Maxim MAX77960B/61B3A/6A输出USB-C降压/升压充电器解决方案

Maxim公司的MAX77960B/MAX77961B是宽输入3A(MAX77960B)/6A(MAX77961B)降压/升压充电器,具有智能功率选择器和可作为反向降压转换器工作而不需要另外电感,允许IC到功率USB OTG附件.器件在小型解决方案尺寸中集成了低损耗功率开关,提供高效率,低热量和快速电池充电.反向降压转换器有真正的负载断开,并由可编输出电流限制来保护.器件是高度灵活的,通过I2C配置可编程或通过电阻配置自主控制.电池充电器包括智能功率选择器来适应电池尺寸和系统负载.等输入源可用时甚至电池深度放电(死电池)或丢失时智能功率选择器允许系统平滑地起动.为了电池安全性/身份验证理由,IC可配置继续充电禁止,允许DC/DC开关和调整SYS电压.采用I2C指令系统处理器稍后使能充电,或者IC能配置成自动开始充电.器件的输入电压为3.5V到25.4V,能经受30VDC,在9VIN/7.4VOUT/1.5AOUT时2节电池峰值效率为97%,在15VIN/12.6VOUT/2AOUT时3节电池的峰值效率为97%.器件的开关频率为600kHz 到 1.2MHz.主要用USB Type-C供电宽输入充电器,智能手机,平板电脑,2合1手持电脑,医疗设备,健康和健美监视器,数码相机,摄像机和动作摄像机,手持计算机和终端,手持无线电,电动工具,无人机,备份电池和无线扬声器.本文介绍了MAX77960B/MAX77961B主要优势和特性,框图,2节/3节电池插入保护图,I2C可编程充电器,以及评估板MAX77960B/MAX77961B EVK主要特性,框图,电路图,材料清单和PCB设计图.

The MAX77960B/MAX77961B are high-performance wide-input 3A (MAX77960B)/6A (MAX77961B) buck-boost chargers with Smart Power Selector™ and operate as a reverse buck converter without an additional inductor, allowing the ICs to power USB on-the-go (OTG) accessories. The devices integrate low-loss power switches and provide high efficiency, low heat, and fast battery charging in a small solution size. The reverse buck has true load disconnect and is protected by an adjustable output current limit. The devices are highly flexible and programmable through I2C configuration or autonomously through resistor configuration.

The battery charger includes the Smart Power Selector to accommodate a wide range of battery sizes and system loads. The Smart Power Selector allows the system to start up smoothly when an input sourc...