Switching power supply unit
First Claim
1. A switching power supply unit, comprising:
- a transformer including a first transformer coil and a second transformer coil magnetically coupled to each other,a first bidirectional switching circuit disposed between the first transformer coil and a first DC power supply, and configured to include at least one switch array configured of a pair of switches connected in series,a second bidirectional switching circuit disposed between the second transformer coil and AC voltage input/output terminals, and configured such that switch arrays are connected in parallel to each other, each of the switch arrays being configured of a pair of switches connected in series,a third bidirectional switching circuit disposed between the second switching circuit and the AC voltage input/output terminals, and configured to include at least one switch array configured of a pair of switches connected in series, anda control section controlling the first to third switching circuits.
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Accused Products
Abstract
A switching power supply unit is provided, in which input terminals of an AC voltage can be made common to output terminals of an AC voltage. A first switching circuit is provided between a winding of a transformer and a main battery. A second switching circuit is provided between another winding of the transformer and input/output terminals. A third switching circuit is provided between the second switching circuit and the input/output terminals. Each of the first to third switching circuits includes a bidirectional switch (configured of a pair of one switching element and one diode connected in parallel to each other). A circuit for outputting an AC output voltage can be common to a circuit for inputting an AC input voltage to charge the main battery.
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Citations
4 Claims
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1. A switching power supply unit, comprising:
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a transformer including a first transformer coil and a second transformer coil magnetically coupled to each other, a first bidirectional switching circuit disposed between the first transformer coil and a first DC power supply, and configured to include at least one switch array configured of a pair of switches connected in series, a second bidirectional switching circuit disposed between the second transformer coil and AC voltage input/output terminals, and configured such that switch arrays are connected in parallel to each other, each of the switch arrays being configured of a pair of switches connected in series, a third bidirectional switching circuit disposed between the second switching circuit and the AC voltage input/output terminals, and configured to include at least one switch array configured of a pair of switches connected in series, and a control section controlling the first to third switching circuits. - View Dependent Claims (2, 3, 4)
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Specification