原标题：IDT P9221-R 15W无线电源接收解决方案

　　IDT公司的P9221-R是高度集成WPC-1.2.2兼容的15W无线电源接收器,采用磁感器充电技术,接收器把谐振回路的交流(AC)电源转换成电压9V和12V的稳压DC输出.接收器包括一流的32位ARM® Cortex®-M0处理器,和发送器P9242-R一起可组成完整的无线电源系统(15W),DC对DC效率高达87%,支持I2C接口,主要用在快充手机,平板电脑,电源配件和医疗电子.本文介绍了P9221-R主要特性,功能框图,应用电路以及15W评估板P9221-R-EVK主要特性,电路图,材料清单和PCB设计图.

　　The P9221-R is a high efficiency, Qi-compliant wireless powerreceiver targeted for applications up to 15W. Using magneticinductive charging technology, the receiver converts an AC powersignal from a resonant tank into a regulated DC output voltagesetting with 9V and 12V. The integrated, low RDS (ON) synchronousrectifier and ultra-low dropout offer high efficiencymaking the product ideally suited for battery-operated applications.

　　The P9221-R includes an industry-leading 32 bit ARM® Cortex®-M0 processor offering a high level of programmability. In addition,the device features proprietary alignment guide information foroptimum coupling between the receiver and the transmitter, aprogrammable current limit, and a patented over-voltage protectionscheme eliminating the need for additional capacitorsgenerally used by the receivers, minimizing the external

　　component count and cost. Together with the P9242-R transmitter(TX), the P9221-R is a complete wireless power system solutionfor power applications up to 15W.

　　The P9221-R is available in a 52-WLCSP package and it is ratedfor a 0 to 85°C ambient operating temperature range.

　　P9221-R主要特性:

　　Single-chip solution supporting up to 15W applications

　　WPC-1.2.2 compliant

　　Patented over-voltage protection clamp eliminating externalcapacitors

　　87% peak DC-to-DC efficiency with P9242-R TX

　　Proprietary coil alignment guide

　　Full synchronous rectifier with low RDS(ON) switches

　　Programmable output voltage: 9V and 12V

　　Embedded 32-bit ARM® Cortex®-M0 processor

　　Dedicated remote temperature sensing

　　Power transfer LED indicator

　　Programmable current limit

　　Active-low enable pin for electrical on/off

　　Open-drain interrupt flag

　　Supports I2C interface

　　0 to +85°C ambient operating temperature range

　　52-WLCSP (2.64x3.94 mm; 0.4mm pitch)

　　P9221-R典型应用:

　　Fast charge cellphone

　　Tablets

　　Accessories

　　Medical

　　图1.P9221-R功能框图

　　图2.P9221-R应用电路

　　15W评估板P9221-R-EVK

　　The P9221-R-EVK is a turnkey 15 Watt, Qi-compliant wireless power receiver reference kit for fast prototyping and design integration. The kit consists of an easy-to-use reference board and comprehensive support collateral that significantly eases design-in effort and minimizes time-to-market.

　　An associated layout module enables direct instantiation on to a system board, while an optimized and fully-tested Bill-of-Materials (BOM) takes the guess-work out of component selection. The P9221-R based solution is well-suited for a wide range of applications, including Tablets, furniture, medical devices, and other portable devices still hindered by traditional contact-based charging bases or cables.

　　图.评估板P9221-R-EVK外型图

　　评估板P9221-R-EVK主要特性:

　　Supports up to 15W

　　WPC 1.2.2 (Qi) compliant for interoperability w/ other devices

　　Programmable output voltage - 9 or 12V

　　Patented over-voltage protection clamp eliminating external capacitors

　　Proprietary coil alignment guide

　　Embedded 32 bit ARM® Cortex®-M0 processor

　　Compact form factor for fast prototyping

　　Layout module provided for direct copy to system board

　　Optimized PCB reference layout and fully-tested BOM

　　High-quality receiver coil by Amotech

　　Supported by extensive library of digital support collateral (see below)

　　P9221-R MM评估板V2.1材料清单:

　　图.15W无线电源发送板和接收板外形图