Microchip introduces highly accurate power-monitoring IC

Microchip has unveiled a new power-monitoring IC, the MCP39F501. This device is a highly integrated, single-phase power-monitoring IC designed 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.

The MCP39F501 power-monitoring IC has been designed to allow designers to add power monitoring to their applications with minimal firmware development. Its performance enables designs capable of 0.1% error over a wider dynamic range and superior light load measurement compared to current competing solutions.

In an effort to improve power-management schemes in power-hungry applications, such as data centres, lighting and heating systems, industrial equipment and consumer appliances, power-system designers are driving the need for enhanced power monitoring solutions such as better accuracy across current loads, additional power calculations and event monitoring of various power conditions. The 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 MCP39F501 device enables high-performance, cost-effective designs such as commercial server and networking power supplies, power distribution units and lighting systems; consumer products such as appliances and smart plugs; and industrial products which include power meters and industrial equipment, among others. In addition, the wide operating temperature range of -40°C to +125°C allows the MCP39F501 to be used in more extreme environments, such as industrial machinery applications.



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