Server power supply module, server power supply and server

Abstract

The invention discloses a server power supply module, a server power supply and a server, and relates to the technical field of computers. According to the method, internal devices of a server power supply are decoupled, and the internal devices are integrated into a control assembly, a filtering assembly, a first voltage conversion assembly and a second voltage conversion assembly according to functions of the internal devices of the server power supply. Decoupling and reconstruction of internal devices of the server power supply are realized, and circuit units of all parts can be responsible for corresponding server power supply functions. Moreover, the first voltage conversion circuit can adjust the phase of the voltage and the phase of the current, thereby achieving the power factor correction of the intermediate power supply, and improving the electric conversion efficiency. Therefore, the technical problem that internal devices of the server power supply are disordered in related technologies is solved, and the technical effects of decoupling and function integration of the internal devices of the server, thereby being beneficial to improving the management efficiency of the server power supply and improving the electricity conversion efficiency are achieved.

Description

Technical Field

[0001] This application relates to the field of computer technologies, and in particular, to a server power module, a server power supply, and a server. Background Art

[0002] A server is usually divided into a central processing unit module, a graphics processing unit module, a power module, a heat dissipation module, etc. That is to say, the server power supply is designed as an independent and complete module.

[0003] Since the operation of a server requires stable and reliable power support, the power supply of the server is a necessary operating condition for the server operation, and the performance of the server power supply has a profound impact on the reliability of the server. Due to the extremely complex internal components involved in the server power supply, the placement positions of the internal components of the server power supply and the printed circuit board design are very complicated, thus resulting in the problem of relatively chaotic internal components of the server power supply. Summary of the Invention

[0004] This application provides a server power module, a server power supply, and a server to at least solve the problem of chaotic internal components of the server power supply in the related art.

[0005] This application provides a server power module. The server power module includes: a control unit, a filtering unit, a first voltage conversion unit, a second voltage conversion unit, and an auxiliary power unit; the control unit is configured to output a control signal; the filtering unit is connected to the control unit and is configured to input an alternating input power supply and filter the input power supply; the first voltage conversion unit is connected to the filtering unit and the control unit and is configured to convert the filtered input power supply into a direct current intermediate power supply based on the control signal and perform power factor correction on the intermediate power supply; wherein, power factor correction means adjusting the phases of the voltage and the current to match; the second voltage conversion unit is connected to the first voltage conversion unit and the control unit and is configured to convert the intermediate power supply into a system power supply for supplying power to the server; the auxiliary power unit is connected to the first voltage conversion unit and is configured to convert the intermediate power supply into an auxiliary power supply to supply power to the internal components of the server power supply.

[0006] The present application also provides a server power supply, which includes: the server power supply module, power supply housing, control component, filtering component, first voltage conversion component, second voltage conversion component, and auxiliary power supply component in the above-mentioned embodiments; wherein, the server power supply module includes a control unit, a filtering unit, a first voltage conversion unit, a second voltage conversion unit, and an auxiliary power supply unit; the control component integrates the control unit; the filtering component integrates the filtering unit; the first voltage conversion component integrates the first voltage conversion unit; the second voltage conversion component integrates the second voltage conversion unit; the auxiliary power supply component integrates the auxiliary power supply unit; the control component, the filtering component, the first voltage conversion component, the second voltage conversion component, and the auxiliary power supply component are respectively independent packaged components and are detachably arranged in the power supply housing.

[0007] The present application also provides a server, which includes: a server body and the server power supply in the above-mentioned embodiments.

[0008] With the present application, since the internal devices of the server power supply are decoupled, and according to the functions of the internal devices of the server power supply, the internal devices are integrated into five parts: a control component, a filtering component, a first voltage conversion component, and a second voltage conversion component. The decoupling and reconstruction of the internal devices of the server power supply are realized, enabling each part of the circuit unit to be responsible for the corresponding server power supply function. Moreover, the first voltage conversion circuit can also adjust the phases of both the voltage and current to achieve power factor correction for intermediate power supply, and can improve the electrical conversion efficiency. Therefore, the technical problem of chaotic internal devices of the server power supply can be solved, achieving the decoupling and function integration of the internal devices of the server, which is beneficial to improving the server power supply management efficiency and can also improve the technical effect of electrical conversion efficiency. Description of the Drawings

[0009] To more clearly illustrate the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0010] Figure 1 is a schematic structural diagram of a server power supply in the related art; Figure 2 is a schematic structural diagram of an embodiment of the server power supply module of the present application; Figure 3 is a schematic structural diagram of another embodiment of the server power supply module of the present application; Figure 4 is a schematic structural diagram of an embodiment of the filtering unit of the present application; Figure 5 is Figure 4Schematic diagram of the structure of an embodiment of the encapsulated filtering unit; Figure 6 Schematic diagram of the application scenario of an embodiment of the filtering unit of the present application; Figure 7 Schematic diagram of the structure of an embodiment of the first voltage conversion unit of the present application; Figure 8 Schematic diagram of the structure of another embodiment of the first voltage conversion unit of the present application; Figure 9 Schematic diagram of the structure of an embodiment of the encapsulated first voltage conversion unit of the present application; Figure 10 Schematic diagram of the structure of an embodiment of the second voltage conversion unit of the present application; Figure 11 Schematic diagram of the structure of another embodiment of the second voltage conversion unit of the present application; Figure 12 Schematic diagram of the structure of an embodiment of the encapsulated second voltage conversion unit of the present application; Figure 13 Schematic diagram of the structure of an embodiment of the auxiliary power source unit of the present application; Figure 14 is Figure 13 Schematic diagram of the structure of an embodiment of the encapsulated auxiliary power source unit shown; Figure 15 Schematic diagram of the structure of an embodiment of the control unit of the present application; Figure 16 Schematic diagram of the structure of another embodiment of the control unit of the present application; Figure 17 Schematic diagram of the structure of an embodiment of the server power supply of the present application; Figure 18 Schematic diagram of the structure of an embodiment of the server power supply assembly of the present application; Figure 19 is Figure 18 Schematic diagram of the appearance of an embodiment of the server power supply of the server power supply assembly shown; Figure 20 Schematic diagram of the structure of another embodiment of the server power supply assembly of the present application; Figure 21 is Figure 20 Schematic diagram of the appearance of an embodiment of the server power supply of the server power supply assembly shown; Figure 22a Schematic diagram of the structure of an embodiment of the first server in the related art; Figure 22b Schematic diagram of the structure of an embodiment of the server of the present application; Figure 23a Schematic diagram of the structure of an embodiment of the second server in the related art; Figure 23bIt is a schematic structural diagram of another embodiment of the server of the present application; Figure 24 It is a schematic structural diagram of an embodiment of the three-arm circuit topology of the present application; Figures 25a - 25g It is a schematic diagram of an example circuit of the arm circuit of the present application; Figures 26a - 26c It is a schematic diagram of the I-H mode three-arm circuit topology of the present application; Figure 27 It is a schematic diagram of the parallel mode three-arm circuit topology of the present application; Figure 28 It is a schematic structural diagram of one arm and two arms of the first voltage conversion unit of the present application; Figures 29a - 29b It is Figure 28 The conduction schematic diagram of the first voltage conversion unit shown under different power input voltages; Figure 30 It is Figure 28 The waveform schematic diagram of an embodiment of the first voltage conversion unit shown; Specific embodiments

[0011] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the protection scope of the present application.

[0012] It should be noted that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application. The terms "mounted", "connected", and "coupled" should be understood in a broad sense. 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. The terms "parallel", "perpendicular", and "equal" include the described situations and situations similar to the described situations, and the range of the similar situations is within an acceptable deviation range, where the acceptable deviation range is determined by those of ordinary skill in the art considering the measurements being discussed and the errors associated with the measurements of specific quantities (i.e., the limitations of the measurement system). For example, "parallel" includes absolute parallel and approximate parallel, and the acceptable deviation range of approximate parallel can be, for example, within 5° deviation; "perpendicular" includes absolute perpendicular and approximate perpendicular, and the acceptable deviation range of approximate perpendicular can also be, for example, within 5° deviation. "Equal" includes absolute equality and approximate equality, and the acceptable deviation range of approximate equality can be, for example, that the difference between the two equal ones is less than or equal to 5% of either one. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0013] In order to enable those skilled in the art of the present technology to better understand the solution of the present application, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0014] An embodiment of the present application provides a server power module, and the device will be described in detail in combination with the structure and working principle of the server power module.

[0015] The application scenario involved in the present application, that is, the server, will be elaborated below. A server is a specific IT (Internet Technology) device that provides computing power and runs software applications in a network environment, and can provide computing or application services for other client devices (such as terminal devices like personal computers and smart phones) in the network. Generally speaking, a server has the ability to undertake response service requests, undertake services, and guarantee services.

