TWI669604B - Electronic system with power source switching mechanism - Google Patents

Abstract

The electronic system of the present invention includes a power supply and an electronic device. The power supply includes at least one first power supply circuit for generating and outputting at least a first voltage. The electronic device includes a processor, a power connector, at least one second power circuit, and at least one first switching circuit. The power connector is used to plug in the power supply. The power connector has at least one first power pin for receiving the at least one first voltage. The at least one second power circuit is configured to generate at least one second voltage. The at least one first switching circuit is coupled to the at least one first power pin, the at least one second power circuit, and the processor. After the power supply is plugged into the power connector of the electronic device, the at least one first switching circuit turns on a power supply path between the at least one first power pin and the processor, and disconnects the at least one second power source A power supply path between the circuit and the processor causes the at least one first voltage to power at least one internal circuit of the processor.

Description

Electronic system with power source switching mechanism

The present invention relates to an electronic system, and more particularly to an electronic system having a power source switching mechanism.

With the development of technology, electronic devices (such as a wide variety of computers) are operating more and more efficiently. In particular, in order to improve the operational efficiency of the electronic device, the computing speed of the processor of the electronic device is bound to increase. Once the speed of the processor is increased, the current required to operate the processor also increases. Therefore, the power supply circuit inside the electronic device must supply a larger current to the processor. As a result, the power supply circuit inside the electronic device will generate more heat energy, which causes the temperature inside the electronic device to rise, which in turn affects the operation efficiency of the electronic device.

In view of this, the present invention provides an electronic system having a power source switching mechanism. The temperature inside the electronic device of the electronic system can be effectively reduced to improve the performance of the electronic device.

The electronic system of the present invention includes a power supply and an electronic device. The power supply includes at least one first power supply circuit for generating and outputting at least a first voltage. The electronic device includes a processor, a power connector, at least one second power circuit, and at least one first switching circuit. The power connector is configured to be plugged into the power supply, wherein the power connector has at least one first power pin for receiving the at least one first voltage. The at least one second power circuit is configured to generate at least one second voltage. The at least one first switching circuit is coupled to the at least one first power pin, the at least one second power circuit, and the processor. After the power supply is plugged into the power connector of the electronic device, the at least one first switching circuit turns on the power supply path between the at least one first power pin and the processor, and disconnects the at least one second power source A power supply path between the circuit and the processor causes the at least one first voltage to power at least one internal circuit of the processor.

Based on the above, the electronic system with the power source switching mechanism proposed by the present invention can switch the power supply source of the processor inside the electronic device from the power circuit inside the electronic device to the power supply after the power supply is plugged into the electronic device. Power circuit. In this way, the power circuit inside the electronic device can be prevented from generating heat due to power supply to the processor, thereby reducing the temperature inside the electronic device and improving the overall performance of the electronic device.

The above described features and advantages of the invention will be apparent from the following description.

In order to make the content of the present invention easier to understand, the following specific embodiments are examples of the invention that can be implemented. In addition, wherever possible, the same elements, components, and steps in the figures and embodiments are used to represent the same or similar components.

Please refer to FIG. 1 , which is a circuit block diagram of an electronic system 100 according to an embodiment of the invention. The electronic system 100 can include a power supply 110 and an electronic device 120, wherein the power supply 110 can be plugged into the electronic device 120 to power the electronic device 120. In an embodiment of the invention, the power supply 110 may be, for example, an adaptor, but the invention is not limited thereto. In an embodiment of the present invention, the electronic device 120 can be, for example, a personal computer (PC), a notebook computer (NB), a workstation (server), or a server (server), etc., but The invention is not limited to this.

The power supply 110 can include at least one first power supply circuit for generating and outputting at least a first voltage. The electronic device 120 can include a processor 121, a power connector 123, at least one second power circuit, and at least one first switching circuit. However, for convenience of description and simplicity of the drawing, in the embodiment of FIG. 1, three first power supply circuits 111, 112, 113, three second power supply circuits 122_1, 122_2, 122_3 and three first switching circuits are used. 124_1, 124_2, and 124_3 are examples. As for the embodiment in which the power supply 110 has other numbers of first power supply circuits, and the electronic device 120 has other embodiments of the second power supply circuit and the first switching circuit, the following description can be used.

