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TIDA-00601
Multi-phase Energy Measurement with Isolated Shunt Sensors Reference Design
TIDA-00601
Overview
The TIDA-00601 design implements a Class 0.5% three-phase energy measurement system with isolated shunt sensors. The isolation is achieved through the use of isolated delta-sigma modulators that have output circuitry capacitively isolated from input circuitry. An energy measurement SoC takes the different bit-streams from the isolated modulators and uses its on-board digital filters to produce ADC sample readings. The energy measurement SoC is also used for sensing voltages, calculating metrology parameter values, driving the board’s LCD, and communication to a PC GUI via the board’s isolated RS-232 circuitry.
This reference design uses the ISO7420 and ISO7421. This reference design can also be used with the ISO7320C and ISO7321C.
This reference design uses the AMC1304M05. This reference design can also be used with the AMC1304M25.
This reference design uses the MSP430F67641. This reference design can also be used with the MSP430F67641A.
Features
- Class 0.5% three-phase metrology with galvanically isolated shunt current sensors
- Shunt isolation with working isolation voltage up to 1 kV AC and peak isolation voltage of 7kV
- TI Energy Library firmware calculates all energy measurement parameters including active and reactive power and energy, RMS current and voltage, power factor, and line frequency
- Isolated RS-232 with 3 kV RMS operating isolation boundary for communication to PC GUI
- Built-in 160-segment display for display of metrology parameters
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.
TIDREZ9A.PDF (96 K)
Detailed schematic diagram for design layout and components
TIDRF00B.PDF (247 K)
Complete listing of design components, reference designators, and manufacturers/part numbers
TIDRF02A.ZIP (350 K)
Files used for 3D models or 2D drawings of IC components
TIDCAD1.ZIP (288 K)
Design file that contains information on physical board layer of design PCB
TIDRF01.PDF (380 K)
PCB layer plot file used for generating PCB design layout
Products
Includes TI products in the design and potential alternatives.
Isolated ADCs
AMC1304M05 — ±50-mV input, precision current sensing reinforced isolated modulator with LDO
Data sheet: PDF | HTMLIsolated ADCs
AMC1304M25 — ±250-mV input, precision current sensing reinforced isolated modulator with LDO
Data sheet: PDF | HTMLMSP430 microcontrollers
MSP430F67641 — Low-cost polyphase metering SoC with 3 Sigma-Delta ADCs, 10-bit SAR ADC, LCD, 128KB Flash, 8KB RAM
Data sheet: PDF | HTMLMSP430 microcontrollers
MSP430F67641A — Low-cost polyphase metering SoC with 3 Sigma-Delta ADCs, 10-bit SAR ADC, LCD, 128KB Flash, 8KB RAM
Data sheet: PDF | HTMLStart development
Technical documentation
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| Type | Title | Date | ||
|---|---|---|---|---|
| * | User guide | Multi-Phase Energy Measurement With Isolated Shunt Sensors Design Guide (Rev. A) | Aug. 11, 2015 |
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