Power supply circuit and system based on TLVR inductor

Abstract

The utility model provides a power supply circuit and system based on a TLVR inductor, and relates to the field of computers, and the circuit comprises a PWM controller, a TLVR inductor circuit, a compensation inductor, an input capacitor, and an output capacitor. The TLVR inductance circuit comprises a first input end, a second input end, a first output end, a second output end and a third output end; the first input end is connected with an input power supply and one end of the input capacitor, the second input end is connected with the PWM controller, the first output end is connected with one end of the compensation inductor, and the second output end is connected with one end of the output capacitor; the other end of the input capacitor, the other end of the compensation inductor, the other end of the output capacitor and the third output end are grounded. According to the utility model, the TLVR inductance circuit is utilized to replace a large-capacity capacitance circuit, so that the response speed when the current of the load equipment fluctuates can be improved, and the installation area and cost of the circuit are reduced.

Description

Technical Field

[0001] This utility model relates to the field of computer technology, and in particular to a power supply circuit and system based on TLVR inductors. Background Technology

[0002] With the booming development of computationally intensive applications such as artificial intelligence and big data analytics, the amount of data transmitted over the internet is constantly increasing, leading to a growing demand for information processing in data centers. This is in response to the need to utilize big data, the Internet of Things (IoT), and other data sources to support the development of technologies like AI and digital transformation. These systems require powerful computing capabilities to process massive amounts of data, optimize complex structures, and enable rapid model iteration and real-time applications.

[0003] Traditional inductor designs in CPU and GPU power supplies often fail to adjust current output promptly under rapidly changing loads due to their inherent physical characteristics, resulting in insufficient transient response. This not only affects the overall system performance but can also lead to voltage fluctuations, thereby impacting calculation accuracy.

[0004] To compensate for this deficiency, a large number of large capacitors are typically added to the power supply line. The rapid charging and discharging characteristics of the capacitors smooth current fluctuations and ensure voltage stability. However, while using large-capacity external capacitors can suppress voltage fluctuations under high-current loads to some extent, it increases the installation area and capacitor costs. Utility Model Content

[0005] The purpose of this invention is to provide a power supply circuit and system based on TLVR inductors. By using TLVR inductor circuits to replace large-capacity capacitor circuits, the response speed to current fluctuations in load devices can be improved, and the installation area and cost of the circuit can be reduced.

[0006] In a first aspect, this utility model provides a power supply circuit based on a TLVR inductor, comprising: a PWM controller, a TLVR inductor circuit, a compensation inductor, an input capacitor, and an output capacitor;

[0007] The TLVR inductor circuit includes a first input terminal, a second input terminal, a first output terminal, a second output terminal, and a third output terminal. The first input terminal is connected to one end of the input power supply and one end of the input capacitor, respectively. The second input terminal is connected to the PWM controller. The first output terminal is connected to one end of the compensation inductor. The second output terminal is connected to one end of the output capacitor. The second output terminal serves as the output terminal of the TLVR inductor-based power supply circuit and is used to supply power to the load device.

[0008] The other end of the input capacitor, the other end of the compensation inductor, the other end of the output capacitor, and the third output terminal are grounded.

[0009] In an optional implementation, the TLVR inductor circuit includes three inductor branches, namely a first inductor branch, a second inductor branch, and a third inductor branch;

[0010] The inductor branch includes a first branch input terminal, a second branch input terminal, a first branch output terminal, a second branch output terminal, and a third branch output terminal;

[0011] The first branch input terminal of the first inductor branch, the first branch input terminal of the second inductor branch, and the first branch input terminal of the third inductor branch are connected in parallel to the first input terminal;

[0012] The second branch output terminal of the first inductor branch, the second branch output terminal of the second inductor branch, and the second branch output terminal of the third inductor branch are connected in parallel to the second output terminal;

[0013] The second branch input terminal of the first inductor branch, the second branch input terminal of the second inductor branch, and the second branch input terminal of the third inductor branch are connected in parallel to the second input terminal;

[0014] The first branch output terminal of the first inductor branch is connected to the first output terminal, the first branch output terminal of the second inductor branch is connected to the third branch output terminal of the first inductor branch, the first branch output terminal of the third inductor branch is connected to the third branch output terminal of the second inductor branch, and the third branch output terminal of the third inductor branch is grounded.

