Microchip 28-Pin Energy Meter IC 10 bit QFN Min Input -0.3 V 4.5V to

MCP39F521 Energy Measurement ICs

The Microchip MCP39F521 is an Energy Metering IC designed for real-time measurement of input power in single-phase applications. The integrated design offers power monitoring accuracy of 0.1% error and less across a 4000:1 dynamic range.

Parameters Measured

• Active, Reactive and Apparent Power
• True Root Mean Square (RMS) Current and RMS Voltage
• Line Frequency and Power Factor

Features

• Power Monitoring Accuracy of 0.1% Error Across 4000:1 Dynamic Range
• 16-bit Calculation Engine
• 512 Bytes User-Accessible EEPROM
• Flexible I2C Interface
• Low-Drift Internal Voltage Reference, 10 ppm/°C Typical
• 64-bit Wide Import and Export Active Energy Accumulation Registers
• 64-bit Four Quadrant Reactive Energy Accumulation Registers
• Signed Active and Reactive Power Outputs
• Dedicated Zero Crossing Detection (ZCD) Pin Output with Less than 100 μs Latency
• Automatic Event Pin Control through Fast Voltage Surge Detection, Less than 5 MS Delay
• Two Independent Registers for Minimum and Maximum Output Quantity Tracking
• Fast Calibration Routines and Simplified Command Protocol
• Low-Drift Internal Voltage Reference, 10 ppm/°C Typical

Energy/Power Measurement - Microchip