As shown in FIG. 1, the first power supply circuits 111, 112, 113 are respectively used to generate first voltages V11, V12, V13. The voltage values of the first voltages V11, V12, and V13 may be the same or may be different from each other depending on actual application or design requirements.

The power connector 123 is used to be plugged into the power supply 110. The power connector 123 has first power pins 123_1, 123_2, 123_3. When the power supply 110 is plugged into the power connector 123, the first power pins 123_1, 123_2, 123_3 can receive the first voltages V11, V12, V13 from the first power circuits 111, 112, 113, respectively.

The second power circuits 122_1, 122_2, and 122_3 are respectively configured to generate the second voltages V21, V22, and V23. The first switching circuit 124_1 is coupled to the first power pin 123_1, the second power circuit 122_1, and the processor 121. The first switching circuit 124_2 is coupled to the first power pin 123_2, the second power circuit 122_2, and the processor 121. The first switching circuit 124_3 is coupled to the first power pin 123_3, the second power circuit 122_3, and the processor 121.

In an embodiment of the invention, the first power supply circuits 111, 112, 113 and the second power supply circuits 122_1, 122_2, 122_3 may be, for example, a DC to DC converter, an AC to DC converter (AC). To DC converter) or Low Dropout Regulator (LDO), but the invention is not limited thereto.

In an embodiment of the present invention, the first switching circuits 124_1, 124_2, and 124_3 may be implemented by using a multiplexer or a transistor switch. For example, the present invention is not limited thereto.

In an embodiment of the invention, the processor 121 can be, for example, an Intel processor or an AMD processor, but the invention is not limited thereto.

In an embodiment of the invention, the power supply 110 can have a plug connector, and the power connector 123 of the electronic device 120 can be, for example, a socket connector. As such, the power supply 110 can be plugged into the power connector 123 (socket connector) of the electronic device 120 through its plug connector, so that the power supply 110 supplies power to the electronic device 120, but the invention is not limited thereto. In another embodiment of the invention, the power supply 110 can have a receptacle connector and the power connector 123 of the electronic device 120 can be, for example, a plug connector. As such, the electronic device 120 can be plugged into the socket connector of the power supply 110 through its power connector 123 (plug connector), so that the power supply 110 supplies power to the electronic device 120.

The operation of the electronic system 100 of FIG. 1 is explained below. After the power supply 110 is plugged into the power connector 123 of the electronic device 120, the first switching circuit 124_1 can turn on the power supply path between the first power pin 123_1 and the processor 121, and disconnect the second power circuit 122_1. A power supply path with the processor 121. As such, the first voltage V11 generated by the power supply 110 directly supplies power to the first internal circuit of the processor 121. In an embodiment of the invention, the first internal circuit may be, for example, a core circuit of the processor 121, but is not limited thereto.

In contrast, if the power supply 110 is not plugged into the power connector 123 of the electronic device 120, the first switching circuit 124_1 disconnects the power supply path between the first power pin 123_1 and the processor 121, and is turned on. A power supply path between the two power supply circuits 122_1 and the processor 121. As such, the first internal circuit of the processor 121 is powered by the second voltage V21 inside the electronic device 120.

Similarly, after the power supply 110 is plugged into the power connector 123 of the electronic device 120, the first switching circuit 124_2 can turn on the power supply path between the first power pin 123_2 and the processor 121, and disconnect the second. A power supply path between the power supply circuit 122_2 and the processor 121. As such, the first voltage V12 generated by the power supply 110 directly supplies power to the second internal circuit of the processor 121. In an embodiment of the invention, the second internal circuit may be, for example, a system agent circuit of the processor 121, but is not limited thereto.

In contrast, if the power supply 110 is not plugged into the power connector 123 of the electronic device 120, the first switching circuit 124_2 disconnects the power supply path between the first power pin 123_2 and the processor 121, and is turned on. A power supply path between the two power supply circuits 122_2 and the processor 121. As such, the second internal circuit of the processor 121 is powered by the second voltage V22 inside the electronic device 120.

And the like, after the power supply 110 is plugged into the power connector 123 of the electronic device 120, the first switching circuit 124_3 can turn on the power supply path between the first power pin 123_3 and the processor 121, and disconnect the first A power supply path between the two power supply circuits 122_3 and the processor 121. As such, the first voltage V13 generated by the power supply 110 directly supplies power to the third internal circuit of the processor 121. In an embodiment of the invention, the third internal circuit may be, for example, a built-in display chip of the processor 121, but is not limited thereto.

