A Boost Converter With Voltage Multiplier Cells

Abstract

This paper introduces the use of the voltage multiplier technique applied to the classical non-isolated DC-DC converters. The major benefits obtained with the integration of voltage multipliers with classical converters are the operation with high static gain, reduction of the maximum switch voltage, zero current switch turn-on and minimization of the effects of the reverse recovery current of all diodes with the inclusion of a small inductance. The voltage multiplier also operates as a regenerative clamping circuit, reducing problems with layout and the EMI generation. These characteristics allows to operate with high static again, high efficiency and to obtain a compact circuit for applications where the isolation is not required. The principle of operation, the design procedure and practical results obtained from the prototype are presented