[0016] Internally, the server can be roughly divided into a heat dissipation component, a graphics processing unit component, a central processing unit component, and a power supply component (i.e., the server power supply in this application). The storage component can be mounted on the central processing unit component and the two are linked. That is to say, the server power supply has already been a component decoupled from other components of the server, and it can be disassembled as a whole and maintained separately. However, as elaborated above, due to the extremely complex internal devices of the server power supply, the complexity is relatively high in the aspects of development, design, assembly, maintenance, etc.

[0017] Please refer to Figure 1 , Figure 1 which is a schematic structural diagram of a server power supply in the related art.

[0018] As Figure 1 exemplified in, generally, the server power supply is an independent module inside the server.

[0019] The server power supply usually includes a main transformer 101, an auxiliary source transformer 102, a resonant inductor 103, a Buck capacitor 104, an inductor 105, an EMI filter inductor 106, a main radiator 107, an input connector 108, a fan 109, a relay 110, a rectifier bridge 111, a power MOS transistor 112, a diode 113, a DC / DC power MOS transistor 114, a synchronous rectification MOS transistor + heat sink 115, an output filter capacitor 116, an output gold finger connector 117, a power control chip 118, a power control board 119, etc.

[0020] Among them, Buck represents a buck converter circuit, and its average output voltage is usually less than the input voltage. EMI represents electromagnetic interference, which is the electromagnetic wave generated during the operation of the server itself. The electromagnetic wave will interfere with the server itself or other devices and affect their normal operation. MOS represents a metal-oxide-semiconductor field-effect transistor, abbreviated as a metal-oxide-semiconductor field-effect transistor (Metal-Oxide-Semiconductor Field-Effect Transistor, MOSFET). DC / DC represents a DC-to-DC power supply.

[0021] The above-mentioned components and parts jointly form the components of the server power supply for joint development, design, assembly, maintenance, etc.

[0022] Therefore, in this application, the server power supply is decoupled and the components are assembled again to modularize the server power supply, which is beneficial to improving the server power supply management efficiency.

[0023] Please refer to Figure 2 , Figure 2It is a schematic structural diagram of an embodiment of the server power supply module of the present application.

[0024] In one embodiment, the server power supply module includes a control unit 21, a filtering unit 22, a first voltage conversion unit 23, a second voltage conversion unit 24, and an auxiliary power supply unit 25.

[0025] The control unit 21 is used to output a control signal.

[0026] The filtering unit 22 is connected to the control unit 21 and is used to input AC input power supply and filter the input power supply.

[0027] The first voltage conversion unit 23 is connected to the filtering unit 22 and the control unit 21, and is used to convert the filtered input power supply into a DC intermediate power supply based on the control signal and perform power factor correction on the intermediate power supply. Among them, power factor correction means adjusting the phases of the voltage and current to match.

[0028] The second voltage conversion unit 24 is connected to the first voltage conversion unit 23 and the control unit 21, and is used to convert the intermediate power supply into a system power supply for supplying power to the server.

[0029] The auxiliary power supply unit 25 is connected to the first voltage conversion unit 23 and is used to convert the intermediate power supply into an auxiliary power supply to supply power to the internal devices of the server power supply.

[0030] That is to say, in this embodiment, the components of the server power supply are decoupled, and five independent units are formed based on their achievable functions, so as to improve the server power management efficiency.

[0031] Thus, when the server power supply obtains an input power supply from the outside (such as mains power, data center power supply, etc.), the input power supply is first filtered by the filtering unit 22 to improve the power quality of the input power supply. The input power supply after being filtered by the filtering unit 22 will be transmitted to the first voltage conversion unit 23. It is easy to understand that the input power supply is alternating current, and it is still alternating current after being filtered by the filtering unit 22. The first voltage conversion unit 23 converts the filtered AC input power supply into a DC intermediate power supply so that the internal of the server power supply and other server devices can use it. The intermediate power supply processed by the first voltage conversion unit 23 has a relatively high voltage, so it can be step-down processed by the second voltage conversion unit to obtain a system power supply for supplying power to the server.

[0032] In this embodiment, the auxiliary power supply unit 25 can also step down the intermediate power supply to obtain an auxiliary power supply for powering the internal components of the server power supply. At the same time, the auxiliary power supply unit 25 can also supply power to some components inside the server, that is, cooperate with the second voltage conversion unit 24 to supply power to the internal components of the server. For example, the auxiliary power supply unit 25 can supply power to the BMC, BIOS, PCIe (Peripheral Component Interconnect express, a high-speed serial computer expansion bus standard) network card, etc.

[0033] Among them, BMC represents the Baseboard Management Controller, which can use sensors to monitor the server or the status of other hardware drive devices.

[0034] BIOS represents the Basic Input Output System, which is a standard firmware interface. The BIOS can store the basic input and output programs of the server, the power-on self-test program and the system self-boot program, and can also read and write the specific information of the system settings.

[0035] PCIe represents a high-speed serial computer expansion bus standard (Peripheral Component Interconnect express), which belongs to high-speed serial point-to-point dual-channel high-bandwidth transmission. The devices connected are allocated exclusive channel bandwidth and do not share the bus bandwidth. It can support functions such as active power management, error reporting, end-to-end reliable transmission, hot plugging, and quality of service.

[0036] Among them, the second voltage conversion unit 24 and the auxiliary power supply unit 25 can include an isolation architecture inside to isolate the input high voltage (such as 400 VDC) and the output low voltage (such as 12 VDC). Among them, VDC represents volts direct current.

[0037] Moreover, in this embodiment, when the first voltage conversion unit 23 converts the input power supply into an intermediate power supply, it can also perform power factor correction on the intermediate power supply, adjust the phase of the voltage and current of the intermediate power supply to match, so as to improve the power conversion efficiency in this embodiment.

[0038] Specifically, the input power supply is sent to the server (mains power) via the power transmission and distribution system, which is an alternating current with a voltage of 220 Vac. The load impedance of electrical products has three conditions, including resistive, capacitive, and inductive, etc. Among them, the resistive load consumes power and generates energy conversion such as light and heat, while the capacitive or inductive load can store energy without consuming energy. In the case of a pure resistive load, its voltage and current are in the same phase. In the case of a capacitive load, the phase of the current leads the voltage, and in the case of an inductive load, the voltage leads the phase of the current. This leading and lagging phase angle directly affects the energy consumption and storage conditions of the load. The specific power calculation formula is as follows: P = U * I * COSθ Equation 1-1 Among them, P represents power; U represents voltage; I represents current, θ is the included angle between U and I, and the value of Cosθ ranges from 0 to 1. This value can directly affect the condition of the current doing real work on the load, which is called the power factor (Power Factor, PF). In this embodiment, power factor correction makes the voltage and current phases match, which can be to make the phases of the voltage and current the same and make the load approximate to a resistive load, thereby improving the electrical conversion efficiency in this embodiment. Of course, limited by component accuracy, debugging costs, etc., a certain small phase difference between the voltage and current is allowed, and no strict limitation is made here.

[0039] Please refer to Figure 3 , Figure 3 which is a schematic structural diagram of another embodiment of the server power module of this application.

[0040] As described in the previous text, in this embodiment, the server power module is decoupled and decomposed into five parts: a control unit 21, a filtering unit 22, a first voltage conversion unit 23, a second voltage conversion unit 24, and an auxiliary source unit 25. Figure 3 The interfaces of the filtering unit 22, the first voltage conversion unit 23, the second voltage conversion unit 24, and the auxiliary source unit 25 are exemplified and shown.

[0041] Specifically, the first voltage conversion unit 23 includes a first input terminal L’, a second input terminal N’, a first output terminal HV+, a second output terminal HV-, and a sine wave output terminal VBulk.

[0042] The second voltage conversion unit 24 includes a third input terminal HV+, a fourth input terminal HV-, a third output terminal LV+, and a fourth output terminal LV-.

[0043] The auxiliary source unit 25 includes a fifth input terminal HV+, a sixth input terminal HV-, a fifth output terminal LV+, and a sixth output terminal LV-.

[0044] The filtering unit 22 includes a seventh input terminal L, an eighth input terminal N, a seventh output terminal L', and an eighth output terminal N'.

[0045] Among them, the seventh output terminal L' is connected to the first input terminal L', so the two are given the same reference numeral; similarly, the eighth output terminal N' is connected to the second input terminal N', so the two are given the same reference numeral; and so on. Regarding Figure 3 the way of assigning interface marks exemplified in

[0046] Please refer to and combine Figure 4 and Figure 5 , Figure 4 which is a schematic structural diagram of an embodiment of the filtering unit of the present application, Figure 5 and Figure 4 is a schematic structural diagram of an embodiment of the encapsulation of the filtering unit shown in

[0047] In one embodiment, the filtering unit 22 may include a first-order filtering circuit, a second-order filtering circuit, and a third-order filtering circuit.

