[原创] Rohm BD57020MWV Qi无线充电参考设计

Rohm公司的BD57020MW是无线电源发送器,包括了用于线圈驱动的逆变器,Qi兼容的通信控制器和解调电路,GPIO,TCXO缓冲器和I2C接口,支持Rohm BD57020MWV Qi无线充电(低功率和中功率),主要用于WPC兼容设备,PC和充电支架底座.本文介绍了BD57020MWV主要特性和指标,框图,典型应用电路图及材料清单与WPC Qi中功率充电参考设计电路图.

BD57020MWV is an integrated IC for the wireless powertransmitter. This device is composed of inverters for thecoil drive, controller for the communication of the Qicompliant and demodulating circuit, GPIO, TCXO buffer,and I2C interface.

BD57020MWV works as a controller in the wirelesspower transmitter based on the Qi compliant by using itwith a general-purpose microcomputer.

BD57020MWV is applied to Qi ver.1.2 (Low Power andMedium Power).

BD57020MWV主要特性:

WPC / Qi ver.1.2 (Low Power and Medium Power)support.
Half Bridge / Full Bridge inverter
Foreign object detection
GPIO 4CH
I2C bus interface
5.0mm x 5.0mm UQFN package 40 pin

BD57020MWV主要指标：

Input Power Supply Voltage Range: 4.2 V to 5.3 V
Input Adapter Voltage Range: 4.6 V to 20 V
Drive Frequency Range: 110kHz to 205kHz
Operating Temperature Range: -20℃ to +85℃

BD57020MWV应用:

WPC compliant devices
PC..

查看全文