Patent ID: 8854847
Filing Date: 2014-10-07
Classification: H02M,H02N

Abstract:
1. A power management device comprising: an input for receiving a transient energy pulse that reaches a peak voltage level greater than a minimum voltage at which the device is powered for operating, and that is a signal that changes from a first voltage level to the peak voltage level and returns toward the first voltage; a first storage section and a second storage section for storing energy from the input in response to the transient energy pulse; an output; and a switching section for selectively connecting the input, first storage section, second storage section and output in at least first and second configurations, wherein in the first configuration the first and second storage sections are connected so as to distribute energy from the transient energy pulse between the first and second storage sections and to change the first and second storage sections to a charge voltage level greater than the minimum voltage, and wherein respective voltages across the first and second storage sections are not combined to produce a first output voltage at the output, and in the second configuration, respective voltages across the first and second storage sections are combined additively to produce a second output voltage at the output, wherein the second output voltage after switching to the second configuration is greater than both the minimum voltage and the first output voltage before switching to the second configuration.