TIDA-00222
Measurement Module for Branch Circuit Power Monitor Reference Design
TIDA-00222
Overview
This reference design targets measurement accuracy across the rated current range while at the same time being a cost efficient solution. This is achieved by using a highly integrated SoC device which has up to 7 channels of the 24-bit Delta-Sigma ADCs available for current measurement. For voltage measurement a 10-bit SAR ADC is used. With both current and voltage available, power measurement can now be made. This solution also has several options for communication supported such as UART, JTAG, etc. Applications include load management, sub-panels, etc.
Features
- Precise current measurement through 7 channels of Delta-Sigma ADCs
- < 1% from 10% to 100% of rated current (controlled by CT & burden resistor)
- Voltage measurement enabled with integrated SAR ADC
- Extended temperature range operability of -40°C to +105°C
- Integrated single chip solution results in a cost and area efficient solution
- Large MSP Family & Roadmap / Scale performance, features, price
- Metering library available in source for use on MSPs
- Low cost, easy to use development tools and reference designs / Fast time-to-market
Design files & products
Design files
Download ready-to-use system files to speed your design process.
TIDU430.PDF (3902 K)
Reference design overview and verified performance test data
TIDRB46.PDF (1532 K)
Detailed schematic diagram for design layout and components
TIDRB47.PDF (59 K)
Complete listing of design components, reference designators, and manufacturers/part numbers
TIDRB48.ZIP (278 K)
Detailed overview of design layout for component placement
TIDRB50.ZIP (2157 K)
Files used for 3D models or 2D drawings of IC components
TIDC691.ZIP (216 K)
Design file that contains information on physical board layer of design PCB
TIDRB49.PDF (2022 K)
PCB layer plot file used for generating PCB design layout
Products
Includes TI products in the design and potential alternatives.
General-purpose op amps
OPA4314 — Quad, 5.5-V, 3-MHz, low noise (4.6-nV/√Hz), RRIO operational amplifier
Data sheetMSP430 microcontrollers
MSP430F6779 — Polyphase metering SoC with 7 Sigma-Delta ADCs, LCD, real-time clock, AES, 512KB Flash, 32KB RAM
Data sheetN-channel MOSFETs
CSD17571Q2 — 30-V, N channel NexFET™ power MOSFET, single SON 2 mm x 2 mm, 29 mOhm
Data sheetShunt voltage references
LM4041B — Adjustable, precision micropower shunt voltage reference with 0.2% accuracy
Data sheetStart development
Technical documentation
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| Type | Title | Date | |
|---|---|---|---|
| * | Design guide | Measurement Module for Branch Circuit Power Monitor/Sub Meter (TIDA-00222) | Sep. 30, 2014 |
| Technical article | Tripping point: server power protection using branch circuit monitors | May 09, 2016 |
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