Power supply system and ICT equipment

Abstract

The present application provides a power supply system, which relates to the field of power supply. The power supply system can improve the power supply efficiency of the power supply to the service board in the ICT equipment. The power supply system includes: a first voltage conversion unit, which is an isolated voltage conversion unit, which is connected to the power supply and used to convert the voltage of the power supply into the power supply voltage of the service board, that is, the first voltage; a second voltage conversion unit, which is a non-isolated voltage conversion unit, which is deployed on the service board, and the second voltage conversion unit is used to convert the first voltage into the power supply voltage of the first load module on the service board, that is, the second voltage.

Description

Technical Field

[0001] The present application relates to the field of power supply, and in particular to a power supply system and information and communications technology (ICT) equipment. Background Art

[0002] With the continuous development of ICT, wider bandwidth, faster data transfer rate and shorter latency are driving the power capacity of ICT equipment to continue to rise. Therefore, in various ICT equipment, the challenges of power supply efficiency, heat dissipation and energy consumption of circuit systems are becoming increasingly severe.

[0003] Therefore, how to efficiently power the service boards in ICT equipment is a technical problem that needs to be solved urgently. Summary of the invention

[0004] The present application provides a power supply system that can improve the power supply efficiency of a service board (or circuit board, processing board, main board, etc.) in an ICT device.

[0005] This application provides the following technical solutions:

[0006] In a first aspect, the present application provides a power supply system, which is used to power at least one load module on a service board. The power supply system includes: a first voltage conversion unit and a second voltage conversion unit. Among them, the first voltage conversion unit is an isolated voltage conversion unit, which is connected to a power supply and used to convert the voltage of the power supply into a first voltage, and the first voltage is the power supply voltage of the service board. The second voltage conversion unit is a non-isolated voltage conversion unit, and the second voltage conversion unit is deployed on the service board. The second voltage conversion unit is connected to the first voltage conversion unit, and is used to convert the above-mentioned first voltage into a second voltage, and the second voltage is the power supply voltage of the first load module on the service board.

[0007] In the power supply system provided by the present application, the on-board power supply on the service board adopts a non-isolated voltage conversion unit, thereby improving the voltage conversion efficiency of the on-board power supply. Furthermore, since the height of the circuit of the non-isolated on-board power supply is relatively low, the on-board power supply and load module on the service board can adopt whole-board heat dissipation, thereby improving the heat dissipation efficiency of the service board.

[0008] In a possible design, the second voltage conversion unit includes a field effect transistor and a capacitor. Through this possible implementation, non-isolated voltage reduction of the second voltage conversion unit is achieved, and voltage conversion efficiency is improved.

[0009] In another possible design, the first voltage is greater than 12V.

[0010] In another possible design, the first load module is an optical module.

[0011] In another possible design, the power supply system further includes: a third voltage conversion unit and a fourth voltage conversion unit. The third voltage conversion unit is a non-isolated voltage conversion unit, which is deployed on a service board, connected to the first voltage conversion unit, and used to convert the first voltage into a third voltage. The fourth voltage conversion unit is a non-isolated voltage conversion unit, which is deployed on a service board, connected to the third voltage conversion unit, and used to convert the third voltage into a fourth voltage, which is the power supply voltage of the second load module on the service board.

[0012] In another possible design, the power of the second load module is less than or equal to a preset threshold.

[0013] In another possible design, the second load module is a low-power load.

[0014] By using a two-stage conversion on-board power supply composed of a third voltage conversion unit and a fourth voltage conversion unit to supply power to the load module, the voltage difference between the input voltage and the output voltage of the third voltage conversion unit can be reduced, and the voltage difference of the fourth voltage conversion unit can be reduced, thereby reducing the parameter requirements for the circuit elements in the on-board power supply, thereby saving costs (high parameter requirements for circuit elements lead to high production costs). The parameters of the circuit elements may be, for example, the input voltage and output voltage of the circuit elements.

[0015] In another possible design, the second voltage conversion unit and the first load module are cooled by a whole-plate heat sink, and the whole-plate heat sink covers the second voltage conversion unit and the first load module.

[0016] By dissipating heat for the second voltage conversion unit and the load module through the whole-board heat sink, the distance between the second voltage conversion unit and the load module can be effectively reduced, thereby reducing line loss and improving the power supply efficiency of the power supply system for the load module.

[0017] In another possible design, the value range of the first voltage includes 24V to 60V.

[0018] In another possible design, the value of the first voltage is 48V or 53.5V.

