发明授权
US07778050B2 Energy transfer device and energy transfer control semiconductor device
有权
能量转移装置和能量转移控制半导体装置
- 专利标题： Energy transfer device and energy transfer control semiconductor device
- 专利标题（中）： 能量转移装置和能量转移控制半导体装置
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申请号： US12326179申请日： 2008-12-02
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公开(公告)号： US07778050B2公开(公告)日： 2010-08-17
- 发明人: Tetsuji Yamashita
- 申请人： Tetsuji Yamashita
- 申请人地址： JP Osaka
- 专利权人： Panasonic Corporation
- 当前专利权人： Panasonic Corporation
- 当前专利权人地址： JP Osaka
- 代理机构： Steptoe & Johnson LLP
- 优先权： JP2007-316474 20071207
- 主分类号： H02M3/335
- IPC分类号： H02M3/335
摘要：
The present invention includes a turn-off signal modulating circuit that periodically varies a turn-off timing of a switching element 2 at a preset modulation time after a current detection by a drain current detecting circuit 15, and by modulating the peak of a current flowing through the switching element 2, diffuses switching noise while preventing concentration of an oscillating frequency at a constant frequency even under a constant input voltage and a constant load.
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