Single-Phase Electric Meter with Isolated Energy Measurement

(ACTIVE) TIDM-METROLOGY-HOST

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Key Document

Description

Electric meter developers often prefer to separate the energy measurement function from the host processor functions such as ANSI/IEC data tables, DLMS/COSEM, tariff management, and communications. This design demonstrates a method for keeping these meter functions separated by using an individual metrology processor and host processor. The firmware supplied with the design manages all of the required functions and synchronization between the processors. The design also demonstrates how to isolate communications between the two processors to achieve the necessary safety requirements. Finally, this design demonstrates a method for meter calibration using the USB interface on an MSP430 MCU. Engineers will be able to more quickly develop smart meters with isolated metrology functions by reusing this reference design.

Features
  • Simplified meter calibration by using USB connection
  • Isolated communications between metrology AFE and host MCU
  • TI Energy Library for metrology calculates all energy measurement parameters
  • Host MCU application controls on-board LCD and meter calibration
  • Single-phase energy measurement achieves Class 0.2 accuracy
  • Segment LCD on board

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Bill of Materials (BOM)

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TI Devices (8)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
CC2530  Second Generation System-on-Chip Solution for 2.4 GHz IEEE 802.15.4 / RF4CE / ZigBee  SimpleLink Solutions  Sample & Buy View Design Kits & Evaluation Modules
CC2530-RF4CE  Second Generation System-on-Chip Solution for 2.4 GHz IEEE 802.15.4 / RF4CE / ZigBee  SimpleLink Solutions  Sample & Buy View Design Kits & Evaluation Modules
ISO7420  Low Power Dual Channel Isolators  Isolation  Sample & Buy View Design Kits & Evaluation Modules
ISO7421  Dual Channel, 1/1, 1Mbps Digital Isolator   Isolation  Sample & Buy View Design Kits & Evaluation Modules
MSP430AFE253  16-bit Ultra-Low-Power Microcontroller, 16KB Flash, 512B RAM, 3x SD24  MSP430 ultra-low-power MCUs  Sample & Buy View Design Kits & Evaluation Modules
MSP430F6638  MSP430F6638 Mixed Signal Microcontroller  MSP430 ultra-low-power MCUs  Sample & Buy View Design Kits & Evaluation Modules
TPD4E004  4-Channel ESD Protection Array for High-Speed Data Interfaces  Circuit protection  Sample & Buy View Design Kits & Evaluation Modules
TPS770  10-V, 50-mA, Low-Iq, Low-Dropout Linear Regulator  Power management  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
CC2530 Download Download
CC2530-RF4CE Download
ISO7420 Download Download
ISO7421 Download Download
MSP430AFE253 Download Download
MSP430F6638 Download Download
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TPD4E004 Download Download
TPS770 Download Download

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Technical Documents

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.

User guides (1)
Title Abstract Type Size (KB) Date Views TI Recommends
PDF 5621 13 Jan 2016 0
Design files (5)
Title Abstract Type Size (KB) Date Views
ZIP 452 15 Sep 2014 0
ZIP 299 15 Sep 2014 0
PDF 100 15 Sep 2014 0
PDF 120 15 Sep 2014 0
ZIP 212 15 Sep 2014 0
Related Tools & Software

Software (1)


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