CN101388607A - Magnetic integration circuit for multiphase staggering flyback converter and controlling method thereof - Google Patents
Magnetic integration circuit for multiphase staggering flyback converter and controlling method thereof Download PDFInfo
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- CN101388607A CN101388607A CNA2007101453742A CN200710145374A CN101388607A CN 101388607 A CN101388607 A CN 101388607A CN A2007101453742 A CNA2007101453742 A CN A2007101453742A CN 200710145374 A CN200710145374 A CN 200710145374A CN 101388607 A CN101388607 A CN 101388607A
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Abstract
The invention discloses a magnetic integrating circuit of a poly-phase alternating expression returning convertor and a method for controlling the convertor. The convertor comprises a transformer, a first primary side coil with a first end, a first secondary side coil with the first end, a second primary side coil with the first end and a second end and a second secondary side coil with the first end and the second end, wherein the first end of the first primary side coil has same polarity with the first end of the first secondary side coil, the second end of the second primary side coil and the second end of the second secondary side coil respectively, chain waves of channel current of the convertor are eliminated, the magnetic integrating circuit also comprises an output capacitance with the first end and the second end, wherein the first end is earthed, and the second end is coupled with the second end of the first secondary side coil and the second end of the second secondary side coil. The magnetic integrating circuit exerts original effects of the alternating expression returning convertor, which enables the convertor to be applied in occasions with higher power, and the circuit has the advantages that not only the loss of diffusion magnetic flux is reduced and the utilization factor of iron is improved, but also the parallel connection of original multiple channels is reserved.
Description
Technical field
The present invention is the control method of magnetic integration circuit (Magnetic Integrated Circuit) and a kind of multiphase staggering flyback converter (Multiphase Interleaved Flyback Converter) of a kind of two-phase staggering flyback converter (Two-phase Interleaved FlybackConverter).Refer in particular to a kind of multiphase staggering flyback converter that comprises the transformer of a plurality of first siding rings and a plurality of second siding rings that has.
Background technology
Flyback converter (Flyback Converter) has low cost and other advantages simple in structure, has obtained using widely on such as adapter devices such as (adapter).Shown in Fig. 1 (a), it is the circuit diagram that shows a flyback converter in the known technology, and it comprises a transformer T, a switch SW, a diode D and an output capacitance C, is used to receive a direct current input voltage vin and an output voltage V out.And Fig. 1 (b) shows in the known technology that one has the circuit diagram of the flyback converter of an iron core (magnetic core:mc), wherein should iron core mc tool one air gap g, and this transformer T has one test coil Np and a secondary test coil Ns.Its operation principles is: when the SW conducting, Np flows through electric current, and D ends, and energy is stored in the transformer; When the SW shutoff, the D conducting, energy is discharged into output.It is relatively poor that but aforementioned flyback converter exists the power transfer ability, and input and output chain ripple (ripple) is bigger, and utilance unshakable in one's determination is low, and therefore the big shortcomings such as (particularly the loss of transformer air gap dispersing flux are big) of coil loss is being used less than large-power occasions.Flyback converter can be considered the simplest magnetic integration circuit/magnetic integration structure of isolating converter.But along with improving constantly of power output and power density, flyback converter can not adapt to the demand of power supply development.
Therefore have lower input and discharging chain ripple, and raising power transfer ability just is suggested then and uses with the staggering flyback converter (interleaved flyback converter) that strengthens advantages such as power output.As shown in Fig. 2 (a), it is circuit diagram for a staggering flyback converter in the known technology, it comprises: one first transformer T1 (first end of its first winding Np1 is identical with the polarity of first end of the second winding Ns1), one second transformer T2 (first end of its first winding Np2 is also identical with the polarity of first end of the second winding Ns2), one first switch SW 1, one second switch SW2, one first diode D1, one second a diode D2 and an output capacitance C, this transducer is used to receive a direct current input voltage vin and produces an output voltage V out, the first test coil Np1 and first secondary test coil Ns1 wherein having shown this transformer T1, the second test coil Np2 and the second secondary test coil Ns2 of this transformer T2.In as Fig. 2 (b), it is to be a circuit diagram with staggering flyback converter of two iron cores (mc1 and mc2) in the known technology, wherein is1 is the electric current of this first secondary test coil Ns1 that flows through, is2 is the electric current of this second secondary test coil Ns2 that flows through, ip1 is the electric current of this first test coil Np1 of flowing through, and ip2 is the electric current of this second test coil Np2 of flowing through, this first switch SW, 1 tool one cross-pressure Vg1, and this second switch SW2 tool one cross-pressure Vg2, all the other then with Fig. 2 (a) in identical.Please referring to as shown in Figure 3, it is the sequential chart that shows the output current (iout) of the electric current (is1 and is2) of the voltage (Vg1 and Vg2) of crossing over first and second switch (SW1 and SW2) of this staggering flyback converter in the known technology, the electric current (ip1 and ip2) of each first siding ring of flowing through (Np1 and Np2), each second siding ring of flowing through (Ns1 and Ns2) and this transducer.
