WO2019024406A1 - 一种为服务器供电的电源装置和电源管理系统 - Google Patents

一种为服务器供电的电源装置和电源管理系统 Download PDF

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Publication number
WO2019024406A1
WO2019024406A1 PCT/CN2017/119202 CN2017119202W WO2019024406A1 WO 2019024406 A1 WO2019024406 A1 WO 2019024406A1 CN 2017119202 W CN2017119202 W CN 2017119202W WO 2019024406 A1 WO2019024406 A1 WO 2019024406A1
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resistor
pull
resistance
power supply
circuit
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PCT/CN2017/119202
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English (en)
French (fr)
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罗嗣恒
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郑州云海信息技术有限公司
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Priority to US16/097,228 priority Critical patent/US11249528B2/en
Publication of WO2019024406A1 publication Critical patent/WO2019024406A1/zh

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K21/00—Details of pulse counters or frequency dividers
    • H03K21/08—Output circuits
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G06F1/266—Arrangements to supply power to external peripherals either directly from the computer or under computer control, e.g. supply of power through the communication port, computer controlled power-strips

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  • the present application relates to the field of server power supply technologies, and in particular, to a power supply device and a power management system for powering a server.
  • the server power management system uses two or more power supply devices to form a power supply module to supply power to the server; in a data center that processes massive data, a single server power management system uses a 2+2 or 4+4 power supply device.
  • the redundant configuration mode uses the power distribution board to control the working state of each power supply device and monitor the operating parameters of the power supply device; wherein the power distribution board and the power control chip of each power supply device communicate by the same communication bus (PMBUS).
  • the power distribution board and the connectors in each of the power supply units are each provided with an address output, and the address output of the power supply unit is directly connected to the address pin of the power management chip of the power supply unit. Since each address output has only two states of high level and low level, in the case where two or more power supply units are connected to the power distribution board, multiple address outputs need to be set on the power distribution board and the connector of the power supply unit. . Taking 4+4 redundant power supply devices (that is, 8 power supply devices) as an example, three address power supply devices are required in the area, and three address output terminals are required in the power distribution table and the connectors of the respective power supply devices.
  • the present application provides a power supply device and a power management system for powering a server to solve the problem that a connector between the existing power supply device and the power distribution plate needs to set a plurality of address outputs, so that the connector is large in size.
  • An embodiment of the present application provides a power supply device for supplying power to a server, including a power control chip and a first connector for connecting the power control chip and the power distribution board;
  • the first connector has only one address input end
  • the resistance adjustment circuit includes a pull-up resistance circuit and a pull-down resistance circuit connected in series; the pull-up resistance circuit and/or the pull-down resistance circuit includes a plurality of resistance branches, and are disposed in each of the a switch in the resistor branch; one input end of the voltage comparator is connected to the address input end, and the other input end of the voltage comparator is connected to a connection point of the resistance adjustment circuit;
  • An input end of the counter is connected to an output end of the voltage comparator, and each output end of the counter is respectively connected to one of the switches and controls an open/close state of the corresponding switch;
  • the respective outputs of the counter are also respectively connected to respective address pins of the power control chip.
  • the counter is an octal counter including three outputs
  • the pull-up resistance circuit is composed of a first resistor
  • the pull-down resistance circuit includes a first branch and a second branch connected in parallel;
  • the first branch includes a second resistor;
  • the second branch includes a third resistor, and third and fourth branches connected in series with the third resistor but in parallel with each other;
  • the third branch includes a fourth resistor; the fourth branch includes a fifth resistor and a sixth resistor connected in series;
  • the switch includes a first switch, a second switch, and a third switch
  • the first switch is in series with the second resistor; the second switch is in series with the fourth resistor; and the third switch is in series with the fifth resistor.
  • the resistances of the first resistor, the second resistor, the third resistor, the fourth resistor, the fifth resistor, and the sixth resistor are the same.
  • the application also provides a power management system including a power distribution board and a power supply device as described above;
  • the power distribution board includes at least three second connectors that are paired with the first connector of the power supply device; pull-up resistors and pull-down resistors that are connected to the address inputs of each of the second connectors;
  • the ratio of the pull-up resistor value of the second connector to the pull-down resistor value is equal to the ratio of the pull-up resistor circuit resistance value of the power supply device and the pull-down resistor circuit resistance value of the power supply device;
  • the ratios of the resistances of the pull-up resistors and the pull-down resistors of the different second connectors are different.
