CN108461260B - The matched transformer of secondary windings leakage inductance and multiple-channel output resonant transform circuit - Google Patents
The matched transformer of secondary windings leakage inductance and multiple-channel output resonant transform circuit Download PDFInfo
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- CN108461260B CN108461260B CN201810120348.2A CN201810120348A CN108461260B CN 108461260 B CN108461260 B CN 108461260B CN 201810120348 A CN201810120348 A CN 201810120348A CN 108461260 B CN108461260 B CN 108461260B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/4815—Resonant converters
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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Abstract
The invention discloses a kind of matched transformer of secondary windings leakage inductance and multiple-channel output resonant transform circuits.The transformer includes: bobbin winder bracket；First armature winding；First secondary windings, including first, second, third and fourth sub- winding of grade, the sub- winding of first grade and the sub- winding parallel of second subprime, the third sub- winding of secondary and the 4th sub- winding parallel of grade；First armature winding and the layering of the first secondary windings are wound in bobbin winder bracket；The secondary sub- winding of the sub- winding of first grade and third in first secondary windings is wound in same layer, the sub- winding of second subprime and the 4th sub- winding of grade are wound in another layer, so that the secondary sub- winding of the sub- winding of first grade and third of same layer setting, the sub- winding of second subprime of same layer setting and the 4th sub- winding of grade are symmetrical in structure, so as to improve the coefficient of coup between secondary windings and match the leakage inductance of secondary windings, and then it can be improved the cross regulation rate of multiple-channel output voltage.
Description
Technical field
The present invention relates to electricity fields, humorous more particularly to a kind of matched transformer of secondary windings leakage inductance and multiple-channel output
Shake translation circuit.
Background technique
In current high-power industrial control field, the load of Switching Power Supply is mostly to have the motor of impact characteristics negative
It carries, this requires power supplys to have the precision of voltage regulation high, and dynamic characteristic is good, the characteristics such as fast response time.In addition, most of Industry Controls
It is all that there are many level demands, therefore this requires Industry Control power supply will there are many level to export.In most of multichannel
In output switch power source, primary feedback road is generally possible to meet that the precision of voltage regulation is high, dynamic property is good, and the characteristics such as fast response time are wanted
It asks, and bypass output voltage then changes as the load on primary feedback road changes, and is unable to satisfy required precision.
Fig. 1 is a kind of structural schematic diagram of existing multiple-channel output resonant transform circuit.As shown in Figure 1, multiple-channel output is humorous
Vibration translation circuit 100 is LLC resonant transform circuit comprising LLC module 11, transformer 12 and output module 13.
Transformer 12 includes the first armature winding N11 connecting with LLC module 11 and the second armature winding N12, Yi Jiyu
The first secondary windings N21, second subprime winding N22, third secondary windings N23 and the 4th secondary windings that output module 13 connects
N24。
Output module 13 exports three road voltages, respectively first voltage+U01, second voltage-U01 and tertiary voltage+U02.
Wherein, the circuit where first voltage+U01 is primary feedback road, and second voltage-U01 and the circuit where tertiary voltage+U02 are
Bypass.
It is the schematic diagram of the section structure of transformer in circuit shown in Fig. 1 please also refer to Fig. 2, Fig. 2.As shown in Fig. 2, transformation
Device 12 uses traditional sandwich winding, and specifically, the first armature winding N11 and the second armature winding N12 are wound on respectively
The innermost layer and outermost layer of bobbin winder bracket 121, the first secondary windings N21, second subprime winding N22, third secondary windings N23 and
Four secondary windings N24 points four layers are wound on respectively between the first armature winding N11 and the second armature winding N12.
Existing multiple-channel output resonant transform circuit 100 is due to the secondary windings namely the first secondary windings in transformer 12
N21, second subprime winding N22, third secondary windings N23 and the 4th secondary windings N24 and armature winding namely first it is primary around
The distance of group N11 and the second armature winding N12 and the center magnetic pole (not shown) being set in bobbin winder bracket 121 is inconsistent, causes
Secondary windings namely the first secondary windings N21, second subprime winding N22, third secondary windings N23 and the 4th secondary windings N24
Leakage inductance be converted to also inconsistent after primary side namely leakage inductance and mismatch, and secondary windings namely the first secondary windings N21, second
Coupling performance between grade winding N22, third secondary windings N23 and the 4th secondary windings N24 is poor, to will appear primary feedback electricity
When the load variation of road namely the circuit where first voltage+U01, cause second voltage-U01 and tertiary voltage+U02 that phase occurs
It should change, the precision of voltage regulation and response speed of the two are unable to satisfy application requirement.
