Patent ID: 9109604
Filing Date: 2015-08-18
Classification: F04D,G06F,H05K,Y02D

Abstract:
1. A control circuit set in a server, the control circuit controls a fan to cool an integrated baseboard management controller (iBMC) in the server, the control circuit comprising: a state determination module connected to the iBMC and a power supply unit (PSU) of the server, for determining states of the iBMC and the PSU; wherein when the server is powered off and the iBMC is operating, the state determination module receives a low level signal from the PSU and a low level signal from the iBMC, the state determination module connects the PSU and the fan, such that the fan is operating; when the server and the iBMC are powered off, the state determination module receives a low level signal from the PSU and a high level signal from the iBMC, the state determination module disconnects the PSU from the fan, such that the fan is powered off; and when the server is operating, the state determination module receives a high level signal from the PSU, the state determination module disconnects the PSU from the fan, such that the fan is powered off.