Innovative Wireless Power Receiver for Inductive Coupling and Magnetic Resonance Applications
( Wireless Power Transfer - Fundamentals and Technologies )
Publication series ： Wireless Power Transfer - Fundamentals and Technologies
Author： Young-Jun Park Hongjin Kim Hyung-Gu Park and Kang-Yoon Lee
Publisher： IntechOpen
Publication year： 2016
E-ISBN: INT6148863341
P-ISBN(Paperback): 9789535124672
P-ISBN(Hardback): 9789535124689
Subject： TN4 microelectronics, integrated circuit (IC)
Keyword： 微电子学、集成电路（IC）
Language： ENG
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Innovative Wireless Power Receiver for Inductive Coupling and Magnetic Resonance Applications
Description
This chapter presents a wireless power receiver for inductive coupling and magnetic resonance applications. The active rectifier with shared delay-locked loop (DLL) is proposed to achieve the high efficiency for different operation frequencies. In the DC–DC converter, the phase-locked loop is adopted for the constant switching frequency in the process, voltage, and temperature variation to solve the efficiency reduction problem, which results in the heat problem. An automatic mode switching between pulse width modulation and pulse frequency modulation is also adopted for the high efficiency over the wide output power. This chip is implemented using 0.18 μm BCD technology with an active area of 5.0 mm × 3.5 mm. The maximum efficiency of the active rectifier is 92%, and the maximum efficiency of the DC–DC converter is 92% when the load current is 700 mA.
Chapter