TIDA-010999

Direct current (DC) electricity meter reference design

TIDA-010999

Design files

Overview

The Direct Current (DC) electricity meter reference design enables end users to evaluate a design combining isolated data converters (ISO-ADC) with an ultra-low-power 32-bit MCU based on the enhanced Arm® Cortex®-M0+ core. This design delivers revenue-grade accuracy appropriate for billing applications.

Features
  • Revenue grade DC metering tested against ANSI C12.32-2021:
    • Class B
  • Wide current range:
    • 0.1A to 1000A
  • Onboard LCD screen:
    • Live updates of energy consumption
  • Attachable bus-bar extension for high-current applications
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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.

PDF | HTML
TIDUFI2.PDF (656 KB)

Reference design overview and verified performance test data

SLVMEZ3.PDF (261 KB)

Detailed overview of design layout for component placement

SLVMEZ5.PDF (165 KB)

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

SLVMEZ4.ZIP (2846 KB)

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

SLVC956.ZIP (236 KB)

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

SLVMEZ2.PDF (1190 KB)

PCB layer plot file used for generating PCB design layout

SLVMEZ1.PDF (308 KB)

Detailed schematic diagram for design layout and components

Products

Includes TI products in the design and potential alternatives.

Isolated ADCs

AMC131M0224-bit, 32-kSPS, 2-channel, simultaneous-sampling, delta-sigma ADC

Data sheet: PDF | HTML
Digital isolators

ISO6731General-purpose, triple-channel, 2/1, digital isolator

Data sheet: PDF | HTML
General-purpose MCUs

MSPM0G150680MHz Arm® Cortex®-M0+ MCU with 64KB flash 32KB SRAM 2x4Msps ADC, 12-bit DAC, 3xCOMP, 2xOPA, MATHACL

Data sheet: PDF | HTML
RS-232 transceivers

TRS32323- to 5.5-V dual channel 250kbps RS-232 line driver/receiver with +/-15-kV ESD protection

Data sheet: PDF | HTML
Low-power MCUs

MSPM0L222832MHz Arm® Cortex®-M0+ MCU with 256KB dual-bank flash, 32KB SRAM, 12-bit ADC, COMP, LCD, VBAT

Data sheet: PDF | HTML

Technical documentation

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Top documentation Type Title Format options Date
* Design guide Direct Current (DC) Electricity Meter Reference Design PDF | HTML Mar 24, 2026

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