To solve the above-mentioned problems, the way of the prior art is that second in multiple-channel output resonant transform circuit 100 is electric
Bypass where pressure-U01 and tertiary voltage U02 increases DC/DC power supply or LDO (as shown in Figure 3), can satisfy obtained from steady
Press the voltage of precision.
But the way of the prior art have the shortcomings that it is as follows:
1, bypass output is needed using DC/DC power supply or LDO, and structure is complicated, and component number increases, and cost increases.
2, second voltage-U01 and tertiary voltage+U02 is needed by multi-stage transformation, and loss increases, and efficiency reduces.
3, when multiplex output circuit is multiple-channel output LLC resonant transform circuit, especially output cross regulation rate difference is complete
Wave rectify LLC resonant transform circuit when, can exist output rectifier diode switching signal positive and negative half period current distribution not
Equalization problem and the big problem of diode reverse recovery due to voltage spikes, so that the current stress of device increases, reliability
It reduces.
Summary of the invention
The invention mainly solves the technical problem of providing a kind of matched transformer of secondary windings leakage inductance and multiple-channel outputs
Resonant transform circuit can be improved the coefficient of coup between secondary windings and match the leakage inductance of secondary windings, and then can mention
The cross regulation rate of high multiple-channel output voltage.
In order to solve the above technical problems, one technical scheme adopted by the invention is that: a kind of secondary windings leakage inductance is provided
The transformer matched, the transformer include: bobbin winder bracket；First armature winding；First secondary windings, including the sub- winding of first grade,
The secondary sub- winding of the sub- winding of second subprime, third and the 4th sub- winding of grade, the sub- winding of first grade and the sub- winding of second subprime
Parallel connection, the third sub- winding of secondary and the 4th sub- winding parallel of grade；Wherein, the first armature winding and the first secondary windings layering around
It is formed on bobbin winder bracket；Wherein, the sub- winding of first grade in the first secondary windings and the secondary sub- winding of third are wound in same layer, the
The sub- winding of secondary stage and the 4th sub- winding of grade are wound in another layer.
In order to solve the above technical problems, another technical solution used in the present invention is: providing a kind of multiple-channel output resonance
Translation circuit includes above-mentioned transformer.
The beneficial effects of the present invention are: being in contrast to the prior art, the matched change of secondary windings leakage inductance of the invention
Depressor and multiple-channel output resonant transform circuit include bobbin winder bracket；First armature winding；First secondary windings, including first grade
The secondary sub- winding of the sub- winding of winding, second subprime, third and the 4th sub- winding of grade, the sub- winding of first grade and second subprime
Winding parallel, the third sub- winding of secondary and the 4th sub- winding parallel of grade；First armature winding and the first secondary windings layering around
It is formed on bobbin winder bracket；The secondary sub- winding of the sub- winding of first grade and third in first secondary windings is wound in same layer, and second
The sub- winding of grade and the 4th sub- winding of grade are wound in another layer.By the above-mentioned means, due to first sub- winding of grade and second
The sub- winding parallel of grade, the secondary sub- winding of third and the 4th sub- winding parallel of grade, so that first sub- winding of grade of same layer setting
It is symmetrical arranged in structure with the secondary sub- winding of third, the sub- winding of second subprime of same layer setting and the 4th sub- winding of grade, from
And it can be improved the coefficient of coup between secondary windings and match the leakage inductance of secondary windings, and then can be improved multiple-channel output electricity
The cross regulation rate of pressure.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of existing multiple-channel output resonant transform circuit；
Fig. 2 is the schematic diagram of the section structure of transformer in circuit shown in Fig. 1；
Fig. 3 is the structural schematic diagram after the improvement of circuit shown in Fig. 1；
Fig. 4 is the circuit diagram of the multiple-channel output resonant transform circuit of first embodiment of the invention；
Fig. 5 is the diagrammatic cross-section of the transformer in circuit shown in Fig. 4；
Fig. 6 is the circuit diagram of the multiple-channel output resonant transform circuit of second embodiment of the invention；
Fig. 7 is the diagrammatic cross-section of the first embodiment of the transformer of circuit shown in Fig. 6；
Fig. 8 is the diagrammatic cross-section of the second embodiment of the transformer of circuit shown in Fig. 6.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that the described embodiments are merely a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 4 is the circuit diagram of the multiple-channel output resonant transform circuit of first embodiment of the invention.As shown in figure 4, more
Road export resonance translation circuit 200 includes LLC module 21, transformer 22, first diode D1, the second diode D2, the three or two
Pole pipe D3, the 4th diode D4, first capacitor C1 and the second capacitor C2.
