发明申请
- 专利标题： Switching Power Supply Device and Electronic Apparatus
- 专利标题（中）： 开关电源设备和电子设备
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申请号： US10564025申请日： 2005-04-20
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公开(公告)号： US20080049472A1公开(公告)日： 2008-02-28
- 发明人: Akio Nishida , Fumi Kitao , Hiroshi Takemura
- 申请人： Akio Nishida , Fumi Kitao , Hiroshi Takemura
- 优先权： JP2004-201066 20040707
- 国际申请： PCT/JP05/07496 WO 20050420
- 主分类号： H02M5/42
- IPC分类号： H02M5/42
摘要：
A switching power supply device includes a primary winding of a transformer that is connected in series to a first switching element, and a secondary winding is provided with a rectifier circuit and an output voltage control circuit arranged to detect an output voltage and feed it back to a control circuit. The control circuit is provided with an on-period control circuit arranged to turn off the first switching element in an on-state based on a feedback signal from the output voltage control circuit and an off-period control circuit arranged to control an off-period thereof by delaying turn-on of the first switching element based on the feedback signal.
公开/授权文献
- US07433208B2 Switching power supply device and electronic apparatus 公开/授权日：2008-10-07
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