The MCP39F511A consumption monitoring IC is a highly integrated device that addresses the growing need for more accurate consumption measurement in high-performance designs. Consumption monitoring has become increasingly important in booming markets such as smart cities and smart homes, as developers seek to monitor product performance and improve energy efficiency. To simplify calibration procedures and meet most accuracy requirements, the device includes two 24-bit delta-sigma A/D converters with a signal-to-noise ratio plus distortion (SINAD) of 94.5 dB and a 16-bit calculation engine. Suitable for various consumer, Internet of Things, and industrial applications, the MCP39F511A automatically detects the power supply type and switches between AC and DC modes, thereby optimizing measurement results. The device also helps developers troubleshoot with an integrated EEPROM that records critical events, as well as a low-drift voltage reference and an internal oscillator that reduces implementation costs.
Other advantages of the MCP39F511A include its flexibility and ease of implementation. The device offers the most common consumption calculations, such as active, reactive, and apparent power; active and reactive energy; RMS current and voltage; line frequency; and power factor. This allows designers to easily and accurately add consumption monitoring functions to end applications with minimal firmware development.
The MCP39F511A incorporates advanced features that further simplify development, such as automatic logging and automatic loading of consumption data to and from the EEPROM in the event of a power failure or at startup, ensuring that measurement results are never lost in the event of an unexpected power outage. Event monitoring for different consumption profiles also improves preventative system maintenance and allows developers to better manage power consumption.
The device is supported by the MCP39F511A Power Monitor demonstration board (ADM00667). Priced at $150, it is a fully functional single-phase power and energy monitoring system. The system calculates and displays active power, reactive power, RMS current, RMS voltage, active energy (imported and exported), and reactive energy in all four quadrants. It easily connects via USB to the Power Monitor Utility software, which offers automatic control, allowing users to easily evaluate all system configuration settings.
The MCP39F511A is now available.