[0048] The first-order filtering circuit is connected to the second-order filtering circuit, and the second-order filtering circuit is connected to the third-order filtering circuit. Among them, the filtering frequency band of the first-order filtering circuit is lower than that of the second-order filtering circuit, and the filtering frequency band of the second-order filtering circuit is lower than that of the third-order filtering circuit.

[0049] Thus, in this embodiment, the frequency band range that the filtering unit 22 can filter can be expanded, so as to enhance the filtering effect of the filtering unit 22 on the input power supply, which is beneficial to further improving the power supply stability of the server power supply, and at the same time can improve the power supply quality of the server power supply, and further is beneficial to improving the operation reliability of the server.

[0050] Generally understood, according to the working frequency and interference characteristics of the server power supply, the filtering unit 22 such as an EMI filter can be divided into a low-pass filter, a high-pass filter, a band-pass filter, and a band-stop filter. The low-pass filter can suppress high-frequency interference, and the high-pass filter can filter out low-frequency interference. The band-pass filter and the band-stop filter can be used to filter out interference in specific frequency bands. Therefore, in this embodiment, the filtering unit 22 selects a composite multi-stage filter, that is, a third-order EMI filtering circuit, so as to be able to filter out interference in specific frequency bands and provide protection coverage when the PSU (Power Supply Unit) encounters lightning strikes or ESD (Electro-Static discharge) pulse transients. In the design of the filtering unit 22, the insertion loss can be used to reflect the loss and attenuation degree of the signal power before and after using the filtering unit 22. The greater the insertion loss, the more attenuation, and the better the effect of the filtering unit 22.

[0051] In this embodiment, the second-order filter circuit can attenuate and achieve a margin of -6 dB (decibels), and the third-order filter circuit can achieve a margin of -10 dB (decibels).

[0052] The detailed circuit structure of the filter unit 22 in this embodiment will be described below.

[0053] Specifically, the filter unit 22 may include a seventh input terminal L, an eighth input terminal N, a ninth input terminal PE, a seventh output terminal L', and an eighth output terminal N'.

[0054] Among them, the first-order filter circuit includes a first electromagnetic suppression capacitor CX1, a first transient voltage suppression diode TVS1, and a first filter LF1.

[0055] The first electromagnetic suppression capacitor CX1 is connected between the seventh input terminal L and the eighth input terminal N, and the first transient voltage suppression diode TVS1 is connected in parallel with the first electromagnetic suppression capacitor CX1. The two connection terminals on the first side of the first filter LF1 are respectively connected to both ends of the first transient voltage suppression diode TVS1.

[0056] The second-order filter circuit includes a second electromagnetic suppression capacitor CX2, a second filter LF2, and a third electromagnetic suppression capacitor CX3.

[0057] The two connection terminals on the second side of the first filter LF1 are respectively connected to both ends of the second electromagnetic suppression capacitor CX2. The two connection terminals on the first side of the second filter LF2 are respectively connected to both ends of the second electromagnetic suppression capacitor CX2. The two connection terminals on the second side of the second filter LF2 are respectively connected to both ends of the third electromagnetic suppression capacitor CX3.

[0058] The third-order filter circuit includes a third filter LF3, a fourth electromagnetic suppression capacitor CX4, a first transient voltage suppression diode TVS1, a first common-mode suppression capacitor CY1, and a second common-mode suppression capacitor CY2.

[0059] The two connection terminals on the first side of the third filter LF3 are respectively connected to both ends of the third electromagnetic suppression capacitor CX3. The two connection terminals on the second side of the third filter LF3 are respectively connected to both ends of the fourth electromagnetic suppression capacitor CX4. The fourth electromagnetic suppression capacitor CX4 is connected in parallel with the first transient voltage suppression diode TVS1.

[0060] One end of the first transient voltage suppression diode TVS1 and one end of the first common-mode suppression capacitor CY1 are connected to the seventh output terminal L'.

[0061] The other end of the first common-mode suppression capacitor CY1 and one end of the second common-mode suppression capacitor CY2 are grounded.

[0062] The other end of the second common-mode suppression capacitor CY2 and the other end of the first transient voltage suppression diode TVS1 are connected to the eighth output terminal N'.

[0063] Optionally, the first filter LF1, the second filter LF2, and the third filter LF3 can be common-mode inductors. When selecting the common-mode inductors, their self-resonant frequencies and impedance characteristics can be considered.

[0064] The safety capacitors can include X capacitors and Y capacitors. Among them, the X capacitors can suppress electromagnetic interference, and the Y capacitors can suppress common-mode interference.

[0065] Therefore, in this embodiment, the first electromagnetic interference suppression capacitor CX1, the first electromagnetic interference suppression capacitor CX1, the first electromagnetic interference suppression capacitor CX1, the first electromagnetic interference suppression capacitor CX1 can be X capacitors. The first common-mode suppression capacitor CY1 and the second common-mode suppression capacitor CY2 can be Y capacitors.

[0066] When selecting the X capacitors, attention can be paid to their ESR (equivalent series resistance), and when selecting the Y capacitors, attention can be paid to their withstand voltage and leakage current characteristics.

[0067] The first transient voltage suppressor TVS1 and the first transient voltage suppressor TVS1 can protect the server power supply when encountering lightning strikes or ESD pulses, that is, achieve impedance matching of the circuit in this embodiment.

[0068] For example, the insertion loss, transfer function, and amplitude-frequency characteristic of the third-order filter unit 22: The roll-off is -100 dB / Dec, presenting a turning point: the minimum frequency point f of the common-mode noise CM is: after 150 kHz (kilohertz); the insertion loss at the minimum frequency point of the common-mode noise (after 150 kHz) is: V CMloss = 90 dB; the turning frequency f of the third-order filter unit 22 CCM is: f CCM = 10^(-V CMloss / 100) x f CM = 18.9 KHz.

[0069] Calculate CX1, CX2, CX3, Cx4, LF1, LF2, LF3 from f CCM . The specific formula is as follows: f ccm = 1 / (2π√(3&CX1 * CX2 * CX3 * CX4) * (LF1 * LF2 * LF3))) Equation 2-1 Let CX1 + CX2 + CX3 + CX4 = 4 uF, and assume CX1 = CX2 = CX3 = CX4 = 1 uF (microfarad), then the expression of LF1 is as follows: Equation 2-2 Therefore, from the above formula, it can be obtained that LF1 = LF2 = LF3 = 10 μH (microhenry).

[0070] The selection of Y capacitors is such that they can release to the other side to reduce the radiation through the input line to the server power supply, thereby reducing noise interference. According to the insulation level, Y capacitors are divided into Y1 level, Y2 level, Y3 level, and Y4 level. In this embodiment, when the working environment of the server is a conventional indoor environment, data center, etc., Y1-level Y capacitors can be selected. If the working environment of the server is a relatively extreme environment, such as a cold area, Y2-level Y capacitors can be selected to save costs while ensuring the power supply performance of the server and reducing the risk of resource waste.

[0071] Please refer to Figure 6 , Figure 6 which is a schematic diagram of the application scenario of an embodiment of the filtering unit of this application.

[0072] Figure 6 It is exemplified in [the figure] that the filtering unit 22 is connected to the power supply plug. Among them, the seventh input terminal L is used to connect to the live wire, the eighth input terminal N is used to connect to the neutral wire, and the ninth input terminal PE is used to connect to the ground wire.

[0073] In the design of the filtering unit 22, the layout of the PCB (Printed Circuit Board) plays an important role. Through the good layout design shown in this embodiment, the influence of parasitic inductance and parasitic capacitance can be effectively reduced, thereby improving the filtering performance of the filtering unit 22. The layout design strategy in this embodiment includes increasing the area of the power supply and ground planes, reducing the length of high-frequency signal lines, optimizing the placement position of components, etc. That is, in this embodiment, the third-order filtering unit 22 is integrated as much as possible to reduce the area and form a three-terminal input and two-terminal output filtering unit 22.

[0074] Please refer to Figures 7 - 9 , Figure 7 which is a schematic diagram of the structure of an embodiment of the first voltage conversion unit of this application, Figure 8 which is a schematic diagram of the structure of another embodiment of the first voltage conversion unit of this application, Figure 9 which is a schematic diagram of the structure of an embodiment of the package of the first voltage conversion unit of this application.

[0075] In one embodiment, the first voltage conversion unit 23 includes a power factor correction circuit, a first arm circuit, a second arm circuit, and a third arm circuit.

