Server power supply module, server power supply, and server

Abstract

The present application discloses a server power supply module, a server power supply, and a server, relating to the field of computer technologies. The internal components of the server power supply are decoupled, and according to the functions of the internal components of the server power supply, the internal components 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 components of the server power supply are realized, enabling the circuit units of each part to be responsible for the corresponding server power supply functions. Moreover, the first voltage conversion circuit can also adjust the phases of both the voltage and the current to achieve power factor correction for intermediate power supply, which can improve the electrical conversion efficiency. Thus, the technical problem of chaotic internal components in the server power supply in the related art is solved, and the decoupling and functional integration of the internal components of the server are achieved, which is beneficial to improving the server power supply management efficiency and can also improve the technical effect of the electrical conversion efficiency.

Description

Technical Field

[0001] This application relates to the field of computer technologies, and in particular, to a server power supply 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 supply 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, and the power supply of the server power supply is a necessary operating condition for the operation of the server, 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, and thus there is a problem of relatively chaotic internal components of the server power supply. Summary of the Invention

[0004] This application provides a server power supply 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 supply module, which 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 unit is used to output a control signal; the filtering unit is connected to the control unit and is used to input AC 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 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; 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 used 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 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: a server power supply module, a power supply housing, a control component, a filtering component, a first voltage conversion component, a second voltage conversion component, and an auxiliary power supply component as described in the above 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 a server power supply as described in the above embodiments.

[0008] With the present application, since the internal components of the server power supply are decoupled, and according to the functions of the internal components of the server power supply, the internal components 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 components 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 the current to achieve power factor correction for intermediate power supply, and can improve the electrical conversion efficiency. Therefore, the technical problem of chaotic internal components of the server power supply can be solved, the decoupling and function integration of the internal components of the server can be achieved, which is beneficial to improving the server power supply management efficiency and can also improve the technical effect of the 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;

[0011] Figure 2 is a schematic structural diagram of an embodiment of the server power supply module of the present application;

[0012] Figure 3 is a schematic structural diagram of another embodiment of the server power supply module of the present application;

[0013] Figure 4 is a schematic structural diagram of an embodiment of the filtering unit of the present application;

[0014] Figure 5 is Figure 4 The structural schematic diagram of an embodiment of the encapsulated filtering unit shown;

[0015] Figure 6 The schematic diagram of the application scenario of an embodiment of the filtering unit of the present application;

[0016] Figure 7 The structural schematic diagram of an embodiment of the first voltage conversion unit of the present application;

[0017] Figure 8 The structural schematic diagram of another embodiment of the first voltage conversion unit of the present application;

[0018] Figure 9 The structural schematic diagram of an embodiment of the encapsulated first voltage conversion unit of the present application;

[0019] Figure 10 The structural schematic diagram of an embodiment of the second voltage conversion unit of the present application;

[0020] Figure 11 The structural schematic diagram of another embodiment of the second voltage conversion unit of the present application;

[0021] Figure 12 The structural schematic diagram of an embodiment of the encapsulated second voltage conversion unit of the present application;

[0022] Figure 13 The structural schematic diagram of an embodiment of the auxiliary power source unit of the present application;

[0023] Figure 14 is Figure 13 The structural schematic diagram of an embodiment of the encapsulated auxiliary power source unit shown;

[0024] Figure 15 The structural schematic diagram of an embodiment of the control unit of the present application;

[0025] Figure 16 The structural schematic diagram of another embodiment of the control unit of the present application;

[0026] Figure 17 The structural schematic diagram of an embodiment of the server power supply of the present application;

[0027] Figure 18 The structural schematic diagram of an embodiment of the server power supply assembly of the present application;

[0028] Figure 19 is Figure 18 The external view schematic diagram of an embodiment of the server power supply of the server power supply assembly shown;

[0029] Figure 20This is a structural diagram of another embodiment of the server power supply assembly of the present application;

[0030] Figure 21 yes Figure 20 A schematic diagram of the appearance of an embodiment of a server power supply assembled with a server power supply is shown;

[0031] Figure 22a This is a structural diagram of an embodiment of a first server in the related art;

[0032] Figure 22b This is a schematic diagram of the structure of an embodiment of the server of this application;

[0033] Figure 23a This is a structural diagram of an embodiment of a second server in the related art;

[0034] Figure 23b This is a schematic diagram of the structure of another embodiment of the server of the present application;

[0035] Figure 24 This is a schematic structural diagram of an embodiment of a three-arm circuit topology of the present application;