In contrast, if the power supply 110 is not plugged into the power connector 123 of the electronic device 120, the first switching circuit 124_3 disconnects the power supply path between the first power pin 123_3 and the processor 121, and is turned on. A power supply path between the two power supply circuits 122_3 and the processor 121. As such, the third internal circuit of the processor 121 is powered by the second voltage V23 inside the electronic device 120.

It can be understood that, by switching the power supply source of the processor 121 of the electronic device 120 from the second power circuit 122_1, 122_2, 122_3 of the electronic device 120 to the first power circuit 111, 112, 113 of the power supply 110, The second power supply circuits 122_1, 122_2, and 122_3 of the electronic device 120 are prevented from generating heat by supplying power to the processor 121, so that the temperature inside the electronic device 120 can be effectively reduced, thereby improving the overall performance of the electronic device 120.

Referring to FIG. 2, FIG. 2 is a circuit block diagram of an electronic system 200 according to another embodiment of the present invention. The electronic system 200 can include a power supply 210 and an electronic device 220, wherein the power supply 210 can be plugged into the electronic device 220 to power the electronic device 220.

The power supply 210 of FIG. 2 is similar to the power supply 110 of FIG. The power supply 210 of FIG. 2 differs from the power supply 110 of FIG. 1 only in that the power supply 210 of FIG. 2 further includes a control circuit 214 and a voltage adjustment circuit 215. The voltage regulating circuit 215 is coupled to the control circuit 214 through the first communication bus BS11. In addition, the voltage regulating circuit 215 is also coupled to the first power circuit 111, 112, 113 and the second communication bus BS12.

Additionally, the electronic device 220 of FIG. 2 is similar to the electronic device 120 of FIG. The difference between the electronic device 220 of FIG. 2 and the electronic device 120 of FIG. 1 is that the power connector 223 of the electronic device 220 of FIG. 2 further has a first communication pin group 123_4 and a second communication pin group 123_5, and the electronic device 220 also includes a voltage regulation circuit 225, a control circuit 226, and a memory 227.

In detail, the voltage adjustment circuit 225, the control circuit 226, and the storage 227 are coupled to the first communication pin group 123_4 through the first communication bus BS21. After the power supply 210 is plugged into the power connector 223 of the electronic device 220, the first communication bus BS11 is coupled to the first communication bus BS 21 through the first communication pin group 123_4.

In addition, the voltage adjustment circuit 225 and the processor 121 are coupled to the second communication pin group 123_5 through the second communication bus BS BS22. The voltage regulating circuit 225 is also coupled to the second power circuits 122_1, 122_2, and 122_3. After the power supply 210 is plugged into the power connector 223 of the electronic device 220, the second communication bus BS12 is coupled to the second communication bus BS 22 through the second communication pin group 123_5.

In an embodiment of the present invention, the first communication busbars BS11 and BS21 may be, for example, an Inter-Integrated Circuit (I ² C) interface bus, and a Serial Peripheral Interface (SPI) bus. , System Management Bus (SMBus) or other similar serial bus, but the invention is not limited thereto.

In an embodiment of the present invention, the processor 121 may be, for example, an Intel processor, and the second communication bus BSs 12 and BS22 may be, for example, a serial voltage identification (SVID) bus, but The invention is not limited to this.

In an embodiment of the present invention, the control circuits 214 and 226 can be, for example, a programmable general purpose or special purpose microprocessor (Microprocessor), a programmable controller, or a special application integrated circuit (Application Specific Integrated Circuit). , ASIC) or other similar elements or combinations of the above elements, but the invention is not limited thereto.

In an embodiment of the invention, the voltage regulating circuits 215, 225 can be implemented using a conventional voltage regulator integrated circuit, but the invention is not limited thereto.

In an embodiment of the invention, the storage 227 can be, for example, a flash memory, various types of read-only memory (ROM) or other similar components or a combination of the above components, but The invention is not limited thereto.

