Title :
The design of LED driving power based on current-double synchronous rectifier ZVZVS
Author :
Xing Xue ; Weikang Chen ; Baoqiang Li
Author_Institution :
Sch. of Mech. & Electr. Eng., Guilin Univ. of Electron. & Technol., Guilin, China
Abstract :
LED driving power is mostly used switching power according to the characteristics of LED and the requirements of LED power supply. This paper points out the reasons for low efficiency of switching power supply: the loss of the power transistor and the loss of the rectifier diode. Phase-shifted full-bridge ZVZCS control can achieve the zero-voltage switching of leading leg and zero-current switching of lagging leg, reduce switching loss. The rectifier diode is substituted by low-impedance switching tube in the technology of synchronous rectifier, which can reduce the loss of output rectifier. Current-double rectification can reduce the output current ripple. The schematics are designed and simulated by the simulation software saber. The results achieved the desired goals.
Keywords :
light emitting diodes; power transistors; rectifiers; zero current switching; zero voltage switching; LED driving power; LED power supply; current ripple; current-double synchronous rectifier ZVZVS; low-impedance switching tube; phase-shifted full-bridge ZVZCS control; power transistor; rectifier diode; switching power supply; zero-current switching; zero-voltage switching; Abstracts; Brightness; Educational institutions; Inductors; Light emitting diodes; Switches; Current-double; Phase-shift full-bridge; Synchronous rectification; ZVZCS;
Conference_Titel :
Electronic Packaging Technology and High Density Packaging (ICEPT-HDP), 2012 13th International Conference on
Conference_Location :
Guilin
Print_ISBN :
978-1-4673-1682-8
Electronic_ISBN :
978-1-4673-1680-4
DOI :
10.1109/ICEPT-HDP.2012.6474893