[0076] The first arm circuit, the second arm circuit, the power factor correction circuit, and the third arm circuit are connected in parallel with each other in sequence; the first arm circuit is used to receive the input power supply, and the input power supply is processed by the first arm circuit, the second arm circuit, the power factor correction circuit, and the third arm circuit to form an intermediate power supply.

[0077] That is to say, considering that the power consumption of the server power supply is serious, currently, the power supply is usually increased by building power plants and other means. However, in this embodiment, it is considered that the reason for the serious power consumption of the server power supply is affected by the characteristics of its internal impedance. Usually, the internal power factor of the server power supply is very low, which leads to very unsatisfactory power conversion efficiency. Therefore, in this embodiment, the situation of unsatisfactory power conversion efficiency of the server power supply can be intervened, and the power conversion efficiency of the server power supply can be improved by increasing the power factor of the server power supply, thereby improving the utilization rate of the input power supply.

[0078] Moreover, different from the related art in which power factor correction is achieved through a boost topology circuit structure and full-bridge full-wave rectification of a rectifier bridge, in this embodiment, the full-bridge full-wave rectification is omitted through a three-arm circuit structure, which can simplify the circuit topology of the first voltage conversion unit 23, effectively reduce the volume of the first voltage conversion unit 23, and improve the integration degree of the first voltage conversion unit 23.

[0079] Furthermore, the detailed circuit structure of the first voltage conversion unit 23 in this embodiment is described by way of example below.

[0080] The first voltage conversion unit 23 includes a first input terminal L’, a second input terminal N’, a first output terminal HV+, and a second output terminal HV-.

[0081] The power factor correction circuit includes a power factor correction component TAPFC Controller and a correction switch component InrushLimiter. Among them, the correction switch component InrushLimiter includes a fixed connection end, a first connection end, and a second connection end.

[0082] The fixed connection end is connected to the first input terminal L’ through a first arm circuit and is also connected to the second input terminal N’ through a second arm circuit; the first connection end is connected to the power factor correction component TAPFC Controller, and the second connection end is connected to the first output terminal HV+ and the second output terminal HV-.

[0083] When the fixed connection end is connected to the first connection end, the power factor correction component TAPFC Controller performs power factor correction, so that active power factor correction can be realized according to the actual electrical situation in the circuit.

[0084] Still further, the first voltage conversion unit 23 further includes a first guiding component D1, a second guiding component D2, and a sine wave output terminal VBulk.

[0085] The first arm circuit includes a first switching component Q1 and a second switching component Q2. Among them, the first switching component Q1 includes a control end, a first end, and a second end. The second switching component Q2 includes a control end, a first end, and a second end.

[0086] The second arm circuit includes a third switching device Q3 and a fourth switching device Q4. Among them, the third switching device Q3 includes a control terminal, a first terminal, and a second terminal. The fourth switching device Q4 includes a control terminal, a first terminal, and a second terminal.

[0087] The third arm circuit includes a first inductor L1 and a fifth switching device Q5. Among them, the fifth switching device Q5 includes a control terminal, a first terminal, and a second terminal.

[0088] The factor correction component TAPFC Controller is connected to the control terminals of the first switching device Q1, the second switching device Q2, the third switching device Q3, the fourth switching device Q4, and the fifth switching device Q5.

[0089] The first terminal of the first switching device Q1 and the first terminal of the third switching device Q3 are connected to the fixed connection terminal. The second terminal of the first switching device Q1 and the first terminal of the second switching device Q2 are connected to the first input terminal L'.

[0090] The second terminal of the second switching device Q2 and the second terminal of the fourth switching device Q4 are connected to the second output terminal HV-. The second terminal of the third switching device Q3 and the first terminal of the fourth switching device Q4 are connected to the second input terminal N'.

[0091] One end of the first inductor L1 is connected to the second connection terminal and the first output terminal HV+. The other end of the first inductor L1 and the first terminal of the fifth switching device Q5 are connected to the sine wave output terminal VBulk through the first guiding component D1. Among them, the first guiding component D1 is used to control the power supply to be guided from the other end of the first inductor L1 to the sine wave output terminal VBulk.

[0092] The first output terminal HV+ is connected to the sine wave output terminal VBulk through the second guiding component D2. Among them, the second guiding component D2 is used to control the power supply to be guided from the first output terminal HV+ to the sine wave output terminal VBulk.

[0093] That is to say, in this embodiment, the control signal of the fifth switching device Q5 comes from the factor correction component TAPFC Controller with power factor correction function, and the factor correction component TAPFC Controller can be an integrated circuit. Moreover, it can perform feedback control on the voltage loop and the current loop, and transmit the signals of the voltage loop and the current loop back to the factor correction component TAPFC Controller to conduct and cut off the fifth switching device Q5, thereby realizing active current waveform shaping. Thus, the electrical conversion efficiency in this embodiment can be increased to more than 98%.

[0094] Optionally, the factor correction component TAPFC Controller can be a current-mode power factor trimmer (CCM PFC, continuous conduction mode power factor corrector), which can operate above 200W (watts), and can even operate at several thousand W.

[0095] Optionally, the first voltage conversion unit 23 includes a first capacitor CR, a second capacitor CBulk, a first output terminal HV+, a second output terminal HV−, and a sine wave output terminal VBulk.

[0096] The first capacitor CR is connected between the first output terminal HV+ and the second output terminal HV−; the second capacitor CBulk is connected between the sine wave output terminal VBulk and the second output terminal HV−.

[0097] Among them, the first capacitor CR can be a high-voltage capacitor, and its parameters can be approximately 800uF / 630V (volts). The second capacitor can be a Bulk (large-capacity) capacitor, and its parameters can be about 1000uF / 630V.

[0098] Please refer to Figures 10 - 12 , Figure 10 which is a schematic structural diagram of an embodiment of the second voltage conversion unit of the present application, Figure 11 which is a schematic structural diagram of another embodiment of the second voltage conversion unit of the present application, Figure 12 which is a schematic structural diagram of an embodiment of the package of the second voltage conversion unit of the present application.

[0099] In one embodiment, the second voltage conversion unit 24 includes an inductor assembly, a fourth-arm circuit, a fifth-arm circuit, and a sixth-arm circuit.

[0100] The fourth-arm circuit and the fifth-arm circuit are connected through the inductor assembly; the inductor assembly, the fourth-arm circuit, and the fifth-arm circuit serve as the primary circuit of the resonant converter; the sixth-arm circuit serves as the secondary circuit of the resonant converter.

[0101] It can be seen that in this embodiment, the second voltage conversion unit 24 is also constructed as a three-arm circuit topology, changing the circuit architecture of the original full-bridge LLC (Inductor-Inductor-Capacitor) resonant converter, which can improve the voltage conversion efficiency and significantly reduce the volume of the second voltage conversion unit 24. In an alternative embodiment, the second voltage conversion unit 24 can also use a full-bridge LLC resonant converter. The primary side of the full-bridge LLC resonant converter is a full-bridge circuit and an LLC resonant tank, and the secondary side is a full-wave rectifier circuit.

[0102] Furthermore, the following Figures 10 - 12The detailed circuit topology of the second voltage conversion unit 24 exemplified above will be elaborated by way of example.

[0103] The second voltage conversion unit 24 includes a first ballast OL1, a second ballast OL2, a voltage control component TALLC Controller, a third input terminal HV+, a fourth input terminal HV-, a third output terminal LV+, and a fourth output terminal LV-. Among them, the third input terminal HV+ and the fourth input terminal HV- are connected to the first voltage conversion unit 23.

[0104] The fourth arm circuit includes a sixth switching component Q6 and a seventh switching component Q7. Among them, the sixth switching component Q6 includes a control terminal, a first terminal, and a second terminal. The seventh switching component Q7 includes a control terminal, a first terminal, and a second terminal.

[0105] The fifth arm circuit includes an eighth switching component Q8 and a ninth switching component Q9. Among them, the eighth switching component Q8 includes a control terminal, a first terminal, and a second terminal. The ninth switching component Q9 includes a control terminal, a first terminal, and a second terminal.

[0106] The sixth arm circuit includes a first winding S1, a second winding S2, a tenth switching component SR1, and an eleventh switching component SR2. Among them, the tenth switching component SR1 includes a control terminal, a first terminal, and a second terminal. The eleventh switching component SR2 includes a control terminal, a first terminal, and a second terminal.

[0107] The voltage control component TALLC Controller includes an input terminal and an output terminal. Among them, the input terminal of the voltage control component TALLC Controller is connected to the control terminal of the sixth switching component Q6, the control terminal of the seventh switching component Q7, the control component of the eighth switching component Q8, and the control terminal of the ninth switching component Q9. The output terminal of the voltage control component TALLC Controller is connected to the control terminal of the tenth switching component SR1 and the control terminal of the eleventh switching component SR2.

