概览

简介

电力线通信 (PLC) 是一个快速发展的市场。利用瑞萨电子市场领先的第三代电力线通信调制解调器解决方案,本解决方案说明了如何在物联网应用中使用 PLC。在本设计中,我们利用瑞萨 RL78/I1C MCU 来测量交流电力线的电压/电流/相位。然后,这些数据将通过 PLC 从 RL78/G13 MCU 传输至 CPX3 调制解调器 SoC。这些设备由 ISL85415 降压稳压器供电;同时还会使用瑞萨光电耦合器进行过零检测及保护 CPX3 免受潜在电压尖峰影响。

系统优势:

  • 可用于任何 PLC 协议标准,例如 PRIME 1.3.6/1.4 与 G3
  • 采用低功耗设计,可在小空间内提供高效率
  • RL78/I1C 专门设计用于满足智能电表市场的需求
  • PS2561F-1 光电耦合器提供 5000Vrms 隔离电压和高速开关

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4:3 ratio Sheet.26 Sheet.27 Sheet.1 Sheet.2 Sheet.3 Sheet.4 US012 US012 US012 CPX3 CPX3 CPX3 Buck Regulator Buck Regulator Buck Regulator Photocoupler Photocoupler Photocoupler TX Filter TX Filter TX Filter RX Filter RX Filter RX Filter Serial FLASH Serial FLASH Serial FLASH Line Interface & Step Down Circuit Line Interface & Step Down Circuit Line Interface & Step Down Circuit Analog Signal Line Conditioning Analog Signal Line Conditioning Analog Signal Line Conditioning Ground Sheet.23 Sheet.24 Sheet.25 Sheet.28 Sheet.29 Sheet.30 Sheet.31 Sheet.32 Sheet.33 Sheet.34 Sheet.35 Sheet.36 Sheet.37 Sheet.38 Sheet.39 Sheet.40 Sheet.41 Sheet.42 Sheet.43 Sheet.44 Sheet.45 Sheet.46 Sheet.47 Sheet.48 Sheet.49 Sheet.50 Sheet.51 Sheet.52 Sheet.53 Sheet.54 Sheet.55 Sheet.56 Sheet.57 Sheet.58 Sheet.59 12V 12V 12V TXD TXD TXD RXD RXD RXD Zero-Cross Detect Zero-Cross Detect Zero-Cross Detect 12V 12V 12V Connector 1.157 Connector 1.157.67 3.3V 3.3V 3.3V *Running Communications Task **Running ADC Task *Running Communications Task **Running ADC Task *Running Communications Task **Running ADC Task PHASE_IN PHASE_IN PHASE_IN Sheet.77 NEUTRAL_IN NEUTRAL_IN NEUTRAL_IN Connector 1.157.79 Connector 1.157.80 AGND AGND AGND Current Sense (differential) Current Sense (differential) Current Sense (differential) Line Voltage Sense (differential) Line Voltage Sense (differential) Line Voltage Sense (differential) AC Power Source Alternating Current Sheet.93 Sheet.107 Sheet.103 Label Text 10pt.262.104 = = Socket Socket Socket Sheet.112 Sheet.113 Line In Line In Line In Sheet.115 Sheet.128 Sheet.124 Microcontroller Microcontroller MCU** MCU** AINOP AINOP AINOP AIN1N AIN1N AIN1N AIN1P AIN1P AIN1P AINON AINON AINON MCU MCU MCU* MCU* SCI SCI SCI Line Driver Line Driver Line Driver
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