Power monitoring IC measures AC power in real-time

Power monitoring IC measures AC power in real-time

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By eeNews Europe

The MCP39F501 power monitoring IC  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 0.1 % error across a 4000:1 dynamic range.

The IC allows designers to add power monitoring to their applications with minimal firmware development.  The device’s performance enables designs capable of 0.1% error over a wider dynamic range and superior light load measurement versus current competing solutions.  In an effort to improve power management schemes in power-hungry applications, such as data centers, lighting and heating systems, industrial equipment and consumer appliances, power-system designers are driving the need for enhanced power monitoring solutions.  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 in the commercial (server and networking power supplies, power distribution units, lighting systems); consumer (appliance and smart plugs); and industrial markets (e.g., power meters and industrial equipment), among others.  Additionally, the wide operating temperature range from -40°C to +125°C allows the MCP39F501 to be utilized in more extreme environments, such as industrial machinery applications.

Availability and Pricing

The MCP39F501 is available now for sampling and volume production in 28-lead QFN 5 mm x 5 mm packages, for $1.82 each, in 5,000-unit quantities.

The MCP39F501 will be supported by Microchip’s MCP39F501 Demonstration Board (Part # ARD00455, $89.99), which is expected to be available on February 14.
More information about the MCP39F501 at

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