CN101957648B - power supply device of server - Google Patents
power supply device of server Download PDFInfo
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- CN101957648B CN101957648B CN2009101594805A CN200910159480A CN101957648B CN 101957648 B CN101957648 B CN 101957648B CN 2009101594805 A CN2009101594805 A CN 2009101594805A CN 200910159480 A CN200910159480 A CN 200910159480A CN 101957648 B CN101957648 B CN 101957648B
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- power supply
- source
- drain electrode
- control circuit
- servomechanism
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Abstract
The invention provides a power supply device of a server, which comprises a power supply unit, a control circuit, a delay circuit and a changeover switch, wherein the power supply unit supplies an auxiliary power supply when the server is in a shutdown state and simultaneously supplies a main power supply and the auxiliary power supply when the server is in a startup state, and the power supply unit also outputs a control signal to change over states according to the supplying or closing moment of the main power supply; the control circuit outputs an earthed voltage or produces a high impedance state according to the control signal; the delay circuit decides to delay the main power supply for one delay time or directly outputs the earthed voltage to produce a changeover signal to control the changeover switch; and the changeover switch receives the changeover signal and selects to changeover the main power supply or the auxiliary power supply to supply power for the server according to the changeover signal.
Description
Technical field
The present invention relates to a kind of power supply device, and be particularly related to a kind of power supply device of servomechanism.
Background technology
In computer system now, for resource management that most host computers effectively are provided and provide more service, often use so-called servomechanism to carry out to each host computer.Servomechanism has higher computing power and high capacity space usually, uses so that a plurality of host computers to be provided.
The power supply device of servomechanism generally provides two kinds of power supplys, is respectively primary power and accessory power supply.Wherein, when the plug of servomechanism was plugged, the power supply device of servomechanism can provide accessory power supply to use to the element that servomechanism needs to power under off-mode.And after servomechanism was started shooting, the power supply device of servomechanism then can provide primary power and accessory power supply to come to be the servomechanism power supply simultaneously.But, after start, the element of being powered by accessory power supply originally can be changed by primary power usually and power because the power of accessory power supply is limited.。
Please refer to Fig. 1, Fig. 1 is the power supply device 100 of existing servomechanism.Power supply device 100 comprises change-over switch 110, electric capacity of voltage regulation C1, C2 and C3, pull-up resistor R1 and diode D3.Change-over switch 110 is wherein selected primary power V by the conducting or the blocked operation of closing
PRIOr accessory power supply V
STBYOne of them, be used as system power supply V
DUALUse to servomechanism.When change-over switch 110 conductings, diode D3 is in cut-off state, accessory power supply V
STBYBecome system power supply V by change-over switch 110 transmission
DUALRelative, when change-over switch 110 is closed, then conducting of diode D3, and transmit primary power V
PRIBecome system power supply V
DUAL
Yet, in the application of reality, in the process that servomechanism is started shooting or shut down, primary power V
PRIIn the operation of whether powering, be not just can arrive stable potential in a flash, but rise slowly or descend.Therefore, as primary power V
PRIWhen not rising to stable current potential as yet, under the situation that change-over switch 110 is just closed, can make system power supply V
DUALCan fall down current potential to a certain degree earlier, again along with primary power V
PRISlowly rise to required current potential.Opposite, when change-over switch 110 conductings, also can be because of input signal IN because of along with primary power V
PRISlowly descend and postponed time of change-over switch 110 conductings, and make system power supply V
DUALAlong with primary power V
PRISlowly drop to just to switch to after change-over switch 110 conductings and equal accessory power supply V
STBYThat is to say no matter existing power supply device 100 is in the servomechanism start or shuts down moment system power supply V
DUALThe situation that voltage subsides takes place in the capital.
Summary of the invention
The invention provides a kind of power supply device of servomechanism, effectively avoid the system power supply that it provided to produce the phenomenon of subsiding.
The invention provides a kind of power supply device of servomechanism.Comprise power supply unit, control circuit, delay circuit and change-over switch in the power supply device.Power supply unit provides accessory power supply under servomechanism is in off-mode, and primary power and this accessory power supply are provided under the servomechanism open state simultaneously.Power supply unit is also exported control signal, in provide or stop to provide primary power moment changeover control signal state.Control circuit has input end and output terminal, and the input end of control circuit receives the state of control signal, and its output terminal is according to control signal output ground voltage or generation high impedance status.Delay circuit connects the output terminal of control circuit and receives primary power.Delay circuit decides a delay time delay of primary power or directly transmits ground voltage to produce the switching signal of control its switch according to the output state of the output terminal of control circuit.Change-over switch then receives switching signal, selects switch mains power or accessory power supply that servomechanism is powered according to switching signal.
