Electricity: power supply or regulation systems – In shunt with source or load – Using choke and switch across source
Patent
1997-07-08
1998-11-03
Hecker, Stuart N.
Electricity: power supply or regulation systems
In shunt with source or load
Using choke and switch across source
323266, G05F 110
Patent
active
058314180
ABSTRACT:
A converter for converting a DC voltage not stabilized, such as the terminal voltage of a battery, into a stable DC voltage, comprising a voltage comparison unit (2 in FIG. 1) and an operation changeover control unit (3). The voltage comparison unit (2) compares an input voltage and an output voltage. The operation changeover control unit (3) controls the changeover of the operations of the DC/DC converter (1) so that the DC/DC converter (1) may perform a step-down operation as the operation of a step-down type converter when the input voltage is higher than the output voltage as the result of the comparison, and that it may perform a step-up operation as the operation of a step-up type converter when the output voltage is higher than the input voltage. Thus, losses in the smoothing reactor and smoothing capacitor of the step-up/down converter are suppressed to enhance the efficiency thereof.
REFERENCES:
patent: 5572112 (1996-11-01), Saeki et al.
patent: 5627459 (1997-05-01), Itoyama et al.
patent: 5721483 (1998-02-01), Kolluri et al.
Fujitsu Ltd.
Hecker Stuart N.
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