The operation of the electronic system 200 of FIG. 2 is described below. The operations of the first power supply circuits 111, 112, 113, the second power supply circuits 122_1, 122_2, 122_3 and the first switching circuits 124_1, 124_2, 124_3 of FIG. 2 are similar to the first power supply circuits 111, 112, 113, and FIG. For the operation of the two power supply circuits 122_1, 122_2, and 122_3 and the first switching circuits 124_1, 124_2, and 124_3, reference may be made to the related description of FIG. 1 above, and details are not described herein again. The operation of the control circuit 214 and the voltage regulating circuit 215 of the power supply 210 of FIG. 2 and the control circuit 226, the voltage regulating circuit 225, and the memory 227 of the electronic device 220 will be described below.

After the power supply 210 is plugged into the power connector 223 of the electronic device 220, the processor 121 of the electronic device 220 is powered by the first power circuits 111, 112, 113 of the power supply 210. Therefore, the control circuit 214 of the power supply 210 can detect the type of the processor 121 of the electronic device 220 through the first communication pin group 123_4, and generate the first setting signal SS11 to the voltage adjustment circuit 215 of the power supply 210. . The voltage adjustment circuit 215 can generate the control signals CS11, CS12, and CS13 according to the first setting signal SS11, so that the first power supply circuits 111, 112, and 113 generate the first type corresponding to the type of the processor 121 according to the control signals CS11, CS12, and CS13, respectively. Voltages V11, V12, V13.

In an embodiment of the invention, the storage 227 can be used to store type information of the processor 121. In this way, the control circuit 214 can read the contents of the storage unit 227 through the first communication bus bar BS11, the first communication pin group 123_4, and the first communication bus bar BS21 to obtain the type information of the processor 121.

For example, assume that the processor 121 is an Intel SkyLake processor, and the first voltage V11 generated by the first power circuit 111 is a core voltage for supplying the processor 121. Therefore, the control circuit 214 can determine the type of the processor 121 as an Intel SkyLake processor by reading the contents of the storage 227, and accordingly set the voltage adjustment circuit 215. As such, the voltage regulating circuit 215 can generate the control signal CS11 to control the first power circuit 111 to provide a first voltage V11 (ie, 1.0 volts) that conforms to the core voltage specification of the Intel SkyLake processor.

In addition, after the power supply 210 is plugged into the power connector 223 of the electronic device 220, the voltage adjustment circuit 215 of the power supply 210 can pass through the second communication bus BS12, the second communication pin group 123_5, and the The second communication bus BS22 communicates with the processor 121 to obtain the operating state of the processor 121. The voltage adjustment circuit 215 can adjust the control signals CS11, CS12, and CS13 according to the operating state of the processor 121, so that the first power supply circuits 111, 112, and 113 adjust the first voltages V11, V12, and V13 according to the control signals CS11, CS12, and CS13, respectively. Voltage value.

For example, the voltage adjustment circuit 215 can dynamically adjust the control signals CS11, CS12, and CS13 according to the operating frequency or the load state of the processor 121, so that the first power supply circuits 111, 112, and 113 dynamically adjust the first voltage V11, The voltage values of V12 and V13 are required to provide different voltages of the processor 121 under different operating states.

In contrast, if the power supply 210 is not plugged into the power connector 223 of the electronic device 220, the processor 121 of the electronic device 220 is powered by the second power circuits 122_1, 122_2, and 122_3 of the electronic device 220. Therefore, the control circuit 226 of the electronic device 220 can read the content of the storage unit 227 through the first communication bus BS 21 to obtain the type information of the processor 121, and accordingly generate the first setting signal SS21 to the voltage adjusting circuit 225. The voltage adjustment circuit 225 can generate the control signals CS21, CS22, CS23 according to the first setting signal SS21, so that the second power supply circuits 122_1, 122_2, 122_3 generate the second type corresponding to the type of the processor 121 according to the control signals CS21, CS22, CS23, respectively. Voltages V21, V22, V23.

In addition, if the power supply 210 is not plugged into the power connector 223 of the electronic device 220, the voltage adjustment circuit 225 of the electronic device 220 can communicate with the processor 121 through the second communication bus BS 22 to obtain The operational status of the processor 121. The voltage adjustment circuit 225 can adjust the control signals CS21, CS22, and CS23 according to the operating state of the processor 121, so that the second power supply circuits 122_1, 122_2, and 122_3 adjust the second voltages V21, V22, and V23 according to the control signals CS21, CS22, and CS23, respectively. Voltage value.

