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:
Nov. 14, 2006
Filed:
Jul. 29, 2005
Tuck Meng Chan, Singapore, SG;
Xiaowu Gong, Singapore, SG;
Jing HU, Singapore, SG;
Meng Kiat Jeoh, Singapore, SG;
Kok Kee Lim, Singapore, SG;
Junyang Luo, Singapore, SG;
Tuck Meng Chan, Singapore, SG;
Xiaowu Gong, Singapore, SG;
Jing Hu, Singapore, SG;
Meng Kiat Jeoh, Singapore, SG;
Kok Kee Lim, Singapore, SG;
Junyang Luo, Singapore, SG;
Infineon Technologies Austria AG, Villach, AT;
Abstract
In a preferred embodiment, there is provided a switched mode power supply operable in start-up mode, normal mode and standby mode. The power supply may comprise a transformer having a primary winding on a primary side and a secondary winding on a secondary side, the primary winding being coupleable to a DC input voltage, and circuitry on the secondary side being arranged to provide a DC output voltage; and a power controller. The power controller may comprise a regulation controller for regulating a DC supply voltage on a supply line during standby mode, and a high voltage device coupled to the DC input voltage and the supply line. The current through the high voltage device to the supply line, during standby mode, may be controlled by the regulation controller. During standby mode, when the supply voltage is greater than or equal to a reference voltage, the current through the high voltage device to the supply line is substantially zero. When the supply voltage is less than the reference voltage, the greater the difference between the supply voltage and the reference voltage, the greater the current through the high voltage device to the supply line. In other preferred embodiments, there is also provided the power controller itself and a method for regulating a supply voltage during standby mode.