Switching voltage regulator operating without a discontinuous mode
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United States of America Patent
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-
Feb 20, 2007
Grant Date -
Jun 15, 2006
app pub date -
Dec 10, 2004
filing date -
Dec 10, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A switching circuit operates with a first operating state and a second operating state. During the first operating state, the switching circuit allows a switching current to linearly increase. During the second operating state, the switching circuit allows the switching current to linearly decrease. A control circuit is coupled to the switching circuit for controlling the switching circuit to operate with the first operating state or the second operating state. A setting circuit generates a threshold signal for the control circuit to ensure that during the first operating state the switching current linearly increases to become higher than or equal to a current value set by the threshold signal. Thereby, the switching current is prevented from linearly decreasing to reverse polarity during the second operating state.
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