The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 05, 1998
Filed:
Jan. 24, 1997
Franki Ngai Poon, Kowloon, HK;
Man Hay Pong, South Horizons, Aplei Chau, HK;
Other;
Abstract
A family of power converter is invented. Each of these converter accomplishes zero voltage switching to minimize switching losses. The basic embodiment comprises of two switches connected across the input source, a series combination of inductor and capacitor is connected to the node joining the two switches. The switches are driven by asymmetrical driving pulses with variable duty cycle. The output comprises of an inductor and capacitor filter and diode combinations. This arrangement minimise output ripple. In order to further reduce dissipation switches are connected in parallel with output diodes and these switches operation in synchronization with the main switches. The basic embodiment can be modified to provide converter with negative output or boost output. The embodiment can also be modified for isolated converter with transformer in both the half bridge and full bridge circuit.