But above-mentioned staggering flyback converter, the electric current chain ripple on its each passage does not improve, and this efficient that will become power supply improves the significant obstacle that reduces with volume.Along with the density of every electronic installation in today integrated circuit raises day by day, and the transition trend that its operation voltage also reduces day by day, be necessary in fact to study the electric current chain ripple on each passage how again row reduce aforementioned staggering flyback converter, with its function of further enhancing; For the underloading loss that improves such as electronic installations such as adapters, also be that the present invention is urgently in one of problem that solves simultaneously.
Summary of the invention
Main purpose of the present invention is to provide a kind of multiphase staggering flyback converter and control method thereof, with the original effect of further performance staggering flyback converter, and improve the power occasion of its application, can reduce the dispersing flux loss widely and improve utilance unshakable in one's determination, and preserve the advantage of the original multichannel parallel connection of staggering flyback converter.
Another main purpose of the present invention is to provide a kind of two-phase staggering flyback converter, comprise a transformer, comprise one first first siding ring, have one first end and one second end, and this first termination is received a direct current input voltage, one first second siding ring, have one first end and one second end, one second first siding ring, have one first end and one second end, and this first termination is received this DC input voitage, one second second siding ring, have one first end and one second end, an and magnetic-coupled core device, this first first siding ring wherein, this first second siding ring, this second first siding ring and this second second siding ring are wound in this magnetic-coupled core device, and first end of this first first siding ring respectively with first end of this first second siding ring, polarity is identical between second end of this second first siding ring and second end of this second second siding ring, chain ripple with a channel current of eliminating this transducer, an and output capacitance, have one first end and one second end, be used to export an output voltage, wherein this first end ground connection, and this second end is coupled in second end of this first second siding ring and second end of this second second siding ring.
According to above-mentioned conception, this transducer more comprises one first and one second flyback converter main circuit, wherein this first flyback converter main circuit comprises this first first siding ring, this first second siding ring, one has first switch of one first end and one second end and first diode of a tool one anode and a negative electrode, this second flyback converter main circuit comprises this second first siding ring, this second second siding ring, one has the second switch of one first end and one second end and second diode of a tool one anode and a negative electrode, second end of this first first siding ring is coupled in first end of this first switch, the second end ground connection of this first switch, first end of this second first siding ring is coupled in first end of this first first siding ring, and second end of this second first siding ring is coupled in first end of this second switch, the second end ground connection of this second switch, first end of this first second siding ring is coupled in the negative electrode of this first diode, the anode of this first diode is coupled in first end of this output capacitance, second end of this first second siding ring is coupled in second end of this output capacitance, first end of this second second siding ring is coupled in the negative electrode of this second diode, the anode of this second diode is coupled in first end of this output capacitance, and second end of this second second siding ring is coupled in second end of this output capacitance.
According to above-mentioned conception, the phase difference of one 180 ° of tools between a controlling signal of this first switch and the controlling signal of this second switch.
According to above-mentioned conception, this magnetic-coupled core device comprises an iron core (magnetic core) with one first and one second core limb (leg), wherein this first core limb is coupled in this first first siding ring and this first second siding ring, this first with each tool one air gap of this second core limb, and this second core limb is coupled in this second first siding ring and this second second siding ring.
According to above-mentioned conception, this magnetic-coupled core device comprises an iron core with one first to 1 the 3rd core limb, wherein this first core limb is coupled in this first first siding ring and this first second siding ring, this first to the 3rd core limb respectively has an air gap, and the 3rd core limb is coupled in this second first siding ring and this second second siding ring.
According to above-mentioned conception, this magnetic-coupled core device comprises one and has one first iron core to a four-limbed post, wherein this second core limb is coupled in this first first siding ring and this first second siding ring, the 3rd core limb is coupled in this second first siding ring and this second second siding ring, and this first with this four-limbed post have one first and one interstice respectively, be used to store the energy of transformer transmission.
According to above-mentioned conception, this magnetic-coupled core device comprises one first to 1 the 3rd iron core, wherein each should iron core tool one first and one second core limb, second core limb of this first iron core and first core limb of this second iron core are coupled in this first first siding ring and this first second siding ring, this second core limb of this second iron core and first core limb of the 3rd iron core are coupled in this second first siding ring and this second second siding ring, and second core limb of first core limb of this first iron core and the 3rd iron core respectively has an air gap.
