发明授权
US07129682B2 DC to DC converter producing output voltage exhibit rise and fall characteristics independent of load thereon
失效
产生输出电压的直流 - 直流转换器具有独立于其上的负载的上升和下降特性
- 专利标题： DC to DC converter producing output voltage exhibit rise and fall characteristics independent of load thereon
- 专利标题（中）： 产生输出电压的直流 - 直流转换器具有独立于其上的负载的上升和下降特性
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申请号： US11134270申请日： 2005-05-23
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公开(公告)号： US07129682B2公开(公告)日： 2006-10-31
- 发明人: Mitsuo Saeki , Hidetoshi Yano , Hidekiyo Ozawa , Seiya Kitagawa , Toshiyuki Matsuyama , Takashi Matsumoto , Kyuichi Takimoto , Yoshiaki Sano
- 申请人： Mitsuo Saeki , Hidetoshi Yano , Hidekiyo Ozawa , Seiya Kitagawa , Toshiyuki Matsuyama , Takashi Matsumoto , Kyuichi Takimoto , Yoshiaki Sano
- 申请人地址： JP Kawasaki
- 专利权人： Fujitsu Limited
- 当前专利权人： Fujitsu Limited
- 当前专利权人地址： JP Kawasaki
- 代理机构： Staas & Halsey LLP
- 优先权： JP7-308856 19951128
- 主分类号： G05F1/40
- IPC分类号： G05F1/40
摘要：
A direct-current to direct-current conversion (DC/DC) apparatus includes a control circuit having an error amplifier for voltage control, basing the conversion on a pulse width modulation control using an output of the error amplifier. The error amplifier inputs a voltage signal corresponding to an output voltage of a DC/DC result and a plurality of reference voltage signals. The DC/DC apparatus also includes a soft start capacitor to provide one of the plurality of reference voltage signals. The error amplifier amplifies a difference between the voltage signal corresponding of the output voltage of a DC/DC result and a voltage signal of a lower potential among the plurality of reference voltage signals and carries out the pulse width modulation control. Furthermore, the control circuit includes a circuit for discharging charges corresponding to the output voltage of the DC/DC result when a power supply to the control circuit is turned off.
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