Power supply method and apparatus
First Claim
Patent Images
1. A power supply apparatus, comprising:
- a plurality of power source circuits with a common direct current power source;
an oscillator circuit which generates a common oscillator signal; and
a controller comprising a plurality of control circuits respectively coupled to control said plurality of power source circuits, said plurality of control circuits commonly receiving said common oscillator signal and performing a time sharing control based on the oscillator signal to enable the plurality of power source circuits to receive power from the common direct current power source in different timings and to output respective voltages,wherein said plurality of power source circuits comprises at least two different types of converter circuits.
2 Assignments
0 Petitions
Accused Products
Abstract
A power supply apparatus includes a plurality of power source circuits, an oscillator circuit and a controller. The plurality of power source circuits use a common direct current power source. The oscillator circuit generates a plurality of oscillator signals. The controller performs a time sharing control based on the plurality of oscillator signals to enable the plurality of power source circuits to receive power from the common direct current power source in different timings and to output respective voltages.
16 Citations
19 Claims
-
1. A power supply apparatus, comprising:
-
a plurality of power source circuits with a common direct current power source; an oscillator circuit which generates a common oscillator signal; and a controller comprising a plurality of control circuits respectively coupled to control said plurality of power source circuits, said plurality of control circuits commonly receiving said common oscillator signal and performing a time sharing control based on the oscillator signal to enable the plurality of power source circuits to receive power from the common direct current power source in different timings and to output respective voltages, wherein said plurality of power source circuits comprises at least two different types of converter circuits. - View Dependent Claims (2, 3, 4)
-
-
5. A power supply apparatus, comprising:
-
a plurality of power generating means for generating a plurality of different output powers based on a common direct current power source; oscillating means for generating a common oscillator signal; and controlling means comprising a plurality of control circuits respectively coupled to control said plurality of power generating means, said plurality of control circuits commonly receiving said common oscillator signal and performing a time sharing control based on the oscillator signal to enable the plurality of power generating means to receive power from the common direct current power source in different timings and to output respective voltages, wherein said plurality of power generating means comprises at least two different types of converting means. - View Dependent Claims (6, 7, 8)
-
-
9. A power supply method, comprising the steps of:
-
providing a plurality of power source circuits with a common direct current power source; generating a common oscillator signal, and performing a time sharing control based on the common oscillator signal to enable the plurality of power source circuits to receive power from the common direct current power source under different timings and to output respective voltages, wherein said step of performing a time sharing control is performed by a controller comprising a plurality of control circuits respectively coupled to control said plurality of power source circuits, said plurality of control circuits commonly receiving said common oscillator signal, and wherein said plurality of power source circuits comprises at least two different types of converter circuits. - View Dependent Claims (10, 11, 12)
-
-
13. A power supply apparatus, comprising:
-
a plurality of power source circuits with a common direct current power source; an oscillator circuit which generates a common oscillator signal; and a controller comprising a plurality of control circuits respectively coupled to control said plurality of power source circuits, said plurality of control circuits commonly receiving said common oscillator signal and performing a time sharing control based on an edge of the oscillator signal to enable the plurality of power source circuits to receive power from the common direct current power source in different timings and to output respective voltages, wherein said plurality of power source circuits comprises at least two different types of converter circuits. - View Dependent Claims (14, 15, 16, 17, 18)
-
-
19. A power supply control apparatus, comprising:
-
an oscillator circuit which generates a common oscillator signal; a plurality of independently controllable power source circuits with a common direct current power source, at least one of the plurality of power source circuits comprising; an electric storage circuit; a semiconductor switch for controlling a storage of an electric power supplied by the common direct current power source into the electric storage circuit; an error amplifier for comparing a divided voltage obtained by dividing an output voltage and a reference voltage to output a control signal such that the divided voltage is equalized to the reference voltage; and a controlling circuit for determining a time to start the storage of the electric power supplied by the common direct current power source into the electric storage circuit based on the control signal output by the error amplifier and the common oscillator signal generated by the oscillator circuit, wherein the controlling circuit determines the time to start the storage of the electric power differently from times that remaining power source circuits of the plurality of power source circuits start the storage of the electric power.
-
Specification
-
- Resources
Litigation Campaign Assessment
Thank you for your request. You will receive a custom alert email when the Litigation Campaign Assessment is available.
×
-
Current AssigneeRICOH Electronic Devices Co., Ltd. (Nisshinbo Holdings Incorporated)
-
Original AssigneeRicoh Company Limited
-
InventorsMatsuo, Masahiro, Nomura, Ritsuko
-
Primary Examiner(s)STERRETT, JEFFREY L
-
Application NumberUS10/670,498Publication NumberTime in Patent Office1,061 DaysField of Search323/222, 323/267, 323/272, 323/282, 323/351US Class Current323/267CPC Class CodesH02M 1/008 Plural converter units for ...H02M 3/155 using semiconductor devices...