  • the pull-up resistor has a resistance equal to a pull-up resistor circuit resistance of the power supply device connected thereto;
  • the pull-down resistor has a resistance equal to the pull-down resistor circuit resistance of the power supply unit to which it is paired.
  • the address input end of the voltage comparator receives a voltage signal of a specific voltage, and inputs the voltage signal to the first input end of the voltage comparator.
  • the voltage comparator compares the voltage signals of the first input end and the second input end, and inputs a high level signal to the input end of the counter when the voltage signals of the two are different, and the counter input terminal receives the high level signal to implement counting. Accumulate and output corresponding level signals at each output.
  • each of the counters The output level does not change any more, which makes the voltage of each address pin of the power control chip stable, so that the power control chip can determine its own address according to the voltage of each address pin.
  • FIG. 1 is a schematic diagram of a power supply device provided by an embodiment
  • FIG. 2 is a schematic diagram of a pull-down resistor circuit in an embodiment
  • FIG. 3 is a schematic diagram of a power management system provided by an embodiment
  • 11-power control chip 12-first connector, 13-voltage comparator, 14-counter, 15-resistance adjustment circuit, 151-first resistor, 152-second resistor, 153-third resistor, 154-fourth resistor, 155-fifth resistor, 156-sixth resistor, 157-first switch, 158-second switch, 159-third switch, 21-second connector, 22-pull-up resistor, 23 - Pull-down resistor.
  • FIG. 1 is a schematic diagram of a power supply device provided by an embodiment.
  • the power supply device in this embodiment includes a power control chip 11 and a first connector 12; each pin of the power control chip 11 is respectively connected to each input end of the first connector 12; wherein, the power control Some pins of the chip 11 are used as communication bus pins, one pin is used as a pin for detecting whether or not the power distribution board is connected, and several pins are used as address pins for judging the address assigned by the power distribution board.
  • the first connector 12 has only one address input end.
  • the power supply device provided in this embodiment further includes a voltage comparator 13, a counter 14, and a resistance adjusting circuit 15.
  • the resistance adjusting circuit 15 includes a pull-up resistance circuit and a pull-down resistance circuit connected in series, the pull-up resistor circuit is connected to the positive pole of the DC power supply, and the pull-down resistance circuit is grounded.
  • the pull-up resistance circuit includes only one first resistor 151 with a fixed resistance;
  • the pull-down resistor circuit includes a plurality of resistor branches and switches disposed in the respective resistor branches. By controlling the opening and closing of each switch, the resistance connection state of each resistance branch can be controlled, and then the resistance value of the pull-down resistor circuit can be changed, and the voltage at the connection of the pull-up resistance circuit and the pull-down resistance circuit can be changed.
  • the voltage comparator 13 includes two input terminals, the first input terminal is connected to the address input end of the first connector 12, and the second input terminal is connected to the pull-up resistance value adjusting circuit 15 and the pull-down resistance adjusting circuit 15 connection.
  • the input terminal of the counter 14 is connected to the voltage expectation output terminal, and each of the output terminals is respectively connected to each switch in the pull-down resistor circuit to control the opening and closing of each switch according to the state of its own output level.
  • each of the output terminals of the technology is also connected to each address pin of the power control chip 11.
  • the address input terminal of the voltage comparator 13 receives a voltage signal of a specific voltage, and inputs the voltage signal to the first input of the voltage comparator 13.
  • the voltage comparator 13 compares the voltage signals of the first input terminal and the second input terminal, and inputs a high level signal to the input end of the counter 14 when the voltage signals of the two are different, and the input of the counter 14 receives the high voltage. After the flat signal is implemented, the count is accumulated, and the corresponding level signals are respectively output at the respective output ends.
  • the voltage comparator 13 no longer wants the counter 14 to send the level signal, and the counter 14 does not change the level state of each output terminal; for each output terminal of the counter 14
  • the level state does not change, so that the switching state of each switch of the pull-down resistor circuit does not change, so that the resistance value of the pull-down resistor circuit does not change; because the resistance value of the pull-down resistor circuit does not change, the voltage of the second input terminal remains unchanged. The aforementioned state is made satisfactory.
