Patent ID: 9467040
Filing Date: 2016-10-11
CPC Classification: H02M

Claim Text:
1. A controlled electric power supply system, the system comprising: a step-down power converter; a step-up power converter; and a controller, coupled to the step-down power converter and to the step-up power converter, configured to: control down-conversion by the step-down power converter of entry voltage from a power source and prevent up-conversion by the step-up power converter, substantially when the entry voltage is larger than a measured exit voltage and is in compliance with a first criterion that is based on the entry voltage and on the measured exit voltage; wherein the measured exit voltage is measured at an exit of both step-up power converter and the step-down power converter; and control up-conversion by the step-up power converter of the entry voltage and prevent down-conversion by the step-down power converter, substantially when the entry voltage is lower than the measured exit voltage and is in compliance with a second criterion that is based on the entry voltage and on the measured exit voltage, wherein the controller is configured to determine that the entry voltage is in compliance with said first criterion substantially when the entry voltage exceeds a first voltage threshold that is based on the measured exit voltage and is higher than the measured exit voltage, and to determine that the entry voltage is in compliance with said second criterion substantially when the entry voltage is lower than a second voltage threshold that is based on the measured exit voltage and is lower than the measured exit voltage.