Power Integrations InnoSwitch3-PD 100W USB PD 3.0电源参考设计DER-937

Power Integrations公司的InnoSwitch3-PD组合了高压功率开关,以及初级控制器和次级控制器,隔离反馈和USB-PD控制器在单个器件中,大大地简化了USB-PD电源开发和制造.器件架构采用闯新的电感耦合反馈方案,封装引线框架和键合引线提供安全可靠和低成本方法,直接精确检测次级IC到初级IC的输出电压和输出电流.InnoSwitch3-PD的初级控制器是准谐振(QR)反激控制器,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.初级控制器由频率抖动振荡器,磁耦合到次级控制器的接收器电路,限流控制器,PRIMARY BYPASS引脚的5V稳压器,轻负载工作时的音频噪音降低引擎,旁通过压检测电路,无损耗输入线路检测电路,限流选择电路,超温保护和前沿消隐电路组成.InnoSwitch3-PD次级控制器由磁耦合到初级接收器的发送器电路,用来控制电源参数和遥测功能的I2C接口和SECONDARY BYPASS引脚的4.4V稳压器,同步整流器FET驱动器,QR模式电路,振荡器和计时功能,以及集成的保护特性灯组成.器件具有增强绝缘特性,绝缘电压大于4000VAC,取得了UL1577 和TUV (EN60950 和EN62368)安全认证.主要用在智能手机平板电脑,笔记本电脑,数码相机和蓝牙附件的高效USB PD 3.0+PPS适配器,基于快充电协议的电源适配器,以及直接充电移动设备充电器.本文介绍了InnoSwitch3-PD产品亮点,应用电路,初级和次级控制器框图,应用电路以及100W USB PD 3.0电源参考设计DER-937主要指标,电路图,材料清单,以及PCB设计图,变压器电路图和架构图.

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 oper...