Protection circuit and server system

Abstract

This application discloses a protection circuit applied to a server system, the server system including a motherboard circuit. The protection circuit is connected between at least two input power supplies and the motherboard circuit. The protection circuit includes a comparison module and a protection module. The comparison module is used to compare whether the at least two input power supplies are the same power supply. When the input power supplies are the same power supply, the comparison module outputs a first signal, and the protection module connects the at least two input power supplies to the motherboard circuit according to the first signal. When the input power supplies are different power supplies, the comparison module outputs a second signal, and the protection module disconnects the at least two input power supplies from the motherboard circuit according to the second signal. This application also discloses a server system including the protection circuit.

Description

Technical Field

[0001] This application relates to the field of server technology, and in particular to a protection circuit and server system. Background Technology

[0002] If staff accidentally connect the power supply to the server circuit board incorrectly during server setup, especially by connecting different power supplies to the same connector or mixing up different power supplies, the circuit board may burn out, potentially even damaging the entire server system. Therefore, to effectively prevent such accidents, it is crucial to strengthen the monitoring and protection of power current to safeguard the server system. Summary of the Invention

[0003] This application proposes a protection circuit for a server system, the server system including a motherboard circuit. The protection circuit includes an input power supply, a comparison module, and a protection module. The input power supply includes at least two input power supplies. The comparison module and the protection module are sequentially connected between the at least two input power supplies and the motherboard circuit. The comparison module is used to compare whether the at least two input power supplies are the same power supply. When the at least two input power supplies are the same power supply, the comparison module is used to output a first signal, and the protection module is used to connect the at least two input power supplies to the motherboard circuit according to the first signal. When the at least two input power supplies are different power supplies, the comparison module is used to output a second signal, and the protection module is used to disconnect the at least two input power supplies from the motherboard circuit according to the second signal.

[0004] The comparison module includes a comparator. The at least two input power supplies are used to power the server system. The at least two input power supplies include a first power supply and a second power supply. The first power supply outputs a first current and a first voltage, and the second power supply outputs a second current and a second voltage. The first power supply and the second power supply are electrically connected to the comparator. The comparator receives the first current, the first voltage, the second current, and the second voltage, and determines whether the first power supply and the second power supply are the same power supply by comparing whether the magnitudes of the first current and the second current are equal and whether the magnitudes of the first voltage and the second voltage are equal.

[0005] The protection circuit further includes an analysis module, which processes and analyzes the comparison results obtained by the comparison module. When the first power supply and the second power supply are the same power supply, the comparator outputs a first signal and transmits the first signal to the analysis module. When the analysis module receives the first signal, the analysis module outputs a third signal. When the first power supply and the second power supply are different power supplies, the comparator outputs a second signal and transmits the second signal to the analysis module. When the analysis module receives the second signal, the analysis module outputs a fourth signal.

[0006] The analysis module includes a complex programmable logic device (CPLD) chip; the CPLD chip is electrically connected to the comparator, and the CPLD chip receives and processes the comparison result transmitted by the comparator; when the CPLD chip receives the first signal, the CPLD chip outputs a third signal and transmits the third signal to the protection module; when the CPLD chip receives the second signal, the CPLD chip outputs a fourth signal and transmits the fourth signal to the protection module.

[0007] The protection module is used to perform circuit protection actions based on the received signal; the protection module includes a first switch and a second switch; the first switch and the second switch are electrically connected to the CPLD chip respectively, and are used to perform switching actions based on the signal transmitted from the CPLD chip.

[0008] The first switch is electrically connected to both the first power supply and the motherboard circuit. When the first switch receives the third signal transmitted by the CPLD chip, the first switch turns on, and the first power supply is connected to the motherboard circuit. When the first switch receives the fourth signal transmitted by the CPLD chip, the first switch turns off, and the first power supply is disconnected from the motherboard circuit. The second switch is electrically connected to both the second power supply and the motherboard circuit. When the second switch receives the third signal transmitted by the CPLD chip, the second switch turns on, and the second power supply is connected to the motherboard circuit. When the second switch receives the fourth signal transmitted by the CPLD chip, the second switch turns off, and the second power supply is disconnected from the motherboard circuit.

[0009] When the CPLD chip receives the second signal, the CPLD chip also outputs a fifth signal and a sixth signal to the protection module; the fifth signal is a pair of synchronous serial bus I2C signals, and the sixth signal is an alarm signal.