[0019] In a second aspect, the present application further provides an ICT device, the ICT device comprising a power supply system as provided in the first aspect and any possible implementation of any of the above-mentioned aspects, wherein the power supply system is used to supply power to a service board in the ICT device.

[0020] It can be understood that the implementation method of the power supply system included in the ICT device provided by the second aspect can refer to the description of the first aspect and its various implementation methods mentioned above, and the beneficial effects that can be achieved by the power supply system included in the ICT device provided by the second aspect can also refer to the beneficial effects of the first aspect and its various implementation methods mentioned above, which will not be repeated here.

[0021] In this application, the name of the power supply system does not limit the device or functional module itself. In actual implementation, these devices or functional modules may appear with other names. As long as the functions of each device or functional module are similar to those of this application, they fall within the scope of the claims of this application and their equivalent technologies.

[0022] These and other aspects of the present application will become more apparent from the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 Schematic diagram of the power supply system provided in the embodiment of the present application Figure 1 ;

[0024] Figure 2 Schematic diagram of the power supply system provided in the embodiment of the present application Figure 2 ;

[0025] Figure 3 Schematic diagram of the power supply system provided in the embodiment of the present application Figure 3 ;

[0026] Figure 4 Schematic diagram of the power supply system provided in the embodiment of the present application Figure 4 ;

[0027] Figure 5 Schematic diagram of the power supply system provided in the embodiment of the present application supplying power to the service board Figure 1 ;

[0028] Figure 6 A schematic diagram of a circuit for implementing a second voltage conversion unit provided in an embodiment of the present application;

[0029] Figure 7 Schematic diagram of the power supply system provided in the embodiment of the present application Figure 5 ;

[0030] Figure 8Schematic diagram of the power supply system provided in the embodiment of the present application supplying power to the service board Figure 2 ;

[0031] Fig. 9 Schematic diagram of the power supply system provided in the embodiment of the present application supplying power to the service board Figure 3 ;

[0032] Fig.10 A schematic diagram of the power supply system provided in the embodiment of the present application supplying power to a service board in practical application;

[0033] Fig.11 A schematic diagram of heat dissipation of the on-board power supply and load module provided in an embodiment of the present application. DETAILED DESCRIPTION

[0034] In the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0035] In the embodiments of the present application, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, "plurality" means two or more.

[0036] The term "at least one" in this application means one or more, and the term "multiple" in this application means two or more, for example, multiple second messages means two or more second messages. The terms "system" and "network" are often used interchangeably herein.

[0037] It should be understood that the terms used in the description of the various examples herein are only for describing specific examples and are not intended to be limiting. As used in the description of the various examples and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

[0038] It should also be understood that the term "and / or" used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items. The term "and / or" is a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.

[0039] It should also be understood that the term “comprise” (also known as “includes,” “including,” “comprises” and / or “comprising”) when used in this specification specifies the presence of stated features, integers, steps, operations, elements, and / or components, but does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0040] With the continuous development of ICT technology, ICT equipment with different functions and uses has emerged. ICT equipment includes service boards for implementing various service functions.

[0041] An embodiment of the present application provides a power supply system, which can improve the power supply efficiency of a power supply to a service board in an ICT device.

[0042] Furthermore, since the circuit part deployed on the service board in the power supply system is small in size and low in height, the space utilization rate on the service board is improved, that is, the capacity of the service board is effectively increased. In this way, the power supply system can meet the evolution requirements of large-capacity service boards.

[0043] refer to Figure 1 , Figure 1 The power supply system 10 provided in an embodiment of the present application is shown. The power supply system 10 is used to supply power to at least one service board in the above-mentioned ICT equipment. Among them, a service board may include at least one load module. Figure 1 As shown, the power supply system 10 is connected to an external power supply 101, and the power supply system 10 includes a first voltage conversion unit 102 and a second voltage conversion unit 103. Figure 1 The direction of the arrow shown in the figure indicates the direction of current flow.

[0044] The power supply 101 may be a power supply of a computer room where the ICT equipment is located. Optionally, the power supply 101 may be at least one of an alternating current (AC) power supply, a high voltage direct current (HVDC) power supply, or a low voltage direct current (LVDC) power supply. As an example, the voltage range of the AC power supply may be 100 to 240 Vac, the voltage range of the HVDC power supply may be 240 to 480 Vdc, and the voltage range of the LVDC power supply may be 40 to 70 Vdc.

[0045] The first voltage conversion unit 102 is an isolated voltage conversion unit. The first voltage conversion unit 102 can achieve isolated voltage conversion by using a magnetic isolation transformer. For example, the first voltage conversion unit 102 can be a coil transformer.

