Abstract: A dual-switch forward power converter, and a method of operating the same, employs a self-coupled driver to achieve among other advantages higher efficiency, lower part count and component cost. In one aspect of the present invention, a power converter comprises a transformer and two switching transistors, and said transformer has two serially-connected primary windings with the first winding connected to a first switching transistor which is biased by a pulse controller, and the second winding couples the voltage across said first winding to bias the second switching transistor. In addition, the circuit on the primary side of said transformer further comprises means of dissipating magnetization current and the circuit on the secondary side comprises a rectifier and a low-pass filter.
Type:
Grant
Filed:
February 27, 2007
Date of Patent:
August 31, 2010
Assignee:
Speedy-Tech Electronics Ltd.
Inventors:
Sun Huat Lim, Teo Chye Phua, Binbin Zhang
Abstract: A dual-switch forward power converter, and a method of operating the same, employs a self-coupled driver to achieve among other advantages higher efficiency, lower part count and component cost. In one aspect of the present invention, a power converter comprises a transformer and two switching transistors, and said transformer has two serially-connected primary windings with the first winding connected to a first switching transistor which is biased by a pulse controller, and the second winding couples the voltage across said first winding to bias the second switching transistor. In addition, the circuit on the primary side of said transformer further comprises means of dissipating magnetization current and the circuit on the secondary side comprises a rectifier and a low-pass filter.
Type:
Application
Filed:
February 27, 2007
Publication date:
May 6, 2010
Applicant:
Speedy-Tech Electronics Ltd.
Inventors:
Sun Huat Lim, Teo Chye Phua, Binbin Zhang