[0036] Figure 25a - Figure 25g This is an example circuit diagram of the arm circuit of the present application;

[0037] Figure 26a - Figure 26c This is a schematic diagram of the IH mode three-arm circuit topology of the present application;

[0038] Figure 27 This is a schematic diagram of the three-arm circuit topology in parallel mode of the present application;

[0039] Figure 28 This is a schematic structural diagram of the first and second arms of the first voltage conversion unit of the present application;

[0040] Figure 29a - Figure 29b yes Figure 28 The schematic diagram of the conduction of the first voltage conversion unit at different power input voltages is shown;

[0041] Figure 30 yes Figure 28 A waveform diagram of an embodiment of the first voltage conversion unit is shown. DETAILED DESCRIPTION

[0042] The following will be combined with the accompanying drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0043] It should be noted that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "lateral", "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. Therefore, it 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 any one of them. 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.

[0044] 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.

[0045] Embodiments of the present application provide 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.

[0046] The application scenarios involved in the present application, namely servers, will be described preferentially 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, smart phones, etc.) in the network. Generally speaking, servers have the ability to undertake response service requests, undertake services, and guarantee services.

[0047] 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 development, design, assembly, maintenance, and other aspects.

[0048] Please refer to Figure 1 , Figure 1 which is a schematic structural diagram of a server power supply in the related art.

[0049] As Figure 1 exemplified in

[0050] 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.

[0051] 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 (MOSFET). DC / DC represents a DC-to-DC power supply.

[0052] The above-mentioned components and parts jointly form the components of the server power supply for joint development, design, assembly, maintenance, etc.

[0053] 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.

[0054] 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.

[0055] 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.

[0056] The control unit 21 is used to output a control signal.

[0057] 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.

[0058] 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. Wherein, power factor correction means adjusting the phases of the voltage and current to match.

[0059] 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.

[0060] 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 components of the server power supply.

[0061] 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.

[0062] Thus, when the server power supply obtains an input power supply from an external input (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 components can be used. The intermediate power supply processed by the first voltage conversion unit 23 has a relatively high voltage, so it can be stepped down by the second voltage conversion unit to obtain a system power supply for supplying power to the server.

[0063] 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.

[0064] Among them, BMC represents the Baseboard Management Controller, which can use sensors to monitor the server or the status of other hardware drive devices.

[0065] BIOS represents the Basic Input Output System, which is a standard firmware interface. 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.

[0066] 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.

[0067] 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.

[0068] Moreover, in this embodiment, when the first voltage conversion unit 23 converts the input power supply into the 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.

[0069] 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. 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:

[0070] P = U * I * COSθ Equation 1-1

[0071] 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.

[0072] Please refer to Figure 3 , Figure 3 which is a schematic structural diagram of another embodiment of the server power module of the present application.

[0073] 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 Examples of 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 shown in

[0074] 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.

[0075] 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-.

[0076] 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-.

[0077] 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'.

[0078] 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

[0079] 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 is Figure 4 a schematic structural diagram of an embodiment of the encapsulation of the filtering unit shown in

[0080] 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.

[0081] 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.

[0082] Thus, in this embodiment, the frequency band range that the filtering unit 22 can filter can be expanded, thereby enhancing 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.

[0083] Generally understood, according to the working frequency and interference characteristics of the server power supply, filtering units 22 such as EMI filters can be divided into low-pass filters, high-pass filters, band-pass filters, and band-stop filters. 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, 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, 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 larger the insertion loss, the more attenuation, and the better the effect of the filtering unit 22.

[0084] 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).

[0085] The detailed circuit structure of the filter unit 22 in this embodiment will be described below.

[0086] 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'.

[0087] 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.

[0088] 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 ends on the first side of the first filter LF1 are respectively connected to both ends of the first transient voltage suppression diode TVS1.

[0089] The second-order filter circuit includes a second electromagnetic suppression capacitor CX2, a second filter LF2, and a third electromagnetic suppression capacitor CX3.

[0090] The two connection ends 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 ends 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 ends on the second side of the second filter LF2 are respectively connected to both ends of the third electromagnetic suppression capacitor CX3.

[0091] 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.

[0092] The two connection ends 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 ends 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.

[0093] 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'.

[0094] The other end of the first common-mode suppression capacitor CY1 and one end of the second common-mode suppression capacitor CY2 are grounded.

[0095] 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'.

[0096] 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.

[0097] 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.

[0098] 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.