According to above-mentioned conception, this magnetic-coupled core device comprises one first to 1 the 3rd iron core, wherein each this iron core has one first and one second core limb, second core limb of this first iron core and first core limb of this second iron core are coupled in this first first siding ring and this first second siding ring, second core limb of this second iron core and first core limb of the 3rd iron core are coupled in this second first siding ring and this second second siding ring, and first core limb of second core limb of this first iron core and the 3rd iron core respectively has an air gap.
A main purpose more of the present invention is to provide a kind of control method of multiphase staggering flyback converter, wherein this transducer comprises a transformer, it comprises a plurality of first siding rings with one first end and one second end, a plurality of second siding ring and a plurality of flyback converter main circuits with one first end and one second end, wherein each this flyback converter main circuit comprises this first siding ring, this second siding ring, one switch and at least one iron core with at least two core limbs, comprise: make first this flyback converter main circuit this first siding ring this first end respectively with this first end of this second siding ring of this first main circuit and identical with this second end polarity of this second end of this first siding ring of remaining each this flyback converter main circuit and this second siding ring, with a chain ripple of a channel current of eliminating this transducer.
Next main purpose of the present invention is to provide a kind of two-phase staggering flyback converter (Two-Phase Interleaved Flyback Converter), comprise an iron core, comprise one first core limb and one second core limb, one first flyback converter, comprise one lateral coils and a second siding ring, this primary side and this two things lateral coil are wound on this first core limb; And one second flyback converter, comprise one lateral coils and a second siding ring, this primary side and this second siding ring are wound on this second core limb, when wherein this first siding ring electric current of first flyback converter increases, and this second siding ring output current of this second flyback converter.
According to above-mentioned conception, each this first and this second flyback converter further comprise a power switch, be connected between a direct current power supply and its first siding ring rectifying output circuit, and an output capacitance, be connected between its second siding ring and this rectifying output circuit.
The present invention is with the original effect of further performance staggering flyback converter, make it can be applicable to the occasion of tool higher-wattage, except that reducing the dispersing flux loss widely and improve the utilance unshakable in one's determination, and preserved the advantage of the original multichannel parallel connection of staggering flyback converter.
For the present invention's above-mentioned purpose, feature and advantage can be become apparent, preferred embodiment cited below particularly, and cooperate appended graphicly, be described in detail below:
Description of drawings
Fig. 1 (a) is the circuit diagram that shows flyback converter in the known technology;
Fig. 1 (b) is the circuit diagram that shows the flyback converter of tool one iron core in the known technology;
Fig. 2 (a) is the circuit diagram that shows staggering flyback converter in the known technology;
Fig. 2 (b) shows the circuit diagram that has the staggering flyback converter of two iron cores in the known technology;
Fig. 3 is the sequential chart that shows just like the output current of the electric current of the voltage of crossing over each switch in this staggering flyback converter shown in Fig. 2 (b), flow through respectively this first siding ring and second siding ring and this transducer;
Fig. 4 (a) is the circuit diagram of demonstration one according to the two-phase staggering flyback converter of first preferred embodiment of the present invention's conception;
Fig. 4 (b) is the circuit diagram of demonstration one according to the two-phase staggering flyback converter of first preferred embodiment of the present invention's conception;
Fig. 5 (a) is the circuit diagram of demonstration one according to the operating mode one of the two-phase staggering flyback converter of first preferred embodiment of the present invention's conception;
Fig. 5 (b) is the circuit diagram of demonstration one according to the operating mode two of the two-phase staggering flyback converter of first preferred embodiment of the present invention's conception;
Fig. 5 (c) is the circuit diagram of demonstration one according to the operating mode three of the two-phase staggering flyback converter of first preferred embodiment of the present invention's conception;
Fig. 5 (d) is the circuit diagram of demonstration one according to the operating mode four of the two-phase staggering flyback converter of first preferred embodiment of the present invention's conception;
Fig. 6 is voltage, flow through respectively this primary side and the electric current of second siding ring and the sequential chart of this converter output current of demonstration one according to each switch of two-phase staggering flyback converter of first preferred embodiment of the present invention's conception;
Fig. 7 is the circuit diagram of demonstration one according to the two-phase staggering flyback converter of second preferred embodiment of the present invention's conception;
Fig. 8 (a) is the circuit diagram of demonstration one according to the operating mode one of the two-phase staggering flyback converter of second preferred embodiment of the present invention's conception;
Fig. 8 (b) is the circuit diagram of demonstration one according to the operating mode two of the two-phase staggering flyback converter of second preferred embodiment of the present invention's conception;
Fig. 8 (c) is the circuit diagram of demonstration one according to the operating mode three of the two-phase staggering flyback converter of second preferred embodiment of the present invention's conception;
Fig. 8 (d) is the circuit diagram of demonstration one according to the operating mode four of the two-phase staggering flyback converter of second preferred embodiment of the present invention's conception;
Fig. 9 be show voltage just like this first switch of this two-phase staggering flyback converter shown in Fig. 2 (b), this first with the electric current of this second switch and and this first with the sequential chart of the voltage of this second diode;
Figure 10 be show voltage just like this first switch of this two-phase staggering flyback converter shown in Fig. 4 (b), this first with the electric current of this second switch and and this first with the sequential chart of the voltage of this second diode;
Figure 11 is the circuit diagram of demonstration one according to the two-phase staggering flyback converter of the 3rd preferred embodiment of the present invention's conception;
Figure 12 is the circuit diagram of demonstration one according to four staggered formula flyback converters of the single-core with six core limbs and two air gaps of the 4th preferred embodiment of the present invention's conception;
Figure 13 is the circuit diagram of demonstration one according to the two-phase staggering flyback converter with three iron cores and two air gaps of the 5th preferred embodiment of the present invention's conception;
Figure 14 is the circuit diagram of demonstration one according to the two-phase staggering flyback converter with three iron cores and two air gaps of the preferred embodiment 6 of the present invention's conception;
Figure 15 is the circuit diagram of demonstration one according to the four staggered formula flyback converters with five iron cores and two air gaps of the 7th preferred embodiment of the present invention's conception.
