Title:
POWER SUPPLY CIRCUIT, POWER AMPLIFIER INCLUDING POWER SUPPLY CIRCUIT, AND BROADCAST FACILITY
Document Type and Number:
WIPO Patent Application WO/2010/084588
Kind Code:
A1
Abstract:
Provided is a power supply circuit including a synchronous rectification circuit, which is prevented from being wrongly activated. A power supply circuit (1) comprises a first output system (4) including a first transformer (7) for transforming alternating-current voltage and a secondary side rectification circuit (8) for generating voltage of a direct current including a pulsating current from the alternating current of the first transformer (7), and a second output system (5) including a second transformer (10) for transforming alternating-current voltage, MOSFETs (39, 40), and a synchronous rectification circuit (11) for generating direct-current voltage from the alternating-current voltage of the second transformer (10) by the control of the MOSFETs (39, 40). The power supply circuit (1) further comprises a synchronous rectification control circuit (15) for generating a voltage waveform for controlling switching between opening and closing of the MOSFETs (39, 40) from the direct-current voltage of the first output system (4).
Inventors:
KAWAI, Yuma (7-2-1 Minatojima-Nakamachi, Chuo-ku, Kobe-sh, Hyogo 46, 65000, JP)
Application Number:
JP2009/050895
Publication Date:
July 29, 2010
Filing Date:
January 21, 2009
Export Citation:
Assignee:
TOA CORPORATION (7-2-1, Minatojima-Nakamachi Chuo-ku, Kobe-sh, Hyogo 46, 65000, JP)
ティーオーエー 株式会社 (〒46 兵庫県神戸市中央区港島中町７丁目２番１号 Hyogo, 65000, JP)
ティーオーエー 株式会社 (〒46 兵庫県神戸市中央区港島中町７丁目２番１号 Hyogo, 65000, JP)
International Classes:
H02M3/28
Attorney, Agent or Firm:
ONDA, Hironori et al. (12-1, Ohmiya-cho 2-chome Gifu-shi, Gifu 31, 50087, JP)
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