[0099] When selecting the X capacitors, their ESR (equivalent series resistance) can be concerned, and for the Y capacitors, their withstand voltage and leakage current characteristics can be considered.

[0100] 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.

[0101] 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 transition: 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 corner frequency f of the third-order filter unit 22 CCM is: f CCM = 10^(-V CMloss / 100) x f CM = 18.9 KHz.

[0102] From f CCM calculate CX1, CX2, CX3, Cx4, LF1, LF2, LF3. The specific formula is as follows:

[0103] f ccm = 1 / (2π√(3&CX1 * CX2 * CX3 * CX4) * (LF1 * LF2 * LF3))) Equation 2-1

[0104] Let CX1 + CX2 + CX3 + CX4 = 4 uF, and assume CX1 = CX2 = CX3 = CX4 = 1 uF (microfarad), then the expression of LF1 is as follows:

[0105] Equation 2-2

[0106] Therefore, from the above formula, it can be obtained that LF1 = LF2 = LF3 = 10 μH (microhenry).

[0107] The selection of Y capacitors is such that they can release to the other side through the Y capacitors 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, if 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, etc., 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.

[0108] Please refer to Figure 6 , Figure 6 which is a schematic diagram of the application scenario of an embodiment of the filtering unit of the present application.

[0109] Figure 6 It is exemplified in

[0110] 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.

[0111] Please refer to Figures 7 to 9 in combination with Figure 7 which is a schematic diagram of the structure of an embodiment of the first voltage conversion unit of the present application, Figure 8 which is a schematic diagram of the structure of another embodiment of the first voltage conversion unit of the present application, Figure 9 which is a schematic diagram of the structure of an embodiment of the package of the first voltage conversion unit of the present application.

[0112] In one embodiment, the first voltage conversion unit 23 includes a factor correction circuit, a first arm circuit, a second arm circuit, and a third arm circuit.

[0113] 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.

[0114] 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 power factor inside 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, and the utilization rate of the input power supply can be improved.

[0115] Moreover, different from the related art in which power factor correction is achieved through a boost topology circuit structure and a 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.

[0116] Furthermore, the detailed circuit structure of the first voltage conversion unit 23 in this embodiment is illustrated by way of example below.

[0117] 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-.

[0118] 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.

[0119] The fixed connection end is connected to the first input terminal L’ through the first arm circuit and is also connected to the second input terminal N’ through the 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-.

[0120] 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.

[0121] Further, the first voltage conversion unit 23 further includes a first guide member D1, a second guide member D2, and a sine wave output terminal VBulk.

[0122] The first arm circuit includes a first switching device Q1 and a second switching device Q2. Among them, the first switching device Q1 includes a control terminal, a first terminal, and a second terminal. The second switching device Q2 includes a control terminal, a first terminal, and a second terminal.

[0123] 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.

[0124] 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.

[0125] 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.

[0126] 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'.

[0127] 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'.

[0128] 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 guide member D1. Among them, the first guide member 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.

[0129] The first output terminal HV+ is connected to the sine wave output terminal VBulk through the second guide member D2. Among them, the second guide member D2 is used to control the power supply to be guided from the first output terminal HV+ to the sine wave output terminal VBulk.

[0130] 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 turn on and off the fifth switching device Q5, thereby realizing active current waveform shaping. Thus, in this embodiment, the electrical conversion efficiency can be increased to more than 98%.

[0131] 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 thousands of W.

[0132] 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.

[0133] 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−.

[0134] Among them, the first capacitor CR can be a high-voltage capacitor, and its parameters can be about 800uF / 630V (volts). The second capacitor can be a Bulk (large-capacity) capacitor, and its parameters can be about 1000uF / 630V.

[0135] Please refer to Figures 10 to 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.

[0136] In one embodiment, the second voltage conversion unit 24 includes an inductor component, a fourth arm circuit, a fifth arm circuit, and a sixth arm circuit.

[0137] The fourth arm circuit and the fifth arm circuit are connected through the inductor component; the inductor component, 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.

[0138] It can be seen that in this embodiment, the second voltage conversion unit 24 is also constructed as a three-arm circuit topology, which changes the circuit architecture of the original full-bridge LLC (Inductor-Inductor-Capacitor) resonant converter. It can improve the voltage conversion efficiency while significantly reducing 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.

[0139] Further, the detailed circuit topology of the second voltage conversion unit 24 exemplified in ​ will be exemplified and described below.

