Patent ID: 8193780
Filing Date: 2012-06-05
Classification: H02J,Y02B,Y02E

Abstract:
1. A battery charger comprising: a switching regulator having a first input, a first output, and a control input, wherein the first input receives a first input voltage and a first input current, and the first output is coupled to a battery to provide a first output voltage and a first output current; an adjustable current controller having at least one input coupled to sense the first output current, at least one output coupled to the control input of the switching regulator, and a second input coupled to the first input of the switching regulator for detecting changes in the first input current or to the battery for detecting changes in the first output voltage, wherein the adjustable current controller changes the first output current to the battery in response to detecting changes in the first input current or first output voltage, wherein the switching regulator provides the first output current to the battery that is greater than the first input current, and wherein the first output current is reduced, in a current control mode, as the first output voltage on the battery increases.