[0108] The first terminal of the sixth switching component Q6 and the first terminal of the eighth switching component Q8 are connected to the third input terminal HV+.

[0109] The second terminal of the sixth switching component Q6 and the first terminal of the seventh switching component Q7 are connected to one end of the inductor assembly.

[0110] The second terminal of the seventh switching component Q7 and the second terminal of the ninth switching component Q9 are connected to the fourth input terminal HV-.

[0111] The second terminal of the eighth switching component Q8 and the first terminal of the ninth switching component Q9 are connected to the other end of the inductor assembly.

[0112] One end of the first winding S1 is connected to the first end of the tenth switching device SR1, and the other end of the first winding S1 and one end of the second winding S2 are connected to the third output terminal LV+. The other end of the second winding S2 is connected to the first end of the eleventh switching device SR2.

[0113] The second end of the tenth switching device SR1 is connected to one end of the first ballast OL1. The second end of the eleventh switching device SR2 is connected to one end of the second ballast OL2.

[0114] The other end of the first ballast OL1 and the other end of the second ballast OL2 are connected to the fourth output terminal LV-.

[0115] Thus, in this embodiment, the input voltage range (HVDC) of the second voltage conversion unit 24 of the three-arm full bridge is 350 VDC (volt, direct current) to 420 VDC, the output voltage (Vout) is 48 VDC, the full-load rated power (Pout) is 1800 W, and the resonance frequency (fr) is 82 kHz. In this embodiment, the electrical conversion efficiency can reach more than 99%, and compared with the traditional full-bridge LLC resonant converter, the density of the component devices can be increased by about 150%.

[0116] Among them, the tenth switching device SR1 and the eleventh switching device SR2 can be MOS transistors. Different from the diodes in the traditional full-bridge LLC resonant converter, the efficiency can be further improved. Moreover, the transformer can be formed into a conversion integrated circuit.

[0117] Optionally, the inductor assembly includes a third capacitor C3, a resonant inductor Lm, and a second inductor L2 connected in series in sequence.

[0118] The third capacitor C3 is connected to the fourth-arm circuit; the second inductor L2 is connected to the fifth-arm circuit.

[0119] The second voltage conversion unit 24 further includes a fourth capacitor, a third output terminal LV+, and a fourth output terminal LV-, and the fourth capacitor is connected between the third output terminal LV+ and the fourth output terminal LV-.

[0120] That is to say, in this embodiment, at least the main transformer 101 and the resonant inductor 103 as Figure 1 exemplified can be integrated into the second voltage conversion unit 24, realizing the decoupling of the device while relying on the functions of the components and integrating the devices into the unit.

[0121] Please refer to Figure 13 and Figure 14 , Figure 13 is a schematic structural diagram of an embodiment of the auxiliary power supply unit of the present application, Figure 14 is Figure 13The structural schematic diagram of an embodiment of the auxiliary source unit shown.

[0122] In one embodiment, the auxiliary source unit 25 includes an auxiliary power supply component Aux Power Controller, a seventh-arm circuit, an eighth-arm circuit, and a ninth-arm circuit.

[0123] The seventh-arm circuit serves as the primary circuit of the auxiliary source transformer.

[0124] The eighth-arm circuit and the ninth-arm circuit are connected in parallel and serve as the secondary circuit of the auxiliary source transformer.

[0125] The auxiliary power supply component Aux Power Controller is connected between the seventh-arm circuit and the ninth-arm circuit.

[0126] Traditional flyback power supplies typically include a control circuit, a feedback circuit, a power device, and a transformer. When the switch is turned on, energy can be stored in the inductor on the primary side of the transformer. When the switch of the same name terminal of the transformer is turned off, the drain voltage is higher than the input voltage, and the voltage on the secondary side of the transformer is higher than ground, so the diode conducts to supply power to the output capacitor and the load.

[0127] It can be seen that the auxiliary source unit 25 with a three-arm circuit topology in this embodiment can significantly simplify the circuit structure compared with traditional flyback power supplies. Of course, in an alternative embodiment, the server power module of the present application can also use a flyback power supply as the auxiliary source unit 25, which is not limited herein.

[0128] Furthermore, the detailed circuit topology of the auxiliary source unit 25 exemplified below Figures 13 - 14 will be exemplified and elaborated.

[0129] The auxiliary source unit 25 may include a third inductor L3, a fifth input terminal HV+, a sixth input terminal HV-, a fifth output terminal LV+, and a sixth output terminal LV-.

[0130] The seventh-arm circuit includes a third winding P1 and a twelfth switch Q12. Among them, the twelfth switch Q12 includes a control terminal, a first terminal, and a second terminal.

[0131] The eighth-arm circuit includes a fourth winding N1.

[0132] The ninth-arm circuit includes a thirteenth switch Q13 and a fourteenth switch Q14. Among them, the thirteenth switch Q13 includes a control terminal, a first terminal, and a second terminal. The fourteenth switch Q14 includes a control terminal, a first terminal, and a second terminal.

[0133] The auxiliary power supply component Aux Power Controller includes an input terminal and an output terminal.

[0134] The input terminal of the Auxiliary Power Controller is connected to the control terminal of the twelfth switching device Q12. The output terminal of the Auxiliary Power Controller is connected to the control terminals of the thirteenth switching device Q13 and the fourteenth switching device Q14.

[0135] One end of the third winding P1 is connected to the fifth input terminal HV+. The other end of the third winding P1 is connected to the first end of the twelfth switching device Q12. The second end of the twelfth switching device Q12 is connected to the sixth input terminal HV-.

[0136] One end of the fourth winding N1 is connected to the first end of the thirteenth switching device Q13. The second end of the thirteenth switching device Q13 and the first end of the fourteenth switching device Q14 are connected to one end of the third inductor L3. The other end of the third inductor L3 is connected to the fifth output terminal LV+. The second end of the fourteenth switching device Q14 is connected to the sixth output terminal LV-.

[0137] Thus, in this embodiment, the efficiency and power density of the auxiliary power module can be improved.

[0138] Please refer to Figure 15 , Figure 15 which is a schematic structural diagram of an embodiment of the control unit of the present application.

[0139] In one embodiment, the control unit 21 includes a first sub-unit 211 and a second sub-unit 212; the first sub-unit 211 is connected to the second sub-unit 212, and the first sub-unit 211 is connected to the first voltage conversion unit 23; the second sub-unit 212 is connected to the second voltage conversion unit 24.

[0140] That is to say, in this embodiment, the control unit 21 is subdivided according to the control object relying on the control unit 21, which is beneficial to ensuring the control reliability of a single sub-unit.

[0141] Further, please refer to Figure 16 , Figure 16 which is a schematic structural diagram of another embodiment of the control unit of the present application.

[0142] As Figure 6As shown in the example, the first sub-unit 211 and the second sub-unit 212 are connected through a communication bus. For example, the communication bus in the server power supply may include Uart (Universal Asynchronous Receiver / Transmitter), SPI (Full-duplex Synchronous Serial Bus), I2C (Inter-Integrated Circuit, Two-wire Serial Bus), etc. For example, communication between the first sub-unit 211 and the second sub-unit 212 can be achieved through Uart.

[0143] The first sub-unit 211 can be used as the PRIMARY Side. The first sub-unit 211 can implement the switching control of the power factor correction circuit (PFC), that is, the power factor correction (PFC) driver; it can also implement the monitoring and protection of the voltage and current of the AC input power supply, the switching control of the inrush current protection switch, communication functions (such as Uart, SPI, I2C), etc.

[0144] The second sub-unit 212 can be used as the SECONDARY Side, which can implement the switching control of the second voltage conversion unit 24 (DC / DC, DC to DC), the monitoring and protection of the voltage and current of the DC power supply, the fan control and over-temperature of the server power supply, communication functions (such as Uart, SPI, I2C) control, etc.

[0145] Among them, the first sub-unit 211 and the second sub-unit 212 can select an MCU (Microcontroller Unit, micro control unit 21), etc.

[0146] In addition, the first switch Q1 to the fourteenth switch Q14 exemplified in the foregoing can be MOS transistors. Therefore, the control end can be equivalent to the gate, the first end can be equivalent to the drain, and the second end can be equivalent to the source. The first winding S1, the second winding S2, the third winding P1, and the fourth winding N1 can be inductors.

[0147] The embodiment of the present application provides a server power supply. Combining the structure and working principle of the server power supply, the device is described in detail.

[0148] Please refer to Figure 17 , Figure 17 which is a schematic structural diagram of an embodiment of the server power supply of the present application.

[0149] In one embodiment, the server power supply includes a server power supply module, a power supply housing 31, a control component 32, a filtering component 33, a first voltage conversion component 34, a second voltage conversion component 35, and an auxiliary power source component 36 as described in the above embodiments.