[0140] The second voltage conversion unit 24 includes a first ballast OL1, a second ballast OL2, a voltage control component TALLCController, 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.

[0141] 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.

[0142] 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.

[0143] 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.

[0144] The voltage control component TALLC Controller includes an input terminal and an output terminal. Among them, the input terminal of the voltage control component TALLCController 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.

[0145] 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+.

[0146] The second end of the sixth switching element Q6 and the first end of the seventh switching element Q7 are connected to one end of the inductance component.

[0147] The second end of the seventh switching element Q7 and the second end of the ninth switching element Q9 are connected to the fourth input terminal HV-.

[0148] The second end of the eighth switching element Q8 and the first end of the ninth switching element Q9 are connected to the other end of the inductance component.

[0149] One end of the first winding S1 is connected to the first end of the tenth switching element SR1. 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 element SR2.

[0150] The second end of the tenth switching element SR1 is connected to one end of the first ballast OL1. The second end of the eleventh switching element SR2 is connected to one end of the second ballast OL2.

[0151] 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-.

[0152] 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 the density of the component devices can be increased by about 150% compared with the traditional full-bridge LLC resonant converter.

[0153] Among them, the tenth switching element SR1 and the eleventh switching element SR2 can be MOS transistors. Different from the diodes in the traditional full-bridge LLC resonant converter, the efficiency can be further improved. Moreover, a conversion integrated circuit can be formed with the transformer.

[0154] Optionally, the inductance component includes a third capacitor C3, a resonance inductor Lm, and a second inductor L2 connected in series in sequence.

[0155] The third capacitor C3 is connected to the fourth-arm circuit; the second inductor L2 is connected to the fifth-arm circuit.

[0156] The second voltage conversion unit 24 further includes a fourth capacitor, a third output terminal LV+, and a fourth output terminal LV-. The fourth capacitor is connected between the third output terminal LV+ and the fourth output terminal LV-.

[0157] That is to say, in this embodiment, it can at least be like​ The main transformer 101 and the resonant inductor 103 exemplified therein are integrated into the second voltage conversion unit 24, so as to realize the decoupling of devices for the server power supply based on the functions of the components, and at the same time, realize the integration of the devices into the unit.

[0158] Please refer to ​ and ​ , ​ which is a schematic structural diagram of an embodiment of the auxiliary source unit of the present application. ​ is ​ a schematic structural diagram of an embodiment of the encapsulation of the auxiliary source unit shown.

[0159] 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.

[0160] The seventh-arm circuit serves as the primary circuit of the auxiliary source transformer.

[0161] The eighth-arm circuit and the ninth-arm circuit are connected in parallel and serve as the secondary circuit of the auxiliary source transformer.

[0162] The auxiliary power supply component Aux Power Controller is connected between the seventh-arm circuit and the ninth-arm circuit.

[0163] Traditional flyback power supplies usually include a control circuit, a feedback circuit, power devices, 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 the ground, so the diode conducts to supply power to the output capacitor and the load.

[0164] 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 supply module of the present application can also use a flyback power supply as the auxiliary source unit 25, which is not limited herein.

[0165] Further, the detailed circuit topology of the auxiliary source unit 25 exemplified in ​ will be exemplified and described below.

[0166] 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-.

[0167] 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.

[0168] The eighth arm circuit includes a fourth winding N1.

[0169] The ninth arm circuit includes a thirteenth switching device Q13 and a fourteenth switching device Q14. Among them, the thirteenth switching device Q13 includes a control terminal, a first terminal, and a second terminal. The fourteenth switching device Q14 includes a control terminal, a first terminal, and a second terminal.

[0170] The auxiliary power supply component Aux Power Controller includes an input terminal and an output terminal.

[0171] The input terminal of the auxiliary power supply component Aux Power Controller is connected to the control terminal of the twelfth switching device Q12. The output terminal of the auxiliary power supply component Aux Power Controller is connected to the control terminals of the thirteenth switching device Q13 and the fourteenth switching device Q14.

[0172] 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 terminal of the twelfth switching device Q12. The second terminal of the twelfth switching device Q12 is connected to the sixth input terminal HV-.

[0173] One end of the fourth winding N1 is connected to the first terminal of the thirteenth switching device Q13, the second terminal of the thirteenth switching device Q13 and the first terminal 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 terminal of the fourteenth switching device Q14 is connected to the sixth output terminal LV-.

[0174] Thus, in this embodiment, the efficiency and power density of the auxiliary power module can be improved.

