Trends in Three Phase Energy Metering

摘要

A novel isolated ADC architecture has been presented. It contains anisoPower isolated DC-to-DC converter that uses the MCU supply to power the first stage of a multiple channel sigma delta ADC across the isolation barrier. The bit streams coming out of the ADC pass through the iCoupler data isolators and are received by a digital block. This block filters them and creates 24-bit ADC outputs that can be read using a simple SPI interface.