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Various applications in the modern world require DC supply. Some applications needs low DC voltage and some require considerably high DC voltage. We get AC supply and that needs to be converted to DC for these applications. In this paper AC - DC step up and step down converters without the use of bridge rectification is dealt. In step up converter, low AC voltage micro generators are used and 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...
A low-power, Asynchrobatic (asynchronous, quasi-adiabatic), sixteen-bit, radix-four, parallel-prefix adder circuit is presented. The results show that it is an efficient, low power design, and that as would be expected with an asynchronous design, its performance is determined by its operating conditions. On a 0.35 mum CMOS process, under ldquotypicalrdquo process conditions, operating at an effective...
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