Please refer to FIG. 3. FIG. 3 is a circuit block diagram of an electronic system 300 according to another embodiment of the present invention. The electronic system 300 can include a power supply 310 and an electronic device 320, wherein the power supply 310 can be plugged into the electronic device 320 to power the electronic device 320.

The power supply 310 of FIG. 3 is similar to the power supply 210 of FIG. The power supply 310 of FIG. 3 differs from the power supply 210 of FIG. 2 only in that the power supply 310 of FIG. 3 further includes a third power supply circuit 313 and at least a fifth power supply circuit. Additionally, the electronic device 320 of FIG. 3 is similar to the electronic device 220 of FIG. The difference between the electronic device 320 of FIG. 3 and the electronic device 220 of FIG. 2 is that the power connector 323 of the electronic device 320 of FIG. 3 further has a second power pin 323_4 and at least a third power pin, and the electronic device 320 Also included is a dynamic random access memory 329, a second switching circuit 325, a fourth power supply circuit 324, at least a third switching circuit, and at least a sixth power supply circuit. However, for convenience of description and simplicity of the drawing, in the embodiment of FIG. 3, two fifth power supply circuits 317, 318, two third power supply pins 323_7, 323_8, and two sixth power supply circuits 326_1, 326_2 are used. And the two third switching circuits 327_1, 327_2 are illustrated as an example. As for other implementations, the following instructions can be used, and so on.

As shown in FIG. 3, the third power circuit 313 is coupled to the control circuit 214 through the first communication bus BS11 and used to generate the third voltage V3. The fifth power supply circuits 317, 318 are respectively configured to generate fifth voltages V51, V52. After the power supply 310 is plugged into the power connector 323 of the electronic device 320, the second power pin 323_4 and the third power pin 323_7, 323_8 of the power connector 323 are respectively available from the third power circuit 313 and the fifth power source. The circuits 317, 318 receive the third voltage V3 and the fifth voltages V51, V52.

In addition, the fourth power circuit 324 is coupled to the control circuit 226 through the first communication bus BS21. The fourth power circuit 324 is configured to generate a fourth voltage V4. The second switching circuit 325 is coupled to the second power pin 323_4, the fourth power circuit 324, the processor 121, and the dynamic random access memory 329. The sixth power supply circuits 326_1, 326_2 are respectively used to generate the sixth voltages V61, V62. The third switching circuit 327_1 is coupled to the third power pin 323_7, the sixth power circuit 326_1, and the processor 121. The third switching circuit 327_2 is coupled to the third power pin 323_8, the sixth power circuit 326_2, and the processor 121.

In an embodiment of the invention, the DRAM 329 can be, for example, a third generation double data rate synchronous dynamic random access memory (DDR3), DDR3L, LPDDR3 or fourth generation double data rate synchronization dynamics. Random access memory (DDR4), LPDDR4, but the invention is not limited thereto.

In an embodiment of the present invention, the third power supply circuit 313, the fourth power supply circuit 324, the fifth power supply circuit 317, 318, and the sixth power supply circuits 326_1, 326_2 may be, for example, a DC to DC converter. , AC to DC converter or Low Dropout Regulator (LDO), but the invention is not limited thereto.

In an embodiment of the present invention, the second switching circuit 325 and the third switching circuit 327_1, 327_2 may be implemented by using a multiplexer or a transistor switch, but the invention is not limited thereto.

The operation of the electronic system 300 of FIG. 3 is explained below. The operations of the first power supply circuits 111, 112, 113, the second power supply circuits 122_1, 122_2, 122_3 and the first switching circuits 124_1, 124_2, 124_3 of FIG. 3 are similar to the first power supply circuits 111, 112, 113 of FIG. 1, respectively. For the operation of the second power supply circuits 122_1, 122_2, and 122_3 and the first switching circuits 124_1, 124_2, and 124_3, reference may be made to the related description of FIG. 1 , and details are not described herein again. In addition, the operations of the control circuit 214 and the voltage regulating circuit 215 of the power supply 310 of FIG. 3 and the control circuit 226, the voltage regulating circuit 225, and the storage 227 of the electronic device 320 are similar to the control of the power supply 210 of FIG. 2, respectively. The operation of the circuit 214 and the voltage regulating circuit 215 and the control circuit 226, the voltage regulating circuit 225, and the memory 227 of the electronic device 220 can be referred to the related description of FIG. 2 above. Hereinafter, the third power supply circuit 313 and the fifth power supply circuits 317 and 318 of the power supply 310 of FIG. 3 and the second switching circuit 325, the fourth power supply circuit 324, the third switching circuits 327_1, 327_2, and the sixth of the electronic device 320 are explained. The operation of the power circuits 326_1, 326_2.

