Accurate real-time power monitoring of multiple loads

Microchip has added the MCP39F511N to its power-monitoring IC portfolio. The device is said to be capable of providing standard power calculations and event monitoring of two electrical loads, this integrated, accurate device helps system designers to reduce system cost of power-monitoring wall outlets and smart plugs, power strips, AC/DC power supplies and power distribution applications. The device features three Analogue-to-Digital Convertors (ADCs) for voltage and two current-load measurements, a 16-bit calculation engine, EEPROM and a flexible 2-wire interface.

The MCP39F511N dual-channel power-monitoring IC is also said to facilitate the design of power hungry appliances, machinery and systems as it reduces firmware development and the number of ICs required for power monitoring of multiple loads.

An integrated low-drift voltage reference in addition to the 94.5dB of SINAD performance on each current measurement channel allows the MCP39F511N to monitor two current loads with 0.5% error across a 4000:1 dynamic range.The ability to measure active, reactive and apparent power, active and reactive energy accumulation, RMS current and RMS voltage, line frequency, and power factor combined with advanced, integrated features allows system designers of high-performance devices to reduce bill of materials and time-to-market.

The MCP39F511N is available in a 28-lead, 5 x 5mm QFN package and is supported by Microchip’s MCP39F511N Power Monitor Demonstration Board (ADM00706).