[0150] Among them, as described in the foregoing, the server power supply module includes a control unit, a filtering unit, a first voltage conversion unit, a second voltage conversion unit, and an auxiliary power source unit.

[0151] In this embodiment, the control component 32 integrates the control unit. The filtering component 33 integrates the filtering unit. The first voltage conversion component 34 integrates the first voltage conversion unit. The second voltage conversion component 35 integrates the second voltage conversion unit. The auxiliary power source component 36 integrates the auxiliary power source unit.

[0152] Meanwhile, the control component 32, the filtering component 33, the first voltage conversion component 34, the second voltage conversion component 35, and the auxiliary power source component 36 are respectively independent packaged components and are detachably arranged in the power supply housing 31.

[0153] That is to say, in this embodiment, the server power supply not only decouples the circuit topology into five units, but also decouples the internal devices of the server power supply into five independent components at the physical device level. Namely, the control component 32, the filtering component 33, the first voltage conversion component 34, the second voltage conversion component 35, and the auxiliary power source component 36. In this way, the layout of the components of the server power supply can be mainly arranged as a whole with components, which is equivalent to placing each component block with the components inside each component as the carrier, can make full use of the internal space of the server power supply, and is also conducive to air circulation and heat dissipation through the air between and inside the components, can significantly improve the working efficiency of the server power supply and is conducive to extending the service life of the server power supply.

[0154] Moreover, it usually takes 8 to 14 months from the design layout of the server power supply to mass production, and the power density of the server power supply is about 100W / in 3 (watts per cubic inch), which is difficult to improve. However, through the modular decoupling and re-layout of the server power supply in this application, the efficiency from layout to mass production can be improved, the design cycle can be reduced to about 6 months to complete, and the power density of the server power supply can be increased to 130W / in 3Meanwhile, this application can also improve the stability of the server power supply, reduce the occurrence of voltage dips or interruptions in the input voltage to the server, and thus reduce the trouble for maintenance personnel to troubleshoot problems on-site at the server. Meanwhile, this application proposes a three-arm circuit topology, which can significantly simplify the circuit design of the server power supply and the power topology of the server power supply. The three-arm circuit topology will be elaborated in detail later. The following will first give examples of the implementation methods of the server power supply assembly.

[0155] Please refer to Figure 18 and Figure 19 , Figure 18 which is a schematic structural diagram of an embodiment of the server power supply assembly of this application, Figure 19 and Figure 18 which is a schematic external view of an embodiment of the server power supply of the server power supply assembly shown.

[0156] In one embodiment, as Figure 18 exemplarily shown in, the server power supply can be assembled with a power supply fan (PSUFan), an appliance input socket (AC Inlet), a first voltage conversion component (PFC Module), a second voltage conversion component (main isolation output) [High Eff DC / DC Power Module (Main Isolation output)], a second voltage conversion component (optional output) [High Eff DC / DC Power Module (Optional output)], an auxiliary power component (Auxiliary Power Module), a filtering component (EMI Module), a control unit (PSU Control Module), a capture unit signal output (Output Cap), a special power MOS transistor (Oring FET), a gold finger (Golden Finger), etc. Thus, the external appearance of the server power supply can be as Figure 19 exemplarily shown in.

[0157] Please refer to Figure 20 and Figure 21 , Figure 20 which is a schematic structural diagram of another embodiment of the server power supply assembly of this application, Figure 21 and Figure 20 which is a schematic external view of an embodiment of the server power supply of the server power supply assembly shown.

[0158] In one embodiment, as Figure 20As shown in the example, the server power supply can be equipped with a power supply fan (PSUFan), an appliance input socket (AC Inlet), a first voltage conversion component (PFC Module), a first voltage conversion component, a second voltage conversion component (main isolation output) [High Eff DC / DC Power Module (Main Isolationoutput)], an auxiliary power component (Auxiliary Power Module), a filtering component (EMI Module), a control unit (PSUControl Module), a captured unit signal output (Output Cap), a special power MOS transistor (Oring FET), a gold finger (Golden Finger), etc. Thus, the appearance of the server power supply can be as shown in Figure 21 the example.

[0159] An embodiment of the present application provides a server. The server includes: a server body and a server power supply as in the above embodiment.

[0160] The following takes Figure 20 and Figure 21 the server power supply shown as an example to illustrate the structure of the server of the present application and the relevant technical service area.

[0161] Please refer to Figure 22a and Figure 22b , Figure 22a which is a schematic structural diagram of an embodiment of the first server in the related art, Figure 22b and

[0162] wherein, Figure 22a and Figure 22b the server size exemplified in is 2U. The 2U size means a height of 3.5 inches (88.9 mm), a width of 19 inches (482.6 mm), and a depth usually between 25 and 30 inches (635 to 762 mm).

[0163] It can be seen that Figure 22a in the first server in the related art shown in, only 6 full PCIe ( Figure 22a 6PCIe described in) and 4 half PCIe ( Figure 22a 4LPCIe described in) can be carried. However, in the server structure shown in Figure 22b , in this embodiment, due to the modification of the appearance of the server power supply and the change of the arrangement positions of the server power supply and the fan. Therefore, the present application can carry 6 full PCIe ( Figure 22b 6PCIe described in) and 4 full PCIe ( Figure 22b 4PCIe described in).

[0164] Among them, the input / output card is the IO (Input / Output) card.

[0165] Please refer to Figure 23a and Figure 23b , Figure 23a which is a schematic structural diagram of an embodiment of a second server in the related art, Figure 23b and

[0166] Among them, Figure 23a and Figure 23b the server sizes exemplified in are 4U. The 4U size means the height is about 17.78 cm (7 inches); the width is about 19 inches (482.6 mm); the depth is variable according to design requirements, and the common ranges include 650 mm, 700 mm, etc., and the depth of some industrial control chassis can reach 584 mm.

[0167] It can be seen that Figure 23a in the related art second server shown in, the four server power supplies in it occupy all the space below the full PCIe graphics processor configuration diagram, that is, the four server power supplies are as wide as the full PCIe graphics processor configuration. However, as Figure 23b shown in the server structure shown in, in this embodiment, due to the modification of the appearance of the server power supply and the change of the arrangement position of the server power supply, Figure 23a the single input / output card in can be increased to 3 input / output cards in the server of this application, and a water block can also be introduced to further improve the heat dissipation effect of the server.

[0168] As described in the foregoing, in the server power supply module of this application, the circuit of each unit is designed as a three-stage or three-arm circuit topology. The following will elaborate on the three-arm circuit topology in this application in detail.

[0169] Please refer to Figure 24 , Figure 24 which is a schematic structural diagram of an embodiment of the three-arm circuit topology of this application.

[0170] In one embodiment, the basic unit circuit of this application adopts a three-arm or three-stage composition to form the required topology unit. Among them, the basic unit includes a first voltage conversion unit, a second voltage conversion unit and an auxiliary source unit adopting a three-arm type, and a filtering unit adopting a three-stage type can also be used. Hereinafter, the three-arm type and the three-stage type are collectively referred to as the three-arm type, and no obvious distinction will be made anymore. Generally speaking, the three-arm circuit topology can be realized by the series connection and parallel connection of three arm-type circuits.

[0171] The three-arm circuit topology can include a one-arm circuit IA, a two-arm circuit IIA and a three-arm circuit IIIA.

[0172] The following is an example of the arm circuit in this application. Please refer to Figures 25a - 25g , Figures 25a - 25g which is a schematic diagram of the example circuit of the arm circuit in this application.

[0173] Specifically, as Figure 25a exemplarily shown in Figure 25a , the arm circuit can be a half-bridge or full-bridge topology circuit. For example, it can be composed of two MOS transistors connected in series. As

[0174] shown in Figure 25b , the second terminal of the MOS transistor EQ1 is connected to the first terminal of the MOS transistor EQ2. Figure 25b Alternatively, as

[0175] shown in Figure 25c , the arm circuit can be a charge pump type conversion circuit. For example, it can be composed of two capacitors connected in series. As Figure 25c shown in

[0176] the capacitor EC1 is connected in series with the capacitor EQ2. Figure 25d Alternatively, as Figure 25d shown in

[0177] the arm circuit can be a voltage multiplier circuit or a rectifier circuit. For example, it can be composed of two diodes connected in series. As Figure 25e shown in Figure 25e the anode of the diode ED1 is connected to the cathode of the diode ED2.

[0178] Alternatively, as Figure 25f shown in Figure 25f the arm circuit can be a resonant filter circuit or an inductive filter circuit. For example, it can be composed of two inductors connected in series. As

[0179] shown in Figure 25g the inductor EL1 is connected to the first terminal of the MOS transistor EQ3. Figure 25g Alternatively, as

[0180] Furthermore, the three-arm circuit topologies can be connected in series or in parallel, and different converter topologies can be formed according to input and output requirements.

