CN101211191B - Directional regulating circuit - Google Patents

Abstract

The invention provides a directional regulating circuit, which is used for regulating at least two paths of output auxiliary circuit signals of a signal source, and comprises a mutual inductor, wherein the mutual inductor comprises at least two groups of windings, the first winding of the mutual inductor is connected in series on one output auxiliary circuit needing signal regulation, and at least another winding of the mutual inductor is connected in series on at least another output auxiliary circuit needing signal regulation; the directional regulating circuit provided by the invention is adopted to carry out amplitude modulation or voltage regulation on the signal output signal of the signal source or the power supply, the regulating amplitude can be larger, no loss is caused, and the efficiency and the reliability of the signal source are improved; the energy of the output signal higher loop can be directly compensated into the output loop with lower output signal, so that the energy-saving effect is achieved on the whole signal source; the signal adjusting amplitude can be directly quantized and calculated and is not influenced by the duty ratio; the signal conditioning cost is low, and the cost performance is high.

Description

A kind of directional regulation circuit

Technical field

The present invention relates to the basic electronic circuit technical field, particularly a kind of directional regulation circuit.

Background technology

At present, in the multiple-output electric power that industry is used, because the transformer number of turn can only the round numbers circle and the existence of other factor, particularly the transformer number of turn rounds and (can get half turn for the transformer of minority special applications is possible, but get the air gap pattern of the transformer of half turn to magnetic core, the distribution of winding, or winding extension line mode just has specific (special) requirements, can increase the coiling cost of transformer), transformer respectively export rounding that the concrete number of turn of winding generally all rounds up, and go into and house that each winding rounds may be inconsistent, and the voltage turn ratio that rounds of voltage turn ratio that each bypass winding rounds and main road also may be inconsistent.Make that each Winding Design output voltage will be variant with the specified voltage in each road, may be higher or on the low side, the precision of voltage regulation to the output of each road requires just greatly to improve like this, and the voltage of the every circle correspondence of transformer secondary may be severally to lie prostrate several volts and do not wait zero point generally speaking.Under the same terms, the number of turn of big more each winding of correspondence of power is just few more, and the voltage of every circle correspondence is just high more, at present on the industry middle low power multiple-output electric power, considering under the comprehensive price ratio prerequisite that the voltage of the general every circle correspondence of transformer secondary is about 0.5V lies prostrate to 2V.More and more higher for present device to the power source voltage accuracy requirement, and under the relative more and more stable applied environment of working current, this situation is very disadvantageous.

At above-mentioned situation a kind of inductance voltage-regulating technique was proposed, before output filtering, add an energy hysteresis circuitry, reduce this road output voltage by the energy that reduces this road output, its energy that reduces compensates to automatically in each road output by transformer and (comprises in the main road output of band feedback).

The physical circuit of this inductance voltage-regulating technique is seen accompanying drawing 1, before the output rectifying and wave-filtering, add an inductance, this inductance is single inductance, with other winding institute coilloading be separate, what it utilized is that the preceding voltage and current of power supply output rectifying and wave-filtering is that high frequency changes, and the principle that the electric current on the inductance can not suddenly change, when electric current rises, will produce a back electromotive force on the inductance, it is opposite that the voltage direction that comes from the coupling of former limit on the corresponding Transformer Winding is exported on this back electromotive force direction and this road, thereby offset this road Transformer Winding part output voltage, makes portion of energy can not deliver to output terminal, this road output voltage thereby decline reach the pressure regulation purpose.This part energy has been transferred to other each winding by transformer simultaneously, comprises main road, but because energy is less, and the main road dutycycle can only slightly be regulated or not regulate, and other road output circuit all has small size rising.Though advantages such as that this voltage-regulating technique has is lossless, simple, reliable, low cost still have the following disadvantages:

1, when this inductance voltage-regulating technique of certain road output employing, its energy compensating that reduces is in all the other each road outputs, comprise that original output is higher but other output road that the precision of voltage regulation does not exceed standard, this just may cause these to export the output voltage precision of voltage regulation on roads thereby exceed standard;

2, when this inductance voltage-regulating technique of certain road output employing, its energy compensating that reduces is in all the other each road outputs, comprise the main road output of band feedback, when the main road output voltage is under some influence, will inevitably cause the adjusting of dutycycle, therefore, this voltage-regulating technique is limited to exporting output road compensation on the low side;

3, this inductance voltage-regulating technique is adopted in output when certain road, other output rood to compensation be relevant with transformer, fixing basically, can't compensate as required.

