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1、Rohm BD57020MWV Qi无线充电参考设计方案详解rohm公司的BD57015GWL是单独可用的无线功率接收器,集成了有低阻抗FET的全同步整流电路,Qi兼容和PMA兼容包控制器,可调整稳压电压输出,以及和功率发送器通信的漏极开路输出;而BD57020MWV是无线功率发送器,包括用于线圈驱动的逆变器,和Qi兼容和解调电路通信的控制器,以及GPIO,TCXO缓冲器和IC接口。无线充电发送器和接收器主要用在需要无线充电的移动应用。本文介绍了无线功率接收器BD57015GWL主要特性,框图和应用电路,无线功率发送器BD57020MWV主要特性和指标,框图,应用电路以及15W无线充电Qi发送
2、(BD57020MWV-EVK-002)和接收(BD57015GWL-EVK-002)参考设计主要特性和指标与电路图。1)无线功率接收器BD57015GWLBD57015GWL is a stand-alone wireless power receiver IC. The device integrates a fully synchronous rectifier circuit with low-impedance FETs, Qi compliant and PMA compliant packet controller, adjustable regulated voltage ou
3、tput, and an open-drain output terminal to communicate with the power transmitter using amplitude modulation. BD57015GWL is targeted at mobile applications implementing wireless charging compliant to Qi Medium Power standard and the PMA standard.BD57015GWL主要特性:7 Programmable Output VoltagesMaximum I
4、nput VoltageMaximum Input/Output CurrentAC Input Frequency Range5.0 to 12.0 V20 V (Max)1.5 A (Max)100 to 480 kHzLow Impedance FET rectifierHigh efficiency fully synchronous rectifierMaximum Input Voltage of 20VSupports Qi standard ver1.2, PMA standard SR1Automatic Detection of Qi / PMA, or selection
5、 byexternal pinOpen-Drain output terminal for modulationTX-RX coil Position Gap alarmBD57015GWL应用:Qi and/or PMA Compliant DevicesSmart PhonesCell PhonesHand-held Mobile DevicesHand-held Mobile Devices15W Qi接收器BD57015GWL-EVK-002图11.15W Qi接收器BD57015GWL-EVK-002外形图15W Qi接收器BD57015GWL-EVK-002主要指标:Vout :9/10/12V (on the MP-Tx):5V (on the LP-Tx)Imax :1.75A(5/9V)/1.6A(10V)/1.4A(12V)WPC Qi compliant (Ver. 1.2.2)图12.15W Qi接收器BD57015GWL-EVK-002电路图