Transformer 22 includes the first armature winding Np1 and the first secondary windings, wherein the first secondary windings includes for the first time
The sub- winding Ns11 of grade, the sub- winding Ns12 of second subprime, the sub- winding Ns22 of secondary sub- winding Ns21 and the 4th grade of third.Wherein,
The sub- winding Ns11 of first grade and the sub- winding Ns12 of second subprime are in parallel, secondary sub- winding Ns21 and the 4th sub- winding of grade of third
Ns22 is in parallel.
LLC module 21 is connect with the Same Name of Ends of the first armature winding Np1 and different name end respectively；The sub- winding Ns11 of first grade
Same Name of Ends connect with the Same Name of Ends of the sub- winding Ns12 of second subprime after with the anode of first diode D1, third diode D3
Cathode connection；The different name end of the sub- winding Ns11 of first grade, the different name end of the sub- winding Ns12 of second subprime, the secondary sub- winding of third
The Same Name of Ends connection of the Same Name of Ends of Ns21, the 4th sub- winding Ns22 of grade is followed by the first ground wire GND1；The secondary sub- winding of third
The different name end of Ns21, the 4th sub- winding Ns22 of grade the connection of different name end after anode and the 4th diode with the second diode D2
The cathode of D4 connects；The cathode of first diode D1 connects after connecting with the cathode of the second diode D2 with the positive of first capacitor C1
It connects, the cathode of first capacitor C1 is connect with the first ground wire GND1；The anode of third diode D3 and the anode of the 4th diode D4
It is connect after connection with the cathode of the second capacitor C2, the anode of the second capacitor C2 is connect with the first ground wire GND1；Wherein, first capacitor
The cathode of anode output the first voltage U1, the second capacitor C2 of C1 export second voltage U2.Wherein, the electricity where first voltage U1
Road is primary feedback road, and the circuit where second voltage U2 is bypass.
The working principle of multiple-channel output resonant transform circuit 200 is: 21 output switching signal of LLC module, in switching signal
Positive half period, the sub- winding Ns11 of first grade, the sub- winding Ns12 of second subprime are by first diode D1 to first voltage U1
Energy is transmitted, the third secondary sub- winding Ns22 of sub- winding Ns21 and the 4th grade is passed by the 4th diode D4 to second voltage U2
Delivery of energy amount.Similarly, in the negative half-cycle of switching signal, the third secondary sub- winding Ns22 of sub- winding Ns21 and the 4th grade passes through the
Two diode D2 transmit energy to first voltage U1, and the sub- winding Ns11 of first grade, the sub- winding Ns12 of second subprime pass through third
Diode D3 transmits energy to second voltage U2.
In the present embodiment, first voltage U1 is identical with the amplitude of second voltage U2, opposite in phase.
It is the diagrammatic cross-section of the transformer in circuit shown in Fig. 4 please also refer to Fig. 5, Fig. 5.As shown in figure 5, at the beginning of first
Grade winding Np1 and the layering of the first secondary windings are wound in bobbin winder bracket 221, wherein first grade in the first secondary windings around
Group Ns11 and the secondary sub- winding Ns21 of third are wound in same layer, the sub- winding Ns22 of sub- winding Ns12 and the 4th grade of second subprime
It is wound in another layer.