Summary of the invention

The object of the invention is, a kind of directional regulation circuit is provided, to realize the adjusting to the multiple signal source multichannel output signal that comprises power supply.

The present invention proposes a kind of directional regulation circuit, be used for the output of the two-way at least bypass signal of signal source is regulated, directional regulation circuit comprises a mutual inductor, mutual inductor comprises at least two group windings, needs carry out Signal Regulation one output bypass on the polyphone mutual inductor first winding, needs carry out Signal Regulation at least another output bypass on the polyphone mutual inductor another winding at least.First winding of above-mentioned mutual inductor and at least the signal flow of end of the same name and the output of the two-way at least bypass of another winding to opposite, make first winding and the flow direction that produces of another winding is opposite at least in mutual inductor, the output energy compensating of one output bypass is the output energy of another output bypass at least, make the signal weakening of one tunnel output bypass, the signal of another output bypass strengthens at least.Or the signal flow of the end of the same name of first winding of above-mentioned mutual inductor and another winding at least and two-way output bypass at least is to identical, the flow direction that first winding and another winding are at least produced in mutual inductor is identical, and two-way output bypass output signal all weakens at least.When mutual inductor comprises at least three group windings, the signal flows of the end of the same name of three groups of windings and at least three tunnel output bypasses make at least three tunnel output bypass output signals strengthen respectively, weaken or constant when the part same section is opposite.Wherein signal source comprises power supply, pulse signal source or other signal sources.Above-mentioned directional regulation circuit can comprise filter capacitor, is connected with an end of filter capacitor behind at least one winding of at least one signal output part serial connection mutual inductor of signal source, and the other end of filter capacitor is connected with another utmost point of at least one signal output part.Above-mentioned directional regulation circuit also comprises at least one commutation diode, commutation diode is serially connected between the end of at least one signal output part that need carry out Signal Regulation and at least one winding of mutual inductor, or be serially connected between at least one signal output part and the filter capacitor, or be serially connected between the end and filter capacitor of at least one winding of mutual inductor.Wherein mutual inductor is inductor, transformer, other magnetic coupling device or other signal coupler spare, by the turn ratio between at least two group windings that change mutual inductor, conditioning signal regulated quantity.Above-mentioned directional regulation circuit can be applicable to comprise in the multiple signal source topology of buck, boost type, step-down/up type, inverse-excitation type, positive activation type, semibridge system, full-bridge type, push-pull type.

Adopt directional regulation circuit technology provided by the invention that signal source output signal or power supply are carried out amplitude modulation or pressure regulation, regulating amplitude can be bigger, can not bring loss, helps the raising of signal source efficient and reliability; Can with the higher loop power direct compensation of output signal in output signal output loop on the low side, play energy-conserving action to whole signal source; The Signal Regulation amplitude can directly quantize to calculate, and not influenced by dutycycle; The Signal Regulation cost is low, the cost performance height; And be connected in series inductance in the output loop, favourable to the electromagnetic compatibility of output.

Description of drawings

Fig. 1 is the circuit diagram of prior art of the present invention;

Fig. 2 is the circuit diagram of first embodiment of the invention;

Fig. 3-the 1st, the voltage waveform view of first embodiment of the invention institute's string mutual inductor winding on an output bypass;

Fig. 3-the 2nd, the voltage waveform view of the institute string mutual inductor winding of first embodiment of the invention on another output bypass;

Fig. 4 is the circuit diagram of second embodiment of the invention;

Fig. 5 is the circuit diagram of third embodiment of the invention;

Fig. 6 is the circuit diagram of fourth embodiment of the invention;

Fig. 7 is the circuit diagram of fifth embodiment of the invention;

Fig. 8-the 1st, the voltage waveform view of fifth embodiment of the invention institute's string mutual inductor winding on an output bypass;

Fig. 8-the 2nd, the voltage waveform view of the institute string mutual inductor winding of fifth embodiment of the invention on another output bypass;

Fig. 9 is the circuit diagram of sixth embodiment of the invention;

Figure 10 is the circuit diagram of seventh embodiment of the invention;

Figure 11 is the circuit diagram of eighth embodiment of the invention;

Figure 12 is the circuit diagram of ninth embodiment of the invention.

