发明授权
US07078868B2 DC—DC converter and device for operation of a high pressure discharge lamp using said converter
失效
DC-DC转换器和使用所述转换器操作高压放电灯的装置
- 专利标题: DC—DC converter and device for operation of a high pressure discharge lamp using said converter
- 专利标题(中): DC-DC转换器和使用所述转换器操作高压放电灯的装置
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申请号: US10891024申请日: 2004-07-15
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公开(公告)号: US07078868B2公开(公告)日: 2006-07-18
- 发明人: Takanori Samejima , Masashi Okamoto , Yoshikazu Suzuki
- 申请人: Takanori Samejima , Masashi Okamoto , Yoshikazu Suzuki
- 申请人地址: JP Tokyo
- 专利权人: Ushiodenki Kabushiki Kaisha
- 当前专利权人: Ushiodenki Kabushiki Kaisha
- 当前专利权人地址: JP Tokyo
- 代理商 David S. Safran
- 优先权: JP2003-203648 20030730
- 主分类号: H05B37/02
- IPC分类号: H05B37/02
摘要:
A low cost DC—DC converter which facilitates a reduction of the switching loss in a wide, variable range of the continuity ratio of the main switching device includes a direct current source; an ON-OFF-controllable main switching device; a main coil which is series connected to the main switching device; a fly-wheel diode which is arranged such that the induction current of the above described main coil flows when the main switching device is shifted into the OFF state; a smoothing capacitor for smoothing the output of the main coil; an auxiliary coil, a resonant capacitor and an ON-OFF-controllable auxiliary switching device. The main switching device and the auxiliary switching device are controlled such that each are alternatively shifted into the ON state such that the main switching device is shifted into the ON state within a given time after the auxiliary switching device has been shifted into the OFF state.