Isolated Shunt Current Measurement with Standalone Digital Filters Reference Design
Description
This reference design implements a class 0.5 three phase energy measurement system with isolated shunt sensors by using isolated modulators and independent digital filters: enabling a wider choice of host microcontrollers (MCU) as integrated sync filters are no longer required. In this design: currents sensed by the isolated modulators and phase voltages sensed by the host microcontroller are synchronized; supporting the addition of advanced metrology algorithms using the Simplelink™ ARM Cortex M4 host MCU. The design is immune from magnetic tamper attacks through the use of current sensors and power supplies that do not use any transformers or other magnetic components. This subsystem design is tested and includes hardware.
Features
- Class 0.5 three-phase metrology with galvanically isolated(up to 600 VRMS and peak isolation voltage of 4 kVRMS) shunt current sensorsGalvanically isolated shunt current sensors and cap-drop supplies enable magnetic immunityStandalone digital filters enable using host microcontrollers without digital filters: thereby increasing design portabilitySynchronized voltage and current samples across all phases along with ARM® Cortex® M4 host MCU supports adding advanced metrology algorithmsActive and reactive energy: root mean square (RMS) current and voltage: power factor: and line frequency calculations
Applications
- Electricity meter
- Spectrometer
- Semiconductor manufacturing
- Automotive test
- Power quality analyzer
- Energy storage battery packs (with BMS)
- Radar
- Source measurement unit (SMU)
- Battery test
Product Categories
- Data converters