[0046] Specifically, the first voltage conversion unit 102 can be connected to the power supply 101 and used to convert the voltage of the power supply 101 into a first voltage. The first voltage is a bus voltage used to power the service board. In the embodiment of the present application, the first voltage is usually a voltage greater than 12V.

[0047] It can be seen that when the power supply 101 is an AC power supply or an HVDC power supply, the first voltage is less than the voltage of the power supply 101. When the power supply 101 is an LVDC power supply, the first voltage may be less than the voltage of the power supply 101 or greater than the voltage of the power supply 101, which is not limited.

[0048] Exemplarily, the value range of the first voltage may be between 24V and 60V, but is certainly not limited thereto.

[0049] As an example, the first voltage may be a commonly used 48V voltage or a 53.5V voltage. Of course, the first voltage may also be a 61V voltage.

[0050] In practical applications, the first voltage conversion unit 102 may be a power supply module (PSU) of an ICT device, thereby providing a bus voltage (i.e., a first voltage) for a service board. It is understandable that at least one PSU may be included in an ICT device. In other words, at least one first voltage conversion unit 102 may be included in an ICT device.

[0051] It should be noted that the first voltage conversion unit 102 is a direct current-direct current (DC-DC) voltage conversion circuit, that is, the input voltage of the first voltage conversion unit 102 is a direct current voltage, and the output first voltage is also a direct current voltage.

[0052] Optionally, if the power supply 101 is an AC power supply, then Figure 2 As shown, the first voltage conversion unit 102 includes an AC / DC rectifier module 1021 and a voltage conversion module 1022. The AC / DC rectifier module 1021 is connected to the power supply 101 and is used to convert the alternating current of the power supply 101 into direct current. The AC / DC rectifier module 1021 is also connected to the voltage conversion module 1022. In this way, the voltage conversion module 1022 can convert the direct current voltage rectified and output by the AC / DC rectifier module 1021 into a first voltage.

[0053] The voltage conversion module 1022 is an isolated voltage conversion module, and the voltage conversion module 1022 can achieve isolated voltage conversion by using a magnetic isolation transformer. For example, the voltage conversion module 1022 can be a coil transformer.

[0054] in, Figure 2 The direction of the arrow shown in the figure indicates the direction of current flow.

[0055] refer to Figure 1 The second voltage conversion unit 103 is a non-isolated voltage conversion unit. The second voltage conversion unit 103 can achieve non-isolated voltage conversion by using a non-isolated circuit including a switch device and a capacitor device. The second voltage conversion unit 103 is deployed on a service board.

[0056] Specifically, the second voltage conversion unit 103 can be connected to the first voltage conversion unit 102, and is used to convert the first voltage output by the first voltage conversion unit 102 into a second voltage. The second voltage is a voltage used to power a first load module on the service board. Here, the first load module is any one of the at least one load modules on the service board.

[0057] Exemplarily, the first load module may generally be an optical module on a service board.

[0058] Optionally, the second voltage is usually lower than the first voltage. That is, the second voltage conversion unit 103 is a circuit unit for voltage reduction.

[0059] In practical applications, the second voltage conversion unit 103 can be connected to the first voltage conversion unit 102 through a backplane. Figure 3The first voltage conversion unit 102 is connected to the backplane 104 and transmits the output first voltage to the backplane 104. The second voltage conversion unit 103 is connected to the backplane 104 and can obtain the first voltage from the backplane 104, and then convert the first voltage into the power supply voltage (i.e., the second voltage) required by the first load module on the service board.

[0060] If the number of the above-mentioned first conversion units 102 is m, the number of the second voltage conversion units 103 is n. Here, m and n are integers greater than 1 respectively. Among them, the n second voltage conversion units 103 can be n second voltage conversion units 103 deployed on the same service board, or can be n second voltage conversion units 103 deployed on multiple service boards, which is not limited to this. In this case, the backplane 104 can be used to provide the m first voltages output by the m first conversion units 102 to the n second voltage conversion units 103 in a balanced manner, thereby realizing balanced power supply to the load modules. Of course, the backplane 104 can also supply power to multiple load modules in an unbalanced manner, which is not limited in this application.

[0061] Exemplary, reference Figure 4 , Figure 4 The power supply system 10 shown includes m first voltage conversion units, namely, first voltage conversion unit 1, first voltage conversion unit 2, ..., and first voltage conversion unit m. The m first voltage conversion units convert the voltage of the power supply 101 into m first voltages and output them to the backplane 104. Figure 4 The power supply system 10 shown also includes n second voltage conversion units, namely, second voltage conversion unit 1, second voltage conversion unit 2, ..., and second voltage conversion unit n. In this case, the backplane 104 can provide the m first voltages output by the m first voltage conversion units to the n second voltage conversion units in a balanced manner according to the number of the first voltage conversion units and the second voltage conversion units, thereby realizing balanced power supply to the load modules respectively connected to the n second voltage conversion units. Figure 3 The direction of the arrow shown in the figure indicates the direction of current flow.