In the present embodiment, it the secondary sub- winding Ns21 of the sub- winding Ns11 of first grade and third and is wound on bobbin winder bracket 221；
The sub- winding Ns22 of sub- winding Ns12 and the 4th grade of second subprime is simultaneously wound on bobbin winder bracket 221.
In the present embodiment, the first armature winding Np1 is around in the innermost layer of bobbin winder bracket 221, the sub- winding Ns11 of first grade
The outside of the first armature winding Np1, sub- winding Ns12 and the 4th grade of second subprime are wound in the secondary sub- winding Ns21 of third
Sub- winding Ns22 is wound in the outside of the sub- winding Ns11 of first grade and the secondary sub- winding Ns21 of third.In other embodiments,
It is also possible to the outside that the sub- winding Ns22 of sub- winding Ns12 and the 4th grade of second subprime is wound in the first armature winding Np1, the
The sub- winding Ns11 of grade and the secondary sub- winding Ns21 of third are wound in sub- winding Ns12 and the 4th sub- winding of grade of second subprime
The outside of Ns22.
In the present embodiment, the secondary sub- winding Ns21 of the sub- winding Ns11 of first grade, the sub- winding Ns12 of second subprime, third
It is identical with the number of turns of the 4th sub- winding Ns22 of grade.
From the winding of the transformer of Fig. 5 it can be seen that firstly, the sub- winding Ns11 of first grade and third time of same layer setting
The sub- winding Ns22 of sub- winding Ns12 and the 4th grade of second subprime that the sub- winding Ns21 of grade is arranged with same layer is symmetrical in structure
, so leakage inductance between the two is mutually matched, the coefficient of coup is very high.Therefore the primary feedback road and second where first voltage U1
The cross regulation rate between bypass where voltage U2 also can have larger improvement compared to sandwich winding, to be easier to reach
To design requirement.Secondly, between the sub- winding Ns11 of first grade and the sub- winding Ns12 of second subprime, the secondary sub- winding Ns21 of third
It is full symmetric, between the two leakage inductance difference very little in structure between Ns22 between the 4th sub- winding of grade, thus
So that the positive half period of first diode D1, the second diode D2, third diode D3 and the 4th diode D4 in switching signal
It is at equilibrium with electric current in negative half-cycle, so as to reduce stresses of parts, reduces loss, improve efficiency.
Fig. 6 is the circuit diagram of the multiple-channel output resonant transform circuit of second embodiment of the invention.As shown in fig. 6, more
Road export resonance translation circuit 300 and the difference of multiple-channel output resonant transform circuit 200 are: transformer 32 further comprises
Two armature winding Np2 and second subprime winding, wherein second subprime winding includes sub- winding Na1 and the 6th grade of the 5th grade
Sub- winding Na2.And circuit 300 further comprises the 5th diode D5, the 6th diode D6 and third capacitor C3.
Wherein, LLC module 21 connects with the different name end of the Same Name of Ends of the first armature winding Np1, the second armature winding Np2 respectively
It connects, the different name end of the first armature winding Np1 is connected with the Same Name of Ends of the second armature winding Np2.
Wherein, the Same Name of Ends of the 5th sub- winding Na1 of grade is connect with the anode of the 5th diode D5, the 5th sub- winding of grade
The different name end of Na1 connect with the Same Name of Ends of the 6th sub- winding Na2 of grade and is followed by the second ground wire GND2, the 6th sub- winding Na2 of grade
Different name end connect with the anode of the 6th diode D6, after the cathode connection of the cathode of the 5th diode D5 and the 6th diode D6
It is connect with the anode of third capacitor C3, the cathode of third capacitor C3 meets the second ground wire GND2；Wherein, the anode of third capacitor C3 is defeated
Tertiary voltage U3 out.Wherein, the circuit where first voltage U1 is primary feedback road, where second voltage U2, tertiary voltage U3
Circuit is bypass.