  • the output terminals of the counter 14 are connected to the address pins of the power control chip 11, because the output levels of the respective counters 14 are unchanged, so that the address pins of the power control chip 11 are in a stable state for a long time, which makes The power control chip 11 determines its own address.
  • the power control chip 11 in the power supply device has three address pins, and the counter 14 is an eight-bit counter 14 and three switches are provided in the pull-down resistor circuit. In different open and close states, the equivalent resistance of the pull-down resistor circuit can be different.
  • the pull-down resistor circuit in this embodiment includes a first branch and a second branch connected in parallel; the first branch includes a second resistor 152 and a first switch 157; and the second branch includes a third resistor. 153, a third branch and a fourth branch connected in series with the third resistor 153 but in parallel with each other.
  • the third branch includes a fourth resistor 154 and a second switch 158, and the fourth branch includes a fifth resistor 155, a sixth resistor 156, and a third switch 159 connected in series.
  • the first switch 157, the second switch 158, and the third switch 159 are coupled to the three outputs of the counter 14, respectively, and are controlled by the three outputs of the counter 14.
  • the technology is the corresponding 2N counter 14, and the corresponding number of switches is also N, so that the resistance of the pull-down resistor circuit is There can be 2 N changes.
  • the purpose of setting a plurality of switches in the pull-down resistor circuit is to change the voltage of the connection between the pull-up resistor circuit and the pull-down resistor circuit; it is conceivable that in other embodiments, the switch may also be disposed in the pull-up resistor circuit.
  • the pull-down resistor circuit uses a fixed resistance resistor; or, in other embodiments, the pull-down resistor circuit and the pull-up resistor circuit have different resistance values, which in turn changes the voltage at the junction of the two.
  • the first resistor 151, the second resistor 152, the third resistor 153, the fourth resistor 154, the fifth resistor 155, and the sixth resistor 156 are preferably resistors R having the same resistance. Assuming that the voltage of the DC power source is U, according to the equivalent circuit principle, when the three switches are simultaneously turned on, the resistance of the pull-down resistor circuit is 0; when the third switch 159 is closed, when the first switch 157 and the second switch 158 are turned on, the pull-down is pulled down.
  • the resistance of the resistance circuit is 3R; the third switch 159 is open and the first switch 157 is open, and when the second switch 158 is closed, the resistance of the pull-down resistor circuit is 2R; the first switch 157 is closed, the second switch 158 and the third switch
  • the resistance of the pull-down resistor circuit is R; the second switch 158 and the third switch 159 are closed, and when the first switch 157 is turned on, the resistance of the pull-down resistor circuit is 5/3R, the first switch 157 and the third switch 159 is closed, when the second switch 158 is opened, the resistance of the pull-down resistor circuit is 3/4R; the first switch 157 and the second switch 158 are closed, and when the third switch 159 is opened, the resistance of the pull-down resistor circuit is 2/3R; When the first switch 157, the second switch 158, and the third switch 159 are both closed, the resistance of the pull-down resistor circuit is 5/8R.
  • an embodiment of the present invention further provides a power management system using the foregoing power supply device.
  • FIG. 3 is a schematic diagram of a power management system according to an embodiment of the present invention.
  • the power management system provided in this embodiment includes a power distribution board and a power supply unit connected to the power distribution board.
  • the power distribution board includes at least three second connectors 21 that are paired with the first connector 12 in the power supply unit.
  • the address input terminals of the respective first connectors 12 are connected to the pull-up resistor 22 and the pull-down resistor 23, the pull-up resistor 22 is connected to the positive pole of the DC power supply, and the pull-down resistor 23 is grounded.
  • the ratio of the resistances of the pull-up resistor 22 and the pull-down resistor 23 connected to the second connector 21 is equal to the ratio of the pull-up resistor circuit and the pull-down resistor circuit in the power supply device connected to the second connector 21, so that The corresponding power supply unit determines its own resistance state.
  • the ratios of the resistance values of the pull-up resistor 22 and the pull-down resistor 23 connected to the different second connectors 21 are different.
