Power monitoring chip

19 February 2014 Power Electronics / Power Management

Microchip’s MCP39F501 is a highly integrated, single-phase power monitoring IC for real-time measurement of AC power. It includes two 24-bit delta-sigma ADCs, a 16-bit calculation engine, EEPROM and a flexible two-wire interface. An integrated low-drift voltage reference in addition to 94,5 dB of SINAD performance on each measurement channel allows accurate designs with just 0,1% error across a 4000:1 dynamic range. Built-in calculations include active, reactive and apparent power, RMS current and RMS voltage, line frequency, power factor as well as programmable event notifications. The wide operating temperature range of -40°C to +125°C allows the chip to be used in extreme environments such as industrial machinery, in addition to consumer equipment.

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