[0062] In one possible implementation, Figure 4 The n second voltage conversion units shown in the figure can be used to provide supply voltage for n first load modules. In this case, the n second voltage conversion units correspond to the n first load modules one by one. In this way, even if the second voltage conversion unit supplying power to a first load module fails, it will not affect the normal operation of other load modules.

[0063] In another possible implementation, Figure 4The n second voltage conversion units shown in can be used to provide power supply voltage for s first load modules. Wherein, s is an integer less than n. That is to say, in the power supply system 10, two or more second voltage conversion units can be used to power a load module. This embodiment of the application is not limited to this.

[0064] It can be understood that in the above two implementations, the power of the first load module is less than or equal to the output power of the second voltage conversion unit connected to the first load module.

[0065] For the sake of simplicity, the embodiments of the present application are described below by taking an example in which n second voltage conversion units are used to provide supply voltage for n first load modules, that is, the n second voltage conversion units correspond one-to-one to the n first load modules.

[0066] Exemplary, reference Figure 5 , the service board 105 includes n first load modules as an example for explanation. Figure 5 As shown, the service board 105 includes n first load modules, namely, first load module 1, first load module 2, ... and first load module n. The n first load modules can be provided with power supply voltages (i.e., second voltages) by n second voltage conversion units in the power supply system 10. Figure 5 As shown, the second voltage conversion unit 1 is connected to the first load module 1, and the second voltage conversion unit 1 is used to convert the first voltage extracted from the backplane 104 into the second voltage 1, and the second voltage 1 is the power supply voltage of the first load module 1. The second voltage conversion unit 2 is connected to the first load module 2, and the second voltage conversion unit 1 is used to convert the first voltage extracted from the backplane 104 into the second voltage 2, and the second voltage 2 is the power supply voltage of the first load module 2. The second voltage conversion unit n is connected to the first load module n, and the second voltage conversion unit 1 is used to convert the first voltage extracted from the backplane 104 into the second voltage n, and the second voltage n is the power supply voltage of the first load module n, etc.

[0067] As an example, refer to Figure 6 , Figure 6 FIG. 4 shows an implementation circuit of the second voltage conversion unit 103. Figure 6 As shown, the circuit includes 8 field effect transistors, namely field effect transistor Q1 to field effect transistor Q8. The circuit also includes 3 capacitors, namely capacitor C1 to capacitor C3.

[0068] Among them, Q1, Q3, Q5 and Q8 can be used as a group of switch units, namely switch unit group 1. Q2, Q4, Q6 and Q7 are used as the second group of switch units, namely switch unit group 2. In practical applications, by controlling the duty ratio of switch unit group 1 and switch unit group 2, the on-time ratio of switch unit group 1 and switch unit group 2 is 1:1. It should be noted that when switch unit group 1 is on, switch unit group 2 is off; when switch unit group 2 is on, switch unit group 1 is off.

[0069] Thus, when switch unit group 1 is turned on, i.e., Q1, Q3, Q5, and Q8 are turned on. At this time, switch unit group 2 is turned off, i.e., Q2, Q4, Q6, and Q7 are turned off. In this case, Figure 6 The circuit shown in (a) can be expressed as Figure 6 The circuit shown in (b) in FIG. At this time, the output voltage (i.e., the second voltage) Vo = Vc2-Vc3, Vo = Vin-Vc1. Where, Vin is the input voltage (i.e., the first voltage). Where, Figure 6 The direction of the arrow shown in (b) is the direction of current flow.

[0070] When switch unit group 2 is turned on, i.e. Q2, Q4, Q6 and Q7 are turned on. At this time, switch unit group 1 is turned off, i.e. Q1, Q3, Q5 and Q8 are turned off. In this case, Figure 6 The circuit shown in (a) can be expressed as Figure 6 The circuit shown in (c) in FIG. At this time, the output voltage (i.e., the second voltage) Vo = Vc3, Vo = Vc1-Vc2. It can be understood that in this case, Figure 6 The current in the circuit shown in (c) is the discharge current of capacitors C1, C2 and C3. Figure 6 The direction of the arrow shown in (c) is the direction of current flow.

