Title:
ELECTRIC CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2013/164945
Kind Code:
A1
Abstract:
To reduce radiation of electromagnetic wave noise from an electric circuit board without using magnetic blocking materials or electromagnetic wave blocking materials, said electric circuit board having a high frequency coil. This electric circuit that includes a voltage converter circuit is characterized in that the voltage converter circuit includes: a voltage converter which includes a first switching element (T1) that interrupts, corresponding to first control signals, a current flowing in a first coil (L1); and a second voltage converter which includes a second switching element (T2) that interrupts, corresponding to second control signals, a current flowing in a second coil (L2). The electric circuit is also characterized in that: the first and second coils (L1, L2) are disposed adjacent to each other on the circuit board; the polarities or the coil current directions of the first and second coils are set such that leakage magnetic fluxes (g1, g2) to be generated by the first and second coils are cancelled out; and operations of the first and second switching elements are substantially synchronized with each other.
Inventors:
NARA FUMINORI (JP)
SAWANISHI RINA (JP)
SAWANISHI RINA (JP)
Application Number:
PCT/JP2013/061197
Publication Date:
November 07, 2013
Filing Date:
April 15, 2013
Export Citation:
Assignee:
AUTOLIV DEV (SE)
NARA FUMINORI (JP)
SAWANISHI RINA (JP)
NARA FUMINORI (JP)
SAWANISHI RINA (JP)
International Classes:
H02M3/155
Foreign References:
| JP2012060796A | 2012-03-22 | |||
| JP2011130572A | 2011-06-30 | |||
| JP2009170620A | 2009-07-30 | |||
| JP2006191705A | 2006-07-20 |
Attorney, Agent or Firm:
INABA, Yoshiyuki et al. (JP)
Yoshiyuki Inaba (JP)
Yoshiyuki Inaba (JP)
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