Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Naohiko Morota0
Kazuhiro Murata0
Date of Patent
February 17, 2009
Patent Application Number
11700924
Date Filed
February 1, 2007
Patent Citations Received
Patent Primary Examiner
Patent abstract
A feedback circuit (3) generates an error amplification signal VEAO for stabilizing an output voltage Vo at the reference voltage. The reference voltage is set beforehand in the feedback circuit (3). The peak value of drain current ID passing through a switching element (1) is controlled by the error amplification signal VEAO and the output voltage Vo is stabilized. Meanwhile, when a load (132) increases, a reference voltage variable circuit (13) increases the internal reference voltage of the feedback circuit (3) based on the error amplification signal VEAO, so that fluctuations in output voltage due to load fluctuations are reduced.
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