[0015] In an optional implementation, the inductor branch includes a power converter and a TLVR inductor and a main inductor;

[0016] The first input terminal of the power converter is connected to the first branch input terminal, the second input terminal of the power converter is connected to the second branch input terminal, the output terminal of the power converter is connected to the second inductor input terminal of the TLVR inductor, the first inductor input terminal of the TLVR inductor is connected to the third branch output terminal, the first inductor output terminal of the TLVR inductor is connected to the first branch output terminal, and the second inductor output terminal of the TLVR inductor is connected to the second branch output terminal.

[0017] One end of the main inductor is connected to the second inductor input terminal of the TLVR inductor, and the other end of the main inductor is connected to the second inductor output terminal of the TLVR inductor.

[0018] In an optional embodiment, the TLVR inductor includes a first coil and a second coil, which are magnetically coupled together. The input terminal of the first coil is connected to the first inductor input terminal of the TLVR inductor, the output terminal of the first coil is connected to the first inductor output terminal of the TLVR inductor, the input terminal of the second coil is connected to the second inductor input terminal of the TLVR inductor, and the output terminal of the second coil is connected to the second inductor output terminal of the TLVR inductor.

[0019] In an optional implementation, the power converter further includes a grounding interface for grounding.

[0020] In an optional implementation, the PWM controller includes a power supply interface for connecting to an external power source.

[0021] In an optional implementation, the PWM controller further includes a feedback interface connected to the second output terminal.

[0022] In an optional implementation, the load device includes any one of a processor, GPU, storage device, Ethernet transceiver, optoelectronic transceiver, cooling fan, and accelerator.

[0023] In an optional implementation, the input power supply is a 12V power supply.

[0024] Secondly, this utility model provides a power supply system based on a TLVR inductor, including at least one power supply circuit based on a TLVR inductor as described in any of the foregoing embodiments; the circuit input terminals of each power supply circuit based on a TLVR inductor are connected in parallel to an input power supply, and the circuit output terminals of each power supply circuit based on a TLVR inductor are connected to a load device.

[0025] The present invention provides the following beneficial effects:

[0026] This invention provides a power supply circuit and system based on a TLVR inductor, including a PWM controller, a TLVR inductor circuit, a compensation inductor, an input capacitor, and an output capacitor. By using a TLVR inductor circuit to replace a large-capacity capacitor circuit, the response speed to current fluctuations in the load device can be improved, and the installation area and cost of the circuit can be reduced.

[0027] Other features and advantages of this disclosure will be set forth in the following description, or some features and advantages may be inferred from the description or determined without doubt, or may be learned by practicing the techniques described above.

[0028] To make the above-mentioned objects, features and advantages of this disclosure more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0029] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0030] Figure 1 A structural diagram of a power supply circuit based on a TLVR inductor provided for an embodiment of this utility model;

[0031] Figure 2 A structural diagram of another power supply circuit based on a TLVR inductor provided for an embodiment of this utility model;

[0032] Figure 3 This is a structural diagram of a power supply system based on a TLVR inductor, provided for an embodiment of the present invention. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0034] Traditional inductor designs in CPU and GPU power supplies, due to their inherent physical characteristics, often fail to adjust current output promptly when faced with rapidly changing loads, resulting in insufficient transient response speed. This not only affects the overall system performance but can also lead to voltage fluctuations, thereby impacting computational accuracy. To compensate for this deficiency, engineers have had to incorporate numerous large capacitors into the power supply lines, leveraging the rapid charging and discharging characteristics of capacitors to smooth current fluctuations and ensure voltage stability. Furthermore, using large-capacity external capacitors can suppress voltage fluctuations in high-current applications to some extent, but this increases installation space and capacitor costs.

[0035] Based on this, the present invention provides a power supply circuit and system based on a TLVR inductor, including a PWM controller, a TLVR inductor circuit, a compensation inductor, an input capacitor, and an output capacitor. The TLVR inductor circuit includes a first input terminal, a second input terminal, a first output terminal, a second output terminal, and a third output terminal. The first input terminal is connected to the input power supply and one end of the input capacitor, respectively. The second input terminal is connected to the PWM controller. The first output terminal is connected to one end of the compensation inductor, and the second output terminal is connected to one end of the output capacitor. The other ends of the input capacitor, the compensation inductor, the output capacitor, and the third output terminal are grounded. By using a TLVR inductor circuit instead of a large-capacity capacitor circuit, the response speed to current fluctuations in the load device can be improved, and the installation area and cost of the circuit can be reduced.

[0036] In the description of this utility model, it should be noted that the terms "first", "second", "third", etc. are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance.

