Multi-output type DC/DC converter operable at a current discontinuous mode or a current continuous mode
AssigneeMitsumi Electric Co., Ltd.
InventorsYuji Yamanaka, Keizo Kumagai, Tatsuya Inenaga, Takeshi Satou
Life of this patent
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Abstract
In a multi-output type DC/DC converter, a controller controls, in accordance with first and second output voltages, turning on/off of a switch circuit and selection in an output selection circuit. The controller makes the multi-output type DC/DC converter operate at a current discontinuous mode when all of the first and the second loads are light. The controller makes the multi-output type DC/DC converter operate at a current continuous mode when all of the first and the second loads are heavy.
Claims14
A multi-output type DC/DC converter for generating, from an input voltage, a plurality of output voltages using a switch circuit to supply the plurality of output voltages to a plurality of loads corresponding thereto, wherein said multi-output type DC/DC converter operates at a current discontinuous mode when all of said loads are light, said multi-output type DC/DC converter operates at a current continuous mode when all of said loads are heavy.
A method of controlling a multi-output type DC/DC converter for generating, from an input voltage, a plurality of output voltages using a switch circuit to supply the plurality of output voltages to a plurality of loads corresponding thereto, said method comprising the step of controlling so as to make said multi-output type DC/DC converter operate at a current discontinuous mode when all of said loads are light and to make said multi-output type DC/DC converter operate at a current continuous mode when all of said loads are heavy.
A multi-output type DC/DC converter for generating, from an input voltage, first through N-th output voltages to supply said first through N-th output voltages to first through N-th loads, respectively, where N represents an integer which is not less than two, said multi-output type DC/DC converter comprising:
- a switch circuit for switching said input voltage to produce an AC voltage;
- first through N-th rectifying and smoothing circuits for producing said first through N-th output voltages;
- an output selection circuit for selecting, as a selected rectifying and smoothing circuit, one of said first through N-th rectifying and smoothing circuits each time slot to supply said AC voltage to said selected rectifying and smoothing circuit;
- and
- a controller for controlling turning on/off of said switching circuit and selection in said output selection circuit in accordance with said first through N-th output voltages,
- wherein said controller makes said multi-output type DC/DC converter operate at a current discontinuous mode when all of said first though N-th loads are light and said controller makes said multi-output type DC/DC converter operate at a current continuous mode when all of said first through N-th loads are heavy.
Dependencies are inferred from the claim text.