Embodiment
Fig. 4 (a) is depicted as a circuit diagram according to the two-phase staggering flyback converter of first preferred embodiment of the present invention conception, it has shown one the first a test coil Np1 and one first a secondary test coil Ns1 of a transformer (not shown), and the polarity of both first ends is identical, one the second a test coil Np2 and one second a secondary test coil Ns2, and the polarity of this Np2 and second end of this Ns2 also all the polarity with first end of this first test coil Np1 is identical, in order to the electric current chain ripple on each passage of eliminating this transducer; It more comprises one first switch SW, 1, one second switch SW2, and one first diode D1, one second a diode D2 and an output capacitance C, this transducer are used to receive a direct current input voltage vin and produce an output voltage V out.
Fig. 4 (b) is the circuit diagram that shows the two-phase staggering flyback converter of first preferred embodiment of conceiving according to the present invention, with the 4th figure (a) different be in, this transducer further contains a mc unshakable in one's determination with one first to 1 the 3rd core limb, wherein this first core limb is coupled in this first first siding ring Np1 and this first second siding ring Ns1, each tool one air gap g1-g3 of this first to the 3rd core limb, and the 3rd core limb is coupled in this second first siding ring Np2 and this second second siding ring Ns2.This area tool general skill person all know: Vout/Vin=D/ (n (1-D)), wherein D be a responsibility than (duty ratio), and n is a turn ratio (turns ratio).Have the staggering flyback converter (shown in Fig. 4 (b)) and the staggering flyback converter (for example shown in Fig. 2 (b)) that does not have the iron core that is coupled as proposed by the present invention of the iron core of coupling as proposed by the present invention, has following relation: ic/inon-c=(0.5-D)/(1-D) between the electric current (ip1 and ip2) of its each first siding ring of flowing through (Np1 and Np2), wherein ic is the electric current with coupling staggering flyback converter unshakable in one's determination, and inon-c is the electric current that does not have coupling staggering flyback converter unshakable in one's determination, and D is a responsibility ratio.
It is the circuit diagram of demonstration one according to the operating mode one of the two-phase staggering flyback converter of first preferred embodiment of the present invention's conception as Fig. 5 (a), SW1 conducting this moment SW2 ends, D1 is by the D2 conducting, and Np1 flows through current i p1, and Ns2 flows through freewheel current is2.The loop conducting of Ns2, D2 and C (having this current i s2), and also conducting of the loop of Np1 and SW1 (have this current i p1, and SW1 having a cross-pressure Vg1).
It is the circuit diagram of demonstration one according to the operating mode two of the two-phase staggering flyback converter of first preferred embodiment of the present invention's conception as Fig. 5 (b), and this moment, SW1 and SW2 ended, and freewheel current is1 and is2 are flow through in D1 and D2 conducting respectively.The loop conducting of Ns1, D1 and C (having this current i s1), and also conducting of the loop of Ns2, D2 and C (having this current i s2).
It is the circuit diagram of demonstration one according to the operating mode three of the two-phase staggering flyback converter of first preferred embodiment of the present invention's conception as Fig. 5 (c), SW2 conducting this moment SW1 ends, D2 is by the D1 conducting, and Np2 flows through current i p2, and Ns1 flows through freewheel current is1.The loop conducting of Ns1, D1 and C (this current i of tool s1), and also conducting of the loop of Np2 and SW2 (this current i of tool p2, and SW2 tool one cross-pressure Vg2).
