Circuit charge pump arrangement and method for providing a regulated current
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United States of America Patent
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Apr 16, 2013
Grant Date -
May 3, 2012
app pub date -
Feb 8, 2010
filing date -
Feb 12, 2009
priority date (Note) -
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status (Latency Note)
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Abstract
A power source arrangement comprises a controlled and clocked operated power source, that power source providing an output voltage out of a plurality of output voltages in response to a first multiplication factor. One or more regulated current sources are connected to the controlled and clocked operated power source to provide an output current to respective loads. Each of the one or more regulated current sources is adapted to provide a first indication signal upon a regulated operation of the respective current source. The power source arrangement further comprises a dummy power source as well as a dummy current source connected to the dummy power source. The dummy current source receives a load signal corresponding to a voltage drop over the loads connected to the one or more regulated current sources and provides a second indication signal in response thereto. A control circuit receives the respective first and second indication signal and provides the control signal to the controlled and clocked operated power source in response thereto.
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