Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Shizuo Morioka0
Date of Patent
February 6, 2007
Patent Application Number
10978334
Date Filed
November 2, 2004
Patent Primary Examiner
Patent abstract
A power supplying power supply circuit which supplies power to an N-phase PWM control DC/DC converter power supply circuit multiplies the output voltage thereof by 1/N by use of a voltage divider and outputs the result of multiplication to the inverting input terminal of an error amplifier. Further, the power supplying power supply circuit inputs the output voltage of the N-phase PWM control DC/DC converter power supply circuit to the non-inverting input terminal via a switching circuit. An output of the error amplifier is supplied to a transistor so as to control and set the voltage value of output power of the power supplying power supply circuit equal to N×output voltage of the N-phase PWM control DC/DC converter power supply circuit.
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