In one embodiment of this invention, when the output terminal of control circuit switched to the output ground voltage by output high impedance state, delay circuit produces switching signal made change-over switch select accessory power supply so that system power supply to be provided by selecting primary power to switch to.
In one embodiment of this invention, when the output terminal of control circuit switched to output high impedance state by the output ground voltage, delay circuit produces switching signal made change-over switch select primary power so that system power supply to be provided by selecting accessory power supply to switch to after a time delay.
In one embodiment of this invention, above-mentioned control circuit comprises the first transistor.The first transistor has grid, first source/drain electrode and second source/drain electrode, and its grid connects the input end of control circuit to receive control signal, and its first source/drain electrode connects the output terminal of control circuit, and its second source/drain electrode receives ground voltage.
In one embodiment of this invention, above-mentioned control circuit also comprises first diode, and its anode connects second source/drain electrode of the first transistor, and its negative electrode connects first source/drain electrode of the first transistor.
In one embodiment of this invention, above-mentioned delay circuit comprises delay resistance and postpones electric capacity.Postpone resistance and be serially connected between the output terminal of primary power and control circuit, postpone electric capacity and be serially connected between delay resistance and ground voltage.
In one embodiment of this invention, above-mentioned control circuit also comprises transistor seconds and pull-up resistor.Transistor seconds has grid, first source/drain electrode and second source/drain electrode, and its grid receives control signal, and its first source/drain electrode produces control signal, and its second source/drain electrode receives ground voltage.Pull-up resistor is serially connected between the first source/drain electrode and reference power source of transistor seconds.
In one embodiment of this invention, above-mentioned control circuit also comprises second diode, and its anode connects second source/drain electrode of transistor seconds, and its negative electrode connects first source/drain electrode of transistor seconds.
In one embodiment of this invention, when servomechanism is started shooting, the control signal of power supply unit output logic noble potential.When servomechanism shuts down, the control signal of power supply unit output logic electronegative potential.
In one embodiment of this invention, when control signal was logic high potential, delay circuit delays primary power time delay was to produce switching signal.When control signal was electronegative potential, delay circuit directly transmitted ground voltage to produce switching signal.
Based on above-mentioned, the present invention cooperates delay circuit by control circuit, when servomechanism is started shooting, by the time delay that delay circuit provided, when determining that primary power has risen to steady state (SS), just selects primary power that system power supply is provided by change-over switch.And in the moment of servomechanism shutdown, switching accessory power supply at once provides system power supply.Thus, just can avoid the moment of system power supply, produce the phenomenon of subsiding because system power supply switches between primary power and accessory power supply in the servomechanism switching on and shutting down.
For above-mentioned feature and advantage of the present invention can be become apparent, below especially exemplified by embodiment, and conjunction with figs. is described in detail below.
Description of drawings
Fig. 1 is the power supply device 100 of existing servomechanism.
Fig. 2 is the power supply device 200 of the servomechanism of one embodiment of the invention.
Fig. 3 is the power supply device 300 of the servomechanism of another embodiment of the present invention.
The main element symbol description:
Power supply device-100,200,300; Change-over switch-110,210,310;
Control circuit-220,320; Delay circuit-230,330;
Power supply unit-240,340; The first transistor-T1;
Transistor seconds-T2; Switching signal-SW;
Signal-CTRL; Input end-A;
Output terminal-B; Diode-D3
First diode-D1; Second diode-D2;
Electric capacity-C1～C3; Primary power-V
PRI
Accessory power supply-V
STBYSystem power supply-V
DUAL
Ground voltage-GND; Reference power source-V1;
Postpone electric capacity-CD1; Resistance-R1, R2;
Postpone resistance-RD1; Series resistor-RI;
Control signal-PGD_PS.
