Pulse frequency modulation control for switched capacitor DC-DC converter
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United States of America Patent
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Feb 27, 2018
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app pub date -
Oct 27, 2011
filing date -
Oct 27, 2011
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Abstract
Representative implementations of devices and techniques minimize switching losses in a switched capacitor de-de converter. Variable frequency control, including Pulse frequency modulation, is used to control switching based on an existing load. As an example, a system may include a direct current to direct current converter (dc-dc converter) including an energy storage element, switches coupled to the energy storage element, and a digital controller arranged to modulate a switch timing of at least one switch of the switches by adjustment of a transition of a signal pulse provided to adjust an impedance of the at least one switch based on a load coupled to an output of the dc-dc converter.
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