After the power supply 310 is plugged into the power connector 323 of the electronic device 320, the second switching circuit 325 turns on the power supply path between the second power pin 323_4 and the processor 121 and the dynamic random access memory 329, and The power supply path between the fourth power supply circuit 324 and the processor 121 and the dynamic random access memory 329 is disconnected. As a result, the third voltage V3 generated by the power supply 310 directly supplies power to the memory interface circuit of the processor 121 and the dynamic random access memory 329. In an embodiment of the invention, the processor 121 can access the content of the dynamic random access memory 329 through its memory interface circuit.

In an embodiment of the present invention, after the power supply 310 is plugged into the power connector 323 of the electronic device 320, the control circuit 214 of the power supply 310 can detect dynamic random access through the first communication pin group 123_4. The type of the memory 329 is generated to generate the second setting signal SS12 to the third power supply circuit 313, so that the third power supply circuit 313 generates the third voltage corresponding to the type of the dynamic random access memory 329 according to the second setting signal SS12. V3.

In an embodiment of the invention, the storage 227 can be used to store type information of the dynamic random access memory 329. In this way, the control circuit 214 can read the contents of the storage 227 through the first communication pin group 123_4 to obtain the type information of the dynamic random access memory 329.

For example, assume that the dynamic random access memory 329 is DDR3L. Therefore, the control circuit 214 can determine the type of the dynamic random access memory 329 as DDR3L by reading the contents of the memory 227, and accordingly set the third power supply circuit 313. As such, the third power supply circuit 313 can generate a third voltage V3 (ie, 1.35 volts) that conforms to the voltage specification of DDR3L.

In contrast, if the power supply 310 is not plugged into the power connector 323 of the electronic device 320, the second switching circuit 325 is disconnected between the second power pin 323_4 and the processor 121 and the dynamic random access memory 329. The power supply path and the power supply path between the fourth power circuit 324 and the processor 121 and the dynamic random access memory 329 are turned on. In this way, the memory interface circuit of the processor 121 and the dynamic random access memory 329 are powered by the fourth voltage V4 inside the electronic device 320.

In an embodiment of the present invention, in a case where the power supply 310 is not plugged into the power connector 323 of the electronic device 320, the control circuit 226 of the electronic device 320 can read the storage through the first communication bus BS21. The content of 227 is used to obtain the type of the dynamic random access memory 329, and accordingly, the second setting signal SS22 is generated to the fourth power supply circuit 324, so that the fourth power supply circuit 324 generates the dynamic random memory according to the second setting signal SS22. A fourth voltage V4 of the type of the memory 329 is taken.

It can be understood that the power source of the memory interface circuit of the processor 121 of the electronic device 320 and the dynamic random access memory 329 is switched from the fourth power circuit 324 of the electronic device 320 to the third power source 310. The power supply circuit 313 can prevent the fourth power supply circuit 324 of the electronic device 320 from generating heat due to power supply to the memory interface circuit of the processor 121 and the dynamic random access memory 329, thereby effectively reducing the temperature inside the electronic device 320, thereby improving The overall performance of the electronic device 320.

In addition, after the power supply 310 is plugged into the power connector 323 of the electronic device 320, the third switching circuit 327_1 turns on the power supply path between the third power pin 323_7 and the processor 121, and disconnects the sixth power source. A power supply path between the circuit 326_1 and the processor 121. In this way, the fifth voltage V51 generated by the power supply 310 directly supplies power to the first input/output interface circuit of the processor 121. In an embodiment of the invention, the first input/output interface circuit of the processor 121 may be, for example, a 1.8 volt input/output interface circuit, but is not limited thereto.

