Apple Inc.

Steve Xing-Fu Zhou

Bharat K Patel

Edward H Frank

Kevin Scott Fetterman

Michelle Rae Goldberg

Manisha P Pandya

Kathleen A Bergeron

Asif Iqbal

Mark K Sin

Paul S Michelsen

Adrian E Sun

Steven Ichung Kuo

Chad O Simpson

Erik A Gutfeldt

John Douglas Field

Harsha Lakshmanan

Kim Phuong T Truong

Deborah Claire Sharrah

Lee M Schaff

Derrick C Lau

The embodiments discussed herein relate to systems, methods, and apparatus for controlling power consumption of a computing device in a standby or sleep mode. During the standby or sleep mode an external device can be plugged into the computing device. The external device can be provided power from a standby power supply until a determination is made as to whether a main power supply is operating. The determination can be based on comparing the output of the main power supply to an output of the standby power supply. If the main power supply is operating, a switch in the computing device can close to allow the main power supply to provide power to the external device. Moreover, in some embodiments, the switch can close based exclusively on a current demand of the external device from the standby power supply.

Reduced energy consumption in a computer system through software and hardware coordinated control of multiple power supplies

One embodiment of a power supply input routing apparatus can include a multilayer printed circuit board configured to accept only an alternating current (AC) line voltage, return and ground signals. The AC power jumper board can advantageously route AC power from one section of the power supply to another without burdening the power supply design with extra layer requirements or negatively increasing power supply area. Embodiments including an electronic device having a power supply as above are also disclosed.

Power supply input routing

Growing community of inventors

San Jose, CA, United States of America

Steve Xing-Fu Zhou