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Resonant Regulating Recti fiers (3R) Operating for 6.78 MHz Resonant Wireless Power Transfer (RWPT) Jun-Han Choi, Student Member , IEEE, Sung-Ku Y eo, Seho Park
设计了一种用于6.78MHz谐振无线功率传输的高效接收电路3R，峰值效率达86%。
0.35µm BCD, 6W输出功率, 86%峰值效率
谐振调节整流器无线功率传输开关模式连续导通模式断续导通模式
▸创新点1：无需额外电感的开关模式调节（方法创新）。通过利用谐振线圈的固有电感特性，省去了传统设计中必需的额外电感元件，简化了电路结构并降低了成本，同时实现了86%的峰值效率。
▸创新点2：采用CCM和DCM模式以适应不同输出功率（系统创新）。通过动态切换连续导通模式(CCM)和断续导通模式(DCM)，优化了0W至6W功率范围内的能量转换效率，并显著降低了晶体管的电压应力。
▸创新点3：降低晶体管电压应力（电路创新）。通过创新的模式切换机制和谐振调节设计，有效减少了功率晶体管承受的电压峰值，提高了系统的可靠性和寿命。
▸创新点4：集成化小型化设计（工艺创新）。采用0.35µm BCD工艺实现，芯片面积仅为2.35x2.35 mm²，在保证高性能的同时显著提升了空间利用率，适合便携式设备应用。
Abstract
The design of a Resonant Regulating Recti fier (3R) capable of switching-mode operation is presented. The pro- posed 3R is a highly ef ficient receiver circuit intended for use in Re sonant Wireless Power Transfer (RWPT) application with a 6.78 MHz resonant frequency. Owing to the inductance of resonant coils, the 3R does not require any additional inductor for the switching-mode regulation. The transmitted power via the RWPT with the 3R ranges from 0 W to 6 W, and its peak ef fi- ciency reaches 86%. It employs th e Continuous Conduction Mode (CCM) and Discontinuous Condu ction Mode (DCM) for different output power levels. This helps to increase the output power and to lower the voltage stress on the transistor. Fabricated in 0.35 µm BCD technology, the 3R circuit occupies an area of 2.35x2.35 mm². The functionality of the 3R is succ essfully demonstrated using a transmitter circuit with resonant coils.