Electric energy sharing circuit

[0026] Please refer to FIG. 3 , which is a block diagram of a power sharing circuit according to a first embodiment of the present invention. In this embodiment, the adjusted performance is illustrated by taking the operating frequency as an example.

[0027] In this example, the computer system 10 includes a power sharing control circuit 100 , a CPU 12 , a GPU 14 , a system power circuit 16 , power circuits 18 and 20 and a cooling module 22 . The system power supply circuit 16 provides the system power supply signal Ps_Sys, the power supply circuits 18 and 20 respectively receive the system power supply signal Ps_Sys, and convert the voltage of the system power supply signal Ps_Sys into a voltage suitable for the CPU 12 and the GPU 14 to generate the power supply signals Ps_CPU and Ps_GPU to are respectively supplied to CPU 12 and GPU 14 to perform operations.

[0028] The CPU 12 has a high-frequency operation mode and a low-frequency operation mode. The CPU 12 can choose t...

[0042] Different from the first embodiment, the reference values ​​Pw_Th1 and Pw_Th2 of this embodiment can be obtained by referring to the temperatures of the CPU 12 and the GPU 14 through a look-up table.

[0043] Please refer to Figure 4 , which shows an example of a look-up table. When the temperature of the CPU 12 and the GPU 14 is between 0°C and 49°C, the reference values ​​Pw_Th1 and Pw_Th2 may be 55W.

[0044] As the temperature of the CPU 12 and the GPU 14 increase, the speed of the fan in the cooling module 22 increases correspondingly. The reference values ​​Pw_Th1 and Pw_Th2 decrease as the temperatures of the CPU 12 and the GPU 14 increase, so as to reduce the allowable heat dissipated by the CPU 12 and the GPU 14 . In this way, the computer system 10 of this embodiment can improve the heat dissipation performance of the cooling module 22 (increase the fan speed) and reduce the heat dissipated by the CPU 12 and the GPU 14 when the temperatures of the CPU 12 and...

[0048] In the first embodiment, if the current operation is dominated by the CPU 12 , the reference value Pw_Th1 is equal to the dominant threshold, and the heat dissipation power threshold Pw_Th2 is the non-dominant threshold. If the operation at this time is dominated by the GPU 14 , the reference value Pw_Th2 is equal to the dominant threshold, and the reference value Pw_Th1 is the non-dominant threshold.

[0049] However, the difference between the third embodiment and the first embodiment is that if the current operation is dominated by the CPU 12 , the reference value Pw_Th1 is equal to the main dominant threshold, and the cooling power threshold Pw_Th2 is the secondary dominant threshold. If the operation at this time is dominated by the GPU 14 , the cooling power threshold Pw_Th2 is equal to the main controlling threshold, and the cooling power threshold Pw_Th1 is the auxiliary controlling threshold.

[0050]The main dominance threshold is equal to the dominance thresh...