It is the circuit diagram of demonstration one according to the operating mode four of the two-phase staggering flyback converter of first preferred embodiment of the present invention's conception as Fig. 5 (d), and this moment, SW1 and SW2 ended, and freewheel current is1 and is2 are flow through in D1 and D2 conducting respectively.The loop conducting of Ns1, D1 and C (this current i of tool s1), and also conducting of the loop of Ns2, D2 and C (this current i of tool s2).
As Fig. 6 is to show voltage (Vg1 and Vg2), the electric current (ip1 and ip2) of each first siding ring of flowing through (Np1 and Np2), the electric current (is1 and is2) of each second siding ring of flowing through (Ns1 and Ns2) and the sequential chart of this converter output current (iout) according to each switch (SW1 and SW2) of the two-phase staggering flyback converter (for example the 4th figure (b)) of first preferred embodiment of the present invention's conception, wherein should (1), (2), (3) and (4) each during be corresponding to Fig. 5 (a) to the operating mode one of Fig. 5 (d) to operating mode four.Wherein the dotted portion system in the oscillogram of ip1, is1, ip2 and is2 indicate as the 3rd figure in the corresponding part of ip1, is1, ip2 and is2 of known staggering flyback converter, to do a comparison.During this (1), because the coil coupling, ip1 electric current rising rate of change descends, and then the chain ripple reduces; The is2 electric current rises, this is different from the corresponding part of is2 as shown in Figure 3, because this of this known staggering flyback converter first is not coupled with this second transformer T1 and T2 shown in Fig. 2 (b), so be the situation that electric current descends, during these (2), is1 is identical with the trend of is1 shown in is2 current variation (decline) and the 3rd figure and the corresponding part of is2, during these (3), because respectively this first siding ring of this preferred embodiment and second siding ring coupling, ip2 electric current rising rate of change descends, and then the chain ripple reduces; The is1 electric current rises, and during these (4), the trend of is1 and is2 current variation (decline) and is1 shown in Figure 3 and the corresponding part of is2 is identical.Can find out the cutting edge of a knife or a sword value of ip1, the is1, ip2 and the is2 that conceive according to the present invention among Fig. 6, be low than the ip1 among the 3rd figure, is1, ip2 with the corresponding part of is2 significantly.
As Fig. 7 is the circuit diagram that shows the two-phase staggering flyback converter of second preferred embodiment of conceiving according to the present invention, with the 4th figure (a) different be in, this transducer more comprises a mc unshakable in one's determination with one first and one second core limb, wherein this first core limb is coupled in this first first siding ring Np1 and this first second siding ring Ns1, this first to the 3rd core limb respectively has an air gap g1-g3, and the 3rd core limb is coupled in this second first siding ring Np2 and this second second siding ring Ns2.
It is to show one respectively according to the operating mode one of the two-phase staggering flyback converter of second preferred embodiment of the present invention conception circuit diagram to pattern four as Fig. 8 (a)-(d), its operation principles with Fig. 5 (a)-(d) is identical, both difference only are: second preferred embodiment of the present invention reduces the core limb of central authorities than first preferred embodiment, so the current component of the central core limb of former Fig. 5 (a)-(d) in Fig. 8 (a)-(d), has not just existed naturally.
The electric current of the voltage (Vg1) of first switch (SW1) that has then shown the known two-phase staggering flyback converter shown in second figure (b) among Fig. 9, first and second switch (SW1 and SW2) and ip (=ip1+ip2) and the sequential chart of the voltage (Vds1 and Vds2) of first and second diode (D1 and D2).
As among Figure 10 be the electric current of the voltage (Vg1) that shown first switch (SW1) of the two-phase staggering flyback converter shown in Fig. 4 (b), first and second switch (SW2) and ip (=ip1+ip2) and the sequential chart of the voltage (Vds1 and Vds2) of first and second diode (D1 and D2).
And herein among Figure 10 the electric current of first and second switch (SW1 and SW2) and ip (=ip1+ip2) with Fig. 9 in first and second switch (SW1 and SW2) electric current and ip (=ip1+ip2) comparison, (the chain ripple current peak of ip curve is about 2.5div in Figure 10 then can to use aforesaid formula: ic/inon-c=(0.5-D)/(1-D)=(0.5-0.36)/(1-0.36)=0.22, and the chain ripple current peak of ip curve is about 11div among Fig. 9), Figure 10 drop to according to the chain ripple current peak of the ip curve of the present invention's first preferred embodiment known as shown in Figure 9 two-phase staggering flyback converter the ip curve chain ripple current peak 1/4, as seen its chain ripple has been eliminated significantly.
