发明授权
US07864554B2 Circuit for reducing the variations of auto-supply voltage of a control circuit of a switching power supply
有权
用于减小开关电源的控制电路的自动电源电压的变化的电路
- 专利标题： Circuit for reducing the variations of auto-supply voltage of a control circuit of a switching power supply
- 专利标题（中）： 用于减小开关电源的控制电路的自动电源电压的变化的电路
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申请号： US10589038申请日： 2005-02-21
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公开(公告)号： US07864554B2公开(公告)日： 2011-01-04
- 发明人: Claudio Adragna , Mauro Fagnani
- 申请人： Claudio Adragna , Mauro Fagnani
- 申请人地址： IT Agrate Brianza (MI)
- 专利权人： STMicroelectronics S.R.L.
- 当前专利权人： STMicroelectronics S.R.L.
- 当前专利权人地址： IT Agrate Brianza (MI)
- 代理机构： Hogan Lovells US LLP
- 优先权： ITMI2004A0383 20040302
- 国际申请： PCT/EP2005/050737 WO 20050221
- 国际公布： WO2005/086333 WO 20050915
- 主分类号： H02M7/5383
- IPC分类号： H02M7/5383 ; H02M3/335
摘要：
A circuit for reducing the variations of auto-supply voltage of a control circuit of a switching power supply, where the control circuit supplies an activation or deactivation signal of a power transistor, includes an auto-supply voltage generator, a controlled switch capable of selectively connecting the generator to the control circuit, and a driving circuit of the controlled switch that supplies a closing signal of the controlled switch after a predefined delay of time starting from the deactivation command.
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