Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Konosuke Taki0
Date of Patent
December 22, 2009
Patent Application Number
12170451
Date Filed
July 10, 2008
Patent Citations Received
Patent Primary Examiner
Patent abstract
A pre-driver for driving a high-side transistor of a bridge driver is connected to a bridge driver including first and second drive transistors connected in series between a high voltage power supply and ground. A reference circuit generates a reference voltage that varies depending on the output voltage of the bridge driver. In response to the reference voltage, the regulator circuit generates an internal power supply voltage that is substantially higher than the output voltage by a constant value. A buffer circuit generates a drive voltage for driving the first drive transistor based on the internal power supply voltage and the output voltage.
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