| 摘要 |
<p>A Universal Serial Bus (USB) battery charger (801) comprising a switching regulator having at least one switching transistor (821), the switching transistor having first input (IN) and a first output (OUT), wherein the first input of the switching transistor is coupled to a USB power source (810); a filter (804) having a first input and a first output, wherein the first input of the filter is coupled to the first output of the switching transistor; and a battery (850) coupled to the first output of the filter, wherein the switching regulator is configured to receive a USB voltage, and in accordance therewith, to generate a switching signal to a control terminal of the switching transistor, and wherein a switching current and switching voltage at the output of the switching transistor are coupled through the filter to generate a filtered current and a filtered voltage to charge the battery and a corresponding method for charging a battery from a Universal Serial Bus (USB).</p> |
