Microchip QI无线充电LED手提灯参考设计
Microchip公司的 QI无线充电LED手提灯是Qi 1.1标准(最大5W功率)兼容的接收器,和任何Qi 1.1兼容的无线充电发送器相连接.采用通用的8位微处理器(PIC16F18325)进行通信和充电,为通用无线充电解决方案提供了灵活低成本替代方案.该设计方案是能无线充电的手持和灵活照明解决方案.从无线接收器线圈的输入电压为4.5V到28V,低压电源为+5V(采用MCP1804 LDO).微控制器固件所实现的为Qi 1.1 5W无线充电器通信协议.设计师采用2000 mAh锂电池(4.2V充电1A).3个LED串(9V时的驱动电流最大为200mA).设计采用同步降压转换器拓扑以得到高效率,双向降压或升压转换器,由PFM信号驱动,提供充电和放电模式;降压模式给电池充电,而升压模式从电池给LED串供电.四级LED调光水平为25%,50%,75%和100%.中电网为您整理如下详细资料,本文介绍了参考设计简化框图和QI无线充电LED手提灯参考设计主要特性,电路图,材料清单和PCB设计图.
The Microchip Qi Wireless Charging LED Lantern is a Qi 1.1 standard (5W maximum power) compatible receiver. It provides a flexible, low-cost alternative to the common wireless charging solutions by using a general purpose 8-bit microcontroller for communication and charging.The Microchip Qi Wireless Charging LED Lantern can be used in conjunction with any Qi 1.1 - compatible wireless charging transmitters. It has the added functionality of a fully featured Lithium-Ion charging controller and the high efficiency of a switching power supply.
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