[0071] In this case, under ideal conditions (for example, the on-state voltage of the field effect tube is 0), when Vc3 = Vo, then Vc2 = Vo + Vc3, that is, Vc2 = Vo + Vo = 2Vo. Then Vc1 = Vo + Vc2, that is, Vc1 = Vo + 2Vo = 3Vo. Then Vin = Vo + Vc1, that is, Vin = Vo + 3Vo = 4Vo. That is Figure 6 The implementation circuit of the second voltage conversion unit 103 shown in the figure realizes a 4:1 voltage reduction output.

[0072] In this way, by using the second voltage conversion unit 103 to power the load module on the service board, compared with the traditional technology, the solution provided in the embodiment of the present application can improve the voltage conversion efficiency to 98.5%.

[0073] It can be understood that the second voltage conversion unit 103 deployed on the service board can be called an on-board power supply in the power supply system 10 .

[0074] By adopting the above-mentioned power supply system 10 to power at least one load module on at least one service board in the ICT device, since the on-board power supply in the power supply system 10 adopts a non-isolated voltage conversion circuit, compared with the on-board power supply (i.e., the voltage conversion unit deployed on the service board in the prior art) adopting an isolated voltage conversion circuit, the solution provided in the embodiment of the present application can effectively improve the voltage conversion efficiency, thereby improving the efficiency of the power supply for the load module.

[0075] Optionally, in some other embodiments, the power supply system 10 provided in the embodiment of the present application further includes a third voltage conversion unit and a fourth voltage conversion unit. Figure 1 ,refer to Figure 7 ,exist Figure 7 The power supply system 10 shown also includes a third voltage conversion unit 701 and a fourth voltage conversion unit 702. The third voltage conversion unit 701 and the fourth voltage conversion unit 702 can be used together as an on-board power supply in the power supply system 10 and used to power the load module on the service board.

[0076] As an example, the third voltage conversion unit 701 and the fourth voltage conversion unit 702 can be used together as an on-board power supply in the power supply system 10 to power the second load module. The second load module is any load module on the service board. Optionally, the power of the second load module is less than or equal to a preset threshold. The embodiment of the present application does not limit the value of the preset threshold.

[0077] Exemplarily, the second load module may be a low-power load on a service board.

[0078] Specifically, the third voltage conversion unit 701 is connected to the first voltage conversion unit 102 through the backplane 104, and is used to convert the first voltage output by the first voltage conversion unit 102 into a third voltage. Here, the third voltage can be used as an intermediate bus voltage on the service board. As an example, the third voltage can generally be a commonly used 12V voltage.

[0079] Optionally, the third voltage is usually lower than the first voltage. That is, the third voltage conversion unit 701 is a circuit unit for voltage reduction.

[0080] Specifically, the third voltage conversion unit 701 may be a non-isolated voltage conversion unit. For other descriptions of the third voltage conversion unit 701, reference may be made to the description of the second voltage conversion unit 103, which will not be repeated here.

[0081] Of course, the third voltage conversion unit 701 may also be a conventional isolated intermediate bus converter (IBC), which will not be described in detail here.

[0082] The fourth voltage conversion unit 702 is connected to the third voltage conversion unit 701 and is used to convert the third voltage output by the third voltage conversion unit 701 into a fourth voltage. Here, the fourth voltage is the power supply voltage of the load module (eg, the second load module).

[0083] Optionally, the fourth voltage is usually lower than the third voltage. That is, the fourth voltage conversion unit 702 is a circuit unit for voltage reduction.

[0084] In the embodiment of the present application, the fourth voltage conversion unit 702 may be a non-isolated point-of-load (POL) voltage conversion unit, which will not be described in detail.

[0085] It can be understood that the third voltage output by the third voltage conversion unit 701 can be used as the input voltage of at least one fourth voltage conversion unit 702 and power at least one second load module. The at least one fourth voltage conversion unit 702 corresponds to the at least one second load module. The output power of the third voltage conversion unit 701 is greater than or equal to the power sum of the at least one second load module.

[0086] refer to Figure 8 , taking the service board 105 including n load modules as an example. Among them, the n load modules include j first load modules and k second load modules, j and k are both positive integers, and n=k+j. Among them, the j first load modules include first load modules 1, ..., and first load module j. The k second load modules include second load modules 1, ..., and second load module k.

[0087] like Figure 8 As shown, j second voltage conversion units are respectively connected to j first load modules, and respectively supply power to the j first load modules. For a specific description of j second voltage conversion units supplying power to j first load modules, please refer to Figure 5 The description in will not be repeated here.

