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TIDM-TWOPHASEMETER-I2040
Low-Cost Single/Dual-Phase Isolated Electricity Measurement Reference Design
TIDM-TWOPHASEMETER-I2040
Overview
The design implements a low-cost single- or dual-phase electricity measurement solution. The design separates a small metrology MCU from the host MCU, providing both protection from the AC mains and also isolation of the energy measurement function from corruption by other software. The small, low-cost metrology MCU achieves IEC/ANSI Class 1 accuracy and calculates active and reactive power and energy. This design is implemented using Current Transformer sensors for single and dual-phase measurement. It can also be easily modified for single-phase measurement with shunt resistor sensors.
Features
- Low-cost single-/dual-phase electricity measurement with IEC/ANSI Class 1 accuracy
- 4KV peak Isolation between metrology and host ensure Mains and the metrology subsystem are isolated from other subsystems
- Small 28-pin TSSOP package of metrology MCU reduces board space and simplifies layout to minimize PCB complexity.
- 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
- Low power consumption of metrology MCU reduces cost of power supply
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.
TIDU482A.PDF (2915 K)
Reference design overview and verified performance test data
TIDRAY4.PDF (128 K)
Detailed schematic diagram for design layout and components
TIDRAY5.PDF (244 K)
Complete listing of design components, reference designators, and manufacturers/part numbers
TIDRAY6.ZIP (257 K)
Files used for 3D models or 2D drawings of IC components
TIDC674.ZIP (243 K)
Design file that contains information on physical board layer of design PCB
TIDRAY7.ZIP (459 K)
PCB layer plot file used for generating PCB design layout
Products
Includes TI products in the design and potential alternatives.
MSP430 microcontrollers
MSP430F6638 — 20 MHz MCU with 256KB Flash, 16KB SRAM, 12-bit ADC, 12-bit DAC, comparator, DMA, 160 seg LCD, USB
Data sheet: PDFMSP430 microcontrollers
MSP430I2041 — 16-MHz metering AFE with 4 24-bit sigma-delta ADCs, 2 16-bit timers, 32KB Flash, 2KB RAM
Data sheet: PDF | HTMLStart development
Technical documentation
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| Type | Title | Date | ||
|---|---|---|---|---|
| * | Design guide | Low-Cost Single or Dual-Phase Isolated Electricity Measurement Reference Design (Rev. A) | Jul. 20, 2016 |
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