Power supply circuit

Abstract

The utility model discloses a power supply circuit which comprises a power supply module and a control module. A first input / output interface of the control module is connected with a control interface of the power module, an output end of the power module is connected with the central processor, and the control module is used for controlling the power module to supply power to the central processor when the power module is in a normal state; wherein the voltage value of the electric signal output by the power module is smaller than a first preset threshold, and the current value of the electric signal is larger than a second preset threshold. The power supply module adopted by the utility model has the characteristic of outputting low voltage and large current, can meet the requirement of core voltage power supply of the central processing unit, and is simple and flexible in power supply circuit, low in defect rate and lower in cost.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic circuits, in particular to a power supply circuit. Background Art

[0002] The Central Processing Unit (CPU) is one of the main components of a computer and is the core component of the computer. The CPU core voltage refers to the voltage required for the CPU to operate normally. This voltage directly affects the CPU's stability and power consumption.

[0003] The core voltage of common CPUs on the market is typically low (generally less than 1V) but draws high current (up to 100A). The conventional power supply method for CPUs uses a multi-phase voltage mode controller paired with an intelligent power stage module. Initialization, setup, and monitoring of the voltage mode controller are performed using a complex programmable logic device (CPLD), i.e., a multi-phase power supply method. However, this approach has the following disadvantages: 1) The circuit is complex, posing the risk of design flaws; 2) a dedicated multi-phase voltage mode controller and intelligent power stage module are required, which places high pressure on product costs; and 3) component interchangeability is poor, making it difficult to flexibly respond to market shortages, leading to delivery difficulties. Utility Model Content

[0004] The utility model provides a power supply circuit to solve the problems caused by the multi-phase power supply mode of CPU in the prior art.

[0005] According to one aspect of the present invention, a power supply circuit is provided, comprising a power supply module and a control module;

[0006] The first input / output interface of the control module is connected to the control interface of the power module, the output end of the power module is connected to the central processing unit, and the control module is used to control the power module to supply power to the central processing unit when the power module is in a normal state;

[0007] The voltage value of the electrical signal output by the power module is smaller than a first preset threshold value, and the current value of the electrical signal is larger than a second preset threshold value.

[0008] Optionally, the power supply circuit further includes a first resistor, which is connected between the first input / output interface of the control module and the control interface of the power supply module.

[0009] Optionally, the second input / output interface of the control module is connected to the output indication interface of the power supply module, the third input / output interface of the control module is connected to the abnormal alarm interface of the power supply module, and the power supply module is further configured to feedback the output signal to the control module through the output indication interface and the abnormal alarm interface.

[0010] Optionally, the power supply circuit further includes a second resistor and a third resistor. The first end of the second resistor is connected to the second input / output interface of the control module, the second end of the second resistor is connected to the output indication interface of the power supply module, the first end of the third resistor is connected to the third input / output interface of the control module, and the second end of the third resistor is connected to the abnormal alarm interface of the power supply module.

[0011] Optionally, the fourth input / output interface of the control module is connected to the data line interface of the power supply module, the fifth input / output interface of the control module is connected to the clock interface of the power supply module, and the control module is further configured to set and read the status parameters of the power supply module.

[0012] Optionally, the power supply circuit further includes a fourth resistor and a fifth resistor. The first end of the fourth resistor is connected to the fourth input / output interface of the control module, the second end of the fourth resistor is connected to the data line interface of the power supply module, the first end of the fifth resistor is connected to the fifth input / output interface of the control module, and the second end of the fifth resistor is connected to the clock interface of the power supply module.

[0013] Optionally, the power supply circuit further includes a first filtering module. The power supply terminal of the power supply module is connected to a first voltage through the first filtering module, and the first filtering module is configured to filter the first power supply.

[0014] Optionally, the power supply circuit further includes a second filtering module. The first end of the second filtering module is connected to the output terminal of the power supply module, the second end of the second filtering module is grounded, and the second filtering module is configured to filter the electrical signal output by the power supply module.

[0015] Optionally, the power supply circuit further includes an impedance module. The communication interface of the power supply module is grounded through the impedance module, and the communication interface is configured to configure the communication address.

