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US 2016/0241128 A1Published application
Resonant inverter and switching power source unit
AssigneeTDK Corporation
InventorsKatsunori IMAI, Kenji FURUKAWA
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Abstract
A resonance inverter includes a first coil provided between an input terminal and a switch element, a first capacitor provided between the drain and the source of the switch element, a second capacitor serially connected between the drain and the source of the switch element, and a second coil. A drain-source voltage of a switch element can be effectively lowered, by setting a serial resonance frequency based on the second coil and the second capacitor to a value higher than twice of a driving frequency, and lower than 2.75 times thereof.
Claims15
A resonant inverter comprising:
- a switch element;
- and
- at least four energy storage elements,
- the resonant inverter being configured so as to satisfy 2fs<F2≦2.75fs, where fs denotes a driving frequency in which the switch element is driven, and F2 denotes a resonance frequency generated by at least two of the energy storage elements.
1 more element
Dependencies are inferred from the claim text.