| 摘要 |
A switched mode power supply for supplying power from a power source to one or more output voltage rails, including: a switching unit configured to receive a source voltage from the power source and to output a switched voltage, the switching unit including: a first switch configured to switch the source voltage to the switched voltage, and configured to be driven by the source voltage; and a second switch connected in parallel with the first switch, the second switch configured to switch the source voltage to the switched voltage, and configured to be driven by an output voltage of one of the output voltage rails. |
