MAX78615+PPM Isolated Energy Measurement Processor for Polyphase Monitoring Systems General Description Benefits and Features The MAX78615+PPM is part of an isolated energy mea- Best-In-Class Embedded Algorithms Support Highly surement processor (EMP) chipset for polyphase power Accurate Electricity Measurements monitoring systems. It is designed for real-time monitor- Voltage, Current, and Frequency ing for a variety of typical three-phase configurations in Active, Reactive, and Apparent Power/Energy industrial applications. Power Quality Measurements Including Peak Current and Harmonic Content The device provides flexible sensor configuration for up Digital Temperature Compensation to three MAX78700s or MAX71071s that provide up to six isolated analog inputs for interfacing to voltage and Configurable Device Provides Design Flexibility Nonvolatile Storage of Calibration and Configura - current sensors. Scaled voltages from the sensors are fed to the isolated front-end utilizing a high-resolution tion Parameters. 2 SPI, I C, or UART Interface Options delta-sigma converter. Supported current sensors include Configurable I/O Pins for Alarm Signaling, Address resistive shunts and current transformers (CTs). Pins, or User Control An embedded 24-bit measurement processor and firm- Highly Integrated Features Support Compact Designs ware perform all necessary computations and data for- and Reduced Bill of Materials matting for accurate reporting to the host. With integrated Small 24-Pin TQFN Package flash memory for storing nonvolatile calibration coefficients Internal or External Oscillator Timing References and device configuration settings, the MAX78615+PPM Three Remote ADC Interfaces Provide Cost- can be a completely autonomous solution. Effective and Reliable Isolation The MAX78615+PPM is designed to interface to the host Quick Calibration Routines Minimize Manufacturing 2 processor through the UART, SPI, or I C interfaces, and (System) Cost is available in a 24-pin TQFN package. Digital Temperature Compensation Applications Polyphase Submetering Building Automation Systems Inverters and Renewable Energy Systems Level 1 and 2 EV Charging Systems Grid-Friendly Appliances and Smart Plugs Ordering Information appears at end of data sheet. Simplified Block Diagram ISOLATION MAX78700 UART 24-BIT VOLTAGE SENSOR OR CURRENT SENSOR MEASUREMENT MAX71071 PROCESSOR SPI RAM MAX78700 PULSE UART VOLTAGE SENSOR DIGITAL OR XFMR CURRENT SENSOR I/O HOST MAX71071 INTERFACE CONTROLLER XTAL AND CLOCK FLASH MANAGEMENT MAX78700 VOLTAGE SENSOR MAX78615+PPM OR CURRENT SENSOR MAX71071 19-7541 Rev 0 3/15MAX78615+PPM Isolated Energy Measurement Processor for Polyphase Monitoring Systems Absolute Maximum Ratings Supplies and Ground Pins RESET and Digital Pins V .....................................................................-0.5V to 4.6V Configured as Inputs ...................................-10mA to +10mA, DD GND ..................................................................-0.5V to +0.5V -0.5V to +6V Analog Input Pins Operating Junction Temperature AV1, AV2, AV3, AI1, AI2, AI3 .........................-10mA to +10mA Peak, 100ms ................................................................+140C -0.5V to (V + 0.5V) Continuous...................................................................+125C DD Oscillator Pins: Storage Temperature Range ............................ -45C to +165C XIN, XOUT .................................................... -10mA to +10mA Lead Temperature (soldering, 10s) .................................+260C -0.5V to 3.0V Soldering Temperature (reflow) .......................................+300C Digital Pins: ESD Stress on All Pins ........................................................4kV Digital Pins Configured as Outputs .............-30mA to +30mA, -0.5 to (V + 0.5V) DD Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Recommended External Components NAME FROM TO FUNCTION VALUE UNITS XTAL XIN XOUT 20.000MHz 20.000 MHz CXS XIN GND 18 10% pF Load capacitor for crystal (exact value depends on crystal specifications and parasitic capacitance of board) CXL XOUT GND 18 10% pF Recommended Operating Conditions PARAMETER CONDITIONS MIN TYP MAX UNITS 3.3V Supply Voltage (V ) Normal operation 3.0 3.3 3.6 V DD Operating Temperature -40 +85 C Performance Specifications (Note that production tests are performed at room temperature.) PARAMETER CONDITIONS MIN TYP MAX UNITS INPUT LOGIC LEVELS Digital High-Level Input Voltage (V ) 2 V IH Digital Low-Level Input Voltage (V ) 0.8 V IL OUTPUT LOGIC LEVELS V - DD I = 1mA V LOAD 0.4 Digital High-Level Output Voltage (V ) OH V - DD I = 10mA V LOAD 0.6 I = 1mA 0 0.4 V LOAD Digital Low-Level Output Voltage (V ) OL I = 10mA 0.5 V LOAD SUPPLY CURRENT V Current DD Normal operation, V = 3.3V 8.1 10.3 mA DD (Compounded) Maxim Integrated 2 www.maximintegrated.com