The working principle of multiple-channel output resonant transform circuit 300 is: 21 output switching signal of LLC module, in switching signal
Positive half period, the sub- winding Ns11 of first grade, the sub- winding Ns12 of second subprime are by first diode D1 to first voltage U1
Energy is transmitted, the third secondary sub- winding Ns22 of sub- winding Ns21 and the 4th grade is passed by the 4th diode D4 to second voltage U2
Delivery of energy amount；The 5th sub- winding Na1 of grade transmits energy, the 6th diode D6 reverse phase to tertiary voltage U3 by the 5th diode D5
Cut-off.Similarly, in the negative half-cycle of switching signal, the third secondary sub- winding Ns22 of sub- winding Ns21 and the 4th grade passes through second
Diode D2 transmits energy to first voltage U1, and the sub- winding Ns11 of first grade, the sub- winding Ns12 of second subprime pass through the three or two
Pole pipe D3 transmits energy to second voltage U2；The 6th sub- winding Na2 of grade is transmitted by the 6th diode D6 to tertiary voltage U3
Energy, the cut-off of the 5th diode D5 reverse phase.
In the present embodiment, first voltage U1 is identical with the amplitude of second voltage U2, opposite in phase.
In the present embodiment, first voltage U1 is positive voltage, and second voltage U2 is negative voltage, and tertiary voltage U3 is positive electricity
Pressure.
Fig. 7 is the diagrammatic cross-section of the first embodiment of the transformer of circuit shown in Fig. 6.As shown in fig. 7, first it is primary around
Group Np1, the second armature winding Np2, the first secondary windings and second subprime are wound in bobbin winder bracket 321 around component layers, wherein first
The secondary sub- winding Ns21 of the sub- winding Ns11 of first grade and third in secondary windings is wound in same layer, the sub- winding of second subprime
Ns12 and the 4th time the sub- winding Ns22 of grade is wound in another layer, and the sub- winding Na1 of the 5th in second subprime winding time grade is wound in
One layer, the 6th sub- winding Na2 of grade be wound in another layer, the sub- winding Na2 of sub- winding Na1 and the 6th grade of the 5th grade is adjacent to be twined
Around.
In the present embodiment, it the secondary sub- winding Ns21 of the sub- winding Ns11 of first grade and third and is wound on bobbin winder bracket 221；
The sub- winding Ns22 of sub- winding Ns12 and the 4th grade of second subprime is simultaneously wound on bobbin winder bracket 221.
In the present embodiment, the first armature winding Np1 is around in the innermost layer of bobbin winder bracket 221, the second armature winding Np2 it is residual around
In the outermost layer of bobbin winder bracket 221；The sub- winding Ns11 of first grade and the secondary sub- winding Ns21 of third are wound in the first armature winding
The outside of Np1；The 5th sub- winding Na1 of grade is wound in the outer of the sub- winding Ns11 of the first grade and secondary sub- winding Ns21 of third
Side；The 6th sub- winding Na2 of grade is wound in the outside of the 5th sub- winding Na1 of grade；Second subprime winding Ns12 and the 4th time
The sub- winding Ns22 of grade is wound in the outside of the 6th sub- winding Na2 of grade.
In the present embodiment, the secondary sub- winding Ns21 of the sub- winding Ns11 of first grade, the sub- winding Ns12 of second subprime, third
It is identical with the number of turns of the 4th sub- winding Ns22 of grade, it is denoted as first the number of turns.Sub- winding Na1 and the 6th sub- winding of grade of 5th grade
The number of turns of Na2 is identical, is denoted as second the number of turns.Preferably, second the number of turns is two times of first the number of turns.
From the winding of the transformer of Fig. 7 it can be seen that firstly, the sub- winding Na1 of the 5th grade, the 6th sub- winding Na2 of grade
It is clipped in the sub- winding Ns11 of first grade and the secondary sub- winding Ns21 of third and second subprime of same layer setting of same layer setting
Between the two, four groups of windings are symmetrically, so between them in structure to winding Ns12 and the 4th sub- winding Ns22 of grade
Leakage inductance is mutually matched, and the coefficient of coup is very high.Therefore the primary feedback road where first voltage U1 and second voltage U2, tertiary voltage U3
Cross regulation rate between the bypass at place also can have larger improvement compared to sandwich winding, to more easily reach design
It is required that.Secondly, between the sub- winding Ns11 of first grade and the sub- winding Ns12 of second subprime, the secondary sub- winding Ns21 and the 4th of third
It between Ns22 is full symmetric, between the two leakage inductance difference very little in structure between secondary sub- winding, so that the
One diode D1, the second diode D2, third diode D3 and the 4th diode D4 are in the positive half period of switching signal and negative half
Electric current is at equilibrium in period, so as to reduce stresses of parts, reduces loss, improves efficiency.
