Double-output Luo converters, an advanced voltage-lift technique

Mirror-synimetrical double-output voltages are spccially required in industrial applications and computer periphery circuits. Double output DC-DC converters can convert the positive input source voltage to positive and negativc output voltages by two convcrsion paths. Becausc of the effect of parasitic elements, the output voltage and power-transfer efficiency of DC-DC converters are limited. The voltage-lift technique is a popular method that is widely applied in electronic circuit design. This technique gives a good way of improveing circuit characteristics, aiid has bccii successfully applied for DC-DC convcrters. As are single output (positive and negative output) Luo converters, doublc-output Luo convcrters are a series of new DC-DC step-up converters using only one switch. They arc developed from prototypcs using the advanced voltage-lift technique. These converters perform from positive to positive and negative DC-DC voltage-incrcase convcrsion with high power density, high efficieiicy and cheap topology in a simple structure. They are different from any other existing DC-DC step-up converters aiid possess many advantages including high output voltage with small ripplcs. Thercfore these converters will be widely used in computer peripheral equipment and industrial applications, cspecially for high double-output voltage projects.