[0016] Optionally, the impedance module includes a sixth resistor and a seventh resistor, the communication interface includes a first communication interface and a second communication interface, the first end of the sixth resistor is connected to the first communication interface, the first end of the seventh resistor is connected to the second communication interface, and the second ends of the sixth resistor and the seventh resistor are grounded.

[0017] The technical solution of the embodiment of the present utility model provides a power supply circuit, including a power supply module and a control module; the first input / output interface of the control module is connected to the control interface of the power supply module, the output end of the power supply module is connected to the central processing unit, and the control module is used to control the power supply module to supply power to the central processing unit when the power supply module is in a normal state; wherein, the voltage value of the electrical signal output by the power supply module is less than a first preset threshold, and the current value of the electrical signal is greater than a second preset threshold. The power supply module adopted by the CPU power supply circuit has the characteristic of outputting low voltage and large current, replacing the use of a multi-phase voltage mode controller with an intelligent power stage module, meeting the core voltage power supply function of the central processing unit, and at the same time making the power supply circuit simple and flexible, with a low defect rate and low cost, solving the problems caused by the multi-phase power supply method of the CPU in the prior art.

[0018] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present utility model, nor is it used to limit the scope of the present utility model. Other features of the present utility model will become easily understood through the following description. Brief Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0020] Figure 1 is a schematic structural diagram of a power supply circuit provided by the present utility model;

[0021] Figure 2 is a circuit diagram of a power supply circuit provided by an embodiment of the present utility model;

[0022] Figure 3 is a circuit diagram of another power supply circuit provided by an embodiment of the present utility model. Detailed Description of the Embodiments

[0023] In order to enable those skilled in the art to better understand the solution of the present utility model, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] It should be noted that the terms "first", "second", etc. in the description, claims and above-mentioned drawings of the present utility model are used to distinguish similar objects and do not necessarily have to be used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances so that the embodiments of the present utility model described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0025] The present utility model provides a power supply circuit. Figure 1 is a schematic structural diagram of a power supply circuit provided by the present utility model, as Figure 1 shown, the power supply circuit includes a power supply module 110 and a control module 120; the first input / output interface of the control module 120 is connected to the control interface of the power supply module 110, the output end of the power supply module 110 is connected to the central processing unit, and the control module 120 is used to control the power supply module 110 to supply power to the central processing unit when the power supply module 110 is in a normal state; wherein, the voltage value of the electrical signal output by the power supply module 110 is less than a first preset threshold, and the current value of the electrical signal is greater than a second preset threshold.

[0026] In this embodiment, the power supply module 110 refers to a power supply module with a relatively low output voltage and a relatively large output current, which has the characteristics of high efficiency, stability and safety. The control module 120 is a module for setting and monitoring the power supply module 110, and can control the working mode of the power supply module 120 according to the state of the power supply module 120. For example, the control module 120 can select a programmable logic controller (CPLD). The first preset threshold is generally 1V, and the second preset threshold is generally 100A, that is, the voltage value output by the power supply module 110 is not greater than 1V, and the output current value is not less than 100A, meeting the core voltage requirements of the central processing unit.

[0027] In this embodiment, the power supply terminal of the control module 120 is connected to the first power supply V1, the power supply terminal of the power supply module 110 is connected to the first power supply V1, and the power supply terminal of the central processing unit is connected to the first power supply V1. After the power supply circuit is powered on, the first power supply V1 supplies power to the control module 120 as the starting voltage first. The control module 120 operates and controls the power supply module 110 not to output an electrical signal. The control module 120 performs a status detection on the power supply module 110, and controls the power supply module 110 to output an electrical signal to supply power to the central processing unit when the power supply module 110 is in a normal state. While the voltage output by the power supply circuit meets the core voltage requirements of the central processing unit, the normal operation of the power supply module 110 is ensured.

[0028] The technical solution of this embodiment provides a power supply circuit, including a power module and a control module; the first input / output interface of the control module is connected to the control interface of the power module, and the output end of the power module is connected to the central processing unit. The control module is used to control the power module to supply power to the central processing unit when the power module is in a normal state; wherein, the voltage value of the electrical signal output by the power module is less than a first preset threshold, and the current value of the electrical signal is greater than a second preset threshold. The power module adopted by the CPU power supply circuit has the characteristic of outputting low voltage and large current, replacing the use of a multi-phase voltage mode controller with an intelligent power stage module, meeting the core voltage power supply function of the central processing unit, and at the same time making the power supply circuit simple and flexible, with a low defect rate and low cost, solving the problems caused by the multi-phase power supply method of the CPU in the prior art.