[0037] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0038] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0039] Example 1

[0040] This utility model embodiment provides a power supply circuit based on a TLVR inductor. Figure 1 This is a structural diagram of a power supply circuit based on a TLVR inductor, provided for an embodiment of this utility model. (See diagram for example.) Figure 1 As shown, the power supply circuit based on TLVR inductor may include the following structure: PWM controller, TLVR inductor circuit, compensation inductor, input capacitor and output capacitor;

[0041] The TLVR inductor circuit includes a first input terminal, a second input terminal, a first output terminal, a second output terminal, and a third output terminal. The first input terminal is connected to one end of the input power supply and one end of the input capacitor, respectively. The second input terminal is connected to the PWM controller. The first output terminal is connected to one end of the compensation inductor. The second output terminal is connected to one end of the output capacitor. The second output terminal serves as the output terminal of the TLVR inductor-based power supply circuit and is used to supply power to the load device.

[0042] The other end of the input capacitor, the other end of the compensation inductor, the other end of the output capacitor, and the third output terminal are grounded.

[0043] The input power supply can be a 12V power supply, or the voltage value can be set according to the actual situation. The load device can be any one of the following: processor, GPU, storage device, Ethernet transceiver, optoelectronic transceiver, cooling fan, accelerator (distributed GPU, etc.), or other load devices.

[0044] Furthermore, the TLVR inductor circuit includes three inductor branches, namely a first inductor branch, a second inductor branch, and a third inductor branch;

[0045] The inductor branch includes a first branch input terminal, a second branch input terminal, a first branch output terminal, a second branch output terminal, and a third branch output terminal;

[0046] The first branch input terminal of the first inductor branch, the first branch input terminal of the second inductor branch, and the first branch input terminal of the third inductor branch are connected in parallel to the first input terminal;

[0047] The second branch output terminal of the first inductor branch, the second branch output terminal of the second inductor branch, and the second branch output terminal of the third inductor branch are connected in parallel to the second output terminal;

[0048] The second branch input terminal of the first inductor branch, the second branch input terminal of the second inductor branch, and the second branch input terminal of the third inductor branch are connected in parallel to the second input terminal;

[0049] The first branch output terminal of the first inductor branch is connected to the first output terminal, the first branch output terminal of the second inductor branch is connected to the third branch output terminal of the first inductor branch, the first branch output terminal of the third inductor branch is connected to the third branch output terminal of the second inductor branch, and the third branch output terminal of the third inductor branch is grounded.

[0050] In another possible implementation, there are multiple second inductor branches. The first branch input, second branch input, and second branch output of each second inductor branch are connected in parallel. Between two adjacent second inductor branches, the first branch output of the latter second inductor branch is connected to the third branch output of the former second inductor branch. The first branch output of the first second inductor branch is connected to the third branch output of the first inductor branch, and the third branch output of the last second inductor branch is connected to the first branch output of the third inductor branch.

[0051] For example, when there are two second inductor branches, they are divided into a first second inductor branch and a second second inductor branch. The third branch output terminal of the first second inductor branch is connected to the first branch output terminal of the second second inductor branch, the first branch output terminal of the first second inductor branch is connected to the third branch output terminal of the first inductor branch, and the third branch output terminal of the second second inductor branch is connected to the first branch output terminal of the third inductor branch. When there are three second inductor branches, they are divided into a first second inductor branch, a second inductor branch, and a third inductor branch. There are three inductor branches. The third branch output of the first inductor branch is connected to the first branch output of the second inductor branch, the third branch output of the second inductor branch is connected to the first branch output of the second inductor branch, the third branch output of the third inductor branch is connected to the first branch output of the second inductor branch, the first branch output of the first second inductor branch is connected to the third branch output of the first inductor branch, the third branch output of the third second inductor branch is connected to the first branch output of the third inductor branch, and so on.

[0052] Understandably, TLVR inductor circuits are used to convert the voltage of the input power supply into the voltage required by the load device. Therefore, the more inductor branches included in a TLVR inductor circuit, the greater its ability to regulate the input power supply voltage. When the current of the load device changes significantly, it can also achieve a high load transient response and ensure the stability of the voltage when supplying power to the load device.

[0053] The power supply circuit based on TLVR inductors provided in this embodiment of the invention can improve the response speed to current fluctuations in the load device by using TLVR inductor circuits instead of large-capacity capacitor circuits, reduce output capacitance, and thus reduce the installation area and cost of the circuit.