[0175] Please refer to ​ , ​ which is a schematic structural diagram of an embodiment of the control unit of the present application.

[0176] 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.

[0177] That is to say, in this embodiment, the control object relying on the control unit 21 is subdivided for the control unit 21, which is beneficial to ensuring the control reliability of a single sub-unit.

[0178] Further, please refer to ​ , ​ which is a schematic structural diagram of another embodiment of the control unit of the present application.

[0179] As ​ exemplified in the above, 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), etc. For example, communication between the first sub-unit 211 and the second sub-unit 212 can be achieved through Uart.

[0180] The first sub-unit 211 can serve 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, and the control of communication functions (such as Uart, SPI, I2C), etc.

[0181] The second sub-unit 212 can serve as the SECONDARY Side, and can implement the switching control of the second voltage conversion unit 24 (DC / 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, and the control of communication functions (such as Uart, SPI, I2C), etc.

[0182] Among them, the first sub-unit 211 and the second sub-unit 212 can select an MCU (Microcontroller Unit) 21, etc.

[0183] In addition, the first switch Q1 to the fourteenth switch Q14 exemplified in the foregoing can be MOS transistors. Therefore, the control terminal can be equivalent to the gate, the first terminal can be equivalent to the drain, and the second terminal 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.

[0184] The embodiment of the present application provides a server power supply, and the device is described in detail in combination with the structure and working principle of the server power supply.

[0185] Please refer to ​ , ​ which is a schematic structural diagram of an embodiment of the server power supply of the present application.

[0186] 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.

[0187] 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.

[0188] 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.

[0189] At the same time, 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 packaging components and are detachably arranged in the power supply housing 31.

[0190] 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. That is, 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 component layout 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.

[0191] Moreover, it usually takes 8 to 14 months for the server power supply design layout 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 of 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 of the server, and thus reduce the trouble of on-site maintenance personnel to troubleshoot problems on 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 implementation method of the server power supply assembly is exemplified below with priority.

[0192] Please refer to ​ and ​ , ​ which is a schematic structural diagram of an embodiment of the server power supply assembly of this application, ​ is ​ a schematic appearance diagram of an embodiment of the server power supply of the server power supply assembly shown.

[0193] In one embodiment, as ​ 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 appearance of the server power supply can be as ​ exemplarily shown in.

[0194] Please refer to ​ and ​ , ​ which is a schematic structural diagram of another embodiment of the server power supply assembly of this application, ​ is ​ a schematic appearance diagram of an embodiment of the server power supply of the server power supply assembly shown.

[0195] In one embodiment, as ​As exemplified in the figure, 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 capture 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 ​ as exemplified in the figure.

[0196] 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.

[0197] The following takes ​ and ​ 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 by way of example.

[0198] Please refer to ​ and ​ , ​ which is a schematic structural diagram of an embodiment of a first server in the related art, ​ and

[0199] wherein, ​ and ​ the server size exemplified in the figure 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).

[0200] It can be seen that ​ in the first server in the related art shown in the figure, only 6 full PCIe ( ​ 6PCIe described in the figure) and 4 half PCIe ( ​ 4LPCIe described in the figure) can be carried. However, in the server structure shown in ​ the figure, 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 ( ​ 6PCIe described in the figure) and 4 full PCIe ( ​ 4PCIe described in the figure).

[0201] Among them, the input / output card is the IO (Input / Output) card.

[0202] Please refer to ​ and ​ , ​ which is a schematic structural diagram of an embodiment of the second server in the related art, ​ and which is a schematic structural diagram of another embodiment of the server in the present application.

[0203] Among them, ​ and ​ the server sizes exemplified in are 4U. The 4U size means a height of about 17.78 cm (7 inches); a width of about 19 inches (482.6 mm); the depth is variable according to design requirements, and common ranges include 650 mm, 700 mm, etc., and the depth of some industrial control chassis can reach 584 mm.

[0204] It can be seen that ​ 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 shown in ​ in the server structure shown in, in this embodiment, due to the modification of the appearance of the server power supply, the arrangement position of the server power supply is changed. ​ In the present application server, the single input / output card in can be increased to 3 input / output cards, and a water block can also be introduced to further improve the heat dissipation effect of the server.

[0205] As described in the foregoing, in the server power supply module of the present application, the circuits of each unit are designed as a three-stage or three-arm circuit topology. The three-arm circuit topology in the present application will be elaborated in detail below.