The realization of the object of the invention, functional characteristics and advantage will be in conjunction with the embodiments, are described further with reference to accompanying drawing.

Embodiment

With reference to Fig. 2 the first embodiment of the present invention is shown, the cardinal principle of present embodiment is that the portion of energy orientation by mutual inductor output road that output voltage is higher passes to output voltage output road on the low side, realizes the lifting/voltage reducing pressure regulation to multiple power supplies output bypass.

Present embodiment supposes that based on the inverse-excitation type multiple-output electric power of one three tunnel output needing the output road of directed pressure regulation is Vo2, Vo3 road, and wherein Vo2 road voltage is on the low side, and Vo3 road voltage is higher.Carry out the first winding L 1a of polyphone inductor L1 on the output bypass Vo2 that voltage adjusts at needs, carry out the second winding L 1b of polyphone inductor L1 on another road output bypass Vo3 that voltage adjusts at needs, the output current of output bypass Vo2, Vo3 flows to inequality with the end of the same name of the inductor first winding L 1a and the second winding L 1b respectively, and the flow direction that the electric current on Vo2, Vo3 road is produced in inductance L 1 magnetic core is opposite.As shown in Figure 2, the winding of inductance L 1 string on the Vo2 road is L1a, and the number of turn is Na, and the voltage on the winding L 1a is VL1a; The winding of inductance L 1 string on the Vo3 road is L1b, and the number of turn is Nb, and the voltage on the winding L 1b is VL1b; The inductance coefficent of the magnetic core of inductance L 1 is AL, is coefficient of mutual inductance for unity couping between winding L 1a and winding L 1b In conjunction with Fig. 3-1 and Fig. 3-2, the output voltage of two-way before the coilloading pressure regulation not is respectively:

Vo2old＝(ULs2-VD2)(1-D)

Vo3old＝(ULs3-VD3)(1-D)

Output voltage to two-way after the coilloading pressure regulation is respectively:

$\mathrm{VL}1a=L1\mathrm{<figure-callout\; id="2"\; label="a\; dILs"\; filenames="H200610168293XE00061.png"\; state="\{\{state\}\}">a</figure-callout>}\frac{\mathrm{dILs}}{}\frac{2}{\mathrm{dt}}-\frac{M\&times;\mathrm{<figure-callout\; id="3"\; label="dILs"\; filenames="H200610168293XE00022.png,H200610168293XE00043.png"\; state="\{\{state\}\}">dILs</figure-callout>}3}{\mathrm{dt}}=\mathrm{AL}\&times;{\mathrm{<figure-callout\; id="2"\; label="Na"\; filenames="H200610168293XE00061.png"\; state="\{\{state\}\}">Na</figure-callout>}}^2\frac{\mathrm{<figure-callout\; id="2"\; label="dILs"\; filenames="H200610168293XE00061.png"\; state="\{\{state\}\}">dILs</figure-callout>}2}{\mathrm{dt}}-\frac{\mathrm{AL}\&times;\mathrm{Nb}\&times;\mathrm{Na}\&times;\mathrm{<figure-callout\; id="3"\; label="dILs"\; filenames="H200610168293XE00022.png,H200610168293XE00043.png"\; state="\{\{state\}\}">dILs</figure-callout>}3}{\mathrm{dt}}$

$\mathrm{VL}1b=L1\mathrm{<figure-callout\; id="3"\; label="b\; dILs"\; filenames="H200610168293XE00022.png,H200610168293XE00043.png"\; state="\{\{state\}\}">b</figure-callout>}\frac{\mathrm{dILs}}{}\frac{3}{\mathrm{dt}}-\frac{M\&times;\mathrm{<figure-callout\; id="2"\; label="dILs"\; filenames="H200610168293XE00061.png"\; state="\{\{state\}\}">dILs</figure-callout>}2}{\mathrm{dt}}=\mathrm{AL}\&times;{\mathrm{<figure-callout\; id="2"\; label="Nb"\; filenames="H200610168293XE00061.png"\; state="\{\{state\}\}">Nb</figure-callout>}}^2\frac{\mathrm{<figure-callout\; id="3"\; label="dILs"\; filenames="H200610168293XE00022.png,H200610168293XE00043.png"\; state="\{\{state\}\}">dILs</figure-callout>}3}{\mathrm{dt}}-\frac{\mathrm{AL}\&times;\mathrm{Nb}\&times;\mathrm{Na}\&times;\mathrm{<figure-callout\; id="2"\; label="dILs"\; filenames="H200610168293XE00061.png"\; state="\{\{state\}\}">dILs</figure-callout>}2}{\mathrm{dt}}$

