CN102955550B - A kind of rack-mounted server system - Google Patents
A kind of rack-mounted server system Download PDFInfo
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Abstract
The present invention proposes a kind of rack-mounted server system, comprise a power supply unit and multiple server, this server system also comprises a soft starting circuit, be coupled between power supply unit and multiple server, this soft starting circuit has: an input end, is coupled to one first DC voltage from power supply unit; One constant-current source circuit, is coupled to input end, provides a steady current; One biasing circuit, is coupled to constant-current source circuit, provides one slowly to rise and has the bias voltage of a preset upper limit value; One first on-off element, there is one first electrode, one second electrode and one first control electrode, first electrode is coupled to input end, first control electrode is coupled to biasing circuit, the first on-off element is driven, to make the first on-off element from cut-off state to saturation conduction status transition by bias voltage; And an output terminal, be coupled to the second electrode of the first on-off element, export one second DC voltage when the first on-off element saturation conduction.
Description
Technical field
The invention relates to a kind of server system, especially about a kind of rack-mounted server system with soft starting circuit.
Background technology
Existing rack server (Rack Server), a frame may there is tens of station server, adopt the centralized power supply system of similar blade server (Blade Server), by the direct current of the unified supply of frame through step-down, as+12V DC voltage, and these servers are all without the need to self-powered individually.
For existing rack server, general employing Switching Power Supply is powered, but, for Switching Power Supply (especially high power switching power supply), all there is an intrinsic shortcoming: powering up moment, Switching Power Supply can produce a larger surge current, and this surge current may reach 10 times ~ 100 times of power supply static working current.Because Switching Power Supply easily produces surge current, such as, started shooting by all servers simultaneously, Switching Power Supply will be made to produce strong surge current, this powers to power supply and machine room and even to be damaged by build-up of pressure.Another kind of common situation is, part of server is run, and part of server is started shooting suddenly in addition, at this moment the voltage that the surge current produced may cause power supply to provide reduces, and can cause the server instant power-down of other normal operating conditions using same input power time serious.
In view of this, how to design a kind of rack-mounted server system, so that during one or more server normal boot-strap in system, eliminate the surge current produced, and the supply voltage of maintained switch power supply is stablized, it is the problem that person skilled is urgently to be resolved hurrily in the industry.
Summary of the invention
In order to solve the problem, the present invention proposes a kind of rack-mounted server system, comprise a power supply unit and multiple server, power supply unit is used for providing the operating voltage needed for normally running to multiple server, this server system also comprises a soft starting circuit, be coupled between power supply unit and multiple server, this soft starting circuit has: an input end, is coupled to one first DC voltage from power supply unit; One constant-current source circuit, is coupled to input end, provides a steady current; One biasing circuit, is coupled to constant-current source circuit, provides one slowly to rise and has the bias voltage of a preset upper limit value; One first on-off element, there is one first electrode, one second electrode and one first control electrode, first electrode is coupled to input end, first control electrode is coupled to biasing circuit, the first on-off element is driven, to make the first on-off element from cut-off state to saturation conduction status transition by bias voltage; And an output terminal, be coupled to the second electrode of the first on-off element, export one second DC voltage when the first on-off element saturation conduction.
Preferably, above-mentioned first on-off element is P-channel field-effect transistor (PEFT) pipe.
Preferably, above-mentioned constant-current source circuit comprises: one first diode, and its positive pole is coupled to above-mentioned input end; One second diode, its positive pole is coupled to the negative pole of the first diode; One second switch element, have one the 3rd electrode, one the 4th electrode and one second control electrode, the 3rd electrode is coupled to the negative pole of the second diode, and the 4th electrode is coupled to an earth terminal through one first resistance; And one the 3rd on-off element, have one the 5th electrode, one the 6th electrode and one the 3rd control electrode, the 3rd control electrode couples the second control electrode, and the 5th electrode is coupled to above-mentioned input end through one second resistance.
Preferably, above-mentioned second switch element and above-mentioned 3rd on-off element are transistor.
