MAX78615-LMU Datasheet, PDF (1/63 Pages) Maxim Integrated Products – Digital Temperature Compensation

MAX78615+LMU
Isolated Energy Measurement Processor
for Load Monitoring Units
GENERAL DESCRIPTION
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)
• Inverters and Renewable Energy Systems
• Level 1 and 2 EV Charging Systems
• Grid-Friendly Appliances and Smart Plugs
BENEFITS AND FEATURES
• Best-in-Class Embedded Algorithms Support
Highly Accurate Electricity Measurements
• Voltage, Current and Frequency
• Active, Reactive and Apparent
Power/Energy
• Power Quality Measurements including
Peak Current and Harmonic Content
• Digital Temperature Compensation
• Configurable Device Provides Design Flexibility
• Nonvolatile Storage of Calibration and
Configuration Parameters
• SPI, I²C, and UART Interface Options
• Configurable I/O Pins for Alarm Signaling,
Address Pins, or User Control
• Highly Integrated Features Support Compact
Designs and Reduced Bill of Materials
• Small 24-TQFN Package
• Internal or External Oscillator Timing
References
• Remote ADC Interfaces Provide Cost-
Effective and Reliable Isolation
• Quick Calibration Routines Minimize
Manufacturing (System) Cost
• Digital Temperature Compensation
MAX78700
MAX78700
Measurement
Processor
Pulse
XFMR
Interface
RAM
UART
SPI
FLASH
I²C
MAX78615+LMU
Digital
I/O
Host
Interface
Load
Relay(s)
For pricing, delivery, and ordering information, please contact Maxim Direct at
1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com.
19-6571; Rev 2; 1/15