As Figure 11 promptly is the circuit diagram of demonstration one according to the two-phase staggering flyback converter of the 3rd preferred embodiment of the present invention's conception.It has a mc unshakable in one's determination who comprises four core limbs, and first and the four-limbed post on one first and one interstice g1 and g2 arranged respectively, its second core limb is coupled in one first first siding ring Np1 and one first second siding ring Ns1, and its 3rd core limb is coupled in one second first siding ring Np2 and one second second siding ring Ns2, and remainder is then identical with first preferred embodiment (seeing Fig. 4 (b)) of the present invention's conception.
According to conception of the present invention, it also can be used in the multiphase staggering flyback converter, for example, in Figure 12, promptly show a circuit diagram according to the 4th preferred embodiment of the present invention conception with six core limbs and four staggered formula flyback converters of the single-core of two air gaps.It has a mc unshakable in one's determination who comprises six core limbs, and one first and one interstice g1 and g2 arranged respectively on its first and the 6th core limb, its second core limb is coupled in one first first siding ring Np1 and one first second siding ring Ns1, its the 3rd core limb is coupled in one second first siding ring Np2 and one second second siding ring Ns2, its four-limbed post is coupled in one the 3rd first siding ring Np3 and one the 3rd second siding ring Ns3, and its 5th core limb is coupled in one the 4th first siding ring Np4 and one the 4th second siding ring Ns4, it also has one first to 1 the 4th switch SW 1～SW4 (electric current of each first siding ring Np1～Np4 that flows through is respectively ip1～ip4) and one first to 1 the 4th diode D1～D4, and (electric current of each second siding ring Ns1～Ns4 that flows through is respectively is1～is4), one first end of this first first siding ring Np1 respectively with one first end of this first second siding ring Ns1 and with one second end of this second first siding ring Np2, one second end of this second second siding ring Ns2, one second end of the 3rd first siding ring Np3, one second end of the 3rd second siding ring Ns3, one second end of the 4th first siding ring Np4 is identical with one of the 4th second siding ring Ns4 second end polarity each other, and remainder is then identical with three preferred embodiments (seeing as Figure 11) of the present invention's conception.
Certainly, according to conception of the present invention, it also can be used in (for example has a plurality of different iron cores, it is unshakable in one's determination or a UU unshakable in one's determination or the iron core of an EE+UU that it can be an EE) the two-phase staggering flyback converter or multiphase staggering flyback converter in, for example, Figure 13 is that demonstration one is according to three iron cores of tool of the 5th preferred embodiment of the present invention's conception and the circuit diagram of the two-phase staggering flyback converter of two air gaps.Wherein one first, one second and one the 3rd mc1 unshakable in one's determination, mc2 and mc3 are a UU iron core with three core limbs, and have an air gap g1 and a g2 respectively on first core limb that should iron core mc1 and second core limb of this iron core mc3, one first first siding ring Np1 and one first second siding ring Ns1 are coupled in second core limb of this first mc1 unshakable in one's determination and first core limb of second mc2 unshakable in one's determination, one second first siding ring Np2 and one second second siding ring Ns2 are coupled in second core limb of this second mc2 unshakable in one's determination and first core limb of the 3rd mc3 unshakable in one's determination, and remainder is then identical with three preferred embodiments (seeing as Figure 11) of the present invention's conception.
It shows one according to three iron cores of tool of the 6th preferred embodiment of the present invention's conception and the circuit diagram of the two-phase staggering flyback converter of two air gaps at Figure 14.Wherein one first, one second and one the 3rd mc1 unshakable in one's determination, mc2 and this iron core mc3 are a UU iron core with three core limbs, and have an air gap g1 and a g2 respectively on second core limb that should iron core mc1 and first core limb of mc3 unshakable in one's determination, one first first siding ring Np1 and one first second siding ring Ns1 are coupled in second core limb of this first mc1 unshakable in one's determination and first core limb of second mc2 unshakable in one's determination, one second first siding ring Np2 and one second second siding ring Ns2 are coupled in second core limb of this second mc2 unshakable in one's determination and first core limb of the 3rd mc3 unshakable in one's determination, and remainder is then identical with three preferred embodiments (seeing as Figure 11) of the present invention's conception.
As Figure 15, it is one according to five iron cores of tool of the 7th preferred embodiment of the present invention conception and the circuit diagram of four staggered formula flyback converters of two air gaps.Wherein one first to 1 the 5th mc1-mc5 unshakable in one's determination is a UU iron core with three core limbs, and has an air gap g1 and a g2 respectively on second core limb of first core limb that should iron core mc1 and this iron core mc5.One first first siding ring Np1 and one first second siding ring Ns1 are coupled in second core limb of this first mc1 unshakable in one's determination and first core limb of this second mc2 unshakable in one's determination, one second first siding ring Np2 and one second second siding ring Ns2 are coupled in second core limb of this second mc2 unshakable in one's determination and first core limb of the 3rd mc3 unshakable in one's determination, one the 3rd first siding ring Np3 and one the 3rd second siding ring Ns3 are coupled in second core limb of the 3rd mc3 unshakable in one's determination and first core limb of this four-limbed mc4, and one the 4th first siding ring Np4 and one the 4th second siding ring Ns4 are coupled in second core limb of this four-limbed mc4 and first core limb of the 5th mc5 unshakable in one's determination, and remainder is then identical with the 4th preferred embodiment (seeing as Figure 12) of the present invention's conception.
