Resonant inverter and isolated resonant power supply device
First Claim
1. A resonant inverter comprising:
- an input terminal to which an input voltage is applied;
a first switch and a second switch that are alternately turned on and off;
a transformer that includes a first winding and a second winding on a primary side;
a first resonant circuit that includes a first capacitive element and a first coil; and
a second resonant circuit that includes a second capacitive element and a second coil, whereinthe first switch, the first winding, and the first resonant circuit constitute a first inverter circuit,the second switch, the second winding, and the second resonant circuit constitute a second inverter circuit,the input terminal is connected between the first winding and the second winding of the transformer,the first capacitive element is connected in parallel to the first switch,the second capacitive element is connected in parallel to the second switch,the first coil is placed between the first switch and the first winding, andthe second coil is placed between the second switch and the second winding.
1 Assignment
0 Petitions
Accused Products
Abstract
A resonant inverter includes an input terminal, a first switch, a second switch, a transformer, a first resonant circuit, and a second resonant circuit. To the input terminal, an input voltage is applied. The first switch and the second switch are alternately turned on and off. The transformer includes a first winding and a second winding on a primary side. The first resonant circuit includes a first capacitive element and a first coil. The second resonant circuit includes a second capacitive element and a second coil. The first switch, the first winding, and the first resonant circuit constitute a first inverter circuit. The second switch, the second winding, and the second resonant circuit constitute a second inverter circuit. The input terminal is connected between the first winding and the second winding.
11 Citations
17 Claims
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1. A resonant inverter comprising:
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an input terminal to which an input voltage is applied; a first switch and a second switch that are alternately turned on and off; a transformer that includes a first winding and a second winding on a primary side; a first resonant circuit that includes a first capacitive element and a first coil; and a second resonant circuit that includes a second capacitive element and a second coil, wherein the first switch, the first winding, and the first resonant circuit constitute a first inverter circuit, the second switch, the second winding, and the second resonant circuit constitute a second inverter circuit, the input terminal is connected between the first winding and the second winding of the transformer, the first capacitive element is connected in parallel to the first switch, the second capacitive element is connected in parallel to the second switch, the first coil is placed between the first switch and the first winding, and the second coil is placed between the second switch and the second winding. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A resonant inverter comprising:
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an input terminal to which an input voltage is applied; a first switch and a second switch that are alternately turned on and off; a transformer that includes a first winding and a second winding on a primary side; a first resonant circuit that is formed of a first capacitive element and a leakage inductance of the transformer; a second resonant circuit that is formed of a second capacitive element and the leakage inductance of the transformer; a third resonant circuit that includes a series connection of a fourth coil and a fourth capacitive element, the series connection being placed parallel to the first switch; and a fourth resonant circuit that includes a series connection of a fifth coil and a fifth capacitive element, the series connection being placed parallel to the second switch, wherein the first switch, the first winding, and the first resonant circuit constitute a first inverter circuit, the second switch, the second winding, and the second resonant circuit constitute a second inverter circuit, and the input terminal is connected between the first winding and the second winding of the transformer. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A resonant inverter comprising:
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an input terminal to which an input voltage is applied; a first switch and a second switch that are alternately turned on and off; a transformer that includes a first winding and a second winding on a primary side; a first resonant circuit that includes a first capacitive element and a first coil; a second resonant circuit that includes a second capacitive element and a second coil; a third resonant circuit that includes a series connection of a fourth coil and a fourth capacitive element, the series connection being placed parallel to the first switch; and a fourth resonant circuit that includes a series connection of a fifth coil and a fifth capacitive element, the series connection being placed parallel to the second switch, wherein the first switch, the first winding, and the first resonant circuit constitute a first inverter circuit, the second switch, the second winding, and the second resonant circuit constitute a second inverter circuit, and the input terminal is connected between the first winding and the second winding of the transformer.
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Specification