Home Energy Management System with Power Line Communication

Power line communication (PLC) is a rapidly growing market. Utilizing Renesas’ third generation of market-leading powerline communication modem solutions, this winning combination illustrates how PLC can be used in an IoT application. In this design, the Renesas RL78/I1C MCU is utilized to measure the voltage/current/phase of the AC power line. That data is then transmitted over PLC via an RL78/G13 MCU to the CPX3 modem SoC and the ISL15110 PLC line driver. These devices are powered by the ISL85415 step-down regulator; a Renesas photocoupler is also utilized to detect zero-crossings and to protect the CPX3 from potential voltage spikes.

Key Features

  • Can be used for any PLC protocol standard, such as PRIME 1.3.6/1.4 and G3
  • Two-chip solution for PLC (CPX3 PLC modem combined with the ISL15110 line driver)
  • Low power design delivers high efficiency in a small space
  • RL78/I1C is designed specifically for the needs of the smart electricity meter market
  • PS2561F-1 photocoupler provides 5000Vrms isolation voltage and high-speed switching
System Block Diagram

Winning Combinations

Renesas’ complementary product portfolios of Analog + Power + Embedded Processing work together to deliver comprehensive solutions to our customers. Our product experts have developed "Winning Combinations," compelling product combinations that help our customers accelerate their designs and get to market faster.

See the benefits immediately with our “Winning Combinations” solutions