[0088] like Figure 8As shown, the third voltage conversion unit 701 is connected to the backplane, and converts the first voltage output by the first voltage conversion unit 102 into a third voltage. The third voltage conversion unit 701 is also connected to k fourth voltage conversion units, and the k fourth voltage conversion units respectively convert the third voltage output by the third voltage conversion unit 701 into k fourth voltages, and the k fourth voltages are the supply voltages of the k second load modules. Among them, the k fourth voltage conversion units include fourth voltage conversion units 1, ..., fourth voltage conversion unit k. As shown Figure 8 As shown, the fourth voltage conversion unit 1 is used to convert the third voltage output by the third voltage conversion unit 701 into a fourth voltage 1, and the fourth voltage 1 is the power supply voltage of the second load module 1. The fourth voltage conversion unit k converts the third voltage output by the third voltage conversion unit 701 into a fourth voltage k, and the fourth voltage k is the power supply voltage of the second load module k.

[0089] It should be understood that Figure 8 In the power supply system 10 shown, the sum of the powers of the k second load modules is less than or equal to the output power of the third voltage conversion unit 701. If the sum of the powers of the k second load modules is greater than the output power of the third voltage conversion unit 701, the number of the third voltage conversion units 701 can be increased to provide power to the k second load modules.

[0090] refer to Fig. 9 , Fig. 9 The power supply system 10 shown includes two third voltage conversion units, namely a third voltage conversion unit 1 and a third power conversion unit 2. The power supply system 10 also includes k fourth voltage conversion units and k second load modules.

[0091] The third voltage conversion unit 1 is connected to p fourth voltage conversion units, and the output voltage of the p fourth voltage conversion units is the supply voltage of the p second load modules, wherein p is a positive integer and p is less than k. Here, the output power of the third voltage conversion unit 1 is greater than or equal to the power sum of the p second load modules. Fig. 9 As shown, p fourth voltage conversion units include fourth voltage conversion units 1, ..., fourth voltage conversion unit p. p second load modules include second load modules 1, ..., second load modules p. Among them, the fourth voltage conversion unit 1 is used to convert the third voltage output by the third voltage conversion unit 1 into a fourth voltage 1, and the fourth voltage 1 is the power supply voltage of the second load module 1. The fourth voltage conversion unit p is used to convert the third voltage output by the third voltage conversion unit 1 into a fourth voltage p, and the fourth voltage p is the power supply voltage of the second load module p.

[0092] The third voltage conversion unit 2 is connected to (kp) fourth voltage conversion units and supplies power to (kp) second load modules. Here, the output power of the third voltage conversion unit 2 is greater than or equal to the power sum of the (kp) second load modules. Fig. 9 As shown, (kp) fourth voltage conversion units include fourth voltage conversion units (p+1), ..., fourth voltage conversion unit k. (kp) second load modules include second load modules (p+1), ..., second load module k. Among them, the fourth voltage conversion unit (p+1) is used to convert the third voltage output by the third voltage conversion unit 2 into a fourth voltage (p+1), and the fourth voltage (p+1) is the power supply voltage of the second load module (p+1). The fourth voltage conversion unit k is used to convert the third voltage output by the third voltage conversion unit 1 into a fourth voltage k, and the fourth voltage k is the power supply voltage of the second load module k.

[0093] In this way, by using a two-stage conversion on-board power supply composed of a third voltage conversion unit and a fourth voltage conversion unit to supply power to the load module, the voltage difference between the input voltage and the output voltage of the third voltage conversion unit can be reduced, and the voltage difference of the fourth voltage conversion unit can be reduced, thereby reducing the parameter requirements for the circuit elements in the on-board power supply, thereby saving costs (high parameter requirements for circuit elements lead to high production costs). The parameters of the circuit elements may be, for example, the input voltage and output voltage of the circuit elements.

[0094] As an example, see Fig.10 , Fig.10 FIG. 2 shows a schematic diagram of the power supply system in actual application supplying power to the load modules of n service boards. Fig.10 As shown, the n service boards include service boards 1, ..., and service board n.

[0095] like Fig.10 As shown, the power supply system 100 is externally connected to a power supply 1001. The power supply 1001 can refer to the description of the power supply 101 above, which will not be repeated here.

[0096] like Fig.10 As shown, the power supply system 100 includes two first voltage conversion units, namely PSU 1 and PSU 2, and PSU 1 and PSU 2 respectively use transformers to implement isolated voltage conversion. PSU 1 and PSU 2 are respectively used to convert the input power of the power supply into a commonly used 53.5V voltage (i.e., the first voltage mentioned above) and transmit it to the backplane 1002.

[0097] The following description is made by taking the power supply system 100 supplying power to four load modules on the service board 1 as an example. Here, the four load modules include an optical module 1, an optical module 2, a low-power load 1 and a low-power load 2.

