[原创] RohmBD57015GWL+ BD57020MWV 15W Qi无线充电参考设计

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I²C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(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BD57015GWL

BD57015GWL 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 output, 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 Voltages
Maximum Input Voltage
Maximum Input/Output Current
AC Input Frequency Range
5.0 to 12.0 V
20 V (Max)
1.5 A (Max)
100 to 480 kHz
Low Impedance FET rectifier
High efficiency fully synchronous rectifier
Maximum Input Voltage of 20V..

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