Embodiment
Below please refer to Fig. 2, Fig. 2 is the power supply device 200 of the servomechanism of one embodiment of the invention.Power supply device 200 comprises change-over switch 210, control circuit 220, delay circuit 230 and power supply unit 240.Power supply unit 240 provides accessory power supply V under servomechanism is in off-mode
STBY, and primary power V is provided under the servomechanism open state simultaneously
PRIWith accessory power supply V
STBYIn addition, power supply unit 240 is also exported control signal PGD_PS, in providing or stopping to provide primary power V
PRIThe state of moment changeover control signal PGD_PS.Control circuit 220 has input end A and output terminal B.The input end A of control circuit 220 receives control signal PGD_PS, and its output terminal B then exports ground voltage GND or high impedance (high impendence) state.
The output terminal B of 230 connection control circuits 220 of delay circuit.230 of delay circuits are the primary power V that is received according to the output state of the output terminal B of control circuit 220 and delay circuit 230
PRI, produce the switching signal SW of control its switch 210.Wherein, switching signal SW has two kinds possibility, and a kind of is according to primary power V
PRIAs switching signal SW, another kind then is directly to transmit ground voltage GND to be used as switching signal SW after postponing a time delay.Wherein, when the output state of the output terminal B of control circuit 220 was ground voltage GND, delay circuit 230 is directly exported ground voltage GND as switching signal SW, and was opposite, if during control circuit 220 output high impedance states, 230 delay primary powers of delay circuit V
PRIPostpone a time delay and produce switching signal SW.
If cooperate the operation of change-over switch 210 to be illustrated, wherein when the output terminal B of control circuit 220 switched to ground voltage GND by output high impedance state, delay circuit 230 produces switching signal SW made change-over switch 210 by selecting primary power V
PRISwitch to and select accessory power supply V
STBYSo that system power supply V to be provided
DUALOpposite, when the output terminal B of control circuit 220 switches to output high impedance state by output ground voltage GND, delay circuit 230 produce switching signal SW make change-over switch 210 after time delay by selecting accessory power supply V
STBYSwitch to and select primary power V
PRISo that system power supply V to be provided
DUAL
210 of change-over switches receive switching signal SW, and select switch mains power V according to switching signal SW
PRIOr accessory power supply V
STBYServomechanism is powered.
It should be noted that when servomechanism and do not start shooting when also plugging in, control circuit 220 according to control signal PGD_PS at its output terminal B output ground voltage GND, and this moment the delay circuit 230 corresponding switching signal SW that equal ground voltage GND that produce.Change-over switch 210 is receiving switching signal SW conducting, and transmits accessory power supply V by change-over switch 210
STBYSo that system power supply V to be provided
DUALSince this moment change-over switch 210 conducting operation can't with the primary power V that may descend
PRIRelevant, so accessory power supply V
STBYCan provide fast becomes system power supply V
DUAL, do not have the feelings of subsiding and take place.
In addition, when servomechanism just by when start, control circuit 220 according to control signal PGD_PS at its output terminal B output high impedance state, and this moment the delay circuit 230 corresponding primary power V that postpone
PRIProduce switching signal SW after the time delay.And at this moment, though primary power V
PRIJust slowly rise and the stable current potential of no show, but because switching signal SW is primary power V
PRIInhibit signal, so change-over switch 210 can't be closed at once.That is to say, in this time delay, accessory power supply V
STBYCan continue provides as system power supply V
DUALAs primary power V
PRIAfter rising to stable potential, after just finishing time delay, change-over switch 210 just can be closed, the primary power V of stable potential
PRIProvide as system power supply V
DUALTherefore, the current potential situation of subsiding can't occur.
With the next embodiment that proposes a side circuit at the present invention, implementation detail of the present invention is described further.
Please refer to Fig. 3, Fig. 3 is the power supply device 300 of the servomechanism of another embodiment of the present invention.Power supply device 300 comprises control circuit 320 and delay circuit 330.
Control circuit 320 comprises transistor seconds T2 and pull-up resistor R2.Transistor seconds T2 has grid, first source/drain electrode and second source/drain electrode, and its grid receives control signal PGD_PS, and its first source/drain electrode produces signal CTRL, and its second source/drain electrode receives ground voltage GND.Pull-up resistor R2 then is serially connected between the first source/drain electrode and reference power source V1 of transistor seconds T2.In the present embodiment, when control signal PGD_PS is logic high potential " H ", transistor seconds T2 conducting and make signal CTRL output ground voltage GND, just logic low potential " L ".Opposite, when control signal PGD_PS was logic low potential " L ", transistor seconds T2 closed and makes signal CTRL export reference power source V1, just logic high potential " H ".In addition, the serial connection second diode D2 between first of transistor seconds T2 source/drain electrode and second source/drain electrode.
