原标题：大联大世平集团推出基于NXP产品的15W单线圈定频无线充电解决方案

　　2018年3月22日，致力于亚太地区市场的领先半导体元器件分销商---大联大控股宣布，其旗下世平推出基于恩智浦(NXP)MWCT1011VLH的15W单线圈定频无线充电解决方案。

　　随着苹果iPhone8及iPhone X发布后，无线充电市场出现井喷式增长。目前，整个无线充电市场已比苹果新机发布前增长了约5-6倍，2018年还会继续成长数倍。

　　无线充电目前主要技术方案包括电磁感应、磁共振、无线电波和电场耦合四种，其中电磁感应和磁共振是当前两大主流技术路线。WPC是目前最大的无线充电联盟，会员数量超过200家，其中有诺基亚、HTC、LG、Sony、三星、高通还有新加入的苹果。大联大世平推出的基于NXP MWCT1011VLH 15W单线圈定频无线充电解决方案支持最新的WPC-QI标准，适用于手机快速充电。

　　图示1-大联大世平推出基于NXP MWCT1011VLH的15W单线圈定频无线充电解决方案系统架构图

　　WCT101XDS

　　Features

　　• Compliant with the latest version Wireless Power Consortium (WPC) power class 0 specification power transmitter design

　　• Supports wide transmitter DC input voltage range of 5V to 24V

　　• Integrated digital demodulation

　　• Supports two-way communication, transmitter to receiver by FSK and receiver to transmitter by ASK

　　• Supports Q factor detection and calibrated power loss based Foreign Object Detection (FOD) framework

　　• Supports low standby power

　　• Uses rail voltage control, phase difference control or duty cycle control with the fixed operation frequency to alleviate EMI in the EMI sensitive system

　　• Supports operation frequency dithering technology to eliminate interference with specific frequency band electronic devices

　　• Supports CAN/IIC/SCI/SPI interfaces

　　• LED for system status indication

　　• Over-voltage/current/temperature protection

　　• Software based solution to provide maximum design freedom and product differentiation

　　Overview Description

　　The WCT101x is a wireless power transmitter controller that integrates all required functions for WPC “Qi” compliant wireless power transmitter design. It is an intelligent device that works with the NXP touch sensing technology or uses periodically analog PING to detect a mobile device for charging while gaining super low standby power. Once the mobile device is detected, the WCT101x controls the power transfer by adjusting the rail voltage, the phase difference, or the duty cycle of the power stage according to message packets sent by the mobile device.

　　To maximize the design freedom and product differentiation, the WCT101x supports the extended power profile industrial/consumer power transmitter design (WPC MP-Ax types, MP-Bx types or customization) using the fixed operation frequency control methods such as rail voltage control, phase difference control or duty cycle control etc. by software based solution, which can support wireless charging with both extended power profile power receiver and baseline power profile power receiver. In addition, the easy-to-use FreeMASTER GUI tool has configuration, calibration and debugging functions to provide the

　　user-friendly design experience and reduce time-to-market.

　　The WCT101x includes a digital demodulation module to reduce the external components, an FSK modulation module to support two-way communication, a protection module to handle the over-voltage/current/temperature protection, an FOD module to protect from overheating by misplaced metallic foreign objects, and general CAN/IIC/SCI/SPI interfaces for external communications. It also handles any abnormal condition and operational status and provides comprehensive indicator outputs for robust system design.

　　功能描述

　　15W单线圈定频无线充电发射端;

　　兼容WPC Qi中功率规范;

　　芯片上的数字解调;

　　向下兼容WPC低功率5W规范;

　　转换效率超过75%。

　　产品特性

　　支持品质因素和功率损耗FOD的校准;

　　超低物料清单(BOM)成本;

　　通过MWCT1011获得Qi v1.2.2认证。

　　图示2-大联大世平推出基于NXP MWCT1011VLH的15W单线圈定频无线充电解决方案照片