[0206] Please refer to ​ , ​ which is a schematic structural diagram of an embodiment of the three-arm circuit topology of the present application.

[0207] In one embodiment, the basic unit circuit of the present 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 that adopt a three-arm type, and a filtering unit that can also adopt a three-stage type. 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. Generally speaking, the three-arm circuit topology can be realized by the series connection and parallel connection of three-arm circuits.

[0208] The three-arm circuit topology can include a one-arm circuit IA, a two-arm circuit IIA, and a three-arm circuit IIIA.

[0209] The following is an example of the arm circuit in this application. Please refer to ​ , ​ which is a schematic diagram of an example circuit of the arm circuit in this application.

[0210] Specifically, as ​ exemplarily shown in ​ , 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

[0211] Alternatively, as ​ exemplarily shown in ​ , the arm circuit can be a charge pump type conversion circuit. For example, it can be composed of two capacitors connected in series. As

[0212] Alternatively, as ​ exemplarily shown in ​ , 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

[0213] Alternatively, as ​ exemplarily shown in ​ , 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

[0214] Alternatively, as ​ exemplarily shown in ​ , the arm circuit can be a Boost (step-up) function circuit or a Buck function circuit. For example, it can be composed of an inductor and a MOS transistor connected in series. As

[0215] Alternatively, as ​ exemplarily shown in ​ , the arm circuit can be a filter element circuit. For example, it can be composed of an inductor. As

[0216] Alternatively, as ​ exemplarily shown in ​ , the arm circuit can be an energy storage element circuit. For example, it can be composed of a capacitor. As

[0217] Furthermore, the three-arm circuit topologies can be connected in series or parallel, and different converter topologies can be formed according to input and output requirements.

[0218] In this application, three topologies can be exemplified, namely, I-H type, parallel type, and series-parallel hybrid type.

[0219] 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 to be applicable to application scenarios of high-voltage and low-voltage conversion. It can usually be applied to BuckBoost converters, cascade Boost converters, or cascade Buck converters to achieve flexible output voltages and is also applicable to high-gain conversion.

[0220] Specifically, please refer to ​ , ​ which is a schematic diagram of the three-arm circuit topology in the I-H mode of this application.

[0221] As ​ exemplarily shown in, the three-arm circuit topology is a cascade Boos 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 act as "H", and three-arm circuit IIIA acts as "I".

[0222] As ​ exemplarily shown in, the three-arm circuit topology is a cascade 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 act as "H", and three-arm circuit IIIA acts as "I".

[0223] As ​ exemplarily shown in, the three-arm circuit topology is a BuckBoost 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 act as "H", and three-arm circuit IIIA acts as "I".

[0224] 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 multiphase 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 ​ and ​The 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.

[0225] The following further exemplifies the parallel three-arm circuit topology of the present application. Please refer to ​ , ​ which is a schematic diagram of the parallel mode three-arm circuit topology of the present application.

[0226] As ​ 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.

[0227] 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 the present application ​ and ​ 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.

[0228] The following takes another embodiment of the second conversion unit of the present application to exemplify and elaborate on the one-arm circuit, two-arm circuit, and power factor correction principle of its three-arm circuit.

[0229] The following combines ​ to exemplify and elaborate on the detailed working principle of the second voltage conversion unit in the present application. ​ which is a schematic diagram of the structure of one arm and two arms of the first voltage conversion unit of the present application, ​ is ​ the conduction schematic diagram of the first voltage conversion unit shown under different power supply input voltages, ​ is ​ the waveform schematic diagram of one embodiment of the first voltage conversion unit shown.

[0230] As ​ 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 the present application ​The first switching device Q1 and the second switching device Q2) exemplified therein are used to further improve efficiency.

[0231] As ​ During the positive half-cycle of the power input voltage exemplified therein, 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 device Q3, conducts to supply power to the load, and the energy stored in the inductor decreases. When the fourth switching device Q4 is turned on, the body diode of the third switching device Q3 is cut off, and the energy stored in the inductor increases. Thus, the fourth switching device Q4 of the switching transistor and the body diode of the third switching device Q3 form a Boost PFC structure.

[0232] As ​ During the negative half-cycle of the power input voltage exemplified therein, 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 device 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 device Q3 is exactly the opposite. Therefore, the functions of the two switching transistors, namely the third switching device Q3 and the fourth switching device Q4, are complementary and switch with the change of polarity.