[0098] Specifically, Fig.10 As shown, the power supply system 100 also includes two second voltage conversion units, namely, a non-isolated voltage conversion module 1 and a non-isolated voltage conversion module 2. Among them, the non-isolated voltage conversion module 1 is connected to the backplane 1002, and is used to convert the 53.5V voltage on the backplane into the power supply voltage 3.3V of the optical module 1. Similarly, the non-isolated voltage conversion module 2 is connected to the backplane 1002, and is used to convert the 53.5V voltage on the backplane into the power supply voltage 3.3V of the optical module 2.

[0099] It can be seen that the onboard power supply of optical module 1 and optical module 2 only includes one level of voltage conversion. The power of optical module 1 and optical module 2 is 3.3×100, that is, 330W.

[0100] like Fig.10 As shown, the power supply system 100 also includes a third voltage conversion unit, namely a non-isolated voltage conversion module 3. The power supply system 100 also includes two fourth voltage conversion units, namely POL 1 and POL 2. Among them, the non-isolated voltage conversion module 3 is connected to the backplane 1002, and is used to convert the 53.5V voltage on the backplane into a commonly used 12V voltage. Then, POL 1 is connected to the non-isolated voltage conversion module 3, and is used to convert the 12V voltage output by the non-isolated voltage conversion module 3 into a power supply voltage of 1.0V for the low-power load 1. Similarly, POL 2 is connected to the non-isolated voltage conversion module 3, and is used to convert the 12V voltage output by the non-isolated voltage conversion module 3 into a power supply voltage of 1.0V for the low-power load 2.

[0101] It can be seen that for low-power loads, the power supply system 100 uses two-stage voltage conversion in the on-board power supply part. In this way, the power supply solution improves the power conversion efficiency while reducing the cost of components in the power supply system 100.

[0102] Understandably, Fig.10 The non-isolated voltage conversion module 3 shown in Figure 6 The voltage conversion unit implemented by the circuit shown may also be a traditional isolated IBC, which is not limited to this.

[0103] In addition, since the on-board power supply formed by the second voltage conversion unit, or the on-board power supply formed by the third voltage conversion unit and the fourth voltage conversion unit, are both non-isolated voltage conversion circuits, the on-board power supply in the power supply system in the embodiment of the present application has the characteristics of small size and low height.

[0104] For example, in practical applications, the second voltage conversion unit is used as an on-board power supply, and its volume is reduced by 50% compared with the traditional on-board power supply. Therefore, the small-volume on-board power supply can increase the capacity of the service single board. In addition, since the implementation circuit of the second voltage conversion unit can be designed to be ultra-thin below 4mm, a whole-board heat sink can be used on the service single board to dissipate heat for the on-board power supply (i.e., the second voltage conversion unit) and the load module, thereby improving the heat dissipation efficiency of the service single board.

[0105] Similarly, the implementation circuit of the on-board power supply composed of the third voltage conversion unit and the fourth voltage conversion unit has the characteristics of small size, so it can increase the capacity of the service single board. At the same time, the implementation circuit can also be designed to be ultra-thin below 4mm, so a whole-board heat sink can be used to dissipate heat for the on-board power supply (including the third voltage conversion unit and the fourth voltage conversion unit) and the load module, thereby improving the heat dissipation efficiency of the service single board.

[0106] Optionally, since the on-board power supply and load module on the business order adopt a whole-board heat sink for heat dissipation, in this case, by adopting the power supply system provided by the embodiment of the present application, the distance between the on-board power supply and the load module is smaller than the distance between the on-board power supply and the load module when the on-board power supply and the load module adopt a discrete heat dissipation solution in the prior art. In this way, the shorter distance between the on-board power supply and the load module can reduce the line loss between the on-board power supply and the load module, that is, further improve the efficiency of the power supply supplying power to the load module.

[0107] In the following, the heat dissipation of the on-board power supply is exemplarily described by taking the on-board power supply being the second voltage conversion unit and the load module being the first load module as an example.

[0108] As an example, refer to Fig.11 , Fig.11 The schematic diagram shows that the first load module 111 and the second voltage conversion unit 112 use the whole board heat dissipation. Among them, the service single board 110 may include the first load module 111, the second voltage conversion unit 112, and a printed circuit board (PCB) 113. Fig.11As shown in (a), the first load module 111 and the second voltage conversion unit 112 are both disposed on the front side of the PCB board 113. In this way, the heat sink 114 can be disposed on the side of the first load module 111 and the second voltage conversion unit 112 away from the PCB board 113 to achieve heat dissipation for the first load module 111 and the second voltage conversion unit 112 at the same time.