Fig. 8 is the diagrammatic cross-section of the second embodiment of the transformer of circuit shown in Fig. 6.Transformer and Fig. 7 shown in Fig. 8
Shown in transformer the difference is that: sub- winding Na1 and the 6th sub- winding of grade of the 5th grade in second subprime winding Ns2
Na2 is wound in same layer, and the sub- winding Na2 of sub- winding Na1 and the 6th grade of the 5th grade is simultaneously wound on bobbin winder bracket 221.
In the present embodiment, the first armature winding Np1 is wound in the innermost layer of bobbin winder bracket 221, and the second armature winding Np2 is twined
It is around in the outermost layer of bobbin winder bracket 221；The secondary sub- winding Ns21 of the sub- winding Ns11 of first grade and third be wound in first it is primary around
The outside of group Np1；The sub- winding Na2 of sub- winding Na1 and the 6th grade of 5th grade is wound in the sub- winding Ns11 of first grade and
The outside of the sub- winding Ns21 of three grades；The sub- winding Ns22 of sub- winding Ns12 and the 4th grade of second subprime is wound in the 5th grade
The outside of winding Na1 and the 6th sub- winding Na2 of grade.
In the present embodiment, the secondary sub- winding Ns21 of the sub- winding Ns11 of first grade, the sub- winding Ns12 of second subprime, third
It is identical with the number of turns of the 4th sub- winding Ns22 of grade, it is denoted as third the number of turns.Sub- winding Na1 and the 6th sub- winding of grade of 5th grade
The number of turns of Na2 is identical, is denoted as the 4th the number of turns.Preferably, third the number of turns is identical with the 4th the number of turns.
From the winding of the transformer of Fig. 8 it can be seen that firstly, the 5th grade sub- winding Na1 and the 6th time of same layer setting
The sub- winding Na2 of grade is clipped in the sub- winding Ns11 of first grade and the secondary sub- winding Ns21 of third and the same layer setting of same layer setting
The sub- winding Ns22 of sub- winding Ns12 and the 4th grade of second subprime between the two, three groups of windings are symmetrical, institute in structure
With the equivalent winding and third secondary between them namely after the sub- sub- winding Ns12 of winding Ns11 parallel connection second subprime of first grade
Between equivalent winding after the 4th sub- winding Ns22 of grade of sub- winding Ns21 parallel connection, sub- winding Na1 and the 6th grade of the 5th grade
Equivalent winding, third time between sub- winding Na2 and after the sub- sub- winding Ns12 of winding Ns11 parallel connection second subprime of first grade
Equivalent winding and the sub- winding Na1 of the 5th grade, the 6th grade after the 4th sub- winding Ns22 of grade of the sub- winding Ns21 parallel connection of grade
Leakage inductance between winding Na2 is mutually matched, and the coefficient of coup is very high.Therefore the primary feedback road where first voltage U1 and second voltage
The cross regulation rate between bypass where U2, tertiary voltage U3 also can have larger improvement compared to sandwich winding, thus
More easily reach design requirement.Secondly, between the sub- winding Na2 of sub- winding Na1 and the 6th grade of the 5th grade, first grade around
Between the group Ns11 and sub- winding Ns12 of second subprime, between secondary sub- winding Ns21 and the 4th sub- winding of grade of third between Ns22
It is full symmetric, between the two leakage inductance difference very little in structure, so that first diode D1, the second diode
D2, third diode D3, the 4th diode D4, the 5th diode D5, the 6th diode D6 switching signal positive half period and
Electric current is at equilibrium in negative half-cycle, so as to reduce stresses of parts, reduces loss, improves efficiency.Again, work as multichannel
Export resonance translation circuit 300 works in decompression mode, in positive half period (negative half-cycle is similarly), where tertiary voltage U3
The 6th diode D6 in bypass reversely ends, and the 6th diode D6 will generate Reverse recovery due to voltage spikes at this time, and the electricity
Pointing peak will act on the 6th sub- winding Na2 of grade, at this time due to the sub- winding Na2 of the 6th grade and first sub- winding of grade
Phase mutual coupling between the Ns11 and sub- winding Ns12 of second subprime and the sub- winding Ns22 of secondary sub- winding Ns21 and the 4th grade of third
