Patent ID: 9209675
Filing Date: 2015-12-08
Classification: H02M,Y02B

Abstract:
1. A device comprising: a first power cell configured to provide a first current in response to an input voltage; a second power cell configured to provide a second current in response to the input voltage; a first driver circuit coupled to the first power cell; a second driver circuit coupled to the second power cell; a boost inductor switch circuit coupled to the first driver circuit and to the second driver circuit, the boost inductor switch circuit configured to enable the first power cell by providing a first enable signal to the first driver circuit, to enable the second power cell by providing a second enable signal to the second driver circuit, and to disable only the first power cell in response to an input current level being below a predetermined level; the first driver circuit to provide a first control signal to the first power cell in response to receiving the first enable signal, the first power cell being activated and deactivated based on a first duty cycle of the first control signal, wherein the first power cell is continuously off in response to not receiving the first control signal from the first driver circuit while the first power cell is disabled; the second driver circuit to provide a second control signal to the second power cell in response to receiving the second enable signal, the second power cell being activated and deactivated based on a second duty cycle of the second control signal; and an output coupled to the first power cell and to the second power cell, the output configured to provide an output voltage based on the first current generated in response to activating and deactivating the first power cell and on the second current generated in response to activating and deactivating the second power cell when the input current level is above the predetermined level, and further configured to provide the output voltage based on the second current when the input current level is below the predetermined level.