$\mathrm{<figure-callout\; id="2"\; label="Vo"\; filenames="H200610168293XE00061.png"\; state="\{\{state\}\}">Vo</figure-callout>}2=(\mathrm{ULs}2-\mathrm{VL}1a-\mathrm{VD}2)(1-D)$

$=(\mathrm{ULs}2-\mathrm{AL}\&times;{\mathrm{<figure-callout\; id="2"\; label="Na"\; filenames="H200610168293XE00061.png"\; state="\{\{state\}\}">Na</figure-callout>}}^2\frac{\mathrm{<figure-callout\; id="2"\; label="dILs"\; filenames="H200610168293XE00061.png"\; state="\{\{state\}\}">dILs</figure-callout>}2}{\mathrm{dt}}+\mathrm{AL}\&times;\mathrm{Na}\&times;\mathrm{Nb}\&times;\frac{\mathrm{<figure-callout\; id="3"\; label="dILs"\; filenames="H200610168293XE00022.png,H200610168293XE00043.png"\; state="\{\{state\}\}">dILs</figure-callout>}3}{\mathrm{dt}}-\mathrm{VD}2)(1-D)$

$\&ap;(\mathrm{ULs}2-\mathrm{VD}2)(1-D)+\mathrm{AL}\&times;\mathrm{Na}(\mathrm{Nb}\&times;\mathrm{ILs}3-\mathrm{Na}\&times;\mathrm{ILs}2)$

$\mathrm{<figure-callout\; id="3"\; label="Vo"\; filenames="H200610168293XE00022.png,H200610168293XE00043.png"\; state="\{\{state\}\}">Vo</figure-callout>}3=(\mathrm{ULs}3-\mathrm{VL}1b-\mathrm{VD}3)(1-D)$

$=(\mathrm{ULs}3-\mathrm{AL}\&times;{\mathrm{<figure-callout\; id="2"\; label="Nb"\; filenames="H200610168293XE00061.png"\; state="\{\{state\}\}">Nb</figure-callout>}}^2\frac{\mathrm{<figure-callout\; id="3"\; label="dILs"\; filenames="H200610168293XE00022.png,H200610168293XE00043.png"\; state="\{\{state\}\}">dILs</figure-callout>}3}{\mathrm{dt}}+\mathrm{AL}\&times;\mathrm{Na}\&times;\mathrm{Nb}\&times;\frac{\mathrm{<figure-callout\; id="2"\; label="dILs"\; filenames="H200610168293XE00061.png"\; state="\{\{state\}\}">dILs</figure-callout>}2}{\mathrm{dt}}-\mathrm{VD}3)(1-D)$

$\&ap;(\mathrm{ULs}3-\mathrm{VD}3)(1-D)+\mathrm{AL}\&times;\mathrm{Na}(\mathrm{Na}\&times;\mathrm{\&Delta;ILs}2-\mathrm{Nb}\&times;\mathrm{\&Delta;ILs}3)$

From top formula, as can be known, for exporting in the Vo2 road, compare with coilloading pressure regulation not, when (Nb* Δ ILs3-Na* Δ ILs2) for timing is

The time, the output of Vo2 road is compensated, and Vo2 road output voltage raises, and rise is AL*Na* (Nb* Δ Ils3-Na* Δ Ils2); The output of Vo3 road affords redress, and Vo3 road output voltage reduces, and the reduction amount is AL*Nb* (Na* Δ Ils2-Nb* Δ Ils3).

