Regulated Step-Up Power Supplies: Design and Simulation

This paper presents a technique that can be used in the design of step-up regulated linear power supplies. The proposed technique enables the proper selection of the components that compose the power supply. This power supply increases its input voltage through a full wave voltage doubler, which replaces the typical full bridge rectifier. The selection of the capacitors that compound the voltage doubler is not simple, particularly, when a current-hungry load is connected to the circuit. In this paper a detailed analysis of a full wave voltage doubler is carried out, and simultaneously some design formulas are presented, that can be used very prolifically during the design process. To demonstrate the applicability of the proposed technique an experimental prototype was assembled.