原标题：PowerInt InnoSwitch-CH USB 10W充电器参考设计

　　PowerInt公司的InnoSwitch-CH系列产品具有高度集成和紧凑封装,EcoSmart能效,先进保护和安全特性,无负载的功耗小于10mW,大大简化低压大电流电源的开发和制造,主要用于智能手机充电器.本文介绍了InnoSwitch-CH系列产品亮点,框图,典型应用电路,以及RDR-420 - 10 W CV/CC USB充电器主要指标,电路图,材料清单和PCB元件布局图.

　　The InnoSwitch™-CH family of ICs dramatically simplifies the development and manufacturing of low-voltage, high current power supplies, particularly those in compact enclosures or with high efficiency require­ments. The InnoSwitch-CH architecture is revolutionary in that the devices incorporate both primary and secondary controllers, with sense elements and a safety-rated feedback mechanism into a single IC.

　　Close component proximity and innovative use of the integrated communication link permit accurate control of a secondary-side synchronous rectification MOSFET and optimization of primary-side switching to maintain high efficiency across the entire load range. Additionally, the minimal DC bias requirements of the link, enables the system to achieve less than 10 mW no-load in challenging applications such as smart-mobile device chargers.

　　InnoSwitch-CH系列产品亮点:

　　Highly Integrated, Compact Footprint

　　Incorporates flyback controller, 650 V MOSFET, secondary-side sensing and synchronous rectification

　　Integrated, HIPOT-isolated, feedback link

　　Exceptional CV/CC accuracy, independent of transformer design or external components

　　Instantaneous transient response ±5% CV with 0%-100%-0% load step

　　EcoSmart™– Energy Efficient

　　<10 mW no-load at 230 VAC

　　Easily meets all global energy efficiency regulations

　　Low heat dissipation

　　Advanced Protection / Safety Features

　　Primary sensed output OVP

　　Secondary sensed output overshoot clamp

　　Secondary sensed output OCP to zero output voltage

　　Hysteretic thermal shutdown

　　Full Safety and Regulatory Compliance

　　100% production HIPOT compliance testing at 6 kV DC/1 sec

　　Reinforced insulation

　　Isolation voltage >3,500 VAC

　　UL1577 and TUV (EN60950) safety approved

　　EN61000-4-8 (100 A/m) and EN61000-4-9 (1000 A/m) compliant

　　Green Package

　　Halogen free and RoHS compliant

　　InnoSwitch-CH系列应用:

　　Chargers and adapters for smart mobile devices

　　High efficiency, low voltage, high current power supplies

　　图1. InnoSwitch-CH系列初级边控制器框图

　　图 InnoSwitch-CH系列5V/2A通用输入充电器电路图

　　RDR-420 - 10 W CV/CC USB充电器

　　RDR-420 - 10 W CV/CC USB充电器指标:

　　图. RDR-420 - 10 W CV/CC USB充电器外形图(顶层)

　　图. RDR-420 - 10 W CV/CC USB充电器外形图(底层)

　　图6. RDR-420 - 10 W CV/CC USB充电器电路图

　　图7. RDR-420 - 10 W CV/CC USB充电器变压器电路图

　　RDR-420 - 10 W CV/CC USB充电器材料清单(B)M):