Design of Low power
Wireless Multi-DC Converter and Transmitter
Abstract
In the existing paper presents a full active
rectifier consisting of GaN devices and a CMOS controller designed for wireless
power transmission in high-power consumer devices. An adaptive time delay
control circuit is developed to maximize the conduction interval of the GaN
switch, which can significantly reduce the power loss caused by the forward
voltage imposed by the diode. The Existing control algorithm also eliminates
the reverse leakage current of the rectifier, and thus further improves its
power transfer efficiency. The controller implemented based on a high voltage 0.18-μm
CMOS process and the power stage consisting of four GaN transistors are
assembled on the same printed circuit board (PCB) board. The proposed rectifier
provides a maximum output current of 3 A at 5 V, with a 6.78-MHz ac input
voltage. Its peak power transfer efficiency is 91.8%.
Existing System
The Existing control algorithm also eliminates the
reverse leakage current of the rectifier, and thus further improves its power transfer
efficiency. The controller implemented based on a high voltage 0.18-μm
CMOS process and the power stage consisting of four GaN transistors are
assembled on the same printed circuit board (PCB) board. The proposed rectifier
provides a maximum output current of 3 A at 5 V, with a 6.78-MHz ac input
voltage. Its peak power transfer efficiency is 91.8%.
Proposed System
In
the proposed system we are planning to vary the architecture in such a way it
will generate multiple DC voltages and transmit the same to various circuits
through wireless manner. The design consists of master control unit,
communication unit, low power control system. The architecture uses maximum of
low power logics such as power gating , clock gating etc. The outcome of the
design implies more accurate dc voltages at different levels
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