And according to conception of the present invention, it also can be used in the multiphase staggering flyback converter with an iron core (comprising a plurality of core limbs) and air gap (also can be a plurality of air gaps).
By above-mentioned explanation as can be known, main purpose of the present invention is to provide a kind of multiphase staggering flyback converter and control method thereof, with the original effect of further performance staggering flyback converter, make it can be applicable to the occasion of tool higher-wattage, except that reducing the dispersing flux loss widely and improve the utilance unshakable in one's determination, and preserved the advantage of the original multichannel parallel connection of staggering flyback converter.
So, can be appointed and execute that the craftsman thinks and be to modify the right neither Protector that scope is desired who takes off as claim as all by being familiar with those skilled in the art even if this case has been described in detail by the above embodiments.
Claims (12)
1. a two-phase staggering flyback converter is characterized in that, comprising:
One transformer comprises:
One first first siding ring have one first end and one second end, and this first termination is received a direct current input voltage;
One first second siding ring has one first end and one second end;
One second first siding ring have one first end and one second end, and this first termination is received this DC input voitage;
One second second siding ring has one first end and one second end; And
One magnetic-coupled core device,
Wherein, this first first siding ring, this first second siding ring, this second first siding ring and this second second siding ring are wound in this magnetic-coupled core device, and first end of this first first siding ring respectively with second end of second end of first end of this first second siding ring, this second first siding ring and this second second siding ring between polarity identical, with a chain ripple of a channel current of eliminating this transducer; And
One output capacitance has one first end and one second end, is used to export an output voltage, and wherein this first end ground connection, and this second end is coupled in second end of this first second siding ring and second end of this second second siding ring.
2. transducer as claimed in claim 1, it is characterized in that, further comprise: one first and one second flyback converter main circuit, wherein, the described first flyback converter main circuit comprises: this first first siding ring, this first second siding ring, one first switch and with one first end and one second end has first diode of an anode and a negative electrode, the described second flyback converter main circuit comprises: this second first siding ring, this second second siding ring, one second switch and with one first end and one second end has second diode of an anode and a negative electrode, second end of this first first siding ring is coupled in first end of this first switch, the second end ground connection of this first switch, first end of this second first siding ring is coupled in first end of this first first siding ring, and second end of this second first siding ring is coupled in first end of this second switch, the second end ground connection of this second switch, first end of this first second siding ring is coupled in the negative electrode of this first diode, the anode of this first diode is coupled in first end of this output capacitance, second end of this first second siding ring is coupled in second end of this output capacitance, first end of this second second siding ring is coupled in the negative electrode of this second diode, the anode of this second diode is coupled in first end of this output capacitance, and second end of this second second siding ring is coupled in second end of this output capacitance.
3. transducer as claimed in claim 2 is characterized in that, has one 180 ° phase difference between a controlling signal of described first switch and the controlling signal of this second switch.
4. transducer as claimed in claim 2, it is characterized in that, described magnetic-coupled core device comprises: one has one first and the iron core of one second core limb, wherein, described first core limb is coupled in this first first siding ring and this first second siding ring, described first and second core limb respectively has an air gap, and this second core limb is coupled in this second first siding ring and this second second siding ring.
5. transducer as claimed in claim 2, it is characterized in that, described magnetic-coupled core device comprises: one has the iron core of one first to 1 the 3rd core limb, wherein, described first core limb is coupled in this first first siding ring and this first second siding ring, this first to the 3rd core limb respectively has an air gap, and the 3rd core limb is coupled in this second first siding ring and this second second siding ring.
6. transducer as claimed in claim 2, it is characterized in that, described magnetic-coupled core device comprises: one has one first iron core to a four-limbed post, wherein, described second core limb is coupled in this first first siding ring and this first second siding ring, the 3rd core limb is coupled in this second first siding ring and this second second siding ring, and this first has one first and one interstice respectively with this four-limbed post, is used to store the energy of transformer transmission.
7. transducer as claimed in claim 2, it is characterized in that, described magnetic-coupled core device comprises: one first to 1 the 3rd iron core, wherein, each should iron core tool one first and one second core limb, second core limb of this first iron core and first core limb of this second iron core are coupled in this first first siding ring and this first second siding ring, second core limb of this second iron core and first core limb of the 3rd iron core are coupled in this second first siding ring and this second second siding ring, and second core limb of first core limb of this first iron core and the 3rd iron core respectively has an air gap.
