原标题：Cirrus CS5463功率监测参考设计方案

　　Cirrus 公司的CS5463是完整的功率测量器件，集成了两个ADC，功率计算引擎，能量-频率转换器以及串行接口。能精确测量即时电流和电压，计算VRMS，IRMS，即时功率。表观功率，有用功率和无功功率，适用于单相，2相或三相电表应用。测量动态范围1000:1，读数精度±0.1%，满足IEC, ANSI, JIS精度要求，主要应用在数字电表，插入监视器，电器功率监测，服务器/电信，户外照明和荧光灯功率监视，LED照明镇流器等。本文介绍了CS5463主要特性，功能方框图，数据测量流程图，功率计算流程图，校准数据流程图，多种连接图，以及CRD5463PM功率监视参考设计主要特性，简化方框图，电路图和材料清单。

　　The CS5463 is an integrated power measurement device which combines two analog-to-digital converters, power calculation engine, energy-to-frequency converter, and a serial interface on a single chip. It is designed to accurately measure instantaneous current and voltage, and calculate VRMS, IRMS, instantaneous power, apparent power, active power, and reactive power for single-phase, 2- or 3-wire power metering applications.

　　The CS5463 is optimized to interface to shunt resistors or current transformers for current measurement, and to resistive dividers or potential transformers for voltage measurement. The CS5463 features a bi-directional serial interface for communication with a processor and a programmable energy-to-pulse output function.

　　Additional features include on-chip functionality to facilitate system-level calibration, temperature sensor, voltage sag detection, and phase compensation.

　　CS5463主要特性：

　　Energy Data Linearity: ±0.1% of Reading over 1000:1 Dynamic Range

　　On-chip Functions:

　　- Instantaneous Voltage, Current, and Power

　　- IRMS and VRMS, Apparent, Reactive, and Active (Real) Power

　　- Active Fundamental and Harmonic Power

　　- Reactive Fundamental,Power Factor, and Line Frequency

　　- Energy-to-pulse Conversion

　　- System Calibrations and Phase Compensation

　　- Temperature Sensor

　　Meets accuracy spec for IEC, ANSI, JIS.

　　Low Power Consumption

　　Current Input Optimized for Sense Resistor.

　　GND-referenced Signals with Single Supply

　　On-chip 2.5 V Reference (25 ppm/℃ typ)

　　Power Supply Monitor

　　Simple Three-wire Digital Serial Interface

　　“Auto-boot” Mode from Serial E2PROM

　　Power Supply Configurations:

　　VA+ = +5 V; AGND = 0 V; VD+ = +3.3 V to +5 V

　　CS5463主要应用：

　　Digital Power Meter

　　Plug Monitor

　　Appliance Power Monitoring

　　Servers/Telecom

　　Fluorescent Lighting Ballast

　　Outdoor Lighting Power Monitoring

　　Fluorescent Lighting Power Monitoring

　　LED Lighting Ballast

　　Power Strip Monitoring

　　图1。CS5463功能方框图

　　图2。CS5463数据测量流程图

　　图3。CS5463功率计算流程图

　　图4。CS5463校准数据流程图

　　图5。CS5463典型连接图(单相，2线直接连接到动力线)

　　图6。CS5463典型连接图(单相，2线，和动力线隔离)

　　图7。CS5463典型连接图(单相，3线)

　　图8。CS5463典型连接图(单相，3线，无零线)

　　CRD5463PM功率监视参考设计

　　The CRD5463PM demonstrates the CS5463 power measurement IC. It has an integrated AC-DC power supply, voltage and current sensors, and isolated UART/USB interface. Working with the GUI software, it provides accurate real-time measurements of line voltage, load current, line frequency, active power, reactive power, apparent power, power factor, and temperature.

　　The CRD5463PM includes two power cords, a USB cable, and a plug adaptor. When used with a PC, the CRD5463PM immediately becomes a high-precision power meter. The UART interface communication protocol, GUI, and MCU software source codes are also available from Cirrus Logic.

　　The CRD5463PM is a useful design reference and evaluation tool for customers to develop power metering/monitoring systems that use the CS5463 IC.

　　CRD5463PM功率监视参考设计主要特性：

　　Easy Plug-and-play Design

　　USB Communication with PC

　　Real-time Measurements:

　　– Line Voltage

　　– Load Current

　　– Active Power

　　– Reactive Power

　　– Apparent Power

　　– Power Factor

　　– Line Frequency

　　– Temperature

　　Operational Voltage: 90 ~ 260 VAC

　　Maximum Load Current: 15 A RMS

　　Active Power Measurement Accuracy:

　　– 0.2%,3 ~ 3900 W

　　Lab Windows™/CVI™ GUI Software

　　Factory Calibrated, Re-calibration Capable

　　图9。CRD5463PM功率监视参考设计外形图

　　图10。CRD5463PM简化方框图

　　图11。CRD5463PM功率监视参考设计电路图(1)

　　图12。CRD5463PM功率监视参考设计电路图(2)

　　CRD5463PM功率监视参考设计材料清单：