[0109] Optionally, since the second voltage conversion unit is small in size and low in height, the second voltage conversion unit can also be arranged on the back of the PCB board. In this way, not only can the capacity of the service board be improved, but also when the second voltage conversion unit and the first load module are symmetrical to the PCB board, the distance between the second voltage conversion unit and the first load module can be further reduced, thus reducing the line loss between the second voltage conversion unit and the first load module, thereby improving the efficiency of the power supply to the load module.

[0110] As an example, Fig.11 As shown in (b), the first load module 111 is arranged on the front of the PCB board 113, and the second voltage conversion unit 112 is arranged on the back of the PCB board 113. In addition, the first load module 111 and the second voltage conversion unit 112 are symmetrical to the PCB board 113. Of course, the second voltage conversion unit 112 can also be offset to the symmetrical position of the first load module 111 with the PCB board 113 as the symmetry plane. For example, the second voltage conversion unit 112 can be arranged at Fig.11 The position shown by the dotted frame 116 in (b) is not limited to comparison.

[0111] Understandably, Fig.11 The heat dissipation method and the setting method of the onboard power supply (ie, the second voltage conversion unit 112) shown in are also applicable to the scenario when the onboard power supply of the service board includes the third voltage conversion unit and the fourth voltage conversion unit, and will not be repeated here.

[0112] In summary, the embodiment of the present application provides a power supply system, in which the onboard power supply on the service board adopts a non-isolated voltage conversion unit, thereby improving the voltage conversion efficiency of the onboard power supply. Since the height of the circuit of the onboard power supply is relatively low, the onboard power supply and load module on the service board can adopt whole-board heat dissipation, thereby improving the heat dissipation efficiency of the service board.

[0113] Furthermore, since the on-board power supply and load module can adopt whole-board heat dissipation, the distance between the load module and the on-board power supply can be closer, thereby reducing the line loss between the load module and the on-board power supply, thereby further improving the power supply efficiency of the power supply to the load module.

[0114] The embodiment of the present application also provides an ICT device, in which the load module on the service board of the ICT device can adopt the above Figures 1 to 10 The power supply system shown is powered.

[0115] It can be understood that in the ICT device, the load modules on the service board in the ICT device can be fully powered by the power supply system provided in the embodiment of the present application, or can be partially powered by the power supply system provided in the embodiment of the present application, and the embodiment of the present application is not limited to this.

[0116] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A power supply system, characterized in that: include: A first voltage conversion unit; the first voltage conversion unit is an isolated voltage conversion unit; the first voltage conversion unit is connected to a power supply and is used to convert the voltage of the power supply into a first voltage; the first voltage is the power supply voltage of the service board; a second voltage conversion unit; the second voltage conversion unit is a non-isolated voltage conversion unit, used to convert the first voltage into a second voltage; the second voltage conversion unit is deployed on the service board; the second voltage is the power supply voltage of the first load module on the service board; The second voltage conversion unit and the first load module dissipate heat through a whole-plate heat sink, and the whole-plate heat sink covers the second voltage conversion unit and the first load module.

2. The power supply system according to claim 1, characterized in that: The second voltage conversion unit includes a field effect transistor and a capacitor.

3. The power supply system according to claim 1 or 2, characterized in that: The first voltage is greater than 12V.

4. The power supply system according to claim 1 or 2, characterized in that: The first load module includes an optical module.

5. The power supply system according to claim 1 or 2, characterized in that: The power supply system further comprises: A third voltage conversion unit; the third voltage conversion unit is a non-isolated voltage conversion unit, used to convert the first voltage into a third voltage; the third voltage conversion unit is deployed on the service board; A fourth voltage conversion unit; the fourth voltage conversion unit is a non-isolated voltage conversion unit, used to convert the third voltage into a fourth voltage; the fourth voltage conversion unit is deployed on the service board; the fourth voltage is the power supply voltage of the second load module on the service board.

6. The power supply system according to claim 5, characterized in that: The power of the second load module is less than or equal to a preset threshold.

7. The power supply system according to claim 5, characterized in that: The second load module includes a low-power load.

8. The power supply system according to claim 1 or 2, characterized in that: The first voltage has a value range of 24V to 60V.

9. The power supply system according to claim 1 or 2, characterized in that: The first voltage has a value of 48V or 53.5V.

10. An ICT device, characterized in that: The ICT device comprises a power supply system as described in any one of claims 1 to 9; wherein the power supply system is used to supply power to a service board in the ICT device.

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