[0181] In this application, three topologies can be exemplified, namely, I-H type, parallel type, and series-parallel hybrid type.

[0182] Among them, I and H respectively represent the letter I and the letter H, which are used for the structures between the arm circuits to be similar to the letters I and H. In other words, two of the three-arm circuit topologies can be connected in series through components such as inductors, so as to be applicable to application scenarios of high-voltage and low-voltage conversion. It can usually be applied to Buck Boost converters, cascaded Boost converters, or cascaded Buck converters, so as to achieve flexible output voltage and be applicable to high-gain conversion.

[0183] Specifically, please refer to Figures 26a - 26c , Figures 26a - 26c which is a schematic diagram of the three-arm circuit topology in the I-H mode of this application.

[0184] As Figure 26a exemplarily shown in, the three-arm circuit topology is a cascaded Boost converter, and the series connection of the conversion stages can achieve the conversion from low voltage to high voltage, that is, voltage boost. Among them, one-arm circuit IA, inductor, and two-arm circuit IIA are used as "H", and three-arm circuit IIIA is used as "I".

[0185] As Figure 26b exemplarily shown in, the three-arm circuit topology is a cascaded Buck converter, and the series connection of the conversion stages is used to achieve the conversion from high voltage to low voltage, that is, voltage buck. Among them, one-arm circuit IA, inductor, and two-arm circuit IIA are used as "H", and three-arm circuit IIIA is used as "I".

[0186] As Figure 26c exemplarily shown in, the three-arm circuit topology is a Buck Boost converter, and the series connection of the conversion stages can achieve bidirectional conversion between high voltage and low voltage. Among them, one-arm circuit IA, inductor, and two-arm circuit IIA are used as "H", and three-arm circuit IIIA is used as "I".

[0187] The parallel three-arm circuit topology means that the three arm circuits are connected in parallel. It is usually applicable to systems with large current requirements, such as multi-phase parallel converters, which can improve current capacity and can relatively easily perform current sharing control, and is applicable to high-power application scenarios. As described in the previous text of this application Figure 7 and Figure 8The first voltage conversion unit is one of the applications of the parallel three-arm circuit topology. Among them, the first voltage conversion unit includes a Boost stage and a bridge conversion stage to achieve three-arm bridge-less (rectifier bridge) active power factor correction.

[0188] The following further exemplifies the parallel three-arm circuit topology of this application. Please refer to Figure 27 , Figure 27 which is a schematic diagram of the parallel mode three-arm circuit topology of this application.

[0189] As Figure 27 exemplified and shown, the three-arm circuit topology is a switching inductor stage, an inductor stage, and a Buck stage to achieve three-arm isolated buck conversion.

[0190] The series-parallel hybrid three-arm circuit topology can combine series and parallel methods to obtain more flexible conversion capabilities. For example, it can be applied to isolated DC / DC conversion, etc. The series-parallel hybrid three-arm circuit topology has relatively adaptable performance, and it can meet the requirements of high voltage and high current at the same time. As described in the previous text of this application Figure 10 and Figure 11 the second voltage conversion unit is one of the applications of the series-parallel hybrid three-arm circuit topology. Among them, the second voltage conversion unit includes two levels of H connection and one level of Buck parallel connection to achieve three-arm full-bridge LLC.

[0191] The following takes another implementation manner of the second conversion unit of this application to exemplify and elaborate on the one-arm circuit, two-arm circuit, and power factor correction principle of its three-arm circuit.

[0192] The following combines Figures 28 - 30 to exemplify and elaborate on the detailed working principle of the second voltage conversion unit in this application. Figure 28 is a schematic diagram of the structure of one arm and two arms of the first voltage conversion unit of this application, Figures 29a - 29b is Figure 28 the conduction schematic diagram of the first voltage conversion unit shown under different power supply input voltages, Figure 30 is Figure 28 the waveform schematic diagram of one embodiment of the first voltage conversion unit shown.

[0193] As Figure 29a exemplified and shown, the factor correction component in this embodiment is a totem pole PFC structure. Compared with traditional PFC, the power conduction path can only include one diode instead of two diodes, and the Sic (silicon carbide) diode is replaced by a MOSFET to achieve synchronous rectification. At the same time, the power conduction loss can also be reduced. Optionally, ordinary MOSFETs can also be used to replace YD1 and YD2 (as in this application Figure 9The first switching element Q1 and the second switching element Q2) exemplified therein are used to further improve efficiency.

[0194] As Figure 29b During the positive half-cycle of the power input voltage exemplified in [reference], the inductor current causes the first diode YD1 to be cut off and the second diode YD2 to be turned on. It can be divided into two modes. The body diode of the switching transistor, the third switching element Q3, conducts to supply power to the load, and the energy stored in the inductor decreases. When the fourth switching element Q4 is turned on, the body diode of the third switching element Q3 is cut off, and the energy stored in the inductor increases. Thus, the fourth switching element Q4 of the switching transistor and the body diode of the third switching element Q3 form a Boost PFC structure.

[0195] As Figure 30 During the negative half-cycle of the power input voltage exemplified in [reference], the inductor current causes the second diode YD2 to be cut off and the first diode YD1 to be turned on. The functions of the two switching transistors change when the polarity of the input voltage changes. The fourth switching element Q4 changes from being turned on to store energy in the inductor to its body diode conducting to supply power to the load, while the function change of the third switching element Q3 is exactly the opposite. Therefore, the functions of the two switching transistors, namely the third switching element Q3 and the fourth switching element Q4, are complementary and switch with the change of polarity.

[0196] Combined with Figure 30 It can be seen from the waveform diagram exemplified in [reference] that in this embodiment, the factor correction device is easy to achieve high-power output (for example, 1 kW to 5 kW), improve the harmonic distortion (THD), and can improve the power conversion efficiency.

[0197] The above has introduced in detail a server power module, a server power supply, and a server provided by the present application. Specific examples are used in this article to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the method and its core idea of the present application. It should be noted that for those of ordinary skill in the art of this technology, without departing from the principle of the present application, several improvements and modifications can still be made to the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A server power module, characterized in that: The server power module comprises: A control unit, used for outputting a control signal; A filtering unit, connected to the control unit, for inputting an AC input power supply and filtering the input power supply; a first voltage conversion unit, connected to the filtering unit and the control unit, for converting the filtered input power into a DC intermediate power supply based on the control signal, and performing power factor correction on the intermediate power supply; wherein the power factor correction means adjusting the phases of the voltage and the current to match; a second voltage conversion unit, connected to the first voltage conversion unit and the control unit, and configured to convert the intermediate power supply into a system power supply for supplying power to the server; The auxiliary power supply unit is connected to the first voltage conversion unit and is used to convert the intermediate power supply into auxiliary power supply to supply power to internal devices of the server power supply.

2. The server power module according to claim 1, characterized in that: The first voltage conversion unit includes: a factor correction circuit, a first arm circuit, a second arm circuit and a third arm circuit; The first arm circuit, the second arm circuit, the factor correction circuit and the third arm circuit are connected in parallel with each other in sequence; the first arm circuit is used to input the input power supply, and the input power supply is processed by the first arm circuit, the second arm circuit, the factor correction circuit and the third arm circuit to form the intermediate power supply.

3. The server power module according to claim 2, characterized in that: The first voltage conversion unit includes a first input terminal, a second input terminal, a first output terminal and a second output terminal; The factor correction circuit includes a factor correction element and a correction switch element; wherein the correction switch element includes a fixed connection end, a first connection end and a second connection end; The fixed connection end is connected to the first input end through the first arm circuit, and is also connected to the second input end through the second arm circuit; the first connection end is connected to the factor correction element, and the second connection end is connected to the first output end and the second output end; When the fixed connection end is connected to the first connection end, the factor correction component performs the power factor correction.

4. The server power module according to claim 3, characterized in that: The first voltage conversion unit further includes a first guide member, a second guide member and a sine wave output terminal; The first arm circuit includes a first switch element and a second switch element; wherein the first switch element includes a control end, a first end and a second end; the second switch element includes a control end, a first end and a second end; The second arm circuit includes a third switch element and a fourth switch element; wherein the third switch element includes a control end, a first end and a second end; and the fourth switch element includes a control end, a first end and a second end; The third arm circuit includes a first inductor and a fifth switch; wherein the fifth switch includes a control end, a first end and a second end; The factor correction element is connected to the control end of the first switch element, the control end of the second switch element, the control end of the third switch element, the control end of the fourth switch element, and the control end of the fifth switch element; The first end of the first switch element and the first end of the third switch element are connected to the fixed connection end; the second end of the first switch element and the first end of the second switch element are connected to the first input end; The second end of the second switch element and the second end of the fourth switch element are connected to the second output end; the second end of the third switch element and the first end of the fourth switch element are connected to the second input end; One end of the first inductor is connected to the second connection end and the first output end, and the other end of the first inductor and the first end of the fifth switch are connected to the sine wave output end through the first guide member; wherein the first guide member is used to control the power supply from the other end of the first inductor to the sine wave output end; The first output end is connected to the sine wave output end through the second guide member; wherein the second guide member is used to control the power supply from the first output end to the sine wave output end.