  • the pull-up resistor 22 has a resistance equal to the pull-up resistor circuit resistance of the power supply device to which the pair is connected;
  • the pull-down resistor 23 has a resistance equal to the pull-down resistor circuit resistance of the power supply device to which the pair is connected.
  • radio frequency test switch and the wireless communication device in the embodiment of the present invention are described in detail above.
  • the principles and embodiments of the present invention are described in the detailed description of the present invention.
  • the embodiments of the present invention are only used to help understand the core idea of the present invention. Without departing from the principles of the present invention, those skilled in the art All other embodiments obtained under the premise of creative labor are within the scope of the invention.

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Abstract

一种为服务器供电的电源装置和电源管理系统，电源装置包括电源控制芯片（11）、第一连接器（12）、电压比较器（13）、计数器（14）和阻值调整电路（15）；阻值调整电路（15）包括上拉阻值电路和下拉阻值调电路；下拉阻值电路包括多个电阻支路和开关；电压比较器（13）的一个输入端与地址输入端连接，另一个输入端与上拉阻值调整电路和下拉阻值调整电路的连接点连接；计数器（14）的输入端与电压比较器（13）的输出端连接，计数器（14）的各个输出端分别对与一个开关连接并控制对应开关的开闭状态；计数器（14）的各个输出端还分别与电源控制芯片（11）的各个地址引脚连接。采用该电源装置，只需要在第一连接器（12）设置一个地址连接端，就可以实现电源装置地址的确定，减小了第一连接器（12）中连接端的数量。

Description

一种为服务器供电的电源装置和电源管理系统
本申请要求于2017年08月03日提交中国专利局、申请号为201710657191.2、发明名称为“一种为服务器供电的电源装置和电源管理系统”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及服务器供电技术领域，尤其涉及一种为服务器供电的电源装置和电源管理系统。
背景技术
目前，服务器电源管理系统采用两个或者两个以上的电源装置组成供电模组为服务器供电；在处理海量数据的数据中心中，单个服务器电源管理系统多采用2+2或者4+4的电源装置冗余配置方式，利用电源分配板控制各个电源装置的工作状态、监控电源装置的工作参数；其中电源分配板和各个电源装置的电源控制芯片采用同一通信总线(PMBUS)通信。
为了为各个电源装置分配地址，电源分配板和每个电源装置中的连接器均需设置地址输出端，并且电源装置的地址输出端直接与电源装置的电源管理芯片的地址引脚连接。由于每个地址输出端均只有高电平和低电平两种状态，在电源分配板连接两个以上电源装置的情况下，电源分配板和电源装置的连接器上均需要设置多个地址输出端。以4+4冗余供电装置(也就是8个电源装置)为例，为区域8个电源装置，电源分配表与各个电源装置的连接器中均需要设置3个地址输出端。
而为电源装置和电源分配板中每个连接器均设置三个地址分配输出端，使得各个连接器的尺寸均较大；特别是电源分配板上设置多个前述连接器时尺寸会相应地增大，不利于综合减小电源分配板的整体尺寸。
