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Definition of "Charge Pump" |
A power supply which uses capacitors to store and transfer energy to the output, often stepping the voltage up or down. Charge is transferred from one capacitor to another under control of regulator and switching circuitry. Maxim offers both regulated and non-regulated charge pumps, as well as ICs with on-board charge pumps to boost internal voltages. See application note 2031, "DC-DC Converter Tutorial" and application note 660, "Regulator topologies for battery-powered systems." / A circuit that uses a capacitor to increase the output voltage of a circuit. A capacitor is charged up, either directly or indirectly, by an input signal. The capacitor voltage is than applied to or used as an output voltage. Also see IC Charge Pumps used as voltage converters. / It is a kind of a DC to DC converter that uses capacitors as energy storage elements to create either a higher or lower voltage power source. It converts, and optionally regulates voltages using switching technology and capacitive-energy storage elements. |
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