Title:
SWITCHING POWER SUPPLY DEVICE
Document Type and Number:
Japanese Patent JP2017184500
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To reduce cost of manufacture without increasing power loss.SOLUTION: A switching power supply device 1 performing class E operation includes n inductor 12 for outputting a DC power, supplied from a DC power supply 11, while smoothing, a switching element 13 connected between the output terminal of the inductor and the ground, and switching the DC power outputted from the inductor, a capacitor 15 connected in parallel with the switching element, a first LC series resonance circuit (an inductor 16 and a capacitor 17) connected between the switching element and a load, and having a resonance frequency substantially same as the switching frequency, and a second LC series resonance circuit (an inductor 21 and a capacitor 22) connected in parallel with the switching element, and having a resonance frequency higher than the switching frequency of the switching element.SELECTED DRAWING: Figure 1
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Inventors:
MASUDA MITSURU
KUSUNOKI MASAHIRO
KUSUNOKI MASAHIRO
Application Number:
JP2016069622A
Publication Date:
October 05, 2017
Filing Date:
March 30, 2016
Export Citation:
Assignee:
FURUKAWA ELECTRIC CO LTD
International Classes:
H02M3/155
Foreign References:
| US20070171680A1 | 2007-07-26 |
Attorney, Agent or Firm:
Yoshihiko Emura
Megumi Okubo
Megumi Okubo