[0233] Combined with ​ From the waveform diagram exemplified therein, it can be seen that in this embodiment, the factor certificate is easy to achieve high-power output (for example, 1 kW to 5 kW), improve the harmonic distortion degree (THD), and can improve the point conversion efficiency.

[0234] The above has introduced in detail a server power module, a server power supply, and a server provided by this application. Specific examples are used herein to elaborate on the principle and implementation manner of this application. The description of the above embodiments is only used to help understand the method and its core idea of this application. It should be noted that for those of ordinary skill in the art of this technology, without departing from the principle of this application, several improvements and modifications can still be made to this application, and these improvements and modifications also fall within the protection scope of the claims of this application.

Claims

1. A server power supply module, characterized in that, The server power supply module includes: A control unit for outputting a control signal; A filtering unit connected to the control unit for inputting 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 for converting the intermediate power supply into a system power supply for powering the server; An auxiliary power supply unit connected to the first voltage conversion unit for converting the intermediate power supply into an auxiliary power supply to power the internal components of the server power supply; The second voltage conversion unit includes an inductor assembly, a fourth arm circuit, a fifth arm circuit, and a sixth arm circuit; 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 a resonant converter; the sixth arm circuit serves as the secondary circuit of the resonant converter; The second voltage conversion unit includes a first ballast, a second ballast, a voltage control component, 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 switching component and a seventh switching component; wherein, the sixth switching component includes a control terminal, a first terminal, and a second terminal; the seventh switching component includes a control terminal, a first terminal, and a second terminal; The fifth arm circuit includes an eighth switching component and a ninth switching component; wherein, the eighth switching component includes a control terminal, a first terminal, and a second terminal; the ninth switching component includes a control terminal, a first terminal, and a second terminal; The sixth arm circuit includes a first winding, a second winding, a tenth switching component, and an eleventh switching component; wherein, the tenth switching component includes a control terminal, a first terminal, and a second terminal; the eleventh switching component includes a control terminal, a first terminal, and a second terminal; The voltage control component includes an input terminal and an output terminal; wherein, the input terminal of the voltage control component is connected to the control terminals of the sixth switching component, the seventh switching component, the eighth switching component, and the ninth switching component; the output terminal of the voltage control component is connected to the control terminals of the tenth switching component and the eleventh switching component; The first terminal of the sixth switching component and the first terminal of the eighth switching component are connected to the third input terminal; The second terminal of the sixth switching component and the first terminal of the seventh switching component are connected to one end of the inductor assembly; The second terminal of the seventh switching component and the second terminal of the ninth switching component are connected to the fourth input terminal; The second terminal of the eighth switching component and the first terminal of the ninth switching component are connected to the other end of the inductor assembly; One end of the first winding is connected to the first end of the tenth switching element, and the other end of the first winding and one end of the second winding are connected to the third output terminal; the other end of the second winding is connected to the first end of the eleventh switching element; The second end of the tenth switching element is connected to one end of the first ballast; the second end of the eleventh switching 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 terminal.

2. The server power supply module according to claim 1, wherein The first voltage conversion unit includes: a power 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 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 input 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 the intermediate power supply.

3. The server power supply module according to claim 2, wherein The first voltage conversion unit includes a first input terminal, a second input terminal, a first output terminal, and a second output terminal; The power factor correction circuit includes a power factor correction element and a correction switching element; wherein, the correction switching 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 terminal through the first arm circuit and is also connected to the second input terminal through the second arm circuit; the first connection end is connected to the power factor correction element, and the second connection end is connected to the first output terminal and the second output terminal; So that when the fixed connection end is connected to the first connection end, the power factor correction element performs power factor correction.

4. The server power supply module according to claim 3, wherein, The first voltage conversion unit further includes a first guiding element, a second guiding element, and a sine wave output terminal; The first arm circuit includes a first switching element and a second switching element; wherein, the first switching element includes a control end, a first end, and a second end; the second switching element includes a control end, a first end, and a second end; The second arm circuit includes a third switching element and a fourth switching element; wherein, the third switching element includes a control end, a first end, and a second end; the fourth switching element includes a control end, a first end, and a second end; The third arm circuit includes a first inductor element and a fifth switching element; wherein, the fifth switching element includes a control end, a first end, and a second end; The power factor correction element is connected to the control ends of the first switching element, the second switching element, the third switching element, the fourth switching element, and the fifth switching element; The first end of the first switching element and the first end of the third switching element are connected to the fixed connection end; the second end of the first switching element and the first end of the second switching element are connected to the first input terminal; The second end of the second switching element and the second end of the fourth switching element are connected to the second output terminal; the second end of the third switching element and the first end of the fourth switching element are connected to the second input terminal; 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 guiding member; wherein, the first guiding member is used to control the power supply to be guided 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 guiding member; wherein, the second guiding member is used to control the power supply to be guided from the first output end to the sine wave output end.

