TIbq5101x無線電源傳輸接收解決方案

TI 公司的bq5101x是用于手提設備的無線電源傳輸的接收器,提供AC/DC電源轉換,同時集成了和Qi v1.0通信協議兼容的數字控制,和bq500210發送器控制器一起,能組成完整的無接觸電源傳輸系統,AC/DC的效率93%,最大輸入電壓20V,主要用于WPC兼容的接收器,手機和智能手機,數碼相機,手持媒體播放器和手持設備.本文介紹了bq5101x主要特性,簡化框圖,無線電源(WPC或Qi)的電感電源系統框圖,應用電路以及bq51013AEVM-764無線電源接收器評估板主要特性和性能指標,電路圖,材料清單和PCB元件布局圖.

The bq5101x is an advanced, integrated, receiver IC for wireless power transfer in portable applications. The device provides the AC/DC power conversion while integrating the digital control required to comply with the Qi v1.0 communication protocol. Together with the bq500210 transmitter controller, the bq5101x enables a complete contact-less power transfer system for a wireless power supply solution. By using near-field inductive power transfer, the receiver coil embedded in the portable device receives the power transmitted by the transmitter coil via mutually coupled inductors. The AC signal from the receiver coil is then rectified and regulated to be used as a power supply for down-system electronics. Global feedback is established from the secondary to the transmitter in order to stabilize the power transfer process via back-scatter modulation.

bq5101x主要特性:

Integrated Wireless Power Receiver Solution with a 5V Regulated Supply

93% Overall Peak AC-DC Efficiency

Full Synchronous Rectifier

WPC v1.0 Compliant Communication Control

Output Voltage Conditioning

Only IC Required Between RX coil and 5V DC Output Voltage

Dynamic Rectifier Controlfor Improved Load Transient Response

Dynamic Efficiency Scalingfor Optimized Performance Over any

Range of Output Power

Adaptive Communication Limitfor Robust Communication During

High Levels of Load Current Noise

Supports 20-V Maximum Input

Low-power Dissipative Rectifier Overvoltage Clamp (VOVP = 15V)

Thermal Shutdown

Multifunction NTC and Control Pin for Temperature Monitoring,

Done Charging and Fault Host Control

Stand-alone Digital Controller

Programmable Termination Pin for Charge Status 100% (CS100) Support

1.9 x 3mm DSBG or 4.5 x 3.5mm QFN Package

bq5101x 應用:

WPC Compliant Receivers

Cell Phones, Smart Phones

Headsets

Digital Cameras

Portable Media Players

Hand-held Devices

圖1.無線電源(WPC或Qi)的電感電源系統框圖

圖2.bq5101x簡化框圖

圖3.bq5101x用作無線電源接收器和給系統負載供電的電路圖

圖4.帶適配器電源通路復接器的bq5101x用作無線電源接收器和給系統負載供電的電路圖

bq51013AEVM-764無線電源接收器評估板

The bq51013AEVM-764 wireless power receiver evaluation kit from Texas Instruments is a highperformance, easy-to-use development kit for the design of wireless power solutions. Consisting of a 5-V power supply receiver and associated magnetics, the kit enables designers to speed the development of their end-applications.

bq51013AEVM-764無線電源接收器評估板應用:

The bq51013AEVM-764 evaluation module (EVM) demonstrates the receiver portion of the bqTESLA? wireless power system. This receiver EVM is a complete receiver-side solution that produces 5 V out at up to 1 A when coupled with the bqTESLA? transmitter. The bq51013AEVM-764 device shown on this EVM along with external components that support the device for a complete solution.

? The bqTESLA? receiver can be used in any number of low-power battery portable devices as a power source for charging. With contact-free charging capability, no connections to the device are needed.

? Output voltage of 5 V up to 1 A

? External adapter switchover and control circuit

? Low-profile, external pick-up coil

? Frame is configured to provide correct receiver to transmitter spacing.

? Room above coil for testing with battery, key for tuning

? Adjustable resistor R16 can be used to set max output current bq51013AEVM-764

bq51013AEVM-764無線電源接收器評估板電性能指標:




圖5.無線電源接收器評估板的建立

圖6.HPA764AEVM電路圖
HPA764AEVM材料清單:


圖7.bq51013AEVM-764無線電源接收器評估板元件布局圖:頂層
詳情請見:
http://www.ti.com/lit/ds/symlink/bq51013a.pdf
和
http://www.ti.com/lit/ug/sluu910/sluu910.pdf