RESONANT DC/DC CONVERTER AND RESONANT DC/DC CONVERTER DEVICE

• Main Authors: FUMA HIROO, UMENO KOJI
• Format: Patent
• Language: English
• Published: 18.09.2014
• 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

PROBLEM TO BE SOLVED: To provide a resonant DC/DC converter capable of improving output controllability and efficiency while suppressing increase in the number of components.SOLUTION: Primary side coils of a resonant DC/DC converter 20 comprise a first coil L1 and a second coil L1 arranged on a transformer 22. A first auxiliary coil L4 is connected to the first coil L1 in series, and a second auxiliary coil L5 is connected to the second coil L2 in series. A magnetic flux formed by the first coil at a secondary side coil and a magnetic flux formed by the second coil at the secondary side coil are configured to be reverse phases with each other. The first auxiliary coil L4 and the second auxiliary coil L5 are magnetically in-phase coupled. A phase difference of signals supplied to switch elements T1 and T2 is changed between 0 degree to 180 degrees so as to control output.