8. transducer as claimed in claim 2, it is characterized in that, described magnetic-coupled core device comprises: one first to 1 the 3rd iron core, wherein, each should iron core tool one first and one second core limb, second core limb of this first iron core and first core limb of this second iron core are coupled in this first first siding ring and this first second siding ring, second core limb of this second iron core and first core limb of the 3rd iron core are coupled in this second first siding ring and this second second siding ring, and first core limb of second core limb of this first iron core and the 3rd iron core respectively has an air gap.
9. the control method of a multiphase staggering flyback converter, it is characterized in that, described transducer comprises: a transformer, it comprises a plurality of first siding rings with one first end and one second end, a plurality of second siding ring and a plurality of flyback converter main circuits with one first end and one second end, wherein each this flyback converter main circuit comprises: this first siding ring, this second siding ring, one switch and at least one iron core with at least two core limbs, comprise: make described first this flyback converter main circuit first siding ring first end respectively with first end of the second siding ring of this first main circuit and identical with the second end polarity of second end of the first siding ring of remaining each described flyback converter main circuit and this second siding ring, with a chain ripple of a channel current of eliminating this transformer.
10. method as claimed in claim 9 is characterized in that, described transducer is a staggering flyback converter as claimed in claim 2.
11. a two-phase staggering flyback converter is characterized in that, comprising:
An iron core comprises: one first core limb and one second core limb;
One first flyback converter comprises: one lateral coils and a second siding ring, and this primary side and this two things lateral coil are wound on this first core limb; And
One second flyback converter comprises: one lateral coils and a second siding ring, and this primary side and this second siding ring are wound on this second core limb;
Wherein, when the first siding ring electric current of described first flyback converter increases, the second siding ring output current of described second flyback converter.
12. transducer as claimed in claim 11 is characterized in that, each described first and second flyback converter further comprises:
One power switch is connected between a direct current power supply and its first siding ring;
One rectifying output circuit; And
One output capacitance is connected between its second siding ring and this rectifying output circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101453742A CN101388607B (en) | 2007-09-11 | 2007-09-11 | Magnetic integration circuit for multiphase staggering flyback converter and controlling method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101453742A CN101388607B (en) | 2007-09-11 | 2007-09-11 | Magnetic integration circuit for multiphase staggering flyback converter and controlling method thereof |
Publications (2)
| Publication Number | Publication Date |
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| CN101388607A true CN101388607A (en) | 2009-03-18 |
| CN101388607B CN101388607B (en) | 2011-11-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2007101453742A Expired - Fee Related CN101388607B (en) | 2007-09-11 | 2007-09-11 | Magnetic integration circuit for multiphase staggering flyback converter and controlling method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103069702A (en) * | 2010-09-03 | 2013-04-24 | 罗伯特·博世有限公司 | Multiphase converter comprising magnetically coupled phases |
| CN107689734A (en) * | 2016-08-05 | 2018-02-13 | 台达电子企业管理（上海）有限公司 | High-power transformation system |
| CN107786090A (en) * | 2016-08-30 | 2018-03-09 | 雅达电子国际有限公司 | With the multi-phase power supply inverter for Transformer Winding and the integrated core of inductor winding |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5508903A (en) * | 1995-04-21 | 1996-04-16 | Alexndrov; Felix | Interleaved DC to DC flyback converters with reduced current and voltage stresses |
| US6031747A (en) * | 1999-08-02 | 2000-02-29 | Lockheed Martin Missiles & Space Company | Interleaved synchronous flyback converter with high efficiency over a wide operating load range |
-
2007
- 2007-09-11 CN CN2007101453742A patent/CN101388607B/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103069702A (en) * | 2010-09-03 | 2013-04-24 | 罗伯特·博世有限公司 | Multiphase converter comprising magnetically coupled phases |
| CN107689734A (en) * | 2016-08-05 | 2018-02-13 | 台达电子企业管理（上海）有限公司 | High-power transformation system |
| CN107689734B (en) * | 2016-08-05 | 2020-01-31 | 台达电子企业管理（上海）有限公司 | High power conversion system |
| CN107786090A (en) * | 2016-08-30 | 2018-03-09 | 雅达电子国际有限公司 | With the multi-phase power supply inverter for Transformer Winding and the integrated core of inductor winding |
| CN107786090B (en) * | 2016-08-30 | 2022-01-21 | 雅达电子国际有限公司 | Multiphase power converter with integrated magnetic core for transformer and inductor windings |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101388607B (en) | 2011-11-02 |
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