[0054] Example 2

[0055] This utility model embodiment also provides another power supply circuit based on TLVR inductors; the power supply circuit based on TLVR inductors is implemented based on the above embodiments.

[0056] Figure 2 A structural diagram of another power supply circuit based on a TLVR inductor provided for an embodiment of this utility model. (See diagram below.) Figure 2 As shown, the inductor branch in this TLVR-based power supply circuit includes a power converter, a TLVR inductor, and a main inductor Lm.

[0057] The first input terminal of the power converter is connected to the first branch input terminal, the second input terminal of the power converter is connected to the second branch input terminal, the output terminal of the power converter is connected to the second inductor input terminal of the TLVR inductor, the first inductor input terminal of the TLVR inductor is connected to the third branch output terminal, the first inductor output terminal of the TLVR inductor is connected to the first branch output terminal, and the second inductor output terminal of the TLVR inductor is connected to the second branch output terminal.

[0058] One end of the main inductor Lm is connected to the second inductor input terminal of the TLVR inductor, and the other end of the main inductor Lm is connected to the second inductor output terminal of the TLVR inductor.

[0059] Furthermore, the TLVR inductor includes a first coil and a second coil, which are magnetically coupled together. The input terminal of the first coil is connected to the first inductance input terminal of the TLVR inductor, and the output terminal of the first coil is connected to the first inductance output terminal of the TLVR inductor. The input terminal of the second coil is connected to the second inductance input terminal of the TLVR inductor, and the output terminal of the second coil is connected to the second inductance output terminal of the TLVR inductor.

[0060] Through dual-coil coupling, it can quickly respond to load changes of load devices, and is particularly suitable for improving voltage overshoot caused by large load jumps of high-performance load devices, ensuring the stability of the output of the power supply circuit based on TLVR inductor, thereby improving the performance and reliability of the power supply circuit based on TLVR inductor.

[0061] Understandably, for multi-phase voltage regulators (VRs), controlling the duty cycle of only one phase is insufficient to handle high-current load fluctuations; duty cycle control of multiple phases is necessary. However, phase switching takes time, thus requiring a further increase in switching frequency to accelerate response. While increasing the frequency significantly improves load response, it also greatly increases the losses of switching elements. Therefore, it is difficult to meet the high energy efficiency requirements of server power supplies simply by increasing the frequency of existing multi-phase VR circuit configurations.

[0062] In this invention, a power converter is used to control the duty cycle of the phase. For example, in the TLVR inductor circuit, the power converter controls the connection and disconnection of the three inductor branches. The more inductor branches are connected, the larger the duty cycle of the phase is controlled. Therefore, while reducing the large capacity capacitor, the flexibility of duty cycle control for multiple phases is ensured.

[0063] Furthermore, the power converter also includes a grounding interface for grounding. The PWM controller includes a power supply interface for connecting to an external power supply, the voltage of which can be set according to actual conditions. The PWM controller also includes a feedback interface connected to the second output terminal for feeding back the voltage output from the second output terminal to the PWM controller. The PWM controller adjusts its output based on the feedback voltage from the second output terminal to ensure the stability of the voltage output from the second output terminal.

[0064] The power supply circuit based on TLVR inductors provided in this embodiment includes multiple inductor branches. Each inductor branch is connected and disconnected through a power converter, thereby realizing the variation of the adjustment range of the TLVR inductor circuit and improving the flexibility and applicability of the power supply circuit based on TLVR inductors.

[0065] Example 3

[0066] This utility model embodiment also provides a power supply system based on a TLVR inductor; the power supply system based on a TLVR inductor is implemented based on the power supply circuit based on a TLVR inductor in the above embodiment.

[0067] Figure 3 This is a structural diagram of a power supply system based on a TLVR inductor, provided as an embodiment of the present invention. Figure 3 As shown, the power supply system based on TLVR inductors includes at least one power supply circuit based on TLVR inductors.

[0068] The input terminals of each TLVR inductor-based power supply circuit are connected in parallel to the input power supply, and the output terminals of each TLVR inductor-based power supply circuit are connected to the load device. The load devices connected to the output terminals of each TLVR inductor-based power supply circuit can be the same or different.

[0069] In this embodiment of the invention, the input power supply can be a 12V power supply.

[0070] In another possible implementation, a TLVR-based power supply circuit is connected in series between the input power supply and the TLVR-based power supply system, and the output of the TLVR-based power supply circuit is used to supply power to the TLVR-based power supply system.