Similarly, after the power supply 310 is plugged into the power connector 323 of the electronic device 320, the third switching circuit 327_2 will turn on the power supply path between the third power pin 323_8 and the processor 121, and disconnect the sixth. A power supply path between the power supply circuit 326_2 and the processor 121. In this way, the fifth voltage V52 generated by the power supply 310 directly supplies power to the second input/output interface circuit of the processor 121. In an embodiment of the invention, the second input/output interface circuit of the processor 121 may be, for example, a 3.3 volt input/output interface circuit, but is not limited thereto.

In contrast, if the power supply 310 is not plugged into the power connector 323 of the electronic device 320, the third switching circuit 327_1 disconnects the power supply path between the third power pin 323_7 and the processor 121, and is turned on. A power supply path between the six power supply circuits 326_1 and the processor 121. In this way, the first input/output interface circuit of the processor 121 is powered by the sixth voltage V61 inside the electronic device 320.

Similarly, if the power supply 310 is not plugged into the power connector 323 of the electronic device 320, the third switching circuit 327_2 disconnects the power supply path between the third power pin 323_8 and the processor 121, and is turned on. A power supply path between the six power supply circuits 326_2 and the processor 121. In this way, the second input/output interface circuit of the processor 121 is powered by the sixth voltage V62 inside the electronic device 320.

It can be understood that the power supply source of the first input/output interface circuit and the second input/output interface circuit of the processor 121 of the electronic device 320 is switched from the sixth power supply circuit 326_1, 326_2 of the electronic device 320 to the power supply 310. The fifth power supply circuit 317, 318 can prevent the sixth power supply circuit 326_1, 326_2 of the electronic device 320 from generating heat due to power supply to the processor 121, thereby effectively reducing the temperature inside the electronic device 320, thereby improving the overall performance of the electronic device 320. .

In summary, the electronic system with the power source switching mechanism proposed in the embodiment of the present invention can switch the power supply of the processor and the dynamic random access memory in the electronic device from the power circuit inside the electronic device to the power supply. Power circuit of the device. In this way, the power circuit inside the electronic device can be prevented from generating heat due to power supply to the processor and the dynamic random access memory, thereby reducing the temperature inside the electronic device and improving the overall performance of the electronic device.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and any one of ordinary skill in the art can make some changes and refinements without departing from the spirit and scope of the present invention. The scope of the invention is defined by the scope of the appended claims.

100, 200, 300‧‧‧ electronic systems

110, 210, 310‧‧‧ power supply

111, 112, 113‧‧‧ first power circuit

120, 220, 320‧‧‧ electronic devices

121‧‧‧ processor

122_1, 122_2, 122_3‧‧‧ second power circuit

123, 223, 323‧‧‧ power connectors

123_1, 123_2, 123_3‧‧‧ first power pin

123_4‧‧‧First communication pin set

123_5‧‧‧Second communication pin set

124_1, 124_2, 124_3‧‧‧ first switching circuit

214, 226‧‧‧ control circuit

215, 225‧‧‧ voltage regulation circuit

227‧‧‧Storage 313‧‧‧ Third power circuit

317, 318‧‧‧ fifth power circuit

323_4‧‧‧Second power pin

323_7, 323_8‧‧‧ third power pin

324‧‧‧ fourth power circuit

325‧‧‧Second switching circuit

326_1, 326_2‧‧‧ sixth power circuit

327_1, 327_2‧‧‧ third switching circuit

329‧‧‧Dynamic random access memory

BS11, BS21‧‧‧ first communication bus

BS12, BS22‧‧‧Second communication bus

CS11, CS12, CS13, CS21, CS22, CS23‧‧‧ control signals

SS11, SS21‧‧‧ first setting signal

SS12, SS22‧‧‧ second setting signal

V11, V12, V13‧‧‧ first voltage

V21, V22, V23‧‧‧ second voltage

V3‧‧‧ third voltage

V4‧‧‧fourth voltage

V51, V52‧‧‧ fifth voltage

V61, V62‧‧‧ sixth voltage

FIG. 1 is a circuit block diagram of an electronic system according to an embodiment of the invention. 2 is a circuit block diagram of an electronic system according to another embodiment of the invention. FIG. 3 is a circuit block diagram of an electronic system according to another embodiment of the invention.

