1、Maxim MAX78630+PPM 多相电能监测解决方案关键字：工业控制 ,自动化系统,智能电表Maxim 公司的 MAX78630+PPM 是用于多相电能监测系统的能量测量处理器 ,用来实时监测各种三相配置的电能.器件集成了六个可配置的模拟输入 ,支持电流变压器,并联电阻和 Rogowski 线圈,以及 RAM 和闪存, 主要用在工业和商业自动化系统和逆变器与可再生能源系统.本文介绍了 MAX78630+PPM 优势和特性,框图和几种应用框图,以及 MAX78630+PPM 评估板主要特性,框图, 电路图,材料清单和 PCB 元件布局图.The MAX78630+PPM is an ene
2、rgy measurement processor (EMP) for polyphase power monitoring systems. It is designed for real-time monitoring for a variety of typical three-phase configurations in industrial applications. It is available in a 32-pin TQFN package. The MAX78630+PPM provides up to six analog inputs for interfacing
3、to voltage and current sensors. Scaled voltages from the sensors are fed to the single converter front-end utilizing a high-resolution delta-sigma converter. Supported current sensors include current transformers (CT), Rogowski coils, and resistive shunts. An embedded 24-bit measurement processor an
4、d firmware perform all necessary computations and data formatting for accurate reporting to the host. With integrated flash memory for storing nonvolatile calibration coefficients and device configuration settings, the MAX78630+PPM is capable of being a completely autonomous solution. The MAX78630+P
5、PM is designed to interface to the host processor via the UART interface. Alternatively, SPI or I2C may also be used. MAX78630+PPM 优势和特性 : Six Configurable Analog Inputs for Monitoring a Variety of Delta- and Wye-Connected Three-phase Topologies Supports Current Transformers (CT), Resistive Shunts,
6、and Rogowski Coils Delta-Sigma ADC with Precision Voltage Reference and On-Chip Temperature Sensor Internal or External Oscillator Timing Reference SPI, I2C, or UART Interface Options with Configurable I/O pins for alarm Signaling, Address Pins, or User Control 24-Bit Measurement Processor with Inte
7、grated Firmware and Flash Memory for Nonvolatile Storage of Calibration and Configuration Parameters Supports Extraction of Individual Harmonics Small 32-TQFN Package and Reduced Bill of MaterialsThe MAX78630+PPM device integrates all the hardware blocks required for accurate AC power and energy mea
8、surement. Included on the device are: Oscillator and clock management logic Power-on reset, watchdog timer, and reset circuitry High-accuracy Analog Front End (AFE) with trimmed voltage reference and temperature sensor 24-bit measurement processor with RAM and flash memory UART, SPI and I2C serial c
9、ommunication interfaces and multipurpose Digital I/O MAX78630+PPM 应用:Building Automation Systems (Commercial, Industrial)Inverters and Renewable Energy Systems图 1. MAX78630+PPM 框图图 2. MAX78630+PPM 应用示意图图 3. MAX78630+PPM 应用框图 :全绝缘,3VT,3CT 线电流测量图 4. MAX78630+PPM 应用框图 :非绝缘,3 电压分压器,3 分流器MAX78630+PPM 评估板
10、The MAX78630+PPM Evaluation Kit (EV kit) demonstrates the capability of the MAX78630+PPM for monitoring a three-phase AC load using up to three voltages and three currents (sensors included). The EV kit connects to a PC through a USB cable that provides both power and data communication to the board
11、. A Windows-based graphical user interface (GUI) communicates with the device over a virtual for simplified access to measurement data and controls.The MAX78630+PPM EV kit includes the following: MAX78630+PPM EV Board Three 50A Current Transformers (CR Magnetics CR-8449-2500-N) USB Cable Assembly US
12、B A-B 28/24 1.8M (Tyco/Amp 1487588-3) CD with Documentation, GUI Application, and USB Drivers Calibration Coefficients Document (Hardcopy Only) 图 5.MAX78630+PPM 评估板典型应用框图图 6.MAX78630+PPM 评估板电路图(1)图 7.MAX78630+PPM 评估板电路图(2)MAX78630+PPM 评估板材料清单 :AO-Electronics 傲壹电子 官网： 中文网：图 8.MAX78630+PPM 评估板 PCB 元件布局图:顶层图 9.MAX78630+PPM 评估板 PCB 元件布局图:底层
