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TIDM-AUX-MODULE

Battery Management and Auxiliary Power Supply Options for E-Meters

Design files

TIDM-AUX-MODULE

Design files

Overview

Smart electric meters are required to maintain normal operation for a short period of time after the electric grid fails. This reference design details methods by which designers can meet this requirement when using an advanced, smart meter MCU. Designers can use this design to evaluate options for battery management and auxiliary power supplies quickly and easily.

Features
  • Two types of power sources for the auxiliary supply of the host MCU: independent regulator with super-cap back-up and (2) AAA batteries
  • Separate power supply for Real-time Clock
  • Automatic time capture of external events for tamper detection
  • Automated or manual switching of power supply
  • Automated power supply monitoring
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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.

download Design guide — TIDM-AUX-MODULE
TIDU452.PDF (18154 K)

Reference design overview and verified performance test data

download Schematic — TIDM-AUX-MODULE
TIDRAI2.PDF (67 K)

Detailed schematic diagram for design layout and components

download Bill of materials (BOM) — TIDM-AUX-MODULE
TIDRAI3.PDF (83 K)

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

download CAD/CAE symbol — TIDM-AUX-MODULE
TIDRAI4.ZIP (316 K)

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

download Gerber file — TIDM-AUX-MODULE
TIDC619.ZIP (296 K)

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

download PCB layout — TIDM-AUX-MODULE
TIDRAI5.ZIP (314 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

Linear & low-dropout (LDO) regulators

TPS770 — 50-mA, 10-V, low-IQ, low-dropout voltage regulator

Data sheet: PDF
MSP430 microcontrollers

MSP430F67791A — Polyphase metering SoC with 7 Sigma-Delta ADCs, LCD, real-time clock, 512KB Flash, 32KB RAM

Data sheet: PDF | HTML

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Software

Technical documentation

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Type Title Date
* Design guide Battery Management and Auxiliary Power Supply Options for e-Meters Design Guide Aug. 27, 2014
Technical article Meter anti-tampering: Stopping those pesky meter tamperers Jan. 12, 2016

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