| 摘要 |
A method and circuit for reducing power consumption during idle mode to ultra-low levels, such as 1/10th to 1/1000th of active power, is disclosed. An ultra-low idle power supply may include a primary circuit, a secondary circuit, a switch, and a feedback channel. The secondary circuit is in communication with the primary circuit, and in addition provides feedback to the primary circuit via the feedback channel. The switch receives feedback through the feedback channel and controls the state of the primary circuit. The secondary circuit monitors the output power provided to the electronic device. If the electronic device is drawing little or no power from the ultra-low idle power supply, the secondary circuit facilitates disengaging of the primary circuit. By disengaging the primary circuit, the power consumption of the ultra- low idle power supply is reduced. |
