原标题：Maxim MAX20340双向DC动力线通信(PLC)管理方案

　　Maxim公司的MAX20340是通用双向DC动力线通信(PLC)管理集成电路,最大比特速率166.7kbps,自动模式的数据吞吐量为5.7kbps,最大充电电流1.2A.具有灵活配置,单电阻编程,PLC主或从,双或单从模式(主),PLC从寻址(从),I2C寻址,小型解决方案尺寸, 1.358mm x 1.358mm WLP封装,主要是用在真正无线耳塞,有线无线耳机,助听器,可穿戴电子,游戏控制台,手持无线电, 销售点(POS)设备.本文介绍了MAX20340主要特性和优势,功能框图,耳塞充电框图,以及评估板MAX20340 EVK主要特性,电路图,材料清单和PCB设计图.

　　The MAX20340 is a universal bidirectional DC powerline communication (PLC) management IC with a 166.7kbps maximum bit rate. The device is capable of a maximum of 1.2A charge current. The MAX20340 features a slave detection circuit that flags an interrupt to the system when the PLC master detects the presence of a PLC slave on the powerline. This function allows the system to remain in a low-power state until a slave device is connected. Many of the features of the MAX20340, such as master/slave mode, I2C address, dual/single PLC slave mode, and PLC slave address, are pin configurable.The device is available in a 9-bump, 0.4mm pitch, 1.358mm x 1.358mm wafer-level package (WLP).

　　MAX20340主要特性和优势:

　　•Compact, Simple Solution for PLC

　　•Up to 166.7kbps Bit Rate

　　-5.7kbps Data Throughput in AutomaticMode

　　•1.2A Charge Current

　　•Automatic Detection of PLC SlavePresence

　　•Flexible Configuration

　　•Single Resistor to Program

　　•PLC Master or Slave

　　•Dual or Single Slave Mode (Master Only)

　　•PLC Slave Address (Slave Only)

　　•I2C Address

　　•Small Solution Size

　　•Space-Saving 0.4mm Pitch, 9-Bump, 1.358mm x 1.358mm WLP

　　MAX20340应用:

　　Truly Wireless Earbuds

　　Tethered Wireless Headphones

　　Hearing Aids

　　Wearables

　　Game Controllers

　　Handheld Radios

　　Point of Sales Devices

　　图1. MAX20340功能框图

　　图2. MAX20340耳塞充电框图

　　评估板MAX20340 EVK

　　The MAX20340 evaluation kit (EV kit) is a fully assembled and tested PCB that evaluates the MAX20340 bidi­rectional powerline communication (PLC) management integrated circuit. The EV kit obtains power from the MAX32625PICO microcontroller that contains the firm­ware necessary to use the EV kit GUI program. The EV kit features a master/slave mode PLC with flexible configura­tions. The EV kit ships with jumpers installed and supply voltages set to typical operating values.

　　评估板MAX20340 EVK主要特性:

　　USB-Powered Operation

　　Compact and Simple Solution for PLC

　　Flexible Configuration

　　On-Board Regulator and Battery-Charging Circuitry

　　Windows® 7/8/10-Compatible GUI Software

　　Fully Assembled and Tested

　　评估板MAX20340 EVK包括:

　　MAX20340 EV Kit

　　Two USB A to micro-USB Cables

　　图3.评估板MAX20340 EVK电路图(1)

　　图4.评估板MAX20340 EVK电路图(2)

　　评估板MAX20340 EVK材料清单: