CN101841153A - Polyphase source supply circuit, and control circuit and method thereof - Google Patents
Polyphase source supply circuit, and control circuit and method thereof Download PDFInfo
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- CN101841153A CN101841153A CN200910128540A CN200910128540A CN101841153A CN 101841153 A CN101841153 A CN 101841153A CN 200910128540 A CN200910128540 A CN 200910128540A CN 200910128540 A CN200910128540 A CN 200910128540A CN 101841153 A CN101841153 A CN 101841153A
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- phase
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- polyphase source
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/50—Arrangements for eliminating or reducing asymmetry in polyphase networks
Abstract
The invention relates to a polyphase source supply circuit, and a control circuit and a control method thereof. The polyphase source supply circuit comprises a plurality of power conversion phases. The method comprises the following steps of: deciding whether to enter the phase reduction operation; when deciding to reduce the phases for the first time, closing at least one of the power conversion phases; and when deciding to reduce the phases for another time, closing at least another one of the power conversion phases.
Description
Technical field
The present invention relates to a kind of polyphase source supply circuit and its control circuit and method, be meant a kind of balance is respectively born mutually when subtracting phase (phase shedding) operation polyphase source supply circuit and its control circuit and method especially.
Background technology
Polyphase source supply circuit according to different sequential handover operations, is given common output with the supply electric energy by many groups switch regulator (switching regulator); Because of it has a plurality of power supply channels, each is according to different sequential operations, so be called multichannel or polyphase source supply circuit.Fig. 1 marks an example of the heterogeneous booster power supply circuit of prior art, comprise a plurality of power transfer phase place P1-Pn in this heterogeneous booster power supply circuit 1, the time sequential routine difference of power switch S1-Sn in each phase place, disperse to give each phase with the burden of will powering, and make the output current ripple comparatively little.Fig. 2 marks an example of the multi-phase and step-down power supply circuit of prior art, wherein comprise two power transfer phase places, first group of power switch S1U, S1L controls the step-down conversion of first phase place, second group of power switch S2U, the step-down conversion of second phase place of S2L control is though controlled the time sequential routine difference of two groups of power switchs by same power management chip 10.
When the load circuit that output connected is in following time of situation of underloading, polyphase source supply circuit can be closed wherein part phase place reducing switch cost, and this is called and subtracts phase (phase shedding).Subtract the phase operational example as being controlled by outside signal, ask for an interview Fig. 2, according to outside phase control signal PSC, power management chip 10 can be closed one of them phase place and be made its pausing operation.
In the prior art, when needs subtract when operating mutually, the phase place of being closed is all fixed.For example in two-phase voltage dropping power supply supply circuit shown in Figure 2, can fixedly close second phase in subtracting phase time, as shown in table 1 below.
Table 1
| Single-phase operation | Full phase operation | |
| Phase of operation | ??P1 | ??P1，P2 |
| Close phase place | ??P2 |
In other words, prior art is subtracting phase time, and the phase place of being closed does not change.Its shortcoming is, the power switch of each phase place and inductance workload are also uneven, and phase place commonly used will more early be damaged than other phase place, influence the life-span of integrated circuit.
In view of this, the present invention is promptly at above-mentioned the deficiencies in the prior art, proposes a kind ofly subtracting when operating mutually balance each polyphase source supply circuit and its control method of burden mutually.
Summary of the invention
One of the object of the invention is to overcome the deficiencies in the prior art and defective, proposes a kind of polyphase source supply circuit.
Another object of the present invention is to, propose a kind of control method of polyphase source supply circuit.
Another purpose of the present invention is, proposes a kind of control circuit of polyphase source supply circuit.
For reaching above-mentioned purpose, with regard to one of them viewpoint speech, the invention provides a kind of polyphase source supply circuit, comprise: a plurality of power transfer phase places; And determining the control circuit whether these a plurality of power transfer phase places work, this control circuit does not fixedly cut out same phase subtracting when operating mutually.
For reaching above-mentioned purpose, with regard to another viewpoint speech, the invention provides a kind of control method of polyphase source supply circuit, this polyphase source supply circuit comprises a plurality of power transfer phase places, described method comprises: whether decision enters subtracts operation mutually; Subtract phase time in decision first, close in these a plurality of power transfer phase places at least one; And subtract phase time in another time decision, close in these a plurality of power transfer phase places at least another.
When polyphase source supply circuit is a three-phase or when more heterogeneous, also comprise following steps in the said method: set and close flag in one of them phase place; And enter and subtract when operating mutually, close one or more phase place from this phase place, and this is closed flag be set in one that does not close in the phase place.
When polyphase source supply circuit is a three-phase or when more heterogeneous, also comprise following steps in the said method: the setting recovery flag is in one of them phase place of closing; And recover one or more phase place, and will recover flag and be set in the phase place of still closing one from this phase place of closing.
Just another viewpoint is sayed again, the invention provides a kind of control circuit of polyphase source supply circuit, this polyphase source supply circuit comprises a plurality of power transfer phase places, and described control circuit comprises: drive the lock control circuit, it produces and drives signal, drives each phase place and carries out the power transfer operation; And select circuitry phase, and coupling with this driving lock control circuit, this selects circuitry phase to determine whether to subtract operation mutually according to a phase control signal, subtracts phase time in decision first, and this driving lock control circuit cuts out at least one in these a plurality of power transfer phase places; Subtract phase time in another time decision, this driving lock control circuit close in these a plurality of power transfer phase places at least another.
Illustrate in detail below by specific embodiment, when the effect that is easier to understand purpose of the present invention, technology contents, characteristics and is reached.
Description of drawings
Fig. 1 is the schematic circuit diagram of the heterogeneous booster power supply circuit of prior art;
Fig. 2 is the schematic circuit diagram of the two-phase voltage dropping power supply supply circuit of prior art;
Fig. 3 marks an embodiment of control circuit of the present invention;
Fig. 4 to 7 marks four embodiment that select circuitry phase of the present invention.
Symbol description among the figure
1 heterogeneous booster power supply circuit
2 multi-phase and step-down power supply circuits
10 power management chips
12 oscillators
14 drive the lock control circuit
16 select phase control circuit
20 power supply circuit control circuits
61 comparators
62 D flip-flops
64 counters
65 analog-digital converters
66 counting circuits
67 first counters
68 second counters
The EA error amplifier
OP1, the OP2 operational amplifier
PWM1, the PWM2 comparator
S1, Sn, S1U, S1L, S2U, S2L power switch
Embodiment
Please refer to Fig. 3, wherein show first embodiment of the present invention.For the purpose of simplifying drawing, the control circuit 20 of display power supply supply circuit only among the figure is then omitted as for power switch, inductance, electric capacity etc.This control circuit 20 can be made into integrated circuit, as the power management chip among Fig. 2 10.
As shown in the figure, error amplifier EA relatively feedback signal FB produces error and amplifies signal with reference signal Vref, and this error is amplified the PWM comparator PWM1 that signal is imported out of phase, among the PWM2.Operational amplifier OP1, OP2 is the current signal ISEN1 of each phase place relatively, ISEN2 and output current signal ISEN1_N, ISEN2_N (please contrast Fig. 2) produces corresponding electric current difference and amplifies signal, also imports corresponding PWM comparator PWM1, PWM2.In addition, oscillating circuit (OSC) 12 produces sawtooth waveforms signal and PWM comparator PWM1, and the output of PWM2 is together imported and driven among the lock control circuit 14.Drive lock control circuit 14 and produce the driving signal,, drive corresponding power switch by driving lock.In the above circuit, error is amplified the electric current difference of signal, each phase and amplified signal, reaches the sawtooth waveforms signal, and comparison therebetween can change in a different manner with front and back level order to be arranged, and is shown in Figure 3 only for giving an example; For example can earlier the electric current difference be amplified signal and the addition of sawtooth waveforms signal,, so also can the negative input end that the result imports the PWM comparator again.
Whether outside phase control signal PSC decision-making circuit will enter and subtract operation mutually.This outside signal PSC can derive from load circuit, for example is the digital control signal that microcontroller or microprocessor sent in the load circuit, or is the analog signal relevant with load current.According to the form of phase control signal PSC, can corresponding design select circuitry phase 16; After selecting circuitry phase 16 to receive phase control signal PSC, whether promptly passive decision will enter subtracts mutually operation, subtracts when operating mutually when its judgement need enter, and just controlling and driving lock control circuit 14 is to cut out wherein one or more phase places.
According to the present invention, enter and subtract when operating mutually, the phase place of break-off is not fixed.Table 2 is that example shows arrangement of the present invention with the two-phase.
Table 2
| Period | ??T0 | ??T1 | ??T2 | ??T3 | ??T4 | ??T5 |
| The operation number of phases | ??2 | ??1 | ??2 | ??1 | ??2 | ??1 |
| Phase of operation | ??P1，P2 | ??P1 | ??P1，P2 | ??P2 | ??P1，P2 | ??P1 |
| Close phase place | ??P2 | ??P1 | ??P2 |
As shown in table 2, period T0, T2, T4 are normal operating state, all phase places are operate as normal all.Enter during period T1 and subtract the phase mode of operation, close one of them phase place, for example P2 this moment earlier.But (period T3) enters when subtracting the phase mode of operation in next time, then closes another phase place P1, takes turns flow operation according to this.
According to above arrangement, and suppose that signal PSC is a digital signal, when it changeed low level by high levle, expression need enter and subtract operation mutually, then selects circuitry phase 16 to be made of the D flip-flop, as shown in Figure 4.Be the D flip-flop that adopts falling edge to trigger in this figure illustrated embodiment, when signal PSC changeed low level by high levle, the output of D flip-flop was the accurate position of conversion, so the output of D flip-flop can subtract the phase place of closing when operating mutually in order to decision.
If phase control signal PSC is an analog signal, then as shown in Figure 5, only need to judge with comparator 61 whether the PSC signal is lower than preset threshold value Vr, if being lower than this default value then represents to enter and subtracts mutually operation, the output of comparator 61 promptly changes low level into by high levle, so D flip-flop 62 produces output in the mode identical with Fig. 4, decision subtracts the phase place of closing when operating mutually.
The above arrangement that is exemplified as the two-phase power supply supply circuit, as be three-phase or more heterogeneous, then D flip-flop 62 can be counter 64, as Fig. 6, just can close phase place subtracting when operating mutually conversion.
Except that the above mode, according to the present invention, which phase place is the mode of also available " flag " specify by begins to close or resume work.When polyphase source supply circuit is a three-phase or more heterogeneous, and close and a not only phase time of the phase place of resuming work, be more suitable for using this mode.This kind flag arrangement is that example is described as follows with five phase power supply circuits, sees also table 3.
Table 3
In the table 3, O represents this phase place at work, and X represents that this phase place closes, and (tag X) is flag, represents the phase place that next is closed, and (tag O) is flag, represents the phase place of next recovery.As shown in table 3, all phase places operate as normal all during period T0.Enter during period T1 and subtract the phase mode of operation, need to reduce two phase places, (tag X) flag position during according to period T0 was closed phase place P1, P2 earlier, and (tag X) flag was moved to phase place P3 this moment.Need recover a phase place during period T2, (tag O) flag position during at this moment according to period T1 is recovered phase place P1 earlier, and (tag O) flag is moved to phase place P2.Need reduce by three phase places again during period T3, (tag X) flag position during at this moment according to period T2 is closed phase place P3, P4, P5, and (tag X) flag is moved to phase place P1.Need recover two phase places during period T4, phase place P2, P3 are recovered in (tag O) flag position during at this moment according to period T3, and (tag O) flag is moved to phase place P4.Need recover a phase place during period T5, (tag O) flag position during at this moment according to period T4 is recovered phase place P4 earlier, and (tag O) flag is moved to phase place P5.
Above flag arrangement, the visible Fig. 7 (below Fig. 3) of one of its physical circuit example.Signal PSC is an analog signal, answers the number of phase of operation according to its accurate position decision.Analog-digital converter (ADC) 65 is converted to digital signal with signal PSC; Counting circuit 66 is compared the number of phases that decision should reduce or recover with this digital value (desired value) with the number of phases (value at present) of operation at present.According to the output of counting circuit 66, when needs subtract phase time, the position of the output of first counter 67 decision flag (tag X); When needs recover phase place, the position of the output of second counter 68 decision (tag O).
Below at preferred embodiment the present invention is described, the above for making those skilled in the art be easy to understand content of the present invention, is not to be used for limiting interest field of the present invention only.Under same spirit of the present invention, those skilled in the art can think and various equivalence changes.For example, the order of closing phase place must be according to phase sequence, and can jump over mode conversion at random or with other; The order that recovers phase place is as the same.And for example, close or the phase place recovered must not need each conversion, and conversion again after can be for several times (as, change second phase place again after first phase place is closed twice and close twice).For another example, the recovery flag in the table 3 (tag O) can exist when operating mutually entirely, only needs to get final product subtracting to produce when operating mutually.All this kind all should be included within the scope of the present invention.
Claims (14)
1. a polyphase source supply circuit is characterized in that, comprises:
A plurality of power transfer phase places; And
Determine the control circuit whether these a plurality of power transfer phase places work, this control circuit does not fixedly cut out same phase subtracting when operating mutually.
2. polyphase source supply circuit as claimed in claim 1, wherein, this control circuit cuts out phase place in regular turn in turn subtracting when operating mutually.
3. polyphase source supply circuit as claimed in claim 1, wherein, this polyphase source supply circuit is for boosting or reduction voltage circuit.
4. the control method of a polyphase source supply circuit, this polyphase source supply circuit comprises a plurality of power transfer phase places, it is characterized in that, described method comprises:
Whether decision enters subtracts operation mutually;
Subtract phase time in decision first, close in these a plurality of power transfer phase places at least one; And
Subtract phase time in another time decision, close in these a plurality of power transfer phase places at least another.
5. the control method of polyphase source supply circuit as claimed in claim 4 wherein, also comprises:
Setting is closed flag in one of them phase place; And
Enter and subtract when operating mutually, close one or more phase place, and this is closed flag be set in one that does not close in the phase place from this phase place.
6. the control method of polyphase source supply circuit as claimed in claim 5 wherein, also comprises:
The setting recovery flag is in one of them phase place of closing; And
Recover one or more phase place from this phase place of closing, and will recover flag and be set in the phase place of still closing one.
7. the control method of polyphase source supply circuit as claimed in claim 4 wherein, also comprises: receive a phase control signal, and according to this signal and whether passive decision enters and subtract operation mutually.
8. the control method of polyphase source supply circuit as claimed in claim 7 wherein, also comprises: this phase control signal is converted to digital signal.
9. the control circuit of a polyphase source supply circuit, this polyphase source supply circuit comprises a plurality of power transfer phase places, it is characterized in that, described control circuit comprises:
Drive the lock control circuit, it produces and drives signal, drives each phase place and carries out the power transfer operation; And
Select circuitry phase, couple with this driving lock control circuit, this selects circuitry phase to determine whether to subtract operation mutually according to a phase control signal, subtracts phase time in decision first, and this driving lock control circuit cuts out at least one in these a plurality of power transfer phase places; Subtract phase time in another time decision, this driving lock control circuit close in these a plurality of power transfer phase places at least another.
10. the control circuit of polyphase source supply circuit as claimed in claim 9, wherein, this selects circuitry phase to comprise a D flip-flop, the phase place that its output decision is closed.
11. the control circuit of polyphase source supply circuit as claimed in claim 10, wherein, this phase control signal is an analog signal, and this selects circuitry phase also to comprise a comparator, controls this D flip-flop according to its comparative result.
12. the control circuit of polyphase source supply circuit as claimed in claim 9, wherein, this selects circuitry phase to comprise a counter, the phase place that its output decision is closed.
13. the control circuit of polyphase source supply circuit as claimed in claim 9, wherein, this selects circuitry phase to comprise:
One counting circuit, the desired value of the phase place that it should be operated is compared the number of phases that decision should be closed or recover with present value;
First counter couples with this counting circuit, and which phase place the output decision of this first counter should begin to close from; And
Second counter couples with this counting circuit, and which phase place the output decision of this second counter should begin to recover from.
14. the control circuit of polyphase source supply circuit as claimed in claim 13, wherein, this selects circuitry phase also to comprise an analog-digital converter, and this phase control signal is converted to digital signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910128540A CN101841153A (en) | 2009-03-16 | 2009-03-16 | Polyphase source supply circuit, and control circuit and method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910128540A CN101841153A (en) | 2009-03-16 | 2009-03-16 | Polyphase source supply circuit, and control circuit and method thereof |
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|---|---|
| CN101841153A true CN101841153A (en) | 2010-09-22 |
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| CN200910128540A Pending CN101841153A (en) | 2009-03-16 | 2009-03-16 | Polyphase source supply circuit, and control circuit and method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103186224A (en) * | 2011-12-30 | 2013-07-03 | 鸿富锦精密工业（深圳）有限公司 | Main board |
| CN103676815A (en) * | 2012-08-31 | 2014-03-26 | 技嘉科技股份有限公司 | Multi-phase power supply |
| CN103869924A (en) * | 2012-12-10 | 2014-06-18 | 宏碁股份有限公司 | Electric power supply device |
| WO2022160257A1 (en) * | 2021-01-29 | 2022-08-04 | 华为技术有限公司 | Multi-phase power supply apparatus and control method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070013350A1 (en) * | 2004-07-02 | 2007-01-18 | Benjamim Tang | Multiphase power regulator with load adaptive phase control |
| CN101275173A (en) * | 2007-03-27 | 2008-10-01 | 宝山钢铁股份有限公司 | Control method for equilibrium operation of converter dust-removing flue cooling fan |
-
2009
- 2009-03-16 CN CN200910128540A patent/CN101841153A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070013350A1 (en) * | 2004-07-02 | 2007-01-18 | Benjamim Tang | Multiphase power regulator with load adaptive phase control |
| CN101275173A (en) * | 2007-03-27 | 2008-10-01 | 宝山钢铁股份有限公司 | Control method for equilibrium operation of converter dust-removing flue cooling fan |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103186224A (en) * | 2011-12-30 | 2013-07-03 | 鸿富锦精密工业（深圳）有限公司 | Main board |
| CN103676815A (en) * | 2012-08-31 | 2014-03-26 | 技嘉科技股份有限公司 | Multi-phase power supply |
| CN103869924A (en) * | 2012-12-10 | 2014-06-18 | 宏碁股份有限公司 | Electric power supply device |
| CN103869924B (en) * | 2012-12-10 | 2017-05-17 | 宏碁股份有限公司 | Electric power supply device |
| WO2022160257A1 (en) * | 2021-01-29 | 2022-08-04 | 华为技术有限公司 | Multi-phase power supply apparatus and control method |
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Application publication date: 20100922 |