputs. SBOU302 – JUNE 2023 EZShunt ™ Digital Current and Power Monitors Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...

  • Page 2: Kit Contents

    16 – bit Interface Compensation ALERT Bus Voltage Temperature Alert_Diag Figure 1-1. Functional Block Diagram for 16-bit digit Device Variant ™ EZShunt Digital Current and Power Monitors SBOU302 – JUNE 2023 Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...

  • Page 3: Device Information

    INA745A 900 µΩ 40 V 16-bit INA745B 16-bit INA746 20-bit INA780A 560 mΩ 85 V 16-bit INA780B 16-bit INA781 20-bit ™ SBOU302 – JUNE 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 SBOU302 – JUNE 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 ™ SBOU302 – JUNE 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 SBOU302 – JUNE 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 EVM in an adequate lucent plastic box with interlocks from accidental touch. Limitation for safe use: EVMs are not to be used as all or part of a production unit. ™ EZShunt Digital Current and Power Monitors SBOU302 – JUNE 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 ™ SBOU302 – JUNE 2023 EZShunt Digital Current and Power Monitors Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...
  • Page 10 For first-time GUI Composer setup, follow the prompts to download the TI Cloud Agent and browser extension shown in Figure 3-3. Close the README.md dialog box to see these prompts. Figure 3-3. TI Cloud Agent ™ EZShunt Digital Current and Power Monitors SBOU302 – JUNE 2023 Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...
  • Page 11 Figure 3-7. Change Serial Port 6. If the hardware still does not connect, then make sure the correct GUI/EVM combination is being used. ™ SBOU302 – JUNE 2023 EZShunt Digital Current and Power Monitors Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...

  • Page 12: Gui Operation

    Use the Selected EVM drop-down menu at the top to choose which device to work with on the register map. ™ EZShunt Digital Current and Power Monitors SBOU302 – JUNE 2023 Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...
  • Page 13 Below is a description of how to use the buttons and settings at the top of the results data page and next to each plot: • Results to collect/show ™ SBOU302 – JUNE 2023 EZShunt Digital Current and Power Monitors Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...
  • Page 14 – Changing this number clears out the plot buffers, so the plots are cleared on the next read. – Y-Axis Options • Manual Scale ™ EZShunt Digital Current and Power Monitors SBOU302 – JUNE 2023 Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...
  • Page 15 For example, to write register address 0x1 with the value 0xfb69, some valid commands include: ™ SBOU302 – JUNE 2023 EZShunt Digital Current and Power Monitors Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...
  • Page 16 The register address that was read from the device. – registerSize (1 byte) • The number of bytes that the following data has. ™ EZShunt Digital Current and Power Monitors SBOU302 – JUNE 2023 Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...
  • Page 17 – Where stop is always lower case. – The EVM returns the acknowledgment and state in JSON format: {"acknowledge":"stop"} {"evm_state":"idle"} ™ SBOU302 – JUNE 2023 EZShunt Digital Current and Power Monitors Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...
  • Page 18 4.1.1 SENS108 (INA740AEVM, INA740BEVM, INA741EVM) Figure 4-1 Figure 4-2 show the schematic and the mechanical components of the EVM. Figure 4-1. SENS108E1-002 Schematic (INA740BEVM) ™ EZShunt Digital Current and Power Monitors SBOU302 – JUNE 2023 Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...
  • Page 19 Hardware Design Files Figure 4-2. SENS108E1 Hardware ™ SBOU302 – JUNE 2023 EZShunt Digital Current and Power Monitors Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...
  • Page 20 Figure 4-4 show the schematic and mechanical components of the EVM. Figure 4-3. SENS109E1-003 Schematic (INA746EVM) Figure 4-4. SENS109E1 Hardware ™ EZShunt Digital Current and Power Monitors SBOU302 – JUNE 2023 Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...
  • Page 21 4.1.3 SENS119 (INA780AEVM, INA780BEVM, INA781EVM) Figure 4-5 Figure 4-6 show the schematic and mechanical components of the EVM. Figure 4-5. SENS119E1-001 Schematic (INA780AEVM) ™ SBOU302 – JUNE 2023 EZShunt Digital Current and Power Monitors Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...
  • Page 22 Hardware Design Files www.ti.com Figure 4-6. SENS119E1 Hardware ™ EZShunt Digital Current and Power Monitors SBOU302 – JUNE 2023 Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...