[0029] Figure 2 This is the circuit diagram of a power supply circuit provided by an embodiment of the present invention, as Figure 2 shown, the power supply circuit further includes a first resistor R1, and the first resistor R1 is connected between the first input / output interface GPIO0 of the control module 120 and the control interface CTRL of the power module 110.

[0030] Referring to the above embodiment, after the power supply circuit is powered on, the first power supply V1 is connected to the power supply terminal PWR of the control module 120 as the startup voltage. The control module 120 operates and outputs a low level through the first input / output interface GPIO0, so that the control interface CTRL of the power module 110 outputs a low level. At this time, there is no signal output at the output terminal VOUT of the power module 110. Among them, the first resistor R1 is connected in series between the first input / output interface GPIO0 of the control module 120 and the control interface CTRL of the power module 110, which can improve the integrity of signal transmission.

[0031] Continue to refer to Figure 2 , the second input / output interface GPIO1 of the control module 120 is connected to the output indication interface PG of the power module 110, and the third input / output interface GPIO2 of the control module 120 is connected to the abnormal alarm interface SALERT of the power module 110. The power module 110 is further used to feedback the output signal to the control module 120 through the output indication interface PG and the abnormal alarm interface SALERT.

[0032] Referring to the above embodiments, the control module 120 performs a status detection on the power supply module 110. When the actual output status of the power supply module 110 is normal, the output indication interface PG of the power supply module 110 will output a high-level signal and feedback it to the second input / output interface GPIO1 of the control module 120. At the same time, the abnormal alarm interface SALERT of the power supply module 110 outputs a low-level signal and feedbacks it to the third input / output interface GPIO2 of the control module 120. The first input / output interface GPIO0 of the control module 120 outputs a high-level signal, so that the control interface CTRL of the power supply module 110 outputs a high level. At this time, the electrical signal output by the output end of the power supply module 110 powers the central processing unit.

[0033] Continuing to refer to Figure 2 , the power supply circuit further includes a second resistor R2 and a third resistor R3. The first end of the second resistor R2 is connected to the second input / output interface of the control module 120, the second end of the second resistor R2 is connected to the output indication interface of the power supply module 110, the first end of the third resistor R3 is connected to the third input / output interface of the control module 120, and the second end of the third resistor R3 is connected to the abnormal alarm interface of the power supply module 110. Among them, the second resistor R2 is connected in series between the second input / output interface GPIO1 of the control module 120 and the output indication interface PG of the power supply module 110, and the third resistor R3 is connected in series between the third input / output interface GPIO2 of the control module 120 and the abnormal alarm interface SALERT of the power supply module 110, improving the integrity of signal transmission.

[0034] Continuing to refer to Figure 2 , the fourth input / output interface GPIO3 of the control module 120 is connected to the data line interface SDA of the power supply module 110, the fifth input / output interface GPIO4 of the control module 120 is connected to the clock interface SCL of the power supply module 110, and the control module 120 is further configured to set and read the status parameters of the power supply module 110.

[0035] In this embodiment, the clock interface SCL is the serial clock interface of the I2C bus. The function of the clock interface SCL is to provide a clock signal for synchronizing data transmission between the power supply module 110 and the control module 120. In I2C communication, the data line interface SDA is crucial. Through the data line interface SDA, the power supply module 110 and the control module 120 communicate to achieve data transmission and reception. Referring to the above embodiment, the control module 120 detects the status of the power supply module 110, that is, the control module 120 connects to the data line interface SDA and the clock interface SCL of the power supply module 110 through the fourth input / output interface GPIO3 and the fifth input / output interface GPIO4 to set and read whether the basic settings and status of the power supply module 110 are normal. If the status of the power supply module 110 is normal, the output indication interface PG of the power supply module 110 will output a high-level signal and feedback it to the second input / output interface GPIO1 of the control module 120. At the same time, the abnormal alarm interface SALERT of the power supply module 110 outputs a low-level signal and feedbacks it to the third input / output interface GPIO2 of the control module 120. The first input / output interface GPIO0 of the control module 120 outputs a high-level signal, so that the control interface CTRL of the power supply module 110 outputs a high level. At this time, the output end of the power supply module 110 outputs an electrical signal to supply power to the central processing unit, and the central processing unit starts to run. For example, the voltage of the electrical signal output by the output end of the power supply module 110 is 0.85V. If the central processing unit has an abnormality, resulting in an abnormal output of the power supply module 110, the power supply module 110 will output a high-level signal through the abnormal alarm interface SALERT and feedback it to the third input / output interface GPIO2 of the control module 120. The control module 120 reads the status of the power supply module 110 through the I2C interface (that is, the fourth input / output interface GPIO3 and the fifth input / output interface GPIO4). After determining that an abnormality has occurred, the control module 120 controls the first input / output interface GPIO0 to output a low-level signal. The control interface CTRL of the power supply module receives the low-level signal, so that the output signal of the power supply module 110 is 0, and the power supply module 110 no longer supplies power to the central processing unit, having the function of shutdown protection.

