Power conserving regulator having intermittently connectable controller
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United States of America Patent
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-
Jun 15, 2004
Grant Date -
Feb 13, 2003
app pub date -
Aug 6, 2002
filing date -
Aug 13, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
In a DC--DC converter, a regulator circuit 14 acts to drive a switching element Q1 based on an error between a detected voltage obtained by a voltage divider circuit 11 and a reference voltage from a reference voltage generating circuit 12 and to output a step-up voltage by a coil L1 to an output terminal Vout. A timing generating circuit 16 acquires a driving interval of the switching element Q1 set by the regulator circuit 14 and then decides that, if the interval is long, a load is in a light load state. In this case, the timing generating circuit 16 controls to supply a driving power to an output voltage controller intermittently by driving switching unit S1, S2.
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