Preferably, above-mentioned biasing circuit comprises: one first electric capacity, and its one end is coupled to above-mentioned 6th electrode, and the other end is coupled to above-mentioned earth terminal, and the above-mentioned steady current that above constant-current source circuit provides charges, to provide above-mentioned bias voltage; And a voltage stabilizing diode, its positive pole is coupled to above-mentioned earth terminal, and negative pole is coupled to above-mentioned 6th electrode, when the bias voltage loading on above-mentioned first electric capacity two ends reaches above-mentioned preset upper limit value, above-mentioned voltage stabilizing diode conducting, stops charging to make above-mentioned first electric capacity.
Preferably, above-mentioned biasing circuit also comprises: one the 4th on-off element, there is one the 7th electrode, one the 8th electrode and one the 4th control electrode, 4th control electrode couples mutually with one end of above-mentioned first electric capacity, the negative pole of above-mentioned voltage stabilizing diode and the 6th electrode, 7th electrode is coupled to above-mentioned earth terminal through one the 3rd resistance, and the 8th electrode and above-mentioned first control electrode couple mutually and be coupled to above-mentioned input end through one the 4th resistance.
Preferably, above-mentioned soft starting circuit also comprises: one second electric capacity, and its one end is coupled to above-mentioned second electrode, and the other end is coupled to above-mentioned earth terminal.
Preferably, above-mentioned soft starting circuit also comprises: a relay, there is a contact part and a coiler part, contact part is connected in parallel in and between the first electrode of above-mentioned first on-off element and the second electrode, coiler part couples mutually with the positive pole of above-mentioned voltage stabilizing diode, when after above-mentioned voltage stabilizing diode conducting, relay closes is powered to above-mentioned output terminal through relay to make above-mentioned input end.
Preferably, above-mentioned contact part has one first stationary contact, one second stationary contact, one first moving contact and one second moving contact, first stationary contact and the second stationary contact are respectively coupled to the first electrode and second electrode of the first on-off element, wherein, first moving contact corresponds to the first stationary contact, and second moving contact correspond to the second stationary contact, when after voltage stabilizing diode conducting, first moving contact and the first stationary contact phase adhesive, and the second moving contact and the second stationary contact phase adhesive, thus input end is powered to output terminal through relay.
Adopt rack-mounted server system of the present invention, by arranging a soft starting circuit between power supply unit and multiple server, the time that the voltage carrying out Control Server end slowly rises, thus the impact of surge current on the DC voltage that power supply unit exports can be reduced, and then ensure the reliability of system cloud gray model, reduce maintenance cost.
Accompanying drawing explanation
Fig. 1 illustrates the structured flowchart of rack-mounted server system according to an aspect of the present invention;
Fig. 2 illustrates the circuit diagram of a preferred embodiment of the soft starting circuit of the rack-mounted server system in Fig. 1; And
Fig. 3 illustrates the circuit diagram of another preferred embodiment of the soft starting circuit of the rack-mounted server system in Fig. 1.
Embodiment
Below will know explaination embodiments of the present invention with accompanying drawing and detailed description, for simplifying for the purpose of accompanying drawing, some known usual structures and assembly illustrate in the mode simply illustrated in the accompanying drawings.
Fig. 1 illustrates the structured flowchart of rack-mounted server system according to an aspect of the present invention.With reference to Fig. 1, the soft starting circuit 100 that this rack-mounted server system comprises power supply unit 200, multiple server (as server 1, server 2, server 3 and server 4, but not as limit) and is arranged between this power supply unit 200 and multiple server.
As previously mentioned, in existing server system, power supply unit 200 is directly connected with multiple server, to provide operating voltage during these server normal operations.But, when part server runs, and when part of server is opened suddenly in addition, larger surge current can be produced in systems in which, owing to there is no isolation between power supply unit 200 and these servers, then larger surge current can have an impact to the DC voltage that power supply unit 200 exports.Such as, voltage when server normally runs is 12V, but the impact of surge current may cause the current voltage being input to server to be reduced to 10V or lower.In view of this, the present invention devises a kind of soft starting circuit, between power supply unit and multiple server, is realizing while voltage slowly rises, also can reducing or eliminating surge current, providing the stability of server system.
