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[原创] IDT P9025AC 5W Qi兼容无线接收器解决方案

关键词:电源管理 无线电源 WPC-1.1.2 P9025AC 5W Qi

时间:2017-06-29 10:19:08       作者:IDT       来源:中电网

IDT公司的P9025AC是集成了整流器和LDO的5W Qi兼容无线接收器,具有先进的外部物体检测(FOD)特性.接收器包括高效率同步全桥整流器和5.3V/1A LDO输出级,能自动检测发送器的存在与否,以及初始化WPC AC调制通信协议.主要用在PC外设,电子齿轮,智能家电和以电池为能源的设备.本文介绍了P9025AC主要特性,框图和应用电路,以及评估板P9025AC-R-EVK无线电源5W接收器参考设计主要特性,电路图,材料清单和PCB元件布局图和设计图.

The P9025AC is an integrated single-chip, WPC-1.1.2compliant wireless power receiver with an advanced ForeignObject Detection (FOD) feature. This device operates with anAC power signal from a resonant tank and converts it into aregulated 5.3V output voltage. The receiver includes a highefficiency Synchronous Full Bridge Rectifier and 5.3V trackingLDO output stage. The P9025AC automatically detects thetransmitter’s presence and initiates WPC AC modulationcommunication protocols with optimal efficiency.

The device includes the control circuit required to modulatethe load to transmit WPC-compliant message packets to thebase station. It uses minimal external components to reduceoverall solution area and costs.

The P9025AC employs advanced programmable WPC FODtechniques to detect foreign metallic objects placed on thetransmitter base station derived from a transmitted andreceived power transfer algorithm.

P9025AC主要特性:

• Integrated Single Chip Receiver (Rx) Solution
• Integrated Full-Bridge Synchronous Rectifier
• Integrated 5.3V, 1A LDO Regulator Output
• WPC-1.1.2 compliant
• Advanced WPC v1.1.2 Foreign Object Detection (FOD)
• Programmable FOD setting via external resistor
• Closed-loop power transfer control between Tx and Rx
• Support I2C interface with access to:
• Rectifier voltage
• Output current
• Resonance frequency
• Open-Drain LED Indicator Output
• Over-Temperature/Voltage/Current Protection
• 0° to +85°C temperature range
• 5 x 5 mm 32-VFQFPN package

P9025AC应用:

• PC peripherals
• Rugged electronic gear
• Small appliances
• Battery-powered electronics

图1.P9025AC框图

图2.P9025AC典型应用电路图

评估板P9025AC-R-EVK无线电源5W接收器参考设计

The P9025AC-R-EVK is a turnkey 5 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. Foreign Object Detection (FOD) tuning is supported via selectable pre-programmed curve settings and technical documentation. The P9025AC-based solution is well-suited for a wide range of applications, including PC peripherals, furniture, medical devices, and other portable devices still hindered by traditional contact-based charging bases or cables. 

无线电源5W接收器参考设计主要特性:

5.3 V, 1 A output
WPC 1.1.2 (Qi) compliant for interoperability w/ other devices
Compact form factor for fast prototyping
Layout module provided for direct copy to system board
Optimized PCB reference layout and fully-tested BOM (check BOM)
Programmable FOD setting via external resistor simplifies tuning process
Integrated full-bridge synchronous rectifier and LDO for lowest BOM / mfg. cost and smallest PCB area
High-quality receiver coil by Wurth Elektronik (learn more)
Supported by extensive library of digital support collateral (see below)
See the P9025AC on SchemeIt™ online schematic drawing tool

评估板P9025AC-R-EVK包括:

• Fully-assembled P9025AC-R-EVK reference board
• Application notes, datasheets, manuals, guides, videos,
layout files, and other digital resources can be found at:
idt.com/P9025AC-R-EVK

图3.评估板P9025AC-R-EVK外形图

图4.评估板P9025AC-R-EVK电路图
评估板P9025AC-R-EVK材料清单:


图5.评估板P9025AC-R-EVK PCB元件分布图

图6.评估板P9025AC-R-EVK PCB设计图(顶层)

图7.评估板P9025AC-R-EVK PCB设计图(中层1)

图8.评估板P9025AC-R-EVK PCB设计图(中层2)

图9.评估板P9025AC-R-EVK PCB设计图(底层)
详情请见:
https://www.idt.com/products/power-management/wireless-power/wireless-power-receivers/p9025ac-r-evk-wireless-power-receiver-reference-solution
IDT_P9025AC-Datasheet_DST_2015091.pdf
IDT_P9025AC-R-EVK-Manual_MAR_20150923.pdf

 

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