Promptly when the ratio of the number of turn of the umber of turn of the higher output inductance L that the road connects 1 of voltage and the winding of this road winding current sum of products voltage output inductance L that the road connects 1 on the low side and this road winding current product greater than 1 the time, the compensation that output road output that voltage is on the low side obtains, ratio is many more above 1, and compensating action is big more; Otherwise it is just few more.Compensation rate is also relevant with the inductance coefficent and the umber of turn of connecing inductance L 1, and just the ratio of each umber of turn of the series inductance L1 of institute satisfies with the ratio of each each winding current variable quantity of road output transformer

Promptly press

Formula designs inductance L 1 just can reach corresponding pressure regulation purpose.

In addition, from following formula as can be known, the size of compensation rate and independent of duty cycle, therefore this directed voltage-regulating technique can be bigger to the amplitude of accommodation of voltage, can not cause compensation rate limited because of the influenced adjusting dutycycle of main road.Because pressure regulation amount and independent of duty cycle, this voltage-regulating technique is minimum to other bypass output and main road output influence.

The voltage compensating principle that the present invention proposes is different with the principle of transformer, transformer has only a winding that drive source is arranged, we are referred to as former limit winding, the energy of former limit winding is magnetic energy by the magnetic core storage, and other winding is converted to electric energy with former limit in the energy coupling of magnetic core storage by being coupled with magnetic core, obtain corresponding coupled voltages or electric current, the magnetic flux that former limit produces in magnetic core is transferred to the secondary winding, and with the output of electric field form, the secondary winding is passive coupling.And this voltage-regulating technique that the present invention adopts, all windings all have the drive source of oneself, the branch that does not have former limit secondary, the magnetic flux that each winding produces in magnetic core can be offset fully, magnetic core is power storage not, and each winding both can have the drive source of oneself, and the coupled source that comes from other winding coupled is also arranged, produce voltage regulation result by drive source and coupled source combined action, this principle with transformer is that essential difference is arranged.

In state of the art, the transformer major function is a transmission of power in addition, descends when coilloading before power transformer secondary rectifying and wave-filtering can cause output voltage, reduces the efficient of transformer transmission of power; Owing to the consistance owing to the magnetic core characteristic under the normal condition is controlled than difficult when manufacturing, cause the consistance of leakage inductance relatively poor simultaneously, this just makes the output voltage consistance bad.Inverse-excitation type topology particularly, the output winding is less because of magnetic core of transformer has added the air gap inductance value, coilloading is equivalent to increase indirectly the leakage inductance of secondary winding before rectifying and wave-filtering, when the leakage inductance amount is big, can make the output voltage instability, so the leakage inductance amount of the control transformer of when ordinary production is made, all can trying one's best, to prevent influence output.And the present invention utilizes the influence of leakage inductance to output just, utilize the principle of induction of mutual inductor simultaneously, information between one output winding is delivered to another winding, it is influenced each other, by the turn ratio between the control mutual inductor, make each output influenced in favourable part be exaggerated utilization, disadvantageous part is offset or is weakened, and becomes unfavorable into favourable.

The principle of the technology of the present invention utilization be each winding of mutual inductor when all driving source being arranged the voltage on the winding remove have with self driving source size outside the Pass, also relevant with the coupling electromotive force of driving source on this winding on other winding, the coupling electromotive force removes relevant with its driving source size, also with winding between the turn ratio relevant, the present invention reaches the purpose of directed pressure regulation by the control turn ratio.When the energy of required transmission hour, the mutual inductor that present embodiment adopts or the magnetic core of transformer are small-sized, the required number of turn is also few, realize that required cost of present embodiment and size are all little, but range of adjustment is bigger, can adjust the turn ratio according to demand and satisfy.

In the regulating circuit that present embodiment provides, output bypass Vo2, the Vo3 of multiple-output electric power can comprise filter capacitor C2 and filter capacitor C3 respectively, the two ends of filter capacitor C2 and filter capacitor C3 connect respectively between the two poles of the earth of exporting bypass, and the winding L 1a of inductance L 1 and winding L 1b are connected to before filter capacitor C2 and the filter capacitor C3.

