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RT7205B是高度集成的可编程开关电源二次侧控制器,为高效率、高功率密度离线式AC-DC转换器设计提供必要的功能和保护特性。它借助集成化的MCU、通过D+/D-接口完成对各种私有协议 (如FCP、SCP和AFC) 的支持,同时支持USB-C型接口的CC1/CC2的操作。它内部集成的同步整流控制器可以优化效率表现,即使在3V至12V输出电压范围内也能以连续导通模式 (CCM) 和非连续导通模式 (DCM) 下安全运行。它含有两个各以可编程参考电压运作的运算放大器为电压环路和电流环路提供调节信号,以高精度实现可编程的定电压、定电流调节过程。
支持的协议►SCP、FCP、AFC和其他私有协议►USB-C型接口
集成度高►内嵌MCU,含16kB掩模ROM、8kB OTP-ROM和0.75kB SRAM►内建同步整流驱动器和控制器►内建电荷泵,支持3V至12V宽VDD电压范围►内建分流式调节器,供可编程恒压、恒流控制使用►可编程缆线补偿►BLD引脚可对输出电容进行快速放电►USBP引脚可直接驱动外部N-MOSFET阻断开关►待机模式下以节能模式运作
保护特性►自适应式过压保护►自适应式欠压保护►固件可编程过流保护►固件可编程过热保护
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