TI 公司的bq25046 是5W(1.1A/5V)无接触充电应用的电源集成电路,适用于有线和无线电源应用,具有5V稳压输出和集成的3.3V/15mA LDO,输入电压额定值30V,15V过压保护阈值, 能给MSP430BQ1010 MCU直接供电,主要用在无线电源,智能手机,PDA,MP3播放器和低功率手持设备.本文介绍了bq25046主要特性,方框图,典型应用和无线电源系统方框图, 作无接触电源接收器的应用电路以及bqTESLA无线电源系评估套件HPA688EVM主要特性,电路图和材料清单(BOM).bq25046：1.1A, Single-Input 5-V Power Supply IC for ContactlessCharging ApplicationsThe bq25046 is a highly integrated linear power supply IC targetedat both wired and wireless power applications. With an accurate 5-Vregulated output and integrated 3.3-V LDO, the bq25046 is an idealsolution for wireless power supply solutions up to 5 W.The bq25046 integrates several functions which enable a wirelesscharging solution within a small area and low component count.These include a 3.3-V LDO which drives an MSP430BQ1010 wirelesscontroller, high-accuracy current sense for calculatingreceiver-side power usage, 100mA/400mA current limits enable robustcommunication at all load current levels, and integrated pass FETacts as load disconnect switch and 5-V regulator to protectdownstream circuitry.bq25046主要特性:30V Input Rating, with 15V Over-Voltage Protection (OVP)Threshold Integrated Charge Current Sense for Wireless Power Transfer Efficiency Monitoring 3.3V, 15mA integrated Low Dropout Linear Regulator (VDD3.3) Supplies Power to MSP430BQ1010 Directly 2% Output Voltage Regulation Pin Selectable 100mA and 400mA Current Limit Enables RobustCommunication in Wireless Power Systems at any Output Current Level Soft-Start Feature to Reduce Inrush Current Status Indication – Power Good (PG) and Output Enabled (CHG) Available in Small 2mm × 3mm DFN-10 Package bq25046应用: Wireless Power Applications Smart Phones PDAs MP3 Players Low-Power Handheld Devices图1.bq25046方框图图2.bq25046典型应用电路图3.bq25046用作无接触电源接收器的应用电路图4.无线电源系统方框图The bqTESLA™ wireless power evaluation kit from Texas Instrumentsis a high-performance, easy-to-use development kit for the designof wireless power solutions. Consisting of a single-channeltransmitter and direct-charge receiver and associated magnetics,the kit enables designers to speed the development of theirend-applications. The bq500110EVM evaluation module (EVM) providesall basic functions of WPC 1.0-compliant wireless charger pad. TheEVM is intended to be used with bq25046EVM or any other WPC1.0-compliant receiver.This transmitter EVM is a complete transmitter-side solution thatpowers a bqTESLA™ receiver. The bq500110EVM requires single 19-V at0.5 A power supply to operate and combines on the singleprinted-circuit board the transmitter electronics, input powersocket, LED indicators, and the transmitting coil. The open designallows easy access to key points of the electrical schematic. Theboard has installed connectors for optional JTAG and serialinterfaces that can be helpful to advanced users.图5. bqTESLA无线电源系评估套件外形图bqTESLA无线电源系评估套件主要特性:Single-Channel TransmitterFeaturing bq500110 5V Power Supply Receiver Featuring bq25046 and MSP430bq1010 Enables Designers to Speed Development of End Applications No Additional Software Development Required Allows for True Plug-and-Play Functionality Designed for Compatibility with Qi Standardbq500110EVM-688 性能指标:图6.HPA688EVM 电路图(1)图7.HPA688EVM 电路图(2)图8.HPA688EVM 电路图(3)bq500110EVM-688评估板材料清单:文章来源于：http://www.szczkjgs.com/news_show_145626.htm