Title:
WIRELESS POWER SUPPLY DEVICE
Document Type and Number:
WIPO Patent Application WO/2016/080044
Kind Code:
A1
Abstract:
A switching control circuit (10) alternately turns on and off switching elements (Q1, Q2), with an intervening dead time, at a switching frequency at which the impedance of a multi-resonant circuit becomes inductive. During operation in a third quadrant of the current-voltage characteristics of the switching elements (Q1, Q2), a control signal is supplied to control terminals of the switching elements (Q1, Q2) to cause the switching elements to allow current to pass therethrough, and the dead time is determined such that, when tc represents the commutation time period in which the voltages at both ends of switching circuits (S1, S2) change, ta represents the time period of operation in the third quadrant, and td represents the dead time, tc≤td<(tc+ta) is satisfied.
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Inventors:
HOSOTANI TATSUYA (JP)
Application Number:
PCT/JP2015/074328
Publication Date:
May 26, 2016
Filing Date:
August 28, 2015
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H02J17/00
Domestic Patent References:
| WO2012101907A1 | 2012-08-02 |
Foreign References:
| JP2002345241A | 2002-11-29 |
Attorney, Agent or Firm:
Kaede Patent Attorneys' Office (JP)
Patent business corporation Kaede Patent Attorneys' Office (JP)
Patent business corporation Kaede Patent Attorneys' Office (JP)
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