Claims (10)

An electronic system having a power source switching mechanism, comprising: a power supply, comprising at least one first power circuit for generating and outputting at least a first voltage; and an electronic device comprising: a processor; a power connection The power connector has at least one first power pin for receiving the at least one first voltage, and at least one second power circuit for generating at least one second voltage And at least one first switching circuit coupled to the at least one first power pin, the at least one second power circuit, and the processor, wherein after the power supply is plugged into the power connector of the electronic device The at least one first switching circuit turns on a power supply path between the at least one first power pin and the processor, and disconnects a power supply path between the at least one second power circuit and the processor, such that The at least one first voltage powers at least one internal circuit of the processor. The electronic system of claim 1, wherein the at least one first switching circuit disconnects the at least one first power connection if the power supply is not plugged into the power connector of the electronic device a power supply path between the foot and the processor, and conducting a power supply path between the at least one second power circuit and the processor, such that the at least one second voltage powers the at least one internal circuit of the processor . The electronic system of claim 1, wherein the power connector further has a first communication pin set, and the power supply further comprises: a control circuit; and a voltage regulating circuit coupled to the control The circuit and the at least one first power supply circuit, wherein after the power supply is plugged into the power connector of the electronic device, the control circuit detects the type of the processor through the first communication pin group, and according to Generating a first setting signal to the voltage regulating circuit, and the voltage adjusting circuit generates at least one control signal according to the first setting signal, so that the at least one first power circuit generates a corresponding to the processor according to the at least one control signal. The at least one first voltage of the type. The electronic system of claim 3, wherein the power connector further has a second communication pin set coupled to the processor, wherein the power supply is plugged into the power connection of the electronic device After the voltage adjustment circuit obtains the operating state of the processor through the second communication pin group, and adjusts the at least one control signal according to the operating state of the processor, so that the at least one first power circuit is configured according to the at least one A control signal adjusts a voltage value of the at least one first voltage. The electronic system of claim 3, wherein the power supply further includes a third power circuit for generating a third voltage, wherein the power connector further has a second power pin for Receiving the third voltage, wherein the electronic device further comprises: a dynamic random access memory coupled to the processor; a fourth power circuit for generating a fourth voltage; and a second switching circuit coupled The second power pin, the fourth power circuit, the processor, and the dynamic random access memory, wherein the second switch circuit is turned on after the power supply is plugged into the power connector of the electronic device a power supply path between the second power pin and the processor and the DRAM, and disconnecting the power supply between the fourth power circuit and the processor and the DRAM The path causes the third voltage to supply power to a memory interface circuit of the processor and the dynamic random access memory. The electronic system of claim 5, wherein the second switching circuit disconnects the second power pin and the processing if the power supply is not plugged into the power connector of the electronic device a power supply path between the device and the DRAM, and turning on a power supply path between the fourth power circuit and the processor and the DRAM, causing the fourth voltage to be processed The memory interface circuit of the device and the dynamic random access memory are powered. The electronic system of claim 5, wherein after the power supply is plugged into the power connector of the electronic device, the control circuit detects the dynamic random memory through the first communication pin group. Taking a type of the memory, and generating a second setting signal to the third power circuit, so that the third power circuit generates the type corresponding to the type of the dynamic random access memory according to the second setting signal Three voltages. The electronic system of claim 7, wherein the electronic device further comprises: a storage coupled to the first communication pin set for storing the type of information of the processor and the dynamic random storage Taking the information of the type of the memory, wherein the control circuit reads the content of the memory through the first communication pin group to obtain the type information of the processor and the type of the dynamic random access memory. Information. The electronic system of claim 5, wherein the power supply further comprises at least a fifth power circuit for generating at least a fifth voltage, wherein the power connector further has at least one third power pin The electronic device further includes: at least one sixth power circuit for generating at least a sixth voltage; and at least one third switching circuit coupled to the at least one third power source a pin, the at least one sixth power circuit, and the processor, wherein the at least one third switching circuit turns on the at least one third power pin after the power supply is plugged into the power connector of the electronic device And a power supply path between the processor and the power supply path between the at least one sixth power circuit and the processor, causing the at least one fifth voltage to input at least one input/output interface circuit of the processor powered by. The electronic system of claim 9, wherein the at least one third switching circuit disconnects the at least one third power connection if the power supply is not plugged into the power connector of the electronic device a power supply path between the foot and the processor, and turning on a power supply path between the at least one sixth power circuit and the processor, so that the at least one sixth voltage is at least one input/output interface circuit of the processor powered by.