Dolphin puts smart meter measurement subsystem into single IC
January 21, 2015
The potential for a complete measurement subsystem for a single-phase power meter to be placed into a single IC has been developed by French company Dolphin Integration. The IP is aimed at system-on-chip (SoC) integrators targeting the growing smart grid related markets, such as utility billing meters or smart plugs.
The Metro-PM-Jade-mono.05 product is available in main technological processes at 130nm. Users can benefit from a high-resolution mixed-signal front-end and a dense power and energy computation engine. Furthermore, this product embeds a low drift voltage reference and a low noise voltage regulator to reduce the bill of material and increase safety thanks to lower supply noise constraints.
Dolphin Integration unveiled the silicon measurement report in TSMC’s 130nm BCD process for its silicon qualifier containing the analogue front end, and demonstrated its ability to achieve high-class performances for power metering applications.
This analogue front end has been tested with a current transformer sensor and has a signal-to-noise ratio up to 106.0dB on the I-channel and 102.8dB on the V-channel. Its performances enable power-metering subsystems to achieve class 0.1 performances with a range beyond 1/5000 at the system level.