5. The server power supply module according to claim 2, wherein The first voltage conversion unit includes a first capacitor, a second capacitor, a first output end, a second output end, and a sine wave output end; The first capacitor is connected between the first output end and the second output end; The second capacitor is connected between the sine wave output end and the second output end.

6. The server power supply module according to claim 1, 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 end, and a fourth output end, and the fourth capacitor is connected between the third output end and the fourth output end.

7. The server power supply module according to claim 1, wherein The auxiliary source unit includes an auxiliary power supply component, a seventh arm circuit, an eighth arm circuit, and a ninth arm circuit; The seventh arm circuit serves as the primary circuit of the auxiliary source transformer; The eighth arm circuit is connected in parallel with the ninth arm circuit and serves as the secondary circuit of the auxiliary source transformer; The auxiliary power supply component is connected between the seventh arm circuit and the ninth arm circuit.

8. The server power supply module according to claim 7, wherein The auxiliary source unit includes a third inductor, a fifth input end, a sixth input end, a fifth output end, and a sixth output end; The seventh arm circuit includes a third winding and a twelfth switch; wherein, the twelfth switch 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 and a fourteenth switch; wherein, the thirteenth switch includes a control end, a first end, and a second end; the fourteenth switch includes a control end, a first end, and a second end; The auxiliary power supply component includes an input end and an output end; The input end of the auxiliary power supply component is connected to the control end of the twelfth switch; the output end of the auxiliary power supply component is connected to the control ends of the thirteenth switch and the fourteenth switch; One end of the third winding is connected to the fifth input end, and the other end of the third winding is connected to the first end of the twelfth switch; the second end of the twelfth switch is connected to the sixth input end; One end of the fourth winding is connected to the first end of the thirteenth switch, the second ends of the thirteenth switch and the fourteenth switch are connected to one end of the third inductor, the other end of the third inductor is connected to the fifth output end; the second end of the fourteenth switch is connected to the sixth output end.

9. The server power supply module according to claim 1, wherein, 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 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.

10. The server power supply module according to claim 9, characterized in that, The filtering unit includes a seventh input terminal, an eighth input terminal, a ninth input terminal, a seventh output terminal, and an eighth output terminal; The first-order filtering circuit includes a first electromagnetic suppression capacitor, a first transient voltage suppression diode, 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 diode is connected in parallel with the first electromagnetic suppression capacitor; two connection terminals on the first side of the first filter are respectively connected to both ends of the first transient voltage suppression diode; The second-order filtering circuit includes a second electromagnetic suppression capacitor, a second filter, and a third electromagnetic suppression capacitor; Two connection terminals on the second side of the first filter are respectively connected to both ends of the second electromagnetic suppression capacitor; two connection terminals on the first side of the second filter are respectively connected to both ends of the second electromagnetic suppression capacitor; two connection terminals on the second side of the second filter are respectively connected to both 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 diode, a first common-mode suppression capacitor, and a second common-mode suppression capacitor; Two connection terminals on the first side of the third filter are respectively connected to both ends of the third electromagnetic suppression capacitor; two connection terminals on the second side of the third filter are respectively connected to both ends of the fourth electromagnetic suppression capacitor; the fourth electromagnetic suppression capacitor is connected in parallel with the second transient voltage suppression diode; One end of the second transient voltage suppression diode and one end of the first common-mode suppression capacitor are connected to the seventh output terminal; The other end of the first common-mode suppression capacitor and one end of the second common-mode suppression capacitor are 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 diode are connected to the eighth output terminal.

11. The server power supply module according to claim 1, wherein The control unit includes a first sub-unit and a second sub-unit; the first sub-unit is connected to the second sub-unit, and the first sub-unit is connected to the first voltage conversion unit; the second sub-unit is connected to the second voltage conversion unit.

12. A server power supply, characterized in that, The server power supply includes: The server power supply module according to any one of claims 1 to 11; 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 source unit; A power supply housing; A control component integrating the control unit; A filtering component integrating the filtering 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 component integrating the auxiliary source unit; The control component, the filtering 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.

13. A server, characterized in that, The server includes: A server body; The server power supply as described in claim 12, provided in the server body.

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