[0010] The protection module further includes a baseboard management controller (BMC) and an alarm; the BMC and the alarm are electrically connected to the CPLD chip respectively. The BMC receives the fifth signal transmitted from the CPLD chip, and the alarm receives the sixth signal transmitted from the CPLD chip. When the BMC receives the fifth signal transmitted from the CPLD chip, the BMC issues a warning message and uploads the warning message to the BMC website. The alarm includes an alarm indicator light, which illuminates when the alarm receives the sixth signal.

[0011] This application also proposes a server system including the protection circuit.

[0012] The protection circuit proposed in this application has the function of identifying whether the input power supply is connected correctly. First, it compares the input power supply, then analyzes and processes the comparison result, and then executes the circuit protection action based on the processing and analysis result. The whole process is fast and stable, enabling relevant personnel to deal with problems in a timely manner. Attached Figure Description

[0013] Figure 1 This is a circuit block diagram of the protection circuit according to an embodiment of this application;

[0014] Figure 2 This is a circuit diagram of the protection circuit according to an embodiment of this application.

[0015] Explanation of main component symbols

[0016] Server system 100

[0017] Protection Circuit 1

[0018] Comparison Module 10

[0019] Comparator 13

[0020] Analysis Module 20

[0021] CPLD chip 21

[0022] Protection Module 30

[0023] First switch 31

[0024] Second switch 32

[0025] BMC 33

[0026] Alarm 34

[0027] Motherboard circuit 40

[0028] Input power 50

[0029] First power supply 11

[0030] Second power supply 12

[0031] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this application. Detailed Implementation

[0032] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are one module of the embodiments of this application, and not all of the embodiments.

[0033] See Figure 1 and Figure 2 This is a circuit diagram of the protection circuit within the server system 100 according to an embodiment of this application. The protection circuit 1 proposed in this application compares multiple power supplies connected to the server system 100, analyzes and processes the comparison results, and then executes circuit protection actions based on the results of the analysis and processing, thereby protecting the server system 100.

[0034] like Figure 1 The diagram shown is a circuit block diagram of the protection circuit 1 according to an embodiment of this application. The server system 100 includes the protection circuit 1 and the motherboard circuit 40. The protection circuit 1 is electrically connected to the motherboard circuit 40, and the motherboard circuit 40 is used to connect to a power source through the protection circuit 1 to supply power to the server system 100. The protection circuit 1 is used to ensure that the power source connected to the motherboard circuit 40 is correct. In some embodiments, the motherboard circuit 40 includes electronic components, functional modules, integrated circuits, etc., necessary for implementing the functions of the server system 100.

[0035] The protection circuit 1 may include a comparison module 10, an analysis module 20, a protection module 30, and an input power supply 50. The input power supply 50 is electrically connected to the comparison module 10, the comparison module 10 is electrically connected to the analysis module 20, the analysis module 20 is also electrically connected to the protection module 30, and the protection module 30 is electrically connected to the mainboard circuit 40.

[0036] The comparison module 10 is used to compare the power supply in the input power supply 50. (See also...) Figure 2 The input power supply 50 may include at least two input power supplies, and the comparison module 10 includes a comparator 13. The at least two input power supplies can be used to power the server system 100 (e.g., current, voltage). In this embodiment, the at least two input power supplies may include a first power supply 11 and a second power supply 12. The first power supply 11 can output a first current and a first voltage. The second power supply 12 can output a second current and a second voltage. The first power supply 11 and the second power supply 12 are electrically connected to the comparator 13.

[0037] The comparator 13 can receive the first current, the first voltage, the second current, and the second voltage, and by comparing whether the magnitudes of the first current and the second current are equal, and whether the magnitudes of the first voltage and the second voltage are equal, it can determine whether the first power supply 11 and the second power supply 12 are the same power supply. In some embodiments, when the output voltage and current magnitudes of the first power supply 11 and the second power supply 12 are equal, that is, when the first current and the second current are the same magnitude, and the first voltage and the second voltage are the same magnitude, then the first power supply 11 and the second power supply 12 are the same power supply.

