Class 0.5 Three-Phase Energy Measurement System with Enhanced ESD Protection Reference Design


Design files


TIDM-3PH-ENERGY5-ESD implements an ANSI/IEC Class 0.5 three-phase energy measurement system with enhanced electrostatic discharge (ESD) protection. The design also features communications through ZigBee™ connectivity. The energy measurement system on chip (SoC) is used to perform all metrology functions and sends active power results to the CC2530EM add-on board. You can use the companion in-home display reference design (TIDM-LOWEND-IHD) to display results remotely.

This reference design uses MSP430F67641A and can also be used with MSP430F67641.

  • Three-phase energy measurement system which exceeds Class-0.5 accuracy requirements from ANSI and IEC
  • Passed IEC 61000-4-2 level-4 air discharge tests (see design guide for details)
  • Energy library firmware calculates all energy measurement parameters including active and reactive power and energy, RMS current and voltage, power factor and line frequency
  • Support for ZigBee® communication to in-home display or connections to Wi-Fi®, wireless M-Bus, and IEEE-802.15.4g add-on communications modules
  • Automated or manual switching between main and auxiliary power sources for metrology engine
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A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.

TIDUA02.PDF (6281 K)

Reference design overview and verified performance test data

TIDRF46.PDF (103 K)

Detailed schematic diagram for design layout and components

TIDRF47.PDF (196 K)

Complete listing of design components, reference designators, and manufacturers/part numbers

TIDRF49.ZIP (446 K)

Files used for 3D models or 2D drawings of IC components


Design file that contains information on physical board layer of design PCB

TIDRF48.PDF (410 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

MSP430 microcontrollers

MSP430F67641Low-cost polyphase metering SoC with 3 Sigma-Delta ADCs, 10-bit SAR ADC, LCD, 128KB Flash, 8KB RAM

Data sheet: PDF | HTML
MSP430 microcontrollers

MSP430F67641ALow-cost polyphase metering SoC with 3 Sigma-Delta ADCs, 10-bit SAR ADC, LCD, 128KB Flash, 8KB RAM

Data sheet: PDF | HTML
Buck converters (integrated switch)

TPS540603.5V to 60V Input, 0.5A Step-Down Converter with Eco-Mode

Data sheet: PDF | HTML
Low-power 2.4-GHz products

CC2530Zigbee and IEEE 802.15.4 wireless MCU with 256kB Flash and 8kB RAM

Data sheet: PDF
Other wireless products

CC2530-RF4CEZigbee, IEEE 802.15.4 and RF4CE wireless MCU with 256kB Flash and 8kB RAM

Data sheet: PDF

Start development


Technical documentation

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Type Title Date
* Design guide Class 0.5 Three-Phase Energy Measurement System Design Guide Jun. 10, 2015
Technical article Meter anti-tampering: Stopping those pesky meter tamperers Jan. 12, 2016

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