US 9,811,139 B2
Apparatus and method for power supply
Chien-Li Tsai, Taoyuan County (TW)
Assigned to FSP TECHNOLOGY INC., Taoyuan (TW)
Filed by FSP TECHNOLOGY INC., Taoyuan County (TW)
Filed on Dec. 4, 2014, as Appl. No. 14/561,162.
Claims priority of application No. 102147830 A (TW), filed on Dec. 23, 2013.
Prior Publication US 2015/0180278 A1, Jun. 25, 2015
Int. Cl. G06F 1/30 (2006.01); H02J 9/06 (2006.01); H02J 1/10 (2006.01); G06F 1/26 (2006.01)
CPC G06F 1/30 (2013.01) [G06F 1/263 (2013.01); H02J 1/10 (2013.01); H02J 9/061 (2013.01); Y10T 307/344 (2015.04)] 14 Claims
OG exemplary drawing
 
1. An apparatus for power supply, comprising:
a main power circuit, configured to generate a main power, wherein the main power is suitable to be provided to a first load and a second load for use;
an auxiliary power circuit, configured to generate an auxiliary power, wherein the auxiliary power is suitable to be provided to the second load for use;
a power switching control circuit, coupled to the main power circuit and the auxiliary power circuit and configured to detect a voltage difference between the main power and the auxiliary power and determine accordingly whether the apparatus for power supply meets a normal power supply condition, thereby selecting one of the main power and the auxiliary power as a power source of the second load according to the determined result; and
a protection circuit, coupled to the main power circuit and the power switching control circuit, configured to detect an operation state of the main power circuit, and sending an operation suspending signal when the operation state of the main power circuit is abnormal, so that the main power circuit stops generating the main power in response to the operation suspending signal.