Cypress’ Powerline Communication (PLC) devices (CY8CPLC10, CY8CPLC20 and CY8CLED16P01) provide a secure and reliable solution that integrates a Powerline PHY modem and Powerline optimized network protocol with CSMA into single device. These devices work with an external Powerline coupling circuit and power supply, which may need to be designed to meet certain compliance standards and specifications. This application note describes the design of these circuits and provides an overview of the commonly encountered compliance specifications along with guidelines on selection of critical components necessary to meet these specifications.