In addition, the grid of transistor seconds T2 receives on the path of control signal PGD_PS can series resistor RI, in order to the function of the grid of adjusting impedance matching and protection transistor seconds T2.
Be not difficult to find by above-mentioned explanation, the operation of the circuit of the transistor seconds T2 of present embodiment and the construction of pull-up resistor R2 institute is identical with anti-lock (inverter gate) in the logical circuit, in other words, the circuit of this part also can replace by the anti-lock (not illustrating) in the logical circuit.
Control circuit 320 also comprises by the first transistor T1 and comes construction.The first transistor T1 connects into the mode of (leakage) utmost point (the open source/drain) that increase income.In the present embodiment, when signal CTRL output logic noble potential " H ", the first transistor T1 conducting and make the output terminal output ground voltage GND of control circuit 320.Opposite, when signal CTRL output logic electronegative potential " L ", the first transistor T1 closes and makes the output terminal output high impedance state of control circuit 320.In addition, the serial connection first diode D1 between first of the first transistor T1 source/drain electrode and second source/drain electrode.
330 of delay circuits comprise and postpone resistance RD1 and postpone electric capacity CD1.Postpone resistance RD1, be serially connected in primary power V
PRIAnd between the output terminal of control circuit 320, postpone electric capacity CD1 and then be serially connected between delay resistance RD1 and ground voltage GND.When the output terminal of control circuit 320 was exported ground voltage GND, the switching signal SW that delay circuit 330 is produced can equal the output of the output terminal of control circuit 320, just ground voltage GND.On the other hand, when the output terminal of control circuit 320 was transformed into output high impedance state by output ground voltage GND, the switching signal SW that delay circuit 330 is produced then can be because of primary power V
PRIAgain discharge and recharge by postponing electric capacity CD1 and postponing resistance RD1, and produce primary power V
PRIThe switching signal SW that postpones a time delay.In other words, when control signal PGD_PS was logic high potential " H ", delay circuit 330 postponed primary power V
PRIA time delay is with generation switching signal SW, and when control signal PGD_PS was logic low potential " L ", delay circuit 330 directly transmitted ground voltage GND to produce switching signal SW.
At this, can change switching time by changing the capacitance and the resistance value that postpone electric capacity CD1 and postpone resistance RD1, and this technology of utilizing capacitance and resistance value to come the manufacturing delay time method can both know for those skilled in the art seldom describes in detail herein.
Need to prove that the control signal PGD_PS in the present embodiment can be a signal of being exported by the power supply unit in the servomechanism (not illustrating).The signal of control signal PGD_PS when servomechanism is started shooting is logic high potential " H ", and the signal of control signal PGD_PS when servomechanism is not started shooting is logic low potential " L ".
In sum, the present invention utilizes delay circuit to cooperate control circuit, when the servomechanism start and close, adjust at convincing by patient analysis of change-over switch time point logical and that close, therefore the situation of subsiding that makes primary power reach the system voltage that stable potential produces because of the long rise or fall time of needs is disappeared, with the degree of stability of the system power supply that promotes servomechanism.And delay circuit that the present invention proposes and control circuit connect and only need to utilize simple circuit (serial connection of electric capacity, resistance and single transistor) just can finish, and effectively save the cost of circuit.
It should be noted that at last: above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (9)
1. the power supply device of a servomechanism comprises:
One power supply unit, being in this servomechanism provides an accessory power supply under the off-mode, one primary power and this accessory power supply are provided under this servomechanism open state simultaneously, this power supply unit is also exported a control signal, in providing or stopping to provide moment of this primary power to change the state of this control signal;
One control circuit has input end and output terminal, and its input end receives this control signal, and its output terminal is exported a ground voltage or produced a high impedance status according to the state of this control signal;
One delay circuit connects the output terminal of this control circuit and receives this primary power, and this delay circuit decides this one time delay of primary power of delay or directly transmits this ground voltage to produce a switching signal according to the output state of the output terminal of this control circuit; And
One switches switch, receives this switching signal, selects this primary power of switching or this accessory power supply to this servomechanism power supply according to this switching signal.
