Power supply apparatus
First Claim
1. A power supply apparatus for regulating a voltage generated by a DC power supply and for outputting the voltage to a predetermined load, comprising:
- first voltage transducer means for boosting the voltage generated by the DC power supply;
second voltage transducer means for converting the voltage generated by the DC power supply to a predetermined voltage and for outputting the converted voltage to the predetermined load;
operation control means driven by an output voltage from the first voltage transducer means, the operation control means outputting a switching pulse in accordance with reception of an activation signal and controlling the operation of the second voltage transducer means; and
activation control means for inputting the output voltage from the first voltage transducer means to the operation control means and, after a predetermined period of time, inputting the activation signal to the operation control means.
1 Assignment
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Accused Products
Abstract
A power supply apparatus includes an interface microcomputer driven by the output voltage from a first voltage transducer circuit for boosting the output voltage of a DC power supply. The interface microcomputer outputs an activation signal for activating a control IC. When a switch receives the activation signal from the control IC, the switch becomes conducting and applies the output voltage from the first voltage transducer circuit to the control IC. A delay circuit delays the activation signal from the interface microcomputer for a predetermined period of time and supplies the delayed activation signal to the control IC, thus causing the control IC to start controlling the operation of a voltage output unit. A second voltage transducer circuit for boosting the output voltage of the DC power supply and outputting a voltage of 5 V includes a charge pump circuit at the output stage thereof.
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Citations
9 Claims
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1. A power supply apparatus for regulating a voltage generated by a DC power supply and for outputting the voltage to a predetermined load, comprising:
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first voltage transducer means for boosting the voltage generated by the DC power supply;
second voltage transducer means for converting the voltage generated by the DC power supply to a predetermined voltage and for outputting the converted voltage to the predetermined load;
operation control means driven by an output voltage from the first voltage transducer means, the operation control means outputting a switching pulse in accordance with reception of an activation signal and controlling the operation of the second voltage transducer means; and
activation control means for inputting the output voltage from the first voltage transducer means to the operation control means and, after a predetermined period of time, inputting the activation signal to the operation control means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification