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Today's power converter industry is apparently heavily influenced by the need to achieve two important goals: high efficiency and small weight and size. Switching frequency of the converter is a factor that moves the mentioned desired characteristics to opposite directions, improving one and deteriorating the other. A higher switching frequency allows us to use smaller components, but in return it...
A Wearable Power System (WPS) is a portable fuel-to-electrical energy converter that is carried on the body and is able to supply an average of 20 W for 4 days and has a total weight of less than 4 kg. Due to limited total weight of the system, each system part must have the highest efficiency to weight ratio. This paper presents the optimization of a synchronous buck DC-DC converter that is used...
This paper deals with the designing and control of soft switch multi-input DC-DC power converter to be used in embedded system, particularly in transport application. The converter has been simulated with an output power of 1.8 kW (voltage 400 V; current 4.5 A) and switching frequency of 50 kHz. The converters can be voltage or current controlled, depending on the type of source in the overall system,...
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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