发明申请
- 专利标题： Circuit for the programmable protection of output over-voltages in a power factor corrector
- 专利标题（中）： 在功率因数校正器中可编程保护输出过电压的电路
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申请号： US10631670申请日： 2003-07-31
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公开(公告)号： US20050270713A1公开(公告)日： 2005-12-08
- 发明人: Albino Pidutti , Stefano Beria
- 申请人： Albino Pidutti , Stefano Beria
- 专利权人： Stmicroelectronics S. r. l. Agrate Brianza Italy
- 当前专利权人： Stmicroelectronics S. r. l. Agrate Brianza Italy
- 优先权： EP02425506.9 20020801
- 主分类号： H02M1/00
- IPC分类号： H02M1/00 ; H02M1/42 ; H02H3/20
摘要：
The present invention refers to a switching power supply, in particular to a power factor corrector, and more particularly to a circuit for the programmable protection against output over-voltages. It also refers to a power factor corrector integrated circuit comprising a circuit for the programmable protection against output over-voltages. In one embodiment the circuit for the programmable protection against output over-voltages in a power Factor corrector comprises means for detecting a signal proportional to the output voltage; a first preset reference voltage; a second preset reference voltage; a transconductance amplifier which receives in input the signal proportional to the output voltage and the first preset reference voltage; a comparator which receives in input the signal proportional to the output voltage and the second preset reference voltage; means suitable for absorbing a current coming from the signal proportional to the output voltage.
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