Particularly, soft starting circuit 100 comprises: input end 110, constant-current source circuit 120, biasing circuit 130,1 first on-off element 140 and an output terminal 150.Wherein, input end 110 is coupled to one first DC voltage from power supply unit 200; Constant-current source circuit 120, is coupled to input end 110, in order to provide a steady current; Biasing circuit 130, is coupled to constant-current source circuit 120, slowly rises and have the bias voltage of a preset upper limit value in order to provide one; First on-off element 140, is coupled to input end 110 and biasing circuit 130, drives the first on-off element 140 by bias voltage, makes it from cut-off state to saturation conduction status transition; Output terminal 130, is coupled to the first on-off element 140, exports one second DC voltage when the first on-off element 140 saturation conduction.
Fig. 2 illustrates the circuit diagram of a preferred embodiment of the soft starting circuit of the rack-mounted server system in Fig. 1.As shown in Figure 2, first on-off element (Q4) 140 is P-channel field-effect transistor (PEFT) pipe, in the present embodiment, preferably, for P channel metal-oxide-semiconductor field, and be the field effect transistor of high-power low internal resistance, there is one first electrode (source electrode), one second electrode (drain electrode) and one first control electrode (grid), it should be noted that, in the present embodiment, first electrode can be source electrode, second electrode can be drain electrode, but, in some other embodiment, first electrode can be drain electrode, second electrode can be source electrode, not as limit.First electrode is coupled to input end 110, and the second electrode couples mutually with output terminal 150, and first controls pole is coupled to biasing circuit 130.Input end 110, is coupled to the one first DC voltage V1 from power supply unit 200.Constant-current source circuit 120, being made up of the first diode D1, the second diode D2, second switch element Q1, the 3rd on-off element Q2, resistance R1 and resistance R2, this constant-current source circuit 120 can be used to provide a steady current.Wherein, the first diode D1, its positive pole is coupled to input end 110, the second diode D2, and its positive pole is coupled to the negative pole of the first diode D1, and in the present embodiment, DC voltage V1 is each step-down 0.7V after D1 and D2.Second switch element Q1, there is one the 3rd electrode (emitter), one the 4th electrode (collector) and one second control electrode (base stage), 3rd electrode is coupled to the negative pole of the second diode D2, and the 4th electrode is coupled to an earth terminal through the first resistance R1; 3rd on-off element Q2, there is one the 5th electrode (emitter), one the 6th electrode (collector) and one the 3rd control electrode (base stage), 3rd control electrode couples the second control electrode, and the 5th electrode is coupled to input end 110 through one second resistance R2.It should be noted that, second switch element Q1 and the 3rd on-off element Q2 can be transistor, in the present embodiment, preferably, is positive-negative-positive transistor, but not as limit.Biasing circuit 130 comprises: one first electric capacity C1, a voltage stabilizing diode WD1, one the 4th on-off element Q3, one the 3rd resistance R3 and the 4th resistance R4.First electric capacity C1, its one end is coupled to the 6th electrode, the other end is coupled to earth terminal, first electric capacity C1, the steady current that constant-current source circuit 120 can be utilized to provide charges to it, and then form certain voltage at its two ends, namely utilize the first electric capacity C1 to provide aforementioned bias voltage, this bias voltage can be used for driving first on-off element Q4; Voltage stabilizing diode WD1, its positive pole is coupled to earth terminal, negative pole is coupled to the 6th electrode, and when the voltage at the two ends of the first electric capacity C1 reaches preset upper limit value, then voltage stabilizing diode WD1 conducting, i.e. reverse breakdown, now because the first electric capacity C1 is by voltage stabilizing diode WD1 short circuit, makes constant-current source circuit 120 stop charging to the first electric capacity C1; 4th on-off element Q3, there is one the 7th electrode (emitter), one the 8th electrode (collector) and one the 4th control electrode (base stage), 4th control electrode and the first electric capacity C1 are coupled to a first node and couple with the 6th electrode, 7th electrode is coupled to earth terminal through the 3rd resistance R3,8th electrode and the first control electrode are coupled to a Section Point and are coupled to input end 110 through the 4th resistance R4, in the present embodiment, 4th on-off element Q3 can be transistor, preferably, for negative-positive-negative transistor, but not as limit.In this soft starting circuit, can also comprise one second electric capacity C2, the second electric capacity C2 is used for filtering clutter signal, makes output terminal 150 export DC voltage.