[0038] When the first power supply 11 and the second power supply 12 are the same power supply, the comparator 13 outputs a first signal and transmits the first signal to the analysis module 20. When the first power supply 11 and the second power supply 12 are different power supplies, the comparator 13 outputs a second signal that is opposite to the first signal and transmits the second signal to the analysis module 20.

[0039] In some embodiments, the comparator 13 can be a non-inverting proportional comparator. When the first power supply 11 and the second power supply 12 are the same power supply, the comparator 13 outputs 0. When the first power supply 11 and the second power supply 12 are different power supplies, the comparator 13 outputs 1.

[0040] The analysis module 20 is used to process and analyze the comparison results obtained by the comparison module 10. The analysis module 20 may include a Complex Programmable Logic Device (CPLD) chip 21. The CPLD chip 21 is electrically connected to the comparator 13 and is used to receive and process the comparison results transmitted by the comparator 13. For example, when the CPLD chip 21 receives a first signal, it outputs a third signal and transmits it to the protection module 30. When the CPLD chip 21 receives a second signal, it outputs a fourth, fifth, and sixth signal to the protection module 30. In some embodiments, the third and fourth signals may be enable signals, the fifth signal may be a pair of Inter-Integrated Circuit (I2C) signals, and the sixth signal may be an alarm signal.

[0041] The protection module 30 is used to perform circuit protection actions based on the received signal. See also Figure 2 The protection module 30 includes a first switch 31, a second switch 32, a Baseboard Management Controller (BMC) 33, and an alarm 34.

[0042] The first switch 31 and the second switch 32 are electrically connected to the CPLD chip 21, respectively, to perform switching actions according to signals transmitted from the CPLD chip 21. The first switch 31 is also electrically connected to the first power supply 11 and the motherboard circuit 40. When the first switch 31 receives a third signal transmitted from the CPLD chip 21, the first switch 31 opens, and the first power supply 11 is connected to the motherboard circuit 40. When the first switch 31 receives a fourth signal transmitted from the CPLD chip 21, the first switch 31 closes, thus disconnecting the first power supply 11 from the motherboard circuit 40.

[0043] The second switch 32 is also electrically connected to the second power supply 12 and the motherboard circuit 40. When the second switch 32 receives a third signal transmitted by the CPLD chip 21, the second switch 32 turns on, and the second power supply 12 is connected to the motherboard circuit 40. When the second switch 32 receives a fourth signal transmitted by the CPLD chip 21, the second switch 32 turns off, and the second power supply 12 is disconnected from the motherboard circuit 40.

[0044] The BMC33 and the alarm 34 are electrically connected to the CPLD chip 21, respectively. The BMC33 receives the fifth signal transmitted from the CPLD chip 21. The alarm 34 receives the sixth signal transmitted from the CPLD chip 21.

[0045] In some embodiments, when the BMC33 receives the fifth signal from the CPLD chip 21, it can quickly issue a warning message and upload the warning message to the BMC website. Relevant personnel can then obtain the warning message from the BMC website, enabling them to handle the problem in a timely manner.

[0046] The alarm 34 may include an alarm indicator light. When the alarm 34 receives the sixth signal, the alarm indicator light illuminates rapidly, alerting relevant personnel to a power connection error, allowing them to address the problem promptly. In other embodiments, the alarm 34 may also include a speaker or a trigger, which emits an audible alert when the alarm 34 receives the sixth signal, also alerting relevant personnel to a power connection error, enabling them to address the problem promptly.

[0047] In some embodiments, when the server system 100 is powered on, each component in each module of the protection circuit 1 can react quickly and promptly to the power supply and send corresponding signals. Upon detecting a power connection error, the protection circuit 1 can quickly perform corresponding circuit protection actions, enabling relevant personnel to address the problem promptly.

[0048] The protection circuit 1 proposed in this application has the function of identifying whether the input power supply is connected correctly. First, it compares the input power supply, then analyzes and processes the comparison result, and then executes the circuit protection action based on the processing and analysis result. The whole process is fast and stable, enabling relevant personnel to deal with problems in a timely manner.

[0049] Those skilled in the art should recognize that the above embodiments are merely illustrative of this application and are not intended to limit this application. Any appropriate changes and variations made to the above embodiments within the essential spirit and scope of this application should fall within the scope of protection claimed in this application.