[0036] Continue to refer to Figure 2, the power supply circuit further includes a fourth resistor R4 and a fifth resistor R5; the first end of the fourth resistor R4 is connected to the fourth input / output interface of the control module 120, the second end of the fourth resistor R4 is connected to the data line interface of the power supply module 110, the first end of the fifth resistor R5 is connected to the fifth input / output interface of the control module 120, and the second end of the fifth resistor R5 is connected to the clock interface of the power supply module 110. Among them, the fourth resistor R4 is connected in series between the fourth input / output interface GPIO3 of the control module 120 and the data line interface SDA of the power supply module 110, and the fifth resistor R5 is connected in series between the fifth input / output interface GPIO4 of the control module 120 and the clock interface SCL of the power supply module 110, improving the integrity of signal transmission.

[0037] Figure 3 is the circuit diagram of another power supply circuit provided by an embodiment of the present invention. As Figure 3 shown, the power supply circuit further includes a first filtering module 310. The power supply terminal VIN of the power supply module 110 is connected to the first voltage V1 through the first filtering module 310, and the first filtering module 310 is used to filter the first power supply V1.

[0038] In this embodiment, the first filtering module 310 is a module for filtering the first power supply, which can improve the stability of the electrical signal input to the power supply module 110. The first filtering module 310 includes a first capacitor C1. The power supply module 110 further includes a ground interface GND. The first end of the first capacitor C1 is connected to the power supply terminal of the power supply module 110, and the second end of the first capacitor C1 is connected to the ground interface GND of the power supply module 110.

[0039] Continue to refer to Figure 3 , the power supply circuit further includes a second filtering module 320. The first end of the second filtering module 320 is connected to the output terminal of the power supply module 110, and the second end of the second filtering module 320 is grounded. The second filtering module 320 is used to filter the electrical signal output by the power supply module 110.

[0040] In this embodiment, the second filtering module 320 includes a second capacitor C2. The first end of the second capacitor C2 is connected to the output terminal of the power supply module 110 and the power supply terminal VDD of the central processing unit. The power supply terminal PWR of the central processing unit is connected to the first power supply V1. Among them, the first power supply V1 can be 12V. The second filtering module 320, as a module for filtering the electrical signal output by the power supply module 110, can improve the stability of the power supply electrical signal (i.e., the core voltage) of the central processing unit and improve the stability and power consumption of the central processing unit.

[0041] Continue to refer to Figure 3, the power supply circuit further includes an impedance module 330. The communication interface of the power supply module 110 is grounded through the impedance module 330, and the communication interface is used to configure a communication address. The impedance module 330 is a module that impedes the current in the circuit, which can ensure that the components in the circuit operate within the normal working range and avoid damage to the components due to excessive current. The communication address is information that identifies and locates a communication terminal device and plays an important role in network communication. It can not only ensure the accurate transmission of data but also guarantee the security of the network.

[0042] Specifically, the impedance module 330 includes a sixth resistor R6 and a seventh resistor R7. The communication interface includes a first communication interface SA1 and a second communication interface SA2. The first end of the sixth resistor R6 is connected to the first communication interface, the first end of the seventh resistor R7 is connected to the second communication interface, and the second ends of the sixth resistor R6 and the seventh resistor R7 are grounded.

