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The increasing demand for higher power density and lower cost in high voltage power supplies has driven semiconductor manufacturers to expand IGBT performance for high switching frequency beyond 100 kHz. An ultra thin punch-through IGBT with a blocking voltage of 650V has been developed and optimized targeting DC-DC conversion up to 200 kHz. Its high Tjmax of 175°C further enhances the converter compactness...
The effect of varying the driving strength of the gate driver IC on the efficiency of synchronous buck converters is the focus of this work. To reduce the switching losses in the output stage, gate drivers are often designed to charge and discharge the gate electrodes of the power MOSFETs as fast as possible. However, fast switching requires power hungry gate drivers and the gate driver power consumption...
This paper presents zero-voltage switching (ZVS) dual inductor-fed DC-DC converter integrating a conventional dual inductor-fed boost converter (DIFBC) and a parallel bidirectional boost converter. Most of current-fed type boost topologies including dual inductor schemes have crucial defects such as a high voltage spike on the switches when it comes to turning off, an unattainable soft start-up due...
This paper proposes a zero-voltage transition (ZVT) PWM synchronous buck converter, which is designed to operate at low output voltage and high efficiency typically required for portable systems. To make the DC-DC converter efficient at lower voltage, synchronous converter is an obvious choice because of lower conduction loss in the diode. The high-side MOSFET is dominated by the switching losses...
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