  • Page 23: Pcb Layout

    Figure 4-7. SENS108 Top Overlay Figure 4-8. SENS108 Top Layer Figure 4-9. SENS108 Top Solder Figure 4-10. SENS108 Signal Layer 1 ™ SBOU302 – JUNE 2023 EZShunt Digital Current and Power Monitors Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...
  • Page 24 Figure 4-12. SENS108 Bottom Layer Figure 4-11. SENS108 Signal Layer 2 Figure 4-14. SENS108 Drill Table Figure 4-13. SENS108 Drill Drawing ™ EZShunt Digital Current and Power Monitors SBOU302 – JUNE 2023 Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...
  • Page 25 Figure 4-15. SENS109 Top Overlay Figure 4-16. SENS109 Top Layer Figure 4-17. SENS109 Top Solder Figure 4-18. SENS109 Signal Layer 1 ™ SBOU302 – JUNE 2023 EZShunt Digital Current and Power Monitors Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...
  • Page 26 Figure 4-20. SENS109 Bottom Layer Figure 4-19. SENS109 Signal Layer 2 Figure 4-22. SENS109 Drill Table Figure 4-21. SENS109 Drill Drawing ™ EZShunt Digital Current and Power Monitors SBOU302 – JUNE 2023 Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...
  • Page 27 Figure 4-23. SENS119 Top Overlay Figure 4-24. SENS119 Top Layer Figure 4-25. SENS119 Top Solder Figure 4-26. SENS119 Signal Layer 1 ™ SBOU302 – JUNE 2023 EZShunt Digital Current and Power Monitors Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...
  • Page 28 Figure 4-28. SENS119 Bottom Layer Figure 4-27. SENS119 Signal Layer 2 Figure 4-30. SENS119 Drill Table Figure 4-29. SENS119 Drill Drawing ™ EZShunt Digital Current and Power Monitors SBOU302 – JUNE 2023 Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...
  • Page 29 Package Reference Part Number Manufacturer 40-V, Integrated Sense Element, 20-Bit, Precision Power/Energy/Charge Monitor With I INA746AIRELR Texas Instruments QFN14 2C Interface SBOU302 – JUNE 2023 EZShunt Digital Current and Power Monitors Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...
  • Page 30 CAP, CERM, 1 uF, 50 V, +/- 10%, X6S, 0603 0603 C1608X6S1H105K080AC FID1, FID2, Fiducial mark. There is nothing to buy or mount. FID3 EZShunt Digital Current and Power Monitors SBOU302 – JUNE 2023 Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...
  • Page 31 CONN PIN RCPT .018-.021 SOLDERPIN_RCPT PIN_RCPT Connectivity MP1, MP2 Terminal Connector Rectangular Lug, Grounding 6-14 AWG 1/4 Stud TERMINAL_CONN LAMA6-14-QY Panduit SBOU302 – JUNE 2023 EZShunt Digital Current and Power Monitors Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...
  • Page 32 40-V, Integrated Sense Element, 20-Bit, Precision Power/Energy/Charge Monitor With I INA746AIRELR Texas Instruments QFN14 2C Interface R746 4.7k RES, 4.7 k, 5%, 0.1 W, 0603 CRCW06034K70JNEA Vishay-Dale EZShunt Digital Current and Power Monitors SBOU302 – JUNE 2023 Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...
  • Page 33 CONN PIN RCPT .018-.021 SOLDERPIN_RCPT PIN_RCPT Connectivity MP1, MP2 Terminal Connector Rectangular Lug, Grounding 6-14 AWG 1/4 Stud TERMINAL_CONN LAMA6-14-QY Panduit SBOU302 – JUNE 2023 EZShunt Digital Current and Power Monitors Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...

  • Page 34: 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 35 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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