The MCP39F511N from Microchip is an integrated, dual-channel, single-phase power monitoring device that provides real-time measurement of input power and energy values for AC/DC power supplies. The capabilities of the MCP39F511N are ideal for applications such as dual-socket wall outlets, power strips, AC/DC power supplies, and power distribution.

On-board are three Analogue-to-Digital Converters (ADCs) for voltage and current load measurement, a 16-bit Calculation Engine, EEPROM and a flexible 2-Wire Interface. An integrated low-drift voltage reference combined with the 94.5 dB of SINAD performance on each measurement channel allows for better than 0.5% accurate designs across a 4000:1 dynamic range.

Power monitoring of two loads
Power monitoring accuracy capable of 0.5% error across 4000:1 dynamic range
Built-in calculations using a 16-Bit processing core measuring:
- Active, reactive and apparent Power
- Active and reactive energy accumulation
- True RMS current, RMS voltage
- Line frequency, power factor
Dedicated Zero Crossing Detection (ZCD) pin
Dedicated PWM output pin
Automatic event pin control through fast voltage surge detection
Fast calibration routines
2-wire UART with 115.2k baud rate
512 bytes user-accessible EEPROM through page read/write commands
Non-volatile on-chip Memory
Low-Drift Internal Voltage Reference: 10 ppm/°C typical
Extended Temperature Range -40°C to +125°C

Energy/Power Measurement - Microchip