Present embodiment can comprise commutation diode D2 and commutation diode D3, and commutation diode D2 and commutation diode D3 are serially connected on the output bypass.At different concrete conditions, the regulating circuit circuit that present embodiment provides can carry out various deformation, produces the various deformation circuit.Fig. 4,5,6 illustrate respectively second and third, the circuit diagram of four embodiment, the distortion circuit arrangement of first embodiment is shown respectively, second and third, the difference between four embodiment mainly is the position difference of inductance L I, commutation diode D2 and/or commutation diode D3 series connection, its principle is the same with equivalent electrical circuit, all can realize the lifting/voltage reducing pressure regulation.According to actual conditions, can not use filter capacitor and/or commutation diode.

The pressure regulation scheme that above-mentioned first, second, third and fourth embodiment proposes can be used for three tunnel outputs or the more pressure regulation between multichannel output simultaneously.

Above-mentioned first, second, third and fourth embodiment all realizes the lifting/voltage reducing pressure regulation, and for there being all higher output road of two-way output, the present invention proposes the 5th embodiment to realize the multichannel step-down.

As shown in Figure 7, other condition hypothesis of the 5th embodiment is identical with first embodiment, and difference is the change of inductance L I end of the same name.After the change of inductance end of the same name, the output voltage of Vo2, Vo3 two-way is respectively:

Vo2＝(ULs2-VL1a-VD2)(1-D)

≈(ULs2-VD2)(1-D)-AL×Na(Nb×ΔILs3+Na×ΔILs2)

Vo3＝(ULs3-VL1b-VD3)(1-D)

≈(ULs3-VD3)(1-D)-AL×Nb(Na×ΔILs2+Nb×ΔILs3)

In conjunction with Fig. 8-1 and Fig. 8-2 by top formula as can be known, the output voltage of Vo2, Vo3 two-way has all reduced, and decrease is respectively:

The output of Vo2 road reduces: AL*Na* (Nb* Δ Ils3+Na* Δ Ils2)

The output of Vo3 road reduces: AL*Nb* (Na* Δ Ils2+Nb* Δ Ils3)

The pressure regulation scheme that present embodiment proposes can be used for three tunnel outputs or the more pressure regulation between multichannel output simultaneously.

With first embodiment similarly, also can be out of shape the 5th embodiment, produce the various deformation circuit embodiments, principle and specific embodiment are not just listed here one by one.

Be practical requirement, two kinds of pressure regulation schemes among aforementioned first to the 5th embodiment can be used in combination, (the three tunnel even more between multichannel) both can realize mutual step-down, boost mutually between a plurality of bypasses output to a multiple-output electric power, also can realize the lifting/voltage reducing pressure regulation.

With reference to Fig. 9, propose sixth embodiment of the invention, be used for more than three the road or three the tunnel) pressure regulation mutually between output, export the existing application circuit that boosts and step-down is arranged between three road bypasses at inverse-excitation type four tunnel.VinDC is added on the elementary winding L p of transformer T1, first secondary winding of transformer T1, second subprime winding, level winding and the 4th secondary winding are exported multiple power supplies such as Vo1, Vo2, Vo3, Vo4 respectively for the third time, and wherein bypass Vo2, Vo3, Vo4 need adjust voltage.Wherein Vo1 road input load R1 behind commutation diode D1 and filter capacitor C1 also comprises the feedback sample circuit.One utmost point of the second subprime winding of bypass Vo2 correspondence is connected with the utmost point of inductance L 1 first winding L 1a, and another utmost point is connected with the end of filter capacitor C2; Another utmost point of inductance L 1 first winding L 1a is connected with the anode of commutation diode D2; The negative electrode of commutation diode D2 is connected with the other end of filter capacitor C2, and the flow direction of the first winding L 1a is clockwise.And on bypass Vo3, a utmost point of level winding is connected with the utmost point of inductance L 1 second winding L 1b for the third time, another utmost point of the second winding L 1b is connected with the anode of commutation diode D3, filter capacitor C3 is connected with negative electrode with commutation diode D3 with another utmost point of level winding for the third time respectively, and the flow direction of the second winding L 1b is identical with the flow direction of the first winding L 1a; On bypass Vo4, one utmost point of the 4th secondary winding is connected with the utmost point of inductance L 1 tertiary winding L1c, another utmost point of tertiary winding L1c is connected with the anode of commutation diode D4, filter capacitor C4 is connected with negative electrode with commutation diode D4 with another utmost point of the 4th secondary winding respectively, and the flow direction of tertiary winding L1c is opposite with the flow direction of the first winding L 1a.