Charge to the first electric capacity C1 due to constant-current source circuit 120 and make to be formed between the first electric capacity C1 two ends certain voltage, its magnitude of voltage also slowly rises, when the first electric capacity C1 both end voltage rises to certain value, now the 4th on-off element Q3 conducting, Q3 conducting, then make the 3rd resistance R3 forms certain electric current, thus make generation current on the 4th resistance R4, and then first the current potential at Section Point place that is connected with the 8th electrode of control electrode will reduce, thus make first control electrode of the first on-off element Q4 and the first electrode form negative bias, and according to the characteristic of the first on-off element, when negative bias acquires a certain degree, namely when the current potential at Section Point place that the first control electrode is connected with the 8th electrode is reduced to certain value, the first on-off element Q4 will be made to start conducting, when the first electric capacity C1 both end voltage continues to raise, when being elevated to certain value, voltage stabilizing diode WD1 conducting, because the first electric capacity C1 is by voltage stabilizing diode WD1 short circuit, constant-current source circuit 120 stops charging to the first electric capacity C1, and now, first control electrode of the first on-off element Q4 and the first interelectrode voltage will make the first on-off element Q4 saturation conduction, thus make output terminal 150 export one second DC voltage V2.In the present embodiment, (the first on-off element Q4 saturation conduction) is stopped to need the regular hour because the first electric capacity C1 is charged to charging from just, namely, when input end 110 inputs the first DC voltage V1, output terminal 150 will just export the second DC voltage V2 after a certain time, therefore, this soft starting circuit has certain time delay, and then efficiently avoid the adverse effect of surge current to server system.
Design parameter below in conjunction with each element is described scheme proposed by the invention and superiority thereof, in the present embodiment, first DC voltage V1 is 12.5V, first diode D1, the forward voltage drop of the second diode D2 is 0.7V, the burning voltage of voltage stabilizing diode is 5V, the capacitance of the first electric capacity C1 is 22 μ F, the resistance of the first resistance R1 is 30K, the resistance of the second resistance R2 is 3K, the resistance of the 3rd resistance R3 is 20K, the resistance of the 4th resistance R4 is 33K, during the 4th on-off element Q3 conducting, the 4th control electrode (base stage) is 0.7V with the pressure drop of the 7th electrode (emitter), first on-off element Q4 is P channel metal-oxide-semiconductor field, and be the field effect transistor of high-power low internal resistance.As from the foregoing, constant-current source circuit 120 makes the first electric capacity C1 both end voltage Vc1 raise gradually to the first electric capacity C1 charging, charging current I=1.4V/R2=1.4V/ (3K), when after charging certain hour, when first electric capacity C1 both end voltage Vc1 is 0.7V, 4th on-off element Q3 starts conducting, thus the 3rd resistance R3 will form electric current, its size is (Vc1-0.7)/R3, and then the pressure drop of R4 is (Vc1-0.7) R4/R3, therefore the current potential at Section Point place is (Vin-(Vc1-0.7) R4/R3), therefore, first control electrode and the first interelectrode voltage of the first on-off element Q4 are-(Vc1-0.7) R4/R3), namely when Vc1 is greater than 0.7V, it is a negative pressure, make to form negative bias between the first control electrode and the first electrode.In the present embodiment, because the first on-off element Q4 is P channel metal-oxide-semiconductor field, and be the field effect transistor of high-power low internal resistance, according to its characteristic, when negative bias reaches certain value, the first on-off element Q4 will be made to start conducting, when negative bias reaches another value, first on-off element Q4 will enter saturation conduction, in the present embodiment, when Vc1 raises as 2V, first on-off element Q4 starts conducting, and when Vc1 raises as 5V, first on-off element Q4 saturation conduction, and for making Vc1 reach 5V, time T=(5V*C1)/I needed for then the first electric capacity C1 being charged, wherein, C1=22 μ F, I=1.4V/ (3K), it can thus be appreciated that T is about 240 milliseconds, this time is far longer than surge current general duration.When the first firm conducting of on-off element Q4, the output voltage V2 of output terminal rises gradually, namely the voltage being supplied to server (as Fig. 1) will rise gradually, when the first on-off element Q4 saturation conduction, the output voltage V2 of output terminal is preferably 12V DC voltage, and now, load end is connected with power supply unit 200 (as Fig. 1) by this low internal resistance of the first on-off element Q4, and at this moment, power supply unit 200 is by clean boot.
