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With the increase of switching frequency, dissipation of switching device became one of the most important factors which constrained the efficiency of DC-DC converter. A phase-shifted full-bridge circuit which based on the phase-shifted quasi-resonant converter was introduced in this paper. We developed a switching power supply prototype for 1000W. Some specific circuits, waveforms from the saber...
Half bridge magnetizing inductor (LmC) resonant dc/dc converter reduces the high current ripple of the output capacitor in LLC resonant converter maintaining narrow switching frequency and soft switching. This paper presents analysis and design of the half bridge LmC resonant converter. Using the extended describing function (EDF), the steady state analysis is carried out. Based on the results, the...
To benefit the parallel current balancing, a novel digital control strategy, i.e., the current following control, is put forward. A current following control based Buck DC-DC converter-group is described. The main controller collect the output voltage and the output current in the real time, based on which, the desired output current for each Buck DC-DC converter is worked out and transferred to the...
An on-chip buck converter with 3D chip stacking is proposed and the operation is experimentally verified. The manufactured converter achieves a maximum power efficiency of 62% for an output current of 70mA with a switching frequency of 200MHz and a 2x2mm on-chip LC output filter in 0.35mum CMOS. The use of glass epoxy interposer to increase the maximum power efficiency up to 71.3%, and the power efficiency...
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