It closes and the sub- winding Ns11 of first grade and the sub- winding Ns12 of second subprime is clamped by first voltage U1 at this time just, the secondary son of third
Winding Ns21 and the 4th time the sub- winding Ns22 of grade is clamped by second voltage U2, so the voltage point on the 6th sub- winding Na2 of grade
Peak will be coupled to the secondary sub- winding Ns21 and the 4th of the sub- winding Ns11 of first grade, the sub- winding Ns12 of second subprime, third
On secondary sub- winding Ns22, and the electricity of first voltage U1 and second is respectively transmitted to by first diode D1 and the 4th diode D4
It presses in U2, so as to reduce the Reverse recovery due to voltage spikes of the 6th diode D6.Wherein, when the 6th sub- winding Na2 of grade with
Secondary sub- winding Ns21 and the 4th sub- winding of grade of the sub- winding Ns11 of first grade, the sub- winding Ns12 of second subprime, third
The coefficient of coup of Ns22 is higher, and the Reverse recovery due to voltage spikes reduction of the 6th diode D6 is more obvious.Similarly, in negative half-cycle,
The reverse phase that the 5th diode D5 can be reduced restores due to voltage spikes.
The beneficial effects of the present invention are: being in contrast to the prior art, the matched change of secondary windings leakage inductance of the invention
Depressor and multiple-channel output resonant transform circuit include bobbin winder bracket；First armature winding；First secondary windings, including first grade
The secondary sub- winding of the sub- winding of winding, second subprime, third and the 4th sub- winding of grade, the sub- winding of first grade and second subprime
Winding parallel, the third sub- winding of secondary and the 4th sub- winding parallel of grade；First armature winding and the first secondary windings layering around
It is formed on bobbin winder bracket；The secondary sub- winding of the sub- winding of first grade and third in first secondary windings is wound in same layer, and second
The sub- winding of grade and the 4th sub- winding of grade are wound in another layer.By the above-mentioned means, due to first sub- winding of grade and second
The sub- winding parallel of grade, the secondary sub- winding of third and the 4th sub- winding parallel of grade, so that first sub- winding of grade of same layer setting
It is symmetrical arranged in structure with the secondary sub- winding of third, the sub- winding of second subprime of same layer setting and the 4th sub- winding of grade, from
And it can be improved the coefficient of coup between secondary windings and match the leakage inductance of secondary windings, and then can be improved multiple-channel output electricity
The cross regulation rate of pressure.
Mode the above is only the implementation of the present invention is not intended to limit the scope of the invention, all to utilize this
Equivalent structure or equivalent flow shift made by description of the invention and accompanying drawing content, it is relevant to be applied directly or indirectly in other
Technical field is included within the scope of the present invention.
Claims (10)
1. a kind of matched transformer of secondary windings leakage inductance, which is characterized in that the transformer includes:
Bobbin winder bracket；
First armature winding；
First secondary windings, including the secondary sub- winding of the sub- winding of first grade, the sub- winding of second subprime, third and the 4th grade
Winding, the sub- winding of first grade and the sub- winding parallel of the second subprime, the secondary sub- winding of the third and the described 4th
Secondary sub- winding parallel；
Wherein, first armature winding and first secondary windings layering are wound in the bobbin winder bracket；
Wherein, the sub- winding of first grade in first secondary windings and the secondary sub- winding of the third are wound in same
Layer, the sub- winding of second subprime and the 4th sub- winding of grade are wound in another layer.
2. transformer according to claim 1, which is characterized in that the sub- winding of first grade and the secondary son of the third
Winding is simultaneously wound on the bobbin winder bracket；The sub- winding of second subprime and the 4th sub- winding of grade are simultaneously wound on the bobbin winder bracket
On.