[0071] The power supply system based on TLVR inductors provided in this embodiment of the invention improves the response speed to current fluctuations in the load device by using TLVR inductor circuits instead of large-capacity capacitor circuits, reduces output capacitance, thereby reducing the installation area and cost of the circuit, and improving the overall efficiency and stability of the system.

[0072] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0073] Finally, it should be noted that the above-described embodiments are merely specific implementations of this utility model, used to illustrate the technical solution of this utility model, and not to limit it. The protection scope of this utility model is not limited thereto. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features, within the technical scope disclosed in this utility model. These modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model, and should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A power supply circuit based on TLVR inductance, characterized by, The TLVR inductor circuit comprises a first input end, a second input end, a first output end, a second output end and a third output end; the first input end is connected with an input power supply and one end of an input capacitor respectively, the second input end is connected with the PWM controller, the first output end is connected with one end of a compensation inductor, and the second output end is connected with one end of an output capacitor; wherein the second output end serves as an output end of the TLVR inductor-based power supply circuit for supplying power to a load device. The other end of the input capacitor, the other end of the compensation inductor, the other end of the output capacitor and the third output end are grounded. The TLVR inductor circuit comprises three inductor branches, namely a first inductor branch, a second inductor branch and a third inductor branch. The first inductor branch, the second inductor branch and the third inductor branch comprise a first branch input end, a second branch input end, a first branch output end, a second branch output end and a third branch output end.

2. The TLVR inductance-based power supply circuit of claim 1, wherein, The first branch input end of the first inductor branch, the first branch input end of the second inductor branch and the first branch input end of the third inductor branch are connected in parallel to the first input end. The second branch output end of the first inductor branch, the second branch output end of the second inductor branch and the second branch output end of the third inductor branch are connected in parallel to the second output end. The second branch input end of the first inductor branch, the second branch input end of the second inductor branch and the second branch input end of the third inductor branch are connected in parallel to the second input end. The first branch output end of the first inductor branch is connected with the first output end, the first branch output end of the second inductor branch is connected with the third branch output end in the first inductor branch, the first branch output end of the third inductor branch is connected with the third branch output end of the second inductor branch, and the third branch output end of the third inductor branch is grounded. The inductor branch comprises a power converter, a TLVR inductor and a main inductor. The first input end of the power converter is connected with the first branch input end, the second input end of the power converter is connected with the second branch input end, the output end of the power converter is connected with the second inductor input end of the TLVR inductor, the first inductor input end of the TLVR inductor is connected with the third branch output end, the first inductor output end of the TLVR inductor is connected with the first branch output end, and the second inductor output end of the TLVR inductor is connected with the second branch output end.

3. The TLVR inductance-based power supply circuit of claim 2, wherein, One end of the main inductor is connected with the second inductor input end of the TLVR inductor, and the other end of the main inductor is connected with the second inductor output end of the TLVR inductor. ​ ​ 4. The TLVR inductance-based power supply circuit of claim 3, wherein, The TLVR inductor comprises a first coil and a second coil, which are magnetically coupled; an input end of the first coil is connected with a first inductor input end of the TLVR inductor, an output end of the first coil is connected with a first inductor output end of the TLVR inductor, an input end of the second coil is connected with a second inductor input end of the TLVR inductor, and an output end of the second coil is connected with a second inductor output end of the TLVR inductor.

5. The TLVR inductance-based power supply circuit of claim 4, wherein, The power converter further comprises a grounding interface for grounding.

6. The TLVR inductance-based power supply circuit of claim 1, wherein, The PWM controller comprises a power supply interface for connecting with an external power supply.

7. The TLVR inductance-based power supply circuit of claim 1, wherein, The PWM controller further comprises a feedback interface connected with the second output end.

8. The TLVR inductance-based power supply circuit of claim 1, wherein, The load device comprises any one of a processor, a GPU, a storage device, an Ethernet transceiver, an optical-electrical transceiver, a cooling fan and an accelerator.

9. The TLVR inductance-based power supply circuit of claim 1, wherein, The input power supply is a 12V power supply.

10. A power supply system based on TLVR inductance, characterized by, The system comprises at least one TLVR inductor-based power supply circuit according to any one of claims 1-9; circuit input ends of the TLVR inductor-based power supply circuits are connected in parallel to an input power supply, and circuit output ends of the TLVR inductor-based power supply circuits are connected to load devices.

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