5. The server power module according to claim 2, characterized in that: The first voltage conversion unit includes a first capacitor, a second capacitor, a first output terminal, a second output terminal and a sine wave output terminal; The first capacitor is connected between the first output terminal and the second output terminal; The second capacitor is connected between the sinusoidal wave output terminal and the second output terminal.

6. The server power module according to claim 1, characterized in that: The second voltage conversion unit includes an inductor component, a fourth arm circuit, a fifth arm circuit and a sixth arm circuit; The fourth arm circuit and the fifth arm circuit are connected via the inductor component; the inductor component, the fourth arm circuit and the fifth arm circuit serve as the primary circuit of the resonant converter; and the sixth arm circuit serves as the secondary circuit of the resonant converter.

7. The server power module according to claim 6, characterized in that: The second voltage conversion unit includes a first ballast, a second ballast, a voltage control element, a third input terminal, a fourth input terminal, a third output terminal and a fourth output terminal; wherein the third input terminal and the fourth input terminal are connected to the first voltage conversion unit; The fourth arm circuit includes a sixth switch element and a seventh switch element; wherein the sixth switch element includes a control end, a first end and a second end; the seventh switch element includes a control end, a first end and a second end; The fifth arm circuit includes an eighth switch element and a ninth switch element; wherein the eighth switch element includes a control end, a first end and a second end; and the ninth switch element includes a control end, a first end and a second end; The sixth arm circuit includes a first winding, a second winding, a tenth switch element and an eleventh switch element; wherein the tenth switch element includes a control end, a first end and a second end; the eleventh switch element includes a control end, a first end and a second end; The voltage control element comprises an input end and an output end; wherein the input end of the voltage control element is connected to the control end of the sixth switch element, the control end of the seventh switch element, the control end of the eighth switch element, and the control end of the ninth switch element; and the output end of the voltage control element is connected to the control end of the tenth switch element and the control end of the eleventh switch element; The first end of the sixth switch element and the first end of the eighth switch element are connected to the third input end; The second end of the sixth switch element and the first end of the seventh switch element are connected to one end of the inductor component; The second end of the seventh switch element and the second end of the ninth switch element are connected to the fourth input end; The second end of the eighth switch element and the first end of the ninth switch element are connected to the other end of the inductor component; One end of the first winding is connected to the first end of the tenth switch element, the other end of the first winding and one end of the second winding are connected to the third output end; the other end of the second winding is connected to the first end of the eleventh switch element; The second end of the tenth switch element is connected to one end of the first ballast; the second end of the eleventh switch element is connected to one end of the second ballast; The other end of the first ballast and the other end of the second ballast are connected to the fourth output end.

8. The server power module according to claim 6, characterized in that: The inductor assembly includes a third capacitor, a resonant inductor and a second inductor connected in series in sequence; the third capacitor is connected to the fourth arm circuit; the second inductor is connected to the fifth arm circuit; The second voltage conversion unit further includes a fourth capacitor, a third output terminal and a fourth output terminal, and the fourth capacitor is connected between the third output terminal and the fourth output terminal.

9. The server power module according to claim 1, characterized in that: The auxiliary source unit includes an auxiliary power supply, a seventh arm circuit, an eighth arm circuit and a ninth arm circuit; The seventh arm circuit serves as a primary circuit of the auxiliary source transformer; The eighth arm circuit is connected in parallel with the ninth arm circuit to serve as a secondary circuit of the auxiliary source transformer; The auxiliary power supply is connected between the seventh arm-type circuit and the ninth arm-type circuit.

10. The server power module according to claim 9, characterized in that: The auxiliary source unit includes a third inductor, a fifth input terminal, a sixth input terminal, a fifth output terminal and a sixth output terminal; The seventh arm circuit includes a third winding and a twelfth switch element; wherein the twelfth switch element includes a control end, a first end and a second end; The eighth arm circuit includes a fourth winding; The ninth arm circuit includes a thirteenth switch element and a fourteenth switch element; wherein the thirteenth switch element includes a control end, a first end and a second end; the fourteenth switch element includes a control end, a first end and a second end; The auxiliary power supply comprises an input end and an output end; The input end of the auxiliary power supply is connected to the control end of the twelfth switch element; the output end of the auxiliary power supply is connected to the control end of the thirteenth switch element and the control end of the fourteenth switch element; One end of the third winding is connected to the fifth input end, the other end of the third winding is connected to the first end of the twelfth switch element; the second end of the twelfth switch element is connected to the sixth input end; One end of the fourth winding is connected to the first end of the thirteenth switch element, the second end of the thirteenth switch element and the first end of the fourteenth switch element are connected to one end of the third inductor, and the other end of the third inductor is connected to the fifth output terminal; the second end of the fourteenth switch element is connected to the sixth output terminal.

11. The server power module according to claim 1, characterized in that: The filtering unit includes a first-order filtering circuit, a second-order filtering circuit and a third-order filtering circuit; the first-order filtering circuit is connected to the second-order filtering circuit, and the second-order filtering circuit is connected to the third-order filtering circuit; Among them, the filtering frequency band of the first-order filtering circuit is lower than the filtering frequency band of the second-order filtering circuit, and the filtering frequency band of the second-order filtering circuit is lower than the filtering frequency band of the third-order filtering circuit.

12. The server power module according to claim 11, characterized in that: The filtering unit comprises a seventh input terminal, an eighth input terminal, a ninth input terminal, a seventh output terminal and an eighth output terminal; The first-order filter circuit includes a first electromagnetic suppression capacitor, a first transient voltage suppression tube, and a first filter; the first electromagnetic suppression capacitor is connected between the seventh input terminal and the eighth input terminal, and the first transient voltage suppression tube is connected in parallel with the first electromagnetic suppression capacitor; the two connecting ends of the first side of the first filter are respectively connected to the two ends of the first transient voltage suppression tube; The second-order filtering circuit includes a second electromagnetic suppression capacitor, a second filter, and a third electromagnetic suppression capacitor; The two connection ends on the second side of the first filter are respectively connected to the two ends of the second electromagnetic suppression capacitor; the two connection ends on the first side of the second filter are respectively connected to the two ends of the second electromagnetic suppression capacitor; the two connection ends on the second side of the second filter are respectively connected to the two ends of the third electromagnetic suppression capacitor; The third-order filtering circuit includes a third filter, a fourth electromagnetic suppression capacitor, a second transient voltage suppression tube, a first common-mode suppression capacitor and a second common-mode suppression capacitor; The two connection ends of the first side of the third filter are respectively connected to the two ends of the third electromagnetic suppression capacitor; the two connection ends of the second side of the third filter are respectively connected to the two ends of the fourth electromagnetic suppression capacitor; the fourth electromagnetic suppression capacitor is connected in parallel with the second transient voltage suppression tube; One end of the second transient voltage suppression tube and one end of the first common mode suppression capacitor are connected to the seventh output end; The other end of the first common mode suppression capacitor and one end of the second common mode suppression capacitor are both connected to the ninth input terminal and grounded; The other end of the second common-mode suppression capacitor and the other end of the second transient voltage suppression tube are connected to the eighth output end.

13. The server power module according to claim 1, characterized in that: The control unit includes a first subunit and a second subunit; the first subunit is connected to the second subunit, the first subunit is connected to the first voltage conversion unit; the second subunit is connected to the second voltage conversion unit.

14. A server power supply, characterized in that: The server power supply comprises: The server power module according to any one of claims 1 to 13; wherein the server power module comprises a control unit, a filter unit, a first voltage conversion unit, a second voltage conversion unit and an auxiliary source unit; Power supply housing; A control component integrating the control unit; A filter assembly integrating the filter unit; A first voltage conversion component, integrating the first voltage conversion unit; A second voltage conversion component, integrating the second voltage conversion unit; an auxiliary source assembly integrating the auxiliary source unit; The control component, the filter component, the first voltage conversion component, the second voltage conversion component and the auxiliary source component are respectively independent packaged components and are detachably arranged in the power supply housing.

15. A server, characterized in that: The server comprises: Server body; The server power supply as described in claim 14 is arranged in the server body.

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