- 专利标题: Single ended forward DC-to-DC converter providing enhanced resetting for synchronous rectification
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申请号: US730684申请日: 1996-10-11
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公开(公告)号: US5781420A公开(公告)日: 1998-07-14
- 发明人: Gang Xia , Fei Ma
- 申请人: Gang Xia , Fei Ma
- 申请人地址: MA Boston
- 专利权人: International Power Devices, Inc.
- 当前专利权人: International Power Devices, Inc.
- 当前专利权人地址: MA Boston
- 主分类号: H02M3/335
- IPC分类号: H02M3/335
摘要:
A single ended forward DC-to-DC converter includes a transformer having a primary winding electrically connected to a primary switch and a secondary winding electrically connected to a secondary switch and a clamping capacitor. The clamping capacitor stores the magnetization energy from the secondary winding when the primary switch is turned off, thus causing the transformer core to be reset during the period that the primary switch remains off. The converter can use mosfets as the primary and secondary switches, such that a change in the voltage at the secondary winding of the transformer, due to the turning off of the primary switch, results in an automatic turning on of the secondary switch. The combination of the clamping capacitor and the mosfet switches increases the simplicity of the DC-to-DC converter while eliminating undesirable characteristics such as dead time and voltage stresses on the switches. The DC-to-DC converter of the present invention can be used to carry out synchronous rectification and zero voltage switching.
公开/授权文献
- US5179262A Manufacture of ophthalmic lenses by excimer laser 公开/授权日:1993-01-12
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