发明授权
US07733072B2 Step-down/step-up DC/DC converter apparatus and method with inductor current threshold value adjusting
有权
降压/升压DC / DC转换器装置和电感电流阈值调整方法
- 专利标题： Step-down/step-up DC/DC converter apparatus and method with inductor current threshold value adjusting
- 专利标题（中）： 降压/升压DC / DC转换器装置和电感电流阈值调整方法
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申请号： US11845548申请日： 2007-08-27
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公开(公告)号： US07733072B2公开(公告)日： 2010-06-08
- 发明人: Yoshihide Kanakubo
- 申请人： Yoshihide Kanakubo
- 申请人地址： US TX Dallas
- 专利权人： Texas Instruments Incorporated
- 当前专利权人： Texas Instruments Incorporated
- 当前专利权人地址： US TX Dallas
- 代理商 William B. Kempler; Wade J. Brady, III; Frederick J. Telecky, Jr.
- 主分类号： G05F1/59
- IPC分类号： G05F1/59
摘要：
The invention provides a switching power supply device that can restrain the variation in the ripple of the output voltage corresponding to the variation in the input voltage and a control device thereof. When output voltage Vout is higher than a target value, switching converter circuit 10 is set to a second state (a state of discharging the power stored in inductor L1 to terminal To). When output voltage Vout is lower than the target value, switching converter circuit 10 is set to a first state (a state of storing the power input from terminal Ti in inductor L1) for a prescribed period of time and is then returned to the second state. Also, when the current flowing through inductor L1 exceeds a threshold value, switching converter circuit 10 is set to the second state. In addition, the threshold value of the inductor current is adjusted corresponding to the ratio between input voltage Vin and output voltage Vout, so that the variation in the ripple of output voltage Vout occurring together with the variation in that ratio can be restrained.
公开/授权文献
- US20090059626A1 SWITCHING POWER SUPPLY DEVICE AND CONTROL DEVICE THEREOF 公开/授权日：2009-03-05
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