Apparatus and method for supplying power voltages in active and stand-by modes

摘要

A first voltage generator generates an active power voltage at a first power line having a decoupling capacitor coupled thereto. A second voltage generator generates a standby power voltage at a second power line. A switch is coupled between the first and second power lines. The switch is closed and the second voltage generator is disabled for an active mode of operation. The decoupling capacitor speeds up charging of the second power line to the active power voltage.