DC-DC converter realizing high-efficiency high-gain low-voltage current stress

• Main Authors: ZHANG BO, FU JIAN, QIU DONGYUAN, XIAO WENXUN, HUANG ZITIAN
• Format: Patent
• Language: Chinese; English
• Published: 07.05.2014
• Subjects: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS; CONTROL OR REGULATION THEREOF; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION

The utility model provides a DC-DC converter realizing high-efficiency high-gain low-voltage current stress. A direct current power supply, a switching tube, a first diode, a second diode, a fourth diode, a fifth diode, a first inductor, a third inductor, a first capacitor, a third capacitor and a fourth capacitor form an input stage Boost converter; and the first capacitor, the switching tube, a third diode, a sixth diode, a seventh diode, an eighth diode, a ninth diode, a second inductor, a fourth inductor, a fifth capacitor, a sixth capacitor, a seventh capacitor, an eighth capacitor, a second capacitor and a load form an output stage Boost converter. The second inductor and the fourth inductor are led into the input Boost converter and the output Boost converter as resonant inductors, thereby realizing zero current turning-on of the switching tube, and realizing zero current turning-off of each diode. The gain of the converte4r is 6/(1-D)2, and voltage stress of the switching tube is one third of output v