原标题：PowerIntInnoSwitch 3-CP系列30W USB充电器参考设计DER-631

　　PowerInt公司的InnoSwitch™3-CP系列集成了650V/725V MOSFET的离线CV/CC QR反激开关IC,在单片IC内集成了初级和次级控制器以及安全标准的反馈,具有多种保护如线路过压和欠压保护,输出过压和过流限制,超温关断等,大大简化了反激电源转换器的设计和制造.本文介绍了InnoSwitch™3-CP系列产品亮点,框图,典型应用电路,以及30W USB 墙上电源插座充电器电源参考设计DER-631主要特性和指标,电路图,材料清单和PCB设计图.

　　The InnoSwitch™3-CP family of ICs dramatically simplifies the designand manufacture of flyback power converters, particularly thoserequiring high efficiency and/or compact size. The InnoSwitch3-CPfamily incorporates primary and secondary controllers and safety-ratedfeedback into a single IC.

　　InnoSwitch3-CP family devices incorporate multiple protection featuresincluding line over and under-voltage protection, output over-voltageand over-current limiting, and over-temperature shutdown. Devices areavailable that support the common combinations of latching andauto-restart behaviors required by applications such as quick chargeand USB PD designs. The devices are available with and withoutcable-drop compensation.

　　InnoSwitch™3-CP系列产品亮点:

　　Highly Integrated, Compact Footprint

　　• Up to 94% efficiency across full load range

　　• Quasi-Resonant (QR) / CCM flyback controller, 650 V or 725 V MOSFET4,

　　secondary-side sensing and synchronous rectification driver

　　• Integrated FluxLink™, HIPOT-isolated, feedback link

　　• Easily interfaces to load-directed and fast charge protocol ICs

　　• Constant Power (CP) Profile minimizes charging time with continuousadjustment of output current and voltage

　　• Accurate CV/CC/CP, independent of external components

　　• External IS resistor allows custom CC programming

　　• Instantaneous transient response with 0%-100%-0% load step

　　EcoSmart™ – Energy Efficient

　　• Less than 15 mW no-load including line sense

　　• Easily meets all global energy efficiency regulations

　　• Low heat dissipation

　　Advanced Protection / Safety Features

　　• Secondary MOSFET or diode short-circuit protection

　　• Open SR FET-gate detection

　　• Fast input line UV/OV protection

　　Optional Features

　　• Cable-drop compensation with multiple settings

　　• Variable output voltage, constant current profiles

　　• Auto-restart or latching fault response for output OVP/UVP

　　• Multiple output UV fault thresholds

　　• Latching or hysteretic primary over-temperature protection

　　Full Safety and Regulatory Compliance

　　• Reinforced isolation

　　• Isolation voltage >4000 VAC

　　• 100% production HIPOT testing

　　• UL1577 and TUV (EN60950) safety approved

　　• Excellent noise immunity enables designs that achieve class “A”performance for EN61000-4; EN61000-4-2, 4-3 (30 V/m), 4-4, 4-5,4-6, 4-8 (100 A/m) and 4-9 (1000 A/m) and Ford FMC1278 (RI-115)

　　Green Package

　　• Halogen free and RoHS compliant

　　InnoSwitch™3-CP系列应用:

　　• High efficiency flyback designs up to 65 W

　　• USB PD / QC / proprietary protocol chargers

　　30W USB墙上电源插座充电器参考设计DER631

　　This engineering report describes an output power supply intended for USB wall outlet charger. The 30 W output (selectable 5.1 V / 6 A or 9.2 V / 3.3 A or 15.3 V / 2 A) rail is designed for a high power USB charging with Type-A or Type-C ports. The output utilizes INN3268C from the InnoSwitch3-CP family of ICs. This design shows high power density and efficiency that is possible due to the high level of integration of the InnoSwitch3-CP controller providing exceptional performance.

　　DER-631 is a low-line input flyback converter design. The key design goals were high power density, high efficiency, low no load consumption, and best in class thermal performance. This is intended for wall outlet USB chargers.This document contains the power supply specification, schematic diagram, bill of materials, printed circuit layout, and performance data.

　　充电器参考设计DER631主要特性:

　　30 W compact power supply for high power USB Type-A/C port charging

　　>90% average efficiency at nominal AC input

　　<30 mW no-load input power

　　All the benefits of secondary side control with the simplicity of primary side regulation

　　Insensitive to transformer variation

　　Extremely fast transient response independent of load timing

　　Synchronous rectification for higher efficiency

　　Accurate thermal protection with hysteretic shutdown

　　Input voltage monitor with accurate brown-in/brown-out and overvoltage protection

　　Meets IEC 2.0 kV common mode surge, 1.0 kV differential surge and EN55022 conducted EMI

　　图.充电器参考设计DER631外形图(正面)

　　图.充电器参考设计DER631外形图(背面)

　　充电器参考设计DER631主要指标:

　　充电器参考设计DER631材料清单:

　　详情请见:

innoswitch3-cp_family_datasheet.pdf

der631.pdf