【应用】最大输出功率为5W的无线充电芯片CH241用于TWS耳机，支持BPP、EPP等常见无线充电协议

时间： 2023-03-01 来源：世强

技术问答

沁恒的无线充电芯片CH241在TWS耳机上的应用，TWS耳机是True Wireless Stereo的缩写，翻译过来真无线立体声耳机，是目前最热门的蓝牙耳机种类。TWS真无线耳机市场体量正在紧追手机，或将位居消费电子第二，如今随着有线快充技术和无线快充技术的发展，手机的无线充电功能日益普及，TWS真无线耳机也正朝这个方向发展，TWS耳机开始大规模标配无线充电功能了。

耳机内部各功能区包括充电模块、按键模块和通话麦克风模块，通过充电线圈和无线充电芯片给耳机的锂电池进行充电。以下是无线充电部分的框图：

封装引脚：

无线充电芯片CH241在TWS耳机上的应用有以下优势：

1、 Qi标准，支持BPP、EPP等常见无线充电协议；

2、产品集成度高，外围精简，可以节约成本；

3、支持输出双反馈，保护DC-DC安全重载启动；

4、最大支持5W 输出功率。

综上所述，沁恒无线充电芯片CH241满足Qi标准，支持BPP、EPP等常见无线充电协议；产品集成度高，外围精简，用于TWS耳机可以节约成本，最大输出功率为5W。

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