发明内容
本申请提供了为服务器供电的电源装置和电源管理系统，以解决现有电源装置和电源分配板之间的连接器需要设置多个地址输出端、使得连接器尺寸较大的问题。
本申请实施例提供一种为服务器供电的电源装置，包括电源控制芯片和实现电源控制芯片与电源分配板连接的第一连接器；
所述第一连接器只有一个地址输入端；
还包括电压比较器、计数器和阻值调整电路；
所述阻值调整电路包括串联连接的上拉阻值电路和下拉阻值电路；所述上拉阻值电路和/或所述下拉阻值电路包括多个电阻支路，和设置在各个所述电阻支路中的开关；所述电压比较器的一个输入端与所述地址输入端连接，所述电压比较器的另一个输入端与所述阻值调整电路的连接点连接；
所述计数器的输入端与所述电压比较器的输出端连接，所述计数器的各个输出端分别与一个所述开关连接并控制对应开关的开闭状态；
所述计数器的各个输出端还分别与所述电源控制芯片的各个地址引脚连接。
可选的，所述计数器为包括三个输出端的八进制计数器；
所述上拉阻值电路由一个第一电阻组成；
所述下拉阻值电路包括并联的第一支路和第二支路；
所述第一支路包括第二电阻；所述第二支路包括第三电阻，和与第三电阻串联但相互并联的第三支路和第四支路；
所述第三支路包括第四电阻；所述第四支路包括串联连接的第五电阻和第六电阻；
所述开关包括第一开关、第二开关和第三开关；
所述第一开关与所述第二电阻串联；所述第二开关与所述第四电阻串联；所述第三开关与所述第五电阻串联。
可选的，所述第一电阻、所述第二电阻、所述第三电阻、所述第四电阻、所述第五电阻和所述第六电阻的阻值相同。本申请还提供一种电源管理系统，包括电源分配板和前所述的电源装置；
所述电源分配板包括至少三个可与电源装置的第一连接器配对连接的第二连接器；各个所述第二连接器的地址输入端均连接的上拉电阻和下拉电阻；
所述第二连接器的上拉电阻阻值与下拉电阻阻值之比等于与之配对连接的所述电源装置的上拉电阻电路阻值和下拉电阻电路阻值之比；
不同所述第二连接器的上拉电阻和下拉电阻的阻值之比不同。
可选的，所述上拉电阻阻值等于与之配对连接的电源装置的上拉电阻电路阻值；
所述下拉电阻阻值等于与之配对连接的电源装置的下拉电阻电路阻值。
采用本实施例提供的电源装置，当电源装置与电源分配板连接后，电压比较器的地址输入端接收到一特定电压的电压信号，并将电压信号输入到电压比较器的第一输入端，电压比较器比较第一输入端和第二输入端的电压信号，并在二者电压信号不同的情况下输入一个高电平信号至计数器的输入端，计数器输入端接收到高电平信号后实现计数累加，并分别在各个输出端输出相应的电平信号。如果计数器的各个输出端分别控制各个开关实现相应的转换，改变下拉电阻电路的阻值，继而改变第二输入端的电压；如此往复，直至电压比较器的两个输入端电压相同，则计数器的各个输出端电平不再发生变化，也就使得电源控制芯片各个地址管脚的电压稳定，使得电源控制芯片根据各个地址管脚的电压就可确定自身地址。
附图说明
为了更清楚地说明本申请的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，显而易见地，对于本领域普通技术人员而言，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1是实施例提供的电源装置示意图；
图2是实施例中的下拉电阻电路示意图；
图3是实施例提供的电源管理系统示意图；
其中：11-电源控制芯片，12-第一连接器，13-电压比较器，14-计数器，15-阻值调整电路，151-第一电阻，152-第二电阻，153-第三电阻，154-第四电阻，155-第五电阻，156-第六电阻，157-第一开关，158-第二开关，159-第三开关，21-第二连接器，22-上拉电阻，23-下拉电阻。
具体实施方式
为了使本技术领域的人员更好地理解本发明中的技术方案，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部 的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都应当属于本发明保护的范围。
本发明实施例提供一种为服务器供电的电源装置。图1是实施例提供的电源装置示意图。如图1所示，本实施例中的电源装置包括电源控制芯片11和第一连接器12；电源控制芯片11的各个引脚分别与第一连接器12的各个输入端连接；其中，电源控制芯片11的某些引脚是作为通信总线引脚，某一个引脚作为检测是否连接电源分配板的引脚，几个引脚作为判断电源分配板分配地址的地址引脚。