Claims

1. A protection circuit applied to a server system, the server system including a motherboard circuit, characterized in that, The protection circuit includes an input power supply, a comparison module, and a protection module. The input power supply includes at least two input power supplies. The comparison module and the protection module are connected sequentially between the at least two input power supplies and the motherboard circuit. The comparison module is used to compare whether the at least two input power supplies are the same power supply. When the at least two input power supplies are the same power supply, the comparison module is used to output a first signal, and the protection module is used to connect the at least two input power supplies to the motherboard circuit according to the first signal; When the at least two input power supplies are different power supplies, the comparison module is used to output a second signal, and the protection module is used to disconnect the at least two input power supplies from the motherboard circuit according to the second signal; The comparison module includes a comparator, and the at least two input power supplies are used to power the server system. The at least two input power supplies include a first power supply and a second power supply. The first power supply outputs a first current and a first voltage, and the second power supply outputs a second current and a second voltage. The first power supply and the second power supply are respectively electrically connected to the comparator. The comparator receives the first current, the first voltage, the second current, and the second voltage, and determines whether the first power supply and the second power supply are the same power supply by comparing whether the magnitudes of the first current and the second current are equal and whether the magnitudes of the first voltage and the second voltage are equal. The comparator is a non-inverting proportional comparator. When the first power supply and the second power supply are the same power supply, the output of the non-inverting proportional comparator is 0. When the first power supply and the second power supply are different power supplies, the output of the non-inverting proportional comparator is 1.

2. The protection circuit as described in claim 1, characterized in that, The protection circuit also includes an analysis module, which is used to process and analyze the comparison results obtained by the comparison module; When the first power supply and the second power supply are the same power supply, the comparator outputs a first signal and transmits the first signal to the analysis module. When the analysis module receives the first signal, the analysis module outputs a third signal. When the first power supply and the second power supply are different power supplies, the comparator outputs a second signal and transmits the second signal to the analysis module. When the analysis module receives the second signal, the analysis module outputs a fourth signal.

3. The protection circuit as described in claim 2, characterized in that, The analysis module includes a CPLD chip; the CPLD chip is electrically connected to the comparator, and the CPLD chip receives the comparison results transmitted by the comparator and processes and analyzes them; When the CPLD chip receives the first signal, the CPLD chip outputs a third signal and transmits the third signal to the protection module; When the CPLD chip receives the second signal, the CPLD chip outputs a fourth signal and transmits the fourth signal to the protection module.

4. The protection circuit as described in claim 3, characterized in that, The protection module is used to perform circuit protection actions based on the received signal; the protection module includes a first switch and a second switch; the first switch and the second switch are electrically connected to the CPLD chip respectively, and are used to perform switching actions based on the signal transmitted from the CPLD chip.

5. The protection circuit as described in claim 4, characterized in that, The first switch is electrically connected to the first power supply and the motherboard circuit respectively. When the first switch receives the third signal transmitted by the CPLD chip, the first switch is turned on, and the first power supply is connected to the motherboard circuit. When the first switch receives the fourth signal transmitted by the CPLD chip, the first switch is turned off, and the first power supply is disconnected from the motherboard circuit. The second switch is electrically connected to the second power supply and the motherboard circuit respectively; when the second switch receives the third signal transmitted by the CPLD chip, the second switch is turned on, and the second power supply is connected to the motherboard circuit. When the second switch receives the fourth signal transmitted by the CPLD chip, the second switch closes, and the second power supply is disconnected from the motherboard circuit.

6. The protection circuit as described in claim 5, characterized in that, When the CPLD chip receives the second signal, the CPLD chip also outputs a fifth signal and a sixth signal to the protection module; the fifth signal is a pair of synchronous serial bus I2C signals, and the sixth signal is an alarm signal.

7. The protection circuit as described in claim 6, characterized in that, The protection module also includes a baseboard management controller (BMC) and an alarm; the BMC and the alarm are electrically connected to the CPLD chip respectively, the BMC receives the fifth signal transmitted from the CPLD chip, and the alarm receives the sixth signal transmitted from the CPLD chip; When the BMC receives the fifth signal from the CPLD chip, the BMC issues a warning message and uploads the warning message to the BMC website. The alarm includes an alarm indicator light, which illuminates when the alarm receives the sixth signal.

8. A server system, characterized in that, The server system includes the protection circuit described in any one of claims 1 to 7.

Images