Title :
A 3.0-W wireless power receiver circuit with 75-% overall efficiency
Author :
Young-jin Moon ; Yong-seong Roh ; Changsik Yoo ; Dong-Zo Kim
Author_Institution :
Dept. Electron. Eng., Hanyang Univ., Seoul, South Korea
Abstract :
Resonant magnetic coupling is utilized to transfer 3.0-W power without wire. The received AC power is rectified by an active rectifier and then converted to the desired DC level by a switching DC-DC converter. The reverse leakage of the active rectifier is prevented by a delay locked loop (DLL) based delay compensation circuit. The overall power efficiency of the wireless power receiver implemented in a 0.35-μm BCDMOS technology is 75-% when the resonant frequency of the magnetic resonator is 3.23-MHz.
Keywords :
CMOS integrated circuits; DC-DC power convertors; compensation; inductive power transmission; radio receivers; rectifying circuits; switching convertors; BCDMOS technology; DC level; DLL based delay compensation circuit; active rectifier; delay locked loop; efficiency 75 percent; frequency 3.23 MHz; magnetic resonator; power 3.0 W; received AC power; resonant magnetic coupling; reverse leakage; size 0.35 mum; switching DC-DC converter; wireless power receiver circuit;
Conference_Titel :
Solid State Circuits Conference (A-SSCC), 2012 IEEE Asian
Conference_Location :
Kobe
DOI :
10.1109/IPEC.2012.6522636