In the present embodiment, due to the voltage V1 that power supply unit 200 provides, carry out after a fixed response time (duration of surge current is less than this time delay) through this soft starting circuit, power supply unit 200 provides voltage to server (load) by output terminal 150 again, by this, the impact that power supply unit 200 produces itself or server (load) because producing surge current can be overcome.
It should be noted that, each component parameters in above-mentioned soft starting circuit, is only exemplary, but not as limit.
The circuit diagram of another preferred embodiment of the soft starting circuit of the rack-mounted server system in Fig. 1 is shown with reference to Fig. 3, Fig. 3.Only be that soft starting circuit also comprises with difference shown in Fig. 2 shown in Fig. 3: a relay (sign), and other parts are identical, therefore repeat no more.This relay is for the protection of the first on-off element Q4; it is described in detail in detail; power supply unit 200 (as Fig. 1) provides required voltage to give server (as Fig. 1) and the electric current flowing through the first on-off element Q4 may be caused excessive; the first on-off element Q4 may be damaged like this; therefore, in the present embodiment, relay is added; can said circumstances be avoided, concrete with reference to describing as follows.
As shown in Figure 3, relay has coiler part 161 and a contact part 162, wherein between contact part 162 the first electrode of being connected in parallel in the first on-off element Q4 and the second electrode, coiler part 161 couples mutually with the positive pole of voltage stabilizing diode WD1, when after voltage stabilizing diode WD1 conducting, relay closes is powered to output terminal 150 through relay to make input end 110.
As shown in Figure 3, contact part 162 has one first stationary contact, one second stationary contact, one first moving contact and one second moving contact.First stationary contact and the second stationary contact are respectively coupled to the first electrode and second electrode of the first on-off element Q4, and, first moving contact corresponds to the first stationary contact, and second moving contact correspond to the second stationary contact, when after voltage stabilizing diode WD1 conducting, first moving contact and the first stationary contact phase adhesive and the second moving contact and the second stationary contact phase adhesive, to make relay closes and to make input end 110 power to output terminal 150 through relay, namely provide required voltage to server.Separately, when voltage stabilizing diode WD1 conducting, now the first on-off element Q4 is in saturation conduction, its internal resistance is very little, thus make the output voltage V2 of output terminal 150 relatively high, namely server required voltage has been met, and because time delay has overcome the impact that power supply unit 200 produces itself or server (load) because producing surge current, and relay closes at this moment, and the electric current flowing through the first on-off element Q4 before making all changes its course and flows through relay, thus make output terminal 150 directly export relatively High Level DC Voltage V2.Further, now, the first on-off element Q4 no longer consumed power, thus therefore overall power-efficient is not declined.
Adopt rack-mounted server system of the present invention, by arranging a soft starting circuit between power supply unit and multiple server, the time that the voltage carrying out Control Server end slowly rises, thus the impact of surge current on the DC voltage that power supply unit exports can be reduced, and then ensure the reliability of system cloud gray model, reduce maintenance cost.
Above, the specific embodiment of the present invention is described with reference to the accompanying drawings.But those skilled in the art can understand, when without departing from the spirit and scope of the present invention, various change and replacement can also be done to the specific embodiment of the present invention.These change and replace and all drop in claims of the present invention limited range.