2. power supply device according to claim 1, wherein when the output terminal of this control circuit switched to this ground voltage by this high impedance status of output, this delay circuit produces this switching signal made this change-over switch select this accessory power supply so that this system power supply to be provided by selecting this primary power to switch to.
3. power supply device according to claim 1, wherein when the output terminal of this control circuit switched to this high impedance status of output by this ground voltage of output, this delay circuit produces this switching signal made this change-over switch select this primary power so that this system power supply to be provided by selecting this accessory power supply to switch to after this time delay.
4. power supply device according to claim 1, wherein this control circuit comprises:
One the first transistor has grid, first source/drain electrode and second source/drain electrode, and its grid receives a signal, and its first source/drain electrode connects the output terminal of this control circuit, and its second source/drain electrode receives this ground voltage;
One transistor seconds has grid, first source/drain electrode and second source/drain electrode, and its grid connects the input end of this control circuit to receive this control signal, and its first source/drain electrode produces this signal, and its second source/drain electrode receives this ground voltage; And
One pull-up resistor is serially connected between the first source/drain electrode and a reference power source of this transistor seconds.
5. power supply device according to claim 4, wherein this control circuit also comprises:
One first diode, its anode connect second source/drain electrode of this first transistor, and its negative electrode connects first source/drain electrode of this first transistor.
6. power supply device according to claim 4, wherein this control circuit also comprises:
One second diode, its anode connect second source/drain electrode of this transistor seconds, and its negative electrode connects first source/drain electrode of this transistor seconds.
7. power supply device according to claim 1, wherein this delay circuit comprises:
One postpones resistance, is serially connected between the output terminal of this primary power and this control circuit; And
One postpones electric capacity, is serially connected between this delay resistance and this ground voltage.
8. power supply device according to claim 1, wherein when the start of this servomechanism, this control signal of this power supply unit output logic noble potential, when this servomechanism shutdown, this control signal of this power supply unit output logic electronegative potential.
9. power supply device according to claim 8, wherein when this control signal is logic high potential, this primary power of this delay circuit delays should time delay to produce this switching signal, when this control signal was logic low potential, this delay circuit directly transmitted this ground voltage to produce this switching signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101594805A CN101957648B (en) | 2009-07-14 | 2009-07-14 | power supply device of server |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101594805A CN101957648B (en) | 2009-07-14 | 2009-07-14 | power supply device of server |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101957648A CN101957648A (en) | 2011-01-26 |
| CN101957648B true CN101957648B (en) | 2011-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101594805A Expired - Fee Related CN101957648B (en) | 2009-07-14 | 2009-07-14 | power supply device of server |
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| Country | Link |
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| CN (1) | CN101957648B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102736688B (en) * | 2011-04-13 | 2014-12-10 | 英业达股份有限公司 | Server stander system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1282131A (en) * | 1999-07-27 | 2001-01-31 | 神基科技股份有限公司 | On-line immediate power switching device |
| CN1299084A (en) * | 1999-12-09 | 2001-06-13 | 金宝电子工业股份有限公司 | Instantaneous voltage regulation circuit for stand-by purpose |
-
2009
- 2009-07-14 CN CN2009101594805A patent/CN101957648B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1282131A (en) * | 1999-07-27 | 2001-01-31 | 神基科技股份有限公司 | On-line immediate power switching device |
| CN1299084A (en) * | 1999-12-09 | 2001-06-13 | 金宝电子工业股份有限公司 | Instantaneous voltage regulation circuit for stand-by purpose |
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| Publication number | Publication date |
|---|---|
| CN101957648A (en) | 2011-01-26 |
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Inventor after: Yu Chunyan Inventor before: Ji Haiyi Inventor before: Lin Zucheng |
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Effective date of registration: 20170914 Address after: Double the Dongfeng Dongfeng County of Liaoyuan city in Jilin Province town of two groups Patentee after: Yu Chunyan Address before: Taipei City, Taiwan Chinese Shilin District Hougang Street No. 66 Patentee before: Inventec Corporation |
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Address after: 541002 No. two, No. 5, West Road, Xiangshan District, Guilin, the Guangxi Zhuang Autonomous Region Patentee after: Yu Chunyan Address before: The double 136300 Dongfeng Dongfeng County Liaoyuan city in Jilin Province town of two groups Patentee before: Yu Chunyan |
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