器件名称: bq51221
功能描述: 日前，德州仪器 (TI) 宣布推出业界最高效率的最小型无线电源接收器，其支持无线电源联盟 (WPC) 1.1 Qi 与电力事业联盟 (PMA) 标准，可改善移动充电体验。与现有接收器解决方案相比，最新 bq51221 无电感器 5 瓦接收器的高效率与可编程输出可将电源损耗锐降 50%，从而可帮助消费者通过 Qi 或 PMA 充电站更高效快捷地为其手机、耳机以及移动电源充电。
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bq51221
SLUSBS9 – FEBRUARY 2014
bq51221 Dual Mode 5-W (WPC and PMA) Single Chip Wireless Power Receiver
1 Features
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3 Description
The bq51221 device is a fully contained wireless power receiver capable of operating in both the WPC and PMA protocols which allows a wireless power system to work with both WPC and PMA inductive charging standards. The bq51221 device provides a single device power conversion (rectification and regulation) as well as the digital control and communication for both standards. It also has autonomous detection of protocol and requires no additional active devices. The bq51221 device complies with the WPC v1.1 and PMA communication protocol. Together with the WPC or a PMA primaryside controller, the bq51221 device enables a complete wireless power transfer system for a wireless power supply solution. The receiver allows for synchronous rectification, regulation and control and communication to all exist in a market leading form factor, efficiency, and solution size. Device Information
ORDER NUMBER bq51221YFPR PACKAGE YFP (42) BODY SIZE 3.6 × 2.9 mm2
Robust 5-W Solution With 50% Lower Losses for Improved Thermals – Inductorless Receiver for Lowest Height Profile Solution – Adjustable Output Voltage (4.5V to 8 V) for Coil and Thermal Optimization – Fully Synchronous Rectifier With 96% Efficiency – 97% Efficient Post Regulator – 79% System Efficiency at 5 W W……
