CN109546860B - Half-bridge-full-bridge combined direct current converter based on component multiplexing - Google Patents
Half-bridge-full-bridge combined direct current converter based on component multiplexing Download PDFInfo
- Publication number
- CN109546860B CN109546860B CN201811292961.9A CN201811292961A CN109546860B CN 109546860 B CN109546860 B CN 109546860B CN 201811292961 A CN201811292961 A CN 201811292961A CN 109546860 B CN109546860 B CN 109546860B
- Authority
- CN
- China
- Prior art keywords
- bridge
- capacitor
- full
- direct current
- winding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000003990 capacitor Substances 0.000 claims abstract description 29
- 238000002955 isolation Methods 0.000 claims abstract description 16
- 238000004804 winding Methods 0.000 claims description 48
- 230000000903 blocking effect Effects 0.000 abstract description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 5
- 230000007423 decrease Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000010363 phase shift Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Images
Classifications
-
- 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
- H02M3/00—Conversion of DC power input into DC power output
- H02M3/22—Conversion of DC power input into DC power output with intermediate conversion into AC
- H02M3/24—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters
- H02M3/28—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC
-
- 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
- H02M3/00—Conversion of DC power input into DC power output
- H02M3/22—Conversion of DC power input into DC power output with intermediate conversion into AC
- H02M3/24—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters
- H02M3/28—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC
- H02M3/325—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33507—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters
- H02M3/33523—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters with galvanic isolation between input and output of both the power stage and the feedback loop
-
- 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
- H02M3/00—Conversion of DC power input into DC power output
- H02M3/22—Conversion of DC power input into DC power output with intermediate conversion into AC
- H02M3/24—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters
- H02M3/28—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC
- H02M3/325—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/3353—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having at least two simultaneously operating switches on the input side, e.g. "double forward" or "double (switched) flyback" converter
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
- Rectifiers (AREA)
Abstract
The embodiment of the invention discloses a half-bridge-full-bridge combined direct current converter based on component multiplexing, which comprises a direct current power supply, an inverter bridge arm, an isolation transformer, a blocking capacitor, a rectifying circuit and a filter circuit, wherein an auxiliary transformer and a voltage-dividing capacitor are introduced on the basis of a full-bridge structure consisting of the direct current power supply, the inverter bridge arm, the isolation transformer, the blocking capacitor and the rectifying circuit. The direct current converter has the characteristics of wide zero-voltage switching range, no circulating current loss, small current ripple and the like, and is simple in circuit structure and high in conversion efficiency.
Description
Technical Field
The invention relates to the technical field of power electronics, in particular to a half-bridge-full-bridge combined direct current converter based on component multiplexing.
Background
In power electronic equipment, a dc converter is used to convert a dc signal into another dc quantity of fixed or adjustable voltage, and research on the dc converter is also widely focused by power electronic technology practitioners at home and abroad. The direct current converter can be divided into three topologies, namely a single-tube topology, a double-tube topology and a full-bridge topology according to the number of switching tubes contained in the direct current converter. Generally speaking, the power level of a dc converter is proportional to the number of switching tubes, a full-bridge converter composed of four switching tubes has the highest power level, when a phase-shift control mode is adopted, the switching tubes can realize soft switching, the switching frequency is fixed, and the dc converter is widely applied to medium and high power occasions.
Although the structure of the direct current converters in different forms has great difference, the structure can be divided into three parts: the first is chopping, and the switching controllability of a power electronic device is utilized to chop input direct current to obtain a signal containing high-frequency alternating current components; secondly, rectifying, namely setting the alternating current part to obtain a signal containing a direct current component and a high-frequency alternating current component; and thirdly, filtering high-frequency alternating current components in the signals, and realizing stable direct current output. Although the topology of the direct current converters in different forms has great difference, the constituent units of the direct current converters generally have certain regularity. The characteristic enables multiplexing of components between different topologies, and further improves the operating characteristics of the conversion system.
In practical application, the conventional phase-shifted full-bridge converter mainly has the following problems: the voltage of the rectifier diode is oscillated, the soft switching range of a lag bridge arm is narrow, and the primary side has circulation loss and duty ratio loss. The full-bridge converter comprises four switching tubes and two half-bridge arms, and based on the idea of component multiplexing, one of the arms can be used for forming a half-bridge topology to realize the multiplexing of the switching tubes. The secondary sides of the half-bