Power IntegrationsInnoSwitch3-PD 100WUSB PD 3.0电源参考设计DER-937

Power Integrations公司的InnoSwitch3-PD器件组合了高压功率开关,模拟初级与次级控制器在单个器件中.其架构采用新颖感性耦合反馈方案,封装引线框和接合线提供安全可靠和低成本方法,精确地直接检测次级IC到初级IC的输出电压和输出电流.器件中的初级控制器是准谐振(QR)反激控制器,可工作在连续导通模式(CCM).控制器采用可变频率和可变电流控制方案.初级控制器包括频率抖动振荡器,PRIMARY BYPASS引脚5V稳压器,用于轻负载的可听噪音降低引擎,旁路过压检测电路,无损耗输入线路检测电路,电流限制选择电路,超温保护和前沿消隐电路.InnoSwitch3-PD次级控制器包括磁耦合到初级接收器的发送电路,用来控制电源参数和遥测功能的I2C接口,SECONDARY BYPASS引脚的4.4V稳压器,同步整流FET驱动器,QR模式电路,振荡器和计时功能,以及集成保护特性.器件是USB 供电3.0 + PPS提供者并支持QC4.和USB Type-C Rev. 1.3兼容.器件还集成软起动和过流保护的VCONN FET.无负载功耗低到14mW,增强绝缘电压大于4000VAC,满足UL1577 和 TUV (EN60950 与EN62368)规范.100% HIPOT兼容测试.主要用在高效USB PD 3.0+PPS适配器,基于快速充电协议的电源适配器和直接充电移动设备充电器.本文介绍了InnoSwitch™3-PD产品亮点,初级和次级控制器框图,应用电路和100W USB PD 3.0电源

参考设计DER-937主要特性,电路图,材料清单和PCB设计图,以及电感设计电子表格和变压器设计电子表格.

The InnoSwitch™3-PD dramatically simplifies the development andmanufacturing of USB-PD power supplies by integrating primary switchand controller, isolated feedback, secondary control and USB-PDcontroller into a single package.

The InnoSwitch3-PD combines a high-voltage power switch, alongwith both primary-side and secondary-side controllers in one device.

The architecture incorporates a novel inductive coupling feedbackscheme using the package lead frame and bond wires to provide asafe, reliable, and low-cost means to communicate accurate directsensing of the output voltage and output current on the secondary ICto the primary IC.

The primary controller on InnoSwitch3-PD is a quasi-resonant (QR)flyback controller that has the ability to operate...