Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Tetsuya Kawashima0
Akira Yamazaki0
Kouhei Yamada0
Satoshi Sugahara0
Date of Patent
October 12, 2010
0Patent Application Number
121325040
Date Filed
June 3, 2008
0Patent Primary Examiner
Patent abstract
A DC-DC converter includes a series circuit of a main switch and a choke coil and an output capacitor connected to one end of the series circuit and outputs a DC voltage from the one end of the series circuit. A first MOS transistor is connected in parallel to the series circuit and a second MOS transistor is connected in parallel to the output capacitor. A control circuit controls the gate voltages of the first MOS transistor and/or the second MOS transistor so that the first MOS transistor and/or the second MOS transistor outputs a changed target output voltage, whereby the output voltage is made equal to the target voltage at high speed.
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