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The KY boost converter, which combines the KY converter and the traditional synchronously rectified (SR) boost converter, is a novel step-up converter to overcome the disadvantages of the KY converter, which has a quite low voltage gain. Compared with the KY converter, the KY boost converter has one additional inductor and one additional capacitor. Therefore, the dynamic characterization of the KY...
In this paper, a novel high step-up converter is presented, containing a multi-winding coupled inductor and a charge pump capacitor. Since the charge pump capacitor is connected in series with a coupled inductor, the surge current caused by the capacitor charging can be reduced, thereby causing the life of the capacitor to be prolonged. Above all, the energy stored in the leakage inductance of the...
In this paper, a novel step-up converter is presented, whose operating principle is based on charge pumps and series boost converters. Furthermore, although three switches are used, no isolated gate driver is needed instead of one half-bridge gate driver and one low-side gate driver. Accordingly, the proposed converter is easy in analysis and simple in implementation. In addition, some experimental...
A simple step-up converter, based on charge pumps with one inductor inserted, is presented herein. The proposed converter has individual simple operating analyses—if this converter is operated in the continuous conduction mode (CCM), only two operating modes exist. Furthermore, the power switches used in the proposed converter is easy to drive—only two half-bridge gate drivers and one low-side gate...
In this paper, a negative resonant voltage divider (NRVD) is presented with the fixed switching frequency all over the load range. The proposed resonant voltage divider without any control loop embedded can achieve good efficiency from the light load to the rated load, especially for the light load. The detailed description of the NRVD is provided along with some experimental results to demonstrate...
A novel voltage-boosting converter, based on charge pumps with one inductor inserted, is presented herein. This converter has a simple operating analysis—if such a converter operates in the continuous conduction mode (CCM), only two operating modes exist. Furthermore, the power switches used in such a converter are easy to drive—only two half-bridge gate drivers and one low-side gate driver are needed...
In this paper, a dual-output boost converter with positive and negative output voltages under a single positive voltage source fed. Due to its dual output with positive and negative output voltages, this converter is very suitable for driving the half-bridge class-D amplifier, so as to remove a DC blocking capacitor required in the half-bridge class-D amplifier. Firstly, the basic operating principles...
This paper proposes a DC-DC converter using variable on-time and variable switching frequency (VONVF) control enhanced constant ripple current control and reduced magnetic components. The proposed converter is realized by making the turn-off time proportional to the on-time of the converter, according to the input and output voltage, thereby reducing the corresponding current ripple on output voltage...
A high step-up converter is proposed herein, which combines the coupling inductor and the charge pump. Under a low input voltage with a high input current, the proposed converter has high voltage conversion ratio, and possesses an active voltage clamping circuit which pumps a portion of the leakage inductance energy to the output. Hence, it is very suitable for the burn-in test of the buck-type converter...
In this paper, a two-stage boost converter is presented, which is the derivative three-level boost converter cascaded with the KY converter. Such a converter has continuous input and output inductor currents in the continuous conduction mode (CCM), different from the traditional boost converter. And hence, this converter is very suitable for low-ripple applications. The detailed illustration of the...
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