Analysis and design considerations of a novel integrated SMPS with battery backup and power factor correction

Uninterruptible energy is highly appreciated in applications such as personal computers, medical equipment, workstations, portable measurement equipment, and others. Besides, the appearance of standards about the quality of demanded line current for this equipment has been the cause of development of new power supply schemes capable of integrating battery backup and power factor correction in simple structures which offer both, low cost and size alternatives. This paper describes a novel and simple structure which offers power factor correction and battery backup capability. The proposed structure has excellent characteristics in terms of cost, size and efficiency, taking into account the reduced number of components. Experimental results of an experimental prototype of the proposed converter are included too