与现有不同的是，本实施例中，第一连接器12只有一个地址输入端。除了前述结构外，本实施例提供的电源装置还包括电压比较器13、计数器14和阻值调整电路15。
阻值调整电路15包括串联连接的上拉阻值电路和下拉阻值电路，上拉电阻电路连接直流电源的正极，下拉阻值电路接地。本实施例中：上拉阻值电路仅包括一个阻值固定的第一电阻151；下拉阻值电路包括多个电阻支路和设置在各个电阻支路中的开关。通过控制各个开关的开闭可以控制各个电阻支路的电阻连通状态，继而改变下拉电阻电路的阻值，也就可以改变上拉阻值电路和下拉阻值电路连接处的电压。
电压比较器13包括两个输入端，第一输入端与第一连接器12的地址输入端连接，第二输入端与上拉阻值调整电路15和下拉阻值调整电路15之间的连接电连接。
计数器14的输入端与电压比较期待输出端连接，各个输出端分别与前述下拉电阻电路中的各个开关连接，以根据自身输出电平的状态控制各个开关的开闭。另外，技术其的各个输出端还分别与电源控制芯片11的各个地址引脚连接。
采用本实施例提供的电源装置，当电源装置与电源分配板连接后，电压比较器13的地址输入端接收到一特定电压的电压信号，并将电压信号输入到电压比较器13的第一输入端，电压比较器13比较第一输入端和第二输入端的电压信号，并在二者电压信号不同的情况下输入一个高电平信号至计数器14的输入端，计数器14输入端接收到高电平信号后实现计数累 加，并分别在各个输出端输出相应的电平信号。如果计数器14的各个输出端分别控制各个开关实现相应的转换，改变下拉电阻电路的阻值，继而改变第二输入端的电压。如果第二输入端的电压与第一输入端的电压不同，则仍持续前述步骤，直至第二输入端的电压与第一输入端的电压。
而当第二输入端的电压与第一输入端的电压相同时，电压比较器13不再想计数器14发送电平信号，计数器14也就不改变各个输出端的电平状态；因为计数器14的各个输出端的电平状态不改变，也就使得下拉电阻电路各个开关的开关状态不改变，使得下拉电阻电路的阻值不变；因为下拉电阻电路的阻值不变，所以第二输入端的电压维持不变，使得前述状态得意维持。而计数器14的各个输出端与电源控制芯片11的地址引脚连接，因为各个计数器14的输出端电平不变，所以使得电源控制芯片11地址引脚长期处在某一稳定状态，也就使得电源控制芯片11确定自身的地址。
在一具体实施中，电源装置中的电源控制芯片11具有三个地址引脚，与之相对应的，前述的计数器14为八位计数器14，下拉电阻电路中具有三个开关，三个开关处在不同的开闭状态可以使得下拉电阻电路的等效阻值各不相同。
图2是实施例中的下拉电阻电路示意图。如图2所示，本实施例中的下拉电阻电路包括并联的第一支路和第二支路；第一支路包括第二电阻152和第一开关157；第二支路包括第三电阻153，和第三电阻153串联连接但相互并联的第三支路和第四支路。第三支路包括第四电阻154和第二开关158，第四支路包括串联连接的第五电阻155、第六电阻156和第三开关159。第一开关157、第二开关158和第三开关159分别与计数器14的三个输出端连接，被计数器14的三个输出端控制。
在其他实施例中，如果电源装置中电源控制芯片11的地址引脚为其他数量N，则技术其为相应的2 N计数器14，相应的开关数量也为N，以使下拉电阻电路的阻值可以出现2 N种变化。
本实施例中，下拉电阻电路中设置多个开关的目的是改变上拉电阻电路和下拉电阻电路连接处的电压大小；可想到，在其他实施例中，也可以将开关设置在上拉电阻电路中，而下拉电阻电路采用固定阻值的电阻；或 者，在其他实施例中，下拉电阻电路和上拉电阻电路的电阻值都改变，继而改变二者连接处的电压大小。
本实施例中，前述的第一电阻151、第二电阻152、第三电阻153、第四电阻154、第五电阻155、第六电阻156优选采用阻值相同的电阻R。假设直流电源的电压为U，根据等效电路原理，在三个开关同时打开时，下拉电阻电路的阻值为0；第三开关159闭合，第一开关157和第二开关158打开时，下拉电阻电路的阻值为3R；第三开关159打开和第一开关157打开，第二开关158闭合时，下拉电阻电路的阻值为2R；第一开关157闭合，第二开关158和第三开关159打开时，下拉电阻电路的阻值为R；第二开关158和第三开关159闭合，第一开关157打开时，下拉电阻电路的阻值是5/3R,第一开关157和第三开关159闭合，第二开关158打开时，下拉电阻电路的阻值是3/4R；第一开关157和第二开关158闭合，第三开关159打开时，下拉电阻电路的阻值为2/3R；第一开关157、第二开关158和第三开关159均闭合时，下拉电阻电路的阻值是5/8R。
