Analysis and Implementation of a High Voltage Gain 1 MHz Bidirectional DC–DC Converter

Design of a High Efficiency High Step-Up/Step-Down Bidirectional Isolated DC–DC Converter

“…Hard switching of the converter limits the switching fre quency, and the inclusion of a coupled inductor complicates the design. In [22], gallium nitride (GAN) switches are applied to the same topology, which is operated at 1 MHz, to greatly reduce circuit size and increase energy conversion efficiency. However, such cir cuits are expensive; moreover, the high-frequency switching results in an excessively high Conventional non-isolated converters include boost converters, buck converters, and single-ended primary-inductor converters.…”

An Investigation of Zero-Voltage-Switching Condition in a High-Voltage-Gain Bidirectional DC–DC Converter

“…Thus, the choice of components, their losses, and the cost are carefully considered. In order to overcome these limitations, several kinds of step-down DC-DC converters have been recently proposed [12][13][14], which have brought about many remarkable advantages. For instance, double voltage gain can be achieved in comparison to the conventional buck converter, and the voltage stress on the switches is only equal to half of the input voltage.…”

“…For instance, double voltage gain can be achieved in comparison to the conventional buck converter, and the voltage stress on the switches is only equal to half of the input voltage. The proposed converter in [14] represents a potential candidate due to simple structure and low component count, as indicated in Figure 2. In particular, its voltage gain can be adjusted with additional phases, which is the dominant characteristic in comparison to other topologies.…”

“…In particular, its voltage gain can be adjusted with additional phases, which is the dominant characteristic in comparison to other topologies. The continuous conduction mode (CCM) and triangular conduction mode (TCM) operations with the fixed switching frequency of this topology were presented in [14]; however, these operations suffer from some tradeoffs. When the converter operates in CCM, a high inductance is required, and a large size of the magnetic component is needed [15].…”

“…Normally, the energy transfer from the inductor to the output capacitances (C ) of the switches can be used to explain the mechanism of ZVS, and the reverse inductor current should be enough for this mechanism [7]. However, conventional MOSFETs have high parasitic In order to overcome these limitations, several kinds of step-down DC-DC converters have been recently proposed [12][13][14], which have brought about many remarkable advantages. For instance, double voltage gain can be achieved in comparison to the conventional buck converter, and the voltage stress on the switches is only equal to half of the input voltage.…”