Patent ID: 8339185
Filing Date: 2012-12-25
Classification: G11C,H02M

Abstract:
1. A charge pump system comprising: a master charge pump section to provide an output voltage at an external output node, including: an internal load having an adjustable value; a slave charge pump section connected to drive the internal load, including: control logic connected to the master charge pump section to receive the oscillator frequency of the first regulation circuitry and supply the first control signal, connected to the slave charge pump section to receive the other oscillator frequency of the second regulation circuitry and supply the second control signal, and connected to the internal load to set the adjustable value thereof, wherein the control logic can set the adjustable value of the internal load based upon a comparison of the oscillator frequencies of the first and second regulation circuitries while the first and second charge pumps are operating with the same number of active stages, and can alter the number of active stages in the first charge pump based upon a comparison of the oscillator frequencies of the first and second regulation circuitries while the first and second charge pumps are operating with a different number of active stages.