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This paper describes a power loss analysis of a proposed tapped-inductor buck converter which suitable for home DC power supply system. A laboratory prototype of a coin size (34mm × 26mm × 5mm) with DC 48V input to 1.2V/30A output was built and tested to verify the accuracy of the loss analysis. As a result, about 90% efficiency under middle and heavy load region can be achieved at 500kHz switching...
This paper discusses suitability of a novel tapped-inductor converter for home DC power supply system. Advantages such as high efficiency, compact size, low cost and high reliability are achieved by the characteristics like the buck converter. A laboratory prototype of a coin size (34mm × 26mm × 5mm), which can convert the voltage from 48V input to 1.2V/30A output, was tested. As a result, maximum...
In order to reduce power consumption of electronic equipment in stand-by mode, idle-mode and sleep-mode, a simple efficiency improvement technique for switching regulator in light load region is proposed. During the light load, small switching elements in a MOSFET driver circuit are used instead of switching elements in a main regulator circuit to reduce switching and driving losses. Of course, during...
This paper presents a new control method for H-bridge buck-boost converter regulated by single voltage feedback and dual feedforward controls. This converter has two pairs of the switch, one acts as a synchronous buck and another as a synchronous boost operations, and therefore is suited for battery powered applications to provide an output voltage that is below or above the input voltage. In order...
In order to have a power supply with high voltage conversion ratio for low voltage and high current digital ICs, this paper presents a new two stage converter combined with a coupling capacitor. A bottom switch of the first stage is removed and the switching nodes of the first stage and the second stage are coupled together by the coupling capacitor. The steady state analysis is performed and the...
A partial-resonant tapped-inductor converter with an auxiliary switch is proposed. The circuit construction is the same as a conventional tapped-inductor converter with active clamp circuit, but the drive timing for the auxiliary switch is different from the conventional one. As a result the output stability is improved as compared with the conventional active clamp one. Furthermore, zero current...
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