[0043] In this embodiment, the first communication interface SA1 and the second communication interface SA2 of the power supply module 110 are grounded through the sixth resistor R6 and the seventh resistor R7 respectively, and the device communication address of the I2C (Inter-Integrated Circuit) communication interface of the power supply module 110 is set through the first communication interface SA1 and the second communication interface SA2, ensuring the accuracy of data transmission between the power supply module 110 and the control module 120.

[0044] The power supply circuit provided in this embodiment includes a power supply module and a control module. The first input / output interface of the control module is connected to the control interface of the power supply module, and the output end of the power supply module is connected to the central processing unit. The control module is used to control the power supply module to supply power to the central processing unit when the power supply module is in a normal state. Among them, the voltage value of the electrical signal output by the power supply module is less than a first preset threshold, and the current value of the electrical signal is greater than a second preset threshold. By using the self-integration and universality of the power supply module to replace the use of a multi-phase voltage mode controller with an intelligent power stage module, the power supply function for the core voltage of the central processing unit is realized. The power supply circuit is simple and flexible, has a low defect rate, and a low cost, solving the problems caused by the multi-phase power supply method of the CPU in the prior art.

[0045] It should be understood that the various forms of the processes shown above can be reordered, added, or deleted. For example, the steps described in the present invention can be executed in parallel, sequentially, or in a different order, as long as the desired results of the technical solution of the present invention can be achieved. No limitation is imposed herein.

[0046] The above specific embodiments do not constitute a limitation to the protection scope of the present utility model. Those skilled in the art should understand that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A power supply circuit, characterized in that, It includes a power supply module and a control module; The first input / output interface of the control module is connected to the control interface of the power supply module. The output end of the power supply module is connected to a central processing unit. The control module is used to control the power supply module to supply power to the central processing unit when the power supply module is in a normal state; Among them, the voltage value of the electrical signal output by the power supply module is less than a first preset threshold, and the current value of the electrical signal is greater than a second preset threshold.

2. The power supply circuit according to claim 1, wherein It also includes a first resistor, and the first resistor is connected between the first input / output interface of the control module and the control interface of the power supply module.

3. The power supply circuit according to claim 1, characterized in that The second input / output interface of the control module is connected to the output indication interface of the power supply module. The third input / output interface of the control module is connected to the abnormal alarm interface of the power supply module. The power supply module is also used to feedback the output signal to the control module through the output indication interface and the abnormal alarm interface.

4. The power supply circuit according to claim 3, characterized in that, It also includes a second resistor and a third resistor. The first end of the second resistor is connected to the second input / output interface of the control module, the second end of the second resistor is connected to the output indication interface of the power supply module, the first end of the third resistor is connected to the third input / output interface of the control module, and the second end of the third resistor is connected to the abnormal alarm interface of the power supply module.

5. The power supply circuit according to claim 1, characterized in that The fourth input / output interface of the control module is connected to the data line interface of the power supply module. The fifth input / output interface of the control module is connected to the clock interface of the power supply module. The control module is also used to set and read the status parameters of the power supply module.

6. The power supply circuit according to claim 5, wherein It also includes a fourth resistor and a fifth resistor; the first end of the fourth resistor is connected to the fourth input / output interface of the control module, the second end of the fourth resistor is connected to the data line interface of the power supply module, the first end of the fifth resistor is connected to the fifth input / output interface of the control module, and the second end of the fifth resistor is connected to the clock interface of the power supply module.

7. The power supply circuit according to claim 1, wherein It also includes a first filtering module. The power supply end of the power supply module accesses a first voltage through the first filtering module, and the first filtering module is used to filter the first power supply.

8. The power supply circuit according to claim 1, wherein It also includes a second filtering module. The first end of the second filtering module is connected to the output end of the power supply module, and the second end of the second filtering module is grounded. The second filtering module is used to filter the electrical signal output by the power supply module.

9. The power supply circuit according to claim 1, characterized in that It also includes an impedance module. The communication interface of the power supply module is grounded through the impedance module, and the communication interface is used to configure a communication address.

10. The power supply circuit according to claim 9, wherein, The impedance module includes a sixth resistor and a seventh resistor. The communication interface includes a first communication interface and a second communication interface. The first end of the sixth resistor is connected to the first communication interface, the first end of the seventh resistor is connected to the second communication interface, and the second ends of the sixth resistor and the seventh resistor are grounded.

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