发明授权
US07336060B2 Circuit and method for controlling a DC-DC converter by enabling the synchronous rectifier during undervoltage lockout
有权
用于在欠压锁定期间使同步整流器控制DC-DC转换器的电路和方法
- 专利标题： Circuit and method for controlling a DC-DC converter by enabling the synchronous rectifier during undervoltage lockout
- 专利标题（中）： 用于在欠压锁定期间使同步整流器控制DC-DC转换器的电路和方法
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申请号： US11225186申请日： 2005-09-14
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公开(公告)号： US07336060B2公开(公告)日： 2008-02-26
- 发明人: Hidenobu Ito
- 申请人： Hidenobu Ito
- 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： Arent Fox LLP
- 优先权： JP2005-103940 20050331
- 主分类号： G05F5/00
- IPC分类号： G05F5/00 ; H02H7/00 ; H02H3/24
摘要：
A control circuit for a DC-DC converter that prevents a deficiency from occurring due to sudden interruption in power supply. The control circuit activates and inactivates a main switching output transistor and a synchronous rectification output transistor to convert the input voltage to an output voltage. The output voltage is smoothed by a smoothing capacitor. When the input voltage decreases, the control circuit activates the synchronous rectification output transistor to readily discharge the smoothing capacitor via the synchronous rectification output transistor.
公开/授权文献
- US20060220631A1 Circuit and method for controlling DC-DC converter 公开/授权日：2006-10-05
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