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1、InnoSwitch3Pro系列电源参考设计powerint公司的InnoSwitch3-Pro系列大大简化了全可编高效率电源的开发和制造，其通用的I2C接口能动态控制输出电压和电流以及许多可配置特性，非常适合于AC/DC电源应用如高效率USB PD 3.0+PPS/QC适配器，包括QuickCharge，AFC，FCP，SCP在内的多协议适配器，直接充电移动设备充电器，多种化学工具和通用电池充电器，以及可调CV和CC LED镇流器。本文介绍了InnoSwitch3-Pro系列产品亮点，框图，应用电路，以及采用InnoSwitchTM3-Pro INN3368C-H301和Weltrend W
2、T6635P的45W USB PD 3.0 3.3V-16V PPS电源的参考设计DER-702主要指标，主板和子板电路图，材料清单和PCB设计图。The InnoSwitch3-Pro series family of ICs dramatically simplifies thedevelopment and manufacturing of fully programmable， highly efficientpower supplies， particularly those in compact enclosures. The universalI2C interface enab
3、les dynamic control of output voltage and currentalong with many configurable features. Telemetry provides reportingof programmed features and fault modes.InnoSwitch3-Pro devices are ideal for AC/DC power supply applicationswhere fine （10 mV， 50 mA） output voltage and current adjustment arenecessary
4、. Typical implementations comprise a system microprocessoror dedicated microcontroller with an I2C port that is used to configure，control and supervise operation of the power sub-system. The uVCC pinprovides a bias supply for the microprocessor in stand-alone implementationssuch as USB PD adapters a
5、nd chargers.InnoSwitch3-Pro系列产品亮点：Digitally Controlled via I2C Interface Dynamic adjustment of power supply voltage and current Telemetry for power supply status and fault monitoring Comprehensive set of configurable protection featuresHighly Integrated， Compact Footprint Multi-mode Quasi-Resonant （
6、QR） / DCM / CCM flyback controller，650 V or 725 V MOSFET， secondary-side sensing and synchronousrectifier driver Optimized efficiency across line and load range Integrated FluxLink， HIPOT-isolated， feedback link Instantaneous transient response Drives low-cost N-channel MOSFET series load switch Int
7、egrated 3.6 V supply for external MCUEcoSmart Energy Efficient Less than 30 mW no-load including line sense and MCU Enables power supply designs that easily comply with all globalenergy efficiency regulations Low heat dissipationAdvanced Protection / Safety Features Input voltage monitoring with acc
8、urate brown-in/brown-out andovervoltage protection Output OV/UV fault detection with independently configuredresponses Secondary FET / diode short protection Open SR FET gate detection Hysteretic thermal shutdown Programmable watchdog timer for system faultsFull Safety and Regulatory Compliance Rein
9、forced insulation Isolation voltage 4000 VAC 100% production HIPOT compliance testing UL1577 and TUV （EN60950） safety approvedGreen Package Halogen free and RoHS compliantInnoSwitch3-Pro系列应用： High efficiency USB PD 3.0 + PPS/QC adapters Multiprotocol adapters including QuickCharge， AFC， FCP， SCP Dir
10、ect-charge mobile device chargers Multi-chemistry tool and general purpose battery chargers Adjustable CV and CC LED ballast图1.InnoSwitch3-Pro系列初级控制器框图图2.InnoSwitch3-Pro系列次级控制器框图图3.InnoSwitch3-Pro系列3V-8V，5A;8V-20V恒定功率40W可编电源图4.InnoSwitch3-Pro系列5V/3A，9V/3A;3V-11V PPS USB PD 3.0兼容适配器参考设计DER-702：采用Inno
11、SwitchTM3-Pro INN3368C-H301和Weltrend WT6635P的45W USB PD 3.0 3.3V-16V PPS电源This document is an engineering report describing a 5 V / 3 A， 9 V / 3 A， 15 V / 3 A， 20 V 2.25 A USB PD PPS power supply. This power supply uses InnoSwitch3-Pro INN3368C IC and Weltrend WT6635P USB PD controller. This design
12、shows the high power density and efficiency that is possible due to the high level of integration of the InnoSwitch3-Pro controller providing exceptional performance.参考设计DER-702主要特性： InnoSwitch3-Pro - digitally controllable CV/CC QR flyback switcher IC with integrated high-voltage MOSFET， synchronou
13、s rectification and FluxLinkTM feedback I2C interface enables low pin count USB PD controller （10 pin） Sophisticated telemetry and comprehensive protection features USB PD 3.0 with PPS highly optimized low pin count USB PD controller WT6635P All the benefits of secondary-side control with the simpli
14、city of primary-side regulation Insensitive to transformer variation Meets DOE6 and CoC V5 2016 efficiency requirement （1% efficiency margin） Micro stepping of voltages and CC thresholds in compliance with PPS protocol Output overvoltage and overcurrent protection 30 mW no-load input power Integrate
15、d thermal protection 20 mV voltage step / 50 mA current step in PPS mode图5.参考设计DER-702外形图图6.参考设计DER-702 PCB顶视图图7.参考设计DER-702 PCB底视图图8.参考设计DER-702 PCB子板图：左：前视;右：后视参考设计DER-702主要指标：图9.参考设计DER-702 PCB主板电路图图10.参考设计DER-702 PCB子板电路图图11.参考设计DER-702变压器电路图参考设计DER-702材料清单：图12.参考设计DER-702主板PCB设计图（顶层）图13.参考设计DER
16、-702主板PCB设计图（底层）图14.参考设计DER-702子板PCB设计图（顶层）图15.参考设计DER-702子板PCB设计图（底层）详情请见：ac-dc.powerint/design-support/product-documents/data-sheets/innoswitch3-pro-data-sheet/“https:/ac-dc.powerint/design-support/product-documents/data-sheets/innoswitch3-pro-data-sheet/innoswitch3-pro_family_datasheet.pdfder-702_45watt_usb_pd_3_and_pps_power_supply_using_innoswitch3-pro_and_weltrend_controller.rar