Concrete voltage regulation result for the 6th embodiment circuit can calculate with reference to the computing method among the first and the 5th embodiment, specifically be which road or which two output voltage rise, which road or which two output voltage descend or which road output voltage does not rise and do not fall (can allow certain road output voltage participate in pressure regulation but remain unchanged after the comprehensive pressure regulation of its self output voltage), export the last resultant effect of mutual pressure regulation according to three the tunnel and carry out calculation Design.

Above-mentioned various pressure regulation embodiment is for having serially added inductance in the output loop, and is favourable to the electromagnetic compatibility of output.Above-mentioned various pressure regulation embodiment can be applied to comprise in the multiple-output electric power of multiple topology form of inverse-excitation type, in the various topology that can be applicable to multiple-output electric power such as buck (BUCK), boost type (BOOST), step-down/up type, inverse-excitation type, positive activation type, semibridge system, full-bridge type, push-pull type, corresponding distortion circuit and inverse-excitation type are similar, and we do not list one by one.

Above-mentioned various pressure regulation embodiment can select filter capacitor and/or commutation diode for use according to actual conditions, also can not use filter capacitor and/or commutation diode, commutation diode can be arranged in before the winding of mutual inductor flexibly, afterwards or another of output circuit extremely go up; Filter capacitor should be arranged in after the winding of mutual inductor.

According to the actual requirements, the present invention proposes the 7th embodiment and realizes that multichannel pressure regulation more than three tunnel, this embodiment both can realize that lifting/voltage reducing also can realize step-down.The present embodiment circuit diagram as shown in figure 10, circuit theory and the 6th embodiment are similar, repeat no more.The diode that uses among the invention described above first to the 7th embodiment all is output commutation diodes.

The present invention also provides the technology of the present invention is applied in embodiment in the physical circuit.As Figure 11 the 8th embodiment being shown, is the application topo graph that the technology of the present invention is applied in mutual pressure regulation between the output of positive activation type topology multichannel.Wherein diode D1, diode D3, diode D5n, diode D3m are commutation diodes, and diode D2, diode D4, diode D6n, diode D4m are each corresponding windings fly-wheel diodes of secondary, and diode D5 is former limit demagnetization winding counnter attack diode.

The present invention also provides the 9th embodiment, as shown in figure 12, be the application topo graph that the technology of the present invention is applied in the lift pressure regulation between bridge-type topology two-way bypass, diode D1 wherein, diode D2, diode D3, diode D4, diode Dm, diode Dn are commutation diode.

Circuit topography figure that the distortion circuit of above-mentioned the 8th, the 9th embodiment and other are used directed pressure regulation method provided by the invention and distortion circuit thereof are not just listed one by one, transformer Lo winding end of the same name wherein, the former secondary current direction of inverse-excitation type topology is opposite with former secondary winding end of the same name, positive activation type is identical, bridge-type commutates because of transformer Lo primary current, and secondary every road output has two windings to just commutating at primary current.

With the use that combines of above-mentioned two kinds of pressure regulation schemes, to the method that (three tunnel even more between multichannel) between the output of a plurality of bypasses carry out pressure regulation, its range of application comprises multichannel to be exported the on the low side or multichannel of higher one tunnel output to export one tunnel output on the low side higher or multichannel output is on the low side has multichannel to export higher situation simultaneously.And be in conjunction with the circuit design principle of pressure regulation method: for voltage output road on the low side utilize institute's series inductance winding end of the same name identical with it subtract the opposite principle that adds, recently make the amount that adds greater than the amount that subtracts by control institute each winding turns of series inductance, reach the purpose that output voltage rises.For the higher output road of voltage utilize institute's series inductance winding end of the same name identical with it subtract the opposite principle that adds, recently make the amount that subtracts greater than the amount that adds by control institute each winding turns of series inductance, reach the purpose that output voltage descends.

The present invention not only is confined to the output voltage of power supply is regulated, and utilizes the present invention also can regulate the output signal of multiple pulse signal source, makes the multichannel output signal strengthen, weaken or constant

The used mutual inductor of the present invention can be inductor or transformer or other magnetic coupling device, and mutual inductor also can be other magnetic coupling device or other signal coupler spare, as piezoelectric ceramic transformer etc.

