发明申请
US20050068795A1 Controlled resonant half-bridge inverter for power supplies and electronic ballasts
审中-公开
用于电源和电子镇流器的受控共振半桥逆变器
- 专利标题: Controlled resonant half-bridge inverter for power supplies and electronic ballasts
- 专利标题(中): 用于电源和电子镇流器的受控共振半桥逆变器
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申请号: US10674238申请日: 2003-09-29
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公开(公告)号: US20050068795A1公开(公告)日: 2005-03-31
- 发明人: John Konopka
- 申请人: John Konopka
- 主分类号: H02M3/24
- IPC分类号: H02M3/24 ; H02M7/538 ; H05B41/282 ; H05B41/285
摘要:
A circuit (10) comprises a driven half-bridge inverter (100), a resonant output circuit (300), and a control circuit (400,500). Inverter (100) includes an upper transistor (120), a lower transistor (130), and a driver circuit (200). Control circuit (400,500) monitors a signal (VX) within resonant output circuit (300). In response to the signal (VX) reaching a predetermined level, control circuit (400,500) directs driver circuit (200) to render upper transistor (120) conductive and lower transistor (130) non-conductive for a predetermined first period. Upon completion of the first period, control circuit (400,500) directs driver circuit (200) to render upper transistor (120) non-conductive and lower transistor (130) conductive for a second period. The second period ends when the signal (VX) again reaches the predetermined level.
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