除了提供前述的电源装置外，本发明实施例还提供一种采用前述电源装置的电源管理系统。
图3是本发明实施例提供的电源管理系统示意图。如图3所示，本实施例提供的电源管理系统包括电源分配板和与电源分配板连接的电源装置。
电源分配板包括至少三个与电源装置中的第一连接器12配对的第二连接器21。各个第一连接器12的地址输入端均连接上拉电阻22和下拉电阻23，上拉电阻22连接直流电源的正极，下拉电阻23接地。
本实施例中，与第二连接器21连接上拉电阻22和下拉电阻23的阻值之比等于与第二连接器21连接的电源装置中的上拉电阻电路和下拉电阻电路之比，使得对应的电源装置确定自身的电阻状态。为了避免使得各个电源装置的阻值均不相同，不同第二连接器21连接的上拉电阻22和下拉电阻23的阻值之比不同。
优选的，本实施例中，上拉电阻22阻值等于与之配对连接的电源装置的上拉电阻电路阻值；下拉电阻23阻值等于与之配对连接的电源装置的下 拉电阻电路阻值。
以上对本发明实施例中的一种射频测试开关和无线通信设备进行了详细介绍。本部分采用具体实施例对本发明的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本发明的核心思想，在不脱离本发明原理的情况下，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。

Claims (5)

  1. 一种为服务器供电的电源装置，包括电源控制芯片(11)和实现电源控制芯片(11)与电源分配板连接的第一连接器(12)；其特征在于：
    所述第一连接器(12)只有一个地址输入端；
    还包括电压比较器(13)、计数器(14)和阻值调整电路(15)；
    所述阻值调整电路(15)包括串联连接的上拉阻值电路和下拉阻值电路；所述上拉阻值电路和/或所述下拉阻值电路包括多个电阻支路，和设置在各个所述电阻支路中的开关；所述电压比较器(13)的一个输入端与所述地址输入端连接，所述电压比较器(13)的另一个输入端与所述阻值调整电路(15)的连接点连接；
    所述计数器(14)的输入端与所述电压比较器(13)的输出端连接，所述计数器(14)的各个输出端分别与一个所述开关连接并控制对应开关的开闭状态；
    所述计数器(14)的各个输出端还分别与所述电源控制芯片(11)的各个地址引脚连接。
  2. 根据权利要求1所述的电源装置，其特征在于：
    所述计数器(14)为包括三个输出端的八进制计数器(14)；
    所述上拉阻值电路包括一个第一电阻(151)；
    所述下拉阻值电路包括并联的第一支路和第二支路；
    所述第一支路包括第二电阻(152)；所述第二支路包括第三电阻(153)，和与第三电阻(153)串联但相互并联的第三支路和第四支路；
    所述第三支路包括第四电阻(154)；所述第四支路包括串联连接的第五电阻(155)和第六电阻(156)；
    所述开关包括第一开关(157)、第二开关(158)和第三开关(159)；
    所述第一开关(157)与所述第二电阻(152)串联；所述第二开关(158)与所述第四电阻(154)串联；所述第三开关(159)与所述第五电阻(155)串联。
  3. 根据权利要求2所述的电源装置，其特征在于：
    所述第一电阻(151)、所述第二电阻(152)、所述第三电阻(153)、 所述第四电阻(154)、所述第五电阻(155)和所述第六电阻(156)的阻值相同。
  4. 一种电源管理系统，其特征在于：包括电源分配板和如权利要求1-3任一项所述的电源装置；
    所述电源分配板包括至少三个可与电源装置的第一连接器(12)配对连接的第二连接器(21)；各个所述第二连接器(21)的地址输入端均连接的上拉电阻(22)和下拉电阻(23)；
    所述第二连接器(21)的上拉电阻(22)阻值与下拉电阻(23)的阻值之比等于与之配对连接的所述电源装置的上拉电阻电路阻值和下拉电阻电路阻值之比；
    不同所述第二连接器(21)的上拉电阻(22)和下拉电阻(23)的阻值之比不同。
  5. 根据权利要求4所述的电压管理系统，其特征在于：
    所述上拉电阻(22)阻值等于与之配对连接的电源装置的上拉电阻电路阻值；
    所述下拉电阻(23)阻值等于与之配对连接的电源装置的下拉电阻电路阻值。
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