3. transformer according to claim 2, which is characterized in that first armature winding is around in the bobbin winder bracket most
The secondary sub- winding of internal layer, the sub- winding of first grade and the third is wound in the outside of first armature winding, described
The sub- winding of second subprime and the 4th sub- winding of grade be wound in the secondary son of the sub- winding of first grade and the third around
The outside of group.
4. transformer according to claim 3, which is characterized in that the transformer further comprises:
Second armature winding；
Second subprime winding, including the 5th sub- winding of grade and the 6th sub- winding of grade；
Wherein, second armature winding and the second subprime are wound in the bobbin winder bracket around component layers.
5. transformer according to claim 4, which is characterized in that the 5th grade in the second subprime winding
Winding and the 6th sub- winding of grade are wound in same layer, and the 5th sub- winding of grade and the 6th sub- winding of grade are simultaneously
It is wound on the bobbin winder bracket.
6. transformer according to claim 4, which is characterized in that the 5th grade in the second subprime winding
Winding is wound in one layer, and the sub- winding of the 6th grade winds another layer, the 5th sub- winding of grade and six grade
The adjacent winding of winding.
7. transformer according to claim 5 or 6, which is characterized in that second armature winding is wound in the coiling
The outermost layer of frame, the 5th sub- winding of grade and the 6th sub- winding of grade are wound in first grade of same layer setting
The sub- winding of the second subprime and the 4th grade of the secondary sub- winding of sub- winding and the third and same layer setting around
Between group.
8. transformer according to claim 4, which is characterized in that the sub- winding of first grade, second subprime
The secondary sub- winding of winding, the third is identical with the number of turns of the 4th sub- winding of grade；It is the 5th sub- winding of grade, described
The number of turns of the 6th sub- winding of grade is identical.
9. transformer according to claim 4, which is characterized in that in the positive half period of switching signal, first grade
Sub- winding and the sub- winding of the second subprime export first voltage by first diode, the sub- winding of the third secondary with it is described
The 4th sub- winding of grade exports second voltage by the 4th diode；In the negative half-cycle of switching signal, the secondary son of the third
Winding and the 4th sub- winding of grade export first voltage by the second diode, the sub- winding of first grade and described the
The sub- winding of secondary stage exports second voltage by third diode；The first voltage is identical as the second voltage amplitude, phase
Position is opposite.
10. a kind of multiple-channel output resonant transform circuit, which is characterized in that including the described in any item transformers of claim 1-9.
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| CN201810120348.2A CN108461260B (en) | 2018-02-06 | 2018-02-06 | The matched transformer of secondary windings leakage inductance and multiple-channel output resonant transform circuit |
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| CN201810120348.2A CN108461260B (en) | 2018-02-06 | 2018-02-06 | The matched transformer of secondary windings leakage inductance and multiple-channel output resonant transform circuit |
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| CN109951210B (en) * | 2019-02-28 | 2020-09-01 | 北京中科格励微科技有限公司 | Monolithic integrated full-isolation RS-232 transceiver |
| CN111043388B (en) * | 2019-12-18 | 2022-03-04 | 中国船舶重工集团有限公司第七一0研究所 | High-pressure electromagnetic valve for underwater high-pressure air gun |
| CN112087122B (en) * | 2020-08-19 | 2022-05-24 | 西安空间无线电技术研究所 | Winding structure and method for adjusting cross adjustment rate of multi-path high-voltage output |
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| JP4830579B2 (en) * | 2006-03-29 | 2011-12-07 | 株式会社村田製作所 | Transformer connection circuit, discharge tube lighting circuit, and electronic device |
| GB2508775B (en) * | 2011-10-21 | 2018-09-19 | Murata Manufacturing Co | Switching power supply device |
| CN203205229U (en) * | 2013-05-06 | 2013-09-18 | 易峰 | Large-current planar transformer manufactured on printed circuit board |
| US20170117091A1 (en) * | 2015-10-23 | 2017-04-27 | Power Integrations, Inc. | Power converter transformer with reduced leakage inductance |
| CN106449054A (en) * | 2016-11-23 | 2017-02-22 | 深圳Tcl数字技术有限公司 | LLC transformer and switching power supply |
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