Claims (7)
1. a rack-mounted server system, comprise a power supply unit and multiple server, described power supply unit is used for providing the operating voltage needed for normally running to described multiple server, it is characterized in that, also comprise a soft starting circuit, be coupled between described power supply unit and described multiple server, have:
One input end, is coupled to one first DC voltage from described power supply unit;
One constant-current source circuit, is coupled to described input end, provides a steady current, and described constant-current source circuit comprises:
One first diode, its positive pole is coupled to described input end;
One second diode, its positive pole is coupled to the negative pole of described first diode;
One second switch element, have one the 3rd electrode, one the 4th electrode and one second control electrode, described 3rd electrode is coupled to the negative pole of described second diode, and described 4th electrode is coupled to an earth terminal through one first resistance; And
One the 3rd on-off element, have one the 5th electrode, one the 6th electrode and one the 3rd control electrode, described 3rd control electrode couples described second control electrode, and described 5th electrode is coupled to described input end through one second resistance;
One biasing circuit, is coupled to described constant-current source circuit, and provide one slowly to rise and have the bias voltage of a preset upper limit value, described biasing circuit comprises:
One first electric capacity, its one end is coupled to described 6th electrode, and the other end is coupled to described earth terminal, and the described steady current provided by described constant-current source circuit charges, to provide described bias voltage; And
One voltage stabilizing diode, its positive pole is coupled to described earth terminal, and negative pole is coupled to described 6th electrode, and when the bias voltage loading on described first electric capacity two ends reaches described preset upper limit value, described voltage stabilizing diode conducting, stops charging to make described first electric capacity;
One first on-off element, there is one first electrode, one second electrode and one first control electrode, described first electrode is coupled to described input end, described first control electrode is coupled to described biasing circuit, described first on-off element is driven, to make described first on-off element from cut-off state to saturation conduction status transition by described bias voltage; And
One output terminal, is coupled to described second electrode of described first on-off element, exports one second DC voltage when described first on-off element saturation conduction.
2. rack-mounted server system according to claim 1, is characterized in that, described first on-off element is P-channel field-effect transistor (PEFT) pipe.
3. rack-mounted server system according to claim 1, is characterized in that, described second switch element and described 3rd on-off element are transistor.
4. rack-mounted server system according to claim 1, is characterized in that, described biasing circuit also comprises:
One the 4th on-off element, there is one the 7th electrode, one the 8th electrode and one the 4th control electrode, described 4th control electrode couples mutually with one end of described first electric capacity, the negative pole of described voltage stabilizing diode and described 6th electrode, described 7th electrode is coupled to described earth terminal through one the 3rd resistance, and described 8th electrode and described first control electrode couple mutually and be coupled to described input end through one the 4th resistance.
5. rack-mounted server system according to claim 4, is characterized in that, described soft starting circuit also comprises:
One second electric capacity, its one end is coupled to described second electrode, and the other end is coupled to described earth terminal.
6. rack-mounted server system according to claim 5, is characterized in that, described soft starting circuit also comprises:
One relay, there is a contact part and a coiler part, described contact part is connected in parallel in and between the first electrode of described first on-off element and the second electrode, described coiler part couples mutually with the positive pole of described voltage stabilizing diode, when after described voltage stabilizing diode conducting, described relay closes is powered to described output terminal through described relay to make described input end.
7. rack-mounted server system according to claim 6, it is characterized in that, described contact part has one first stationary contact, one second stationary contact, one first moving contact and one second moving contact, described first stationary contact and described second stationary contact are respectively coupled to described first electrode of described first on-off element and described second electrode, wherein, described first moving contact corresponds to described first stationary contact, and described second moving contact corresponds to described second stationary contact
When after described voltage stabilizing diode conducting, described first moving contact and described first stationary contact phase adhesive, and described second moving contact and described second stationary contact phase adhesive, thus described input end is powered to described output terminal through described relay.
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| CN105322522A (en) * | 2014-06-24 | 2016-02-10 | 中兴通讯股份有限公司 | Method and circuit for restraining surge current of DC electrical source |
| CN105515363B (en) * | 2014-09-24 | 2018-08-28 | 原景科技股份有限公司 | Power supply circuit and its soft starting circuit |
| CN109767715A (en) * | 2019-03-11 | 2019-05-17 | 京东方科技集团股份有限公司 | Soft-start circuit, integrated power supply management circuit and display equipment |
| CN112908750A (en) * | 2020-12-30 | 2021-06-04 | 深圳市劲阳电子有限公司 | Arc-extinguishing relay, arc-extinguishing device and arc-extinguishing method |
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