10 W恒压/恒流充电器轻松满足DOE-6及欧盟CoC第5版第2阶段电缆末端效率标准
用于高能效电源转换的高压集成电路业界的领导者Power Integrations公司今日发布全新的参考设计套件RDK-420，这款10 W恒压/恒流USB充电器基于PI公司革新性的InnoSwitch™-CH系列高集成度开关IC设计而成。InnoSwitch IC将初级侧开关与初级控制器、次级控制器和反馈电路同时集成到一个符合全球安全标准的表面贴装封装内。
InnoSwitch IC采用精确的次级侧调节(SSR)及高速数字FluxLink™技术，越过安全隔离层传递直接电压和电流测量值。这项新型反馈技术无需庞大的光耦器即可实现精确控制，同时还能避免初级侧调节(PSR)固有的性能缺陷，如精确度和效率有限以及相对于空载功耗瞬态响应较慢。其他优势包括：±3%恒压、±5%恒流调节;电缆压降补偿;可提高效率的内置同步整流;<10 mW的空载输入功率;以及对变压器制造公差的适应性。
Power Integrations产品营销总监Shyam Dujari表示：“这款参考设计展现了使用我们的InnoSwitch IC所能实现的高功率密度、高性能以及高效率。其出色的空载性能，是多家全球知名移动设备制造商在量产充电器时使用InnoSwitch IC的主要原因之一。”
RDK-420现在可从Power Integrations进行订购。同时还会提供一份完整的参考设计报告(RDR-420)，内容包括设计一款提供5 V/2 A输出的85 VAC – 264 VAC输入智能移动/USB充电器所需的电源规格、电路原理图、物料清单、变压器规格文件、印刷电路板布局以及性能数据，测量依据新的美国能源部(DOE-6)及欧盟行为准则(CoC)第5版第2阶段USB电缆末端效率标准。
Power Integrations (Nasdaq: POWI), the leader in high-voltage integrated circuits for energy-efficient power conversion, today announced RDK-420, a new reference design kit for a 10 W CV/CC USB charger based on the company’s revolutionary InnoSwitch™-CH family of highly integrated switcher ICs. InnoSwitch ICs combine the primary-side switch together with primary and secondary controllers and feedback circuits into a single, worldwide safety-rated, surface-mount package.
InnoSwitch ICs leverage accurate secondary-side regulation (SSR), using Power Integrations’ high-speed digital FluxLink™ technology to communicate direct voltage and current measurements across the safety isolation barrier. This new feedback technique permits precise control without the need for a bulky optocoupler, while avoiding the performance compromises inherent in primary-side regulation (PSR), such as limited accuracy and efficiency and poor transient response versus no-load consumption. Other benefits include: ±3% CV, ±5% CC regulation; cable voltage-drop compensation; built-in synchronous rectification driver for high efficiency; <10 mW no-load input power; and accommodation of transformer manufacturing tolerances.
Comments Shyam Dujari, director of product marketing at Power Integrations: “This reference design shows the high power density, high performance and high efficiency that can be achieved using our InnoSwitch ICs. The excellent no-load performance is one of the key reasons why several of the world’s leading mobile device makers are already in mass production of chargers using InnoSwitch ICs.”
RDK-420 can be purchased from Power Integrations. A complete reference design report (RDR-420) is also available containing the power supply specification, schematic, bill of materials, transformer documentation, printed circuit layout and performance data required to build a 85 VAC – 264 VAC input smart mobile / USB charger with 5 V, 2 A output, measured in accordance with new US Department of Energy standards (DOE-6) and European Union Code of Conduct (CoC) Version 5, Tier 2 at the end of a USB cable.