The above only is the preferred embodiments of the present invention; be not so limit claim of the present invention; every equivalent structure or equivalent circuit transformation that utilizes instructions of the present invention and accompanying drawing content to be done; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present invention.

Claims (8)

1. directional regulation circuit, be used for the output of the two-way at least bypass signal of signal source is regulated, it is characterized in that, described directional regulation circuit comprises a mutual inductor, described mutual inductor comprises at least two group windings, carry out first winding that one of Signal Regulation is exported the described mutual inductor of polyphone on the bypass at described needs, described needs carry out Signal Regulation at least another output bypass on the polyphone described mutual inductor another winding at least, wherein, described first winding and described another winding have drive source separately, first winding of described mutual inductor and at least the signal flow of end of the same name and the described two-way at least output bypass of another winding to opposite, make described first winding and the flow direction that produces of another winding is opposite at least in mutual inductor, the described output energy of another output bypass at least of the output energy compensating of a described output bypass, make the signal weakening of described one tunnel output bypass, the described signal of another output bypass at least strengthens; Come the conditioning signal regulated quantity by the turn ratio between at least two group windings that change described mutual inductor.

2. directional regulation circuit, be used for the output of the two-way at least bypass signal of signal source is regulated, it is characterized in that, described directional regulation circuit comprises a mutual inductor, described mutual inductor comprises at least two group windings, carry out first winding that one of Signal Regulation is exported the described mutual inductor of polyphone on the bypass at described needs, described needs carry out Signal Regulation at least another output bypass on the polyphone described mutual inductor another winding at least, wherein, described first winding and described another winding have drive source separately, the signal flow of the end of the same name of first winding of described mutual inductor and another winding at least and the described output of two-way at least bypass is to identical, the flow direction that described first winding and another winding are at least produced in mutual inductor is identical, and the described output of two-way at least bypass output signal all weakens; Come the conditioning signal regulated quantity by the turn ratio between at least two group windings that change described mutual inductor.

3. directional regulation circuit, be used for the output of the two-way at least bypass signal of signal source is regulated, it is characterized in that, described directional regulation circuit comprises a mutual inductor, described mutual inductor comprises at least two group windings, carry out first winding that one of Signal Regulation is exported the described mutual inductor of polyphone on the bypass at described needs, described needs carry out Signal Regulation at least another output bypass on the polyphone described mutual inductor another winding at least, wherein, described first winding and described another winding have drive source separately, described mutual inductor comprises at least three group windings, the end of the same name of described three groups of windings is opposite to the part same section with the signal flow of at least three tunnel output bypasses, and described at least three tunnel output bypass output signals are strengthened respectively, weaken or constant; Come the conditioning signal regulated quantity by the turn ratio between at least two group windings that change described mutual inductor.

4. according to the described a kind of directional regulation circuit of arbitrary claim in the claim 1 to 3, it is characterized in that described signal source comprises power supply, pulse signal source or other signal sources.

5. a kind of directional regulation circuit according to claim 4, it is characterized in that, described directional regulation circuit comprises filter capacitor, at least one signal output part of described signal source is connected with an end of described filter capacitor after being connected in series at least one winding of described mutual inductor, and the other end of described filter capacitor is connected with another utmost point of described at least one signal output part.

6. a kind of directional regulation circuit according to claim 5, it is characterized in that, also comprise at least one commutation diode, described commutation diode is serially connected in described needs to carry out between the end of at least one signal output part of Signal Regulation and at least one winding of described mutual inductor, or be serially connected between described at least one signal output part and the described filter capacitor, or be serially connected between the end and described filter capacitor of at least one winding of mutual inductor.

7. according to the described a kind of directional regulation circuit of arbitrary claim in the claim 1 to 3, it is characterized in that described mutual inductor is inductor, transformer, other magnetic coupling device or other signal coupler spare.

8. according to the described a kind of directional regulation circuit of arbitrary claim in the claim 1 to 3, it is characterized in that described directional regulation circuit is applied to comprise in the multiple signal source topology of buck, boost type, step-down/up type, inverse-excitation type, positive activation type, semibridge system, full-bridge type, push-pull type.

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