Multi-phase Energy Measurement with Isolated Shunt Sensors Reference Design
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Key Document
Description
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
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Schematic/Block Diagram
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Test Data
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TI Devices (10)
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| Sample & Buy |
Design Kits & Evaluation Modules |
| AMC1304M05 |
Reinforced Isolated Modulator With LDO Regulator, ±50mV Input, and CMOS Interface |
Isolation |
Sample & Buy |
View Design Kits & Evaluation Modules |
| AMC1304M25 |
Reinforced Isolated Modulator With LDO Regulator, ±250mV Input, and CMOS Interface |
Isolation |
Sample & Buy |
View Design Kits & Evaluation Modules |
| ISO7320C |
Robust EMC, Low Power, Dual-Channel 2/0 Digital Isolator, Fail-Safe High |
Isolation |
Sample & Buy |
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| ISO7321C |
Robust EMC, Low Power, Dual-Channel 1/1 Digital Isolator, Fail-safe High |
Isolation |
Sample & Buy |
View Design Kits & Evaluation Modules |
| ISO7420 |
Low Power Dual Channel Isolators |
Isolation |
Sample & Buy |
View Design Kits & Evaluation Modules |
| ISO7421 |
Dual Channel, 1/1, 1Mbps Digital Isolator |
Isolation |
Sample & Buy |
View Design Kits & Evaluation Modules |
| MSP430F67641 |
MSP430F676x1 - Low cost 3-phase metering SOC |
MSP430 ultra-low-power MCUs |
Sample & Buy |
View Design Kits & Evaluation Modules |
| MSP430F67641A |
MSP430F676x1A Polyphase Metering SoCs |
MSP430 ultra-low-power MCUs |
Sample & Buy |
View Design Kits & Evaluation Modules |
| SN6501 |
Low-noise, 350-mA, 410-kHz transformer driver for isolated power supplies |
Isolation |
Sample & Buy |
View Design Kits & Evaluation Modules |
| TRS3232 |
3-V to 5.5-V Multichannel RS-232 Line Driver/Receiver With +/-15-kV ESD Protection |
Interface |
Sample & Buy |
Not Available |
CAD/CAE symbols
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Texas Instruments and Accelerated Designs, Inc. have collaborated together to provide TI customers with schematic symbols and PCB layout footprints for TI products.
Step 1: Download and install the free download.
Step 2: Download the Symbol and Footprint from the CAD.bxl file table.
Step 3: Open the .bxl file with the Ultra Librarian software.
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Technical Documents
View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.
User guides (1)
| Title | Abstract | Type | Size (KB) | Date |
| | | PDF | 26777 |
11 Aug 2015
|
Design files (5)
| | | PDF | 247 |
17 Jan 2017
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| | | ZIP | 350 |
12 Aug 2015
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| | | PDF | 96 |
12 Aug 2015
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| | | ZIP | 288 |
28 May 2015
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| | | PDF | 380 |
28 May 2015
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