Isolated Energy Measurement Processor for Load Monitoring Units

The MAX78615+LMU is an isolated energy measurement processor (EMP) for load monitoring and control of any 2-wire single-phase or 3-wire split-phase (120/180°) AC circuit. It provides flexible sensor configuration of up to two MAX78700 (four analog inputs) and numerous host interface options for easy integration into any system architecture.

The internal 24-bit processor and field upgradeable firmware performs all the necessary signal processing, compensation, and data formatting for accurate real-time measurement. Energy accumulation, alarm monitoring, and fault detection schemes minimize the overhead requirements of the host interface and/or network. The integrated flash memory also provides for nonvolatile storage of input configurations and calibration coefficients.

Applications

* Building Automation Systems (Commercial, Industrial) * Grid-Friendly Appliances and Smart Plugs * Inverters and Renewable Energy Systems * Level 1 and 2 EV Charging Systems

* Best-in-Class Embedded Algorithms SupportHighly Accurate Electricity Measurements

* Voltage, Current and Frequency

* Active, Reactive, and Apparent Power/Energy

* Power Quality Measurements IncludingPeak Current and Harmonic Content

* Digital Temperature Compensation

* Configurable Device Provides Design Flexibility

* Nonvolatile Storage of Calibration andConfiguration Parameters

* SPI, I2C, and UART Interface Options

* Configurable I/O Pins for Alarm Signaling, Address Pins, or User Control

* Highly Integrated Features Support CompactDesigns and Reduced Bill of Materials

* Small 24-TQFN Package

* Internal or External Oscillator TimingReferences

* Remote ADC Interfaces Provide Cost-Effective and Reliable Isolation

* Quick Calibration Routines MinimizeManufacturing (System) Cost

* Digital Temperature Compensation