Patent ID: 9411387
Filing Date: 2016-08-09
CPC Classification: G06F,H02J

Claim Text:
1. A circuit for a switching charger, the circuit comprising: a plurality of input supply nodes, each of the plurality of input supply nodes connectable to a power source; a plurality of charging paths, each of the plurality of charging paths including a middle node connected to a coupling switch and a pass transistor, wherein the coupling switch is configured to activate a corresponding charging path of the plurality of charging paths; and a pre-charging switch coupled to a corresponding middle node of each of the plurality of charging paths, wherein the pass transistor of an activated one of the plurality of charging paths is configured to provide a switching voltage at an input of a charging sub-circuit, and wherein the pre-charging switch is configurable to pre-charge a middle node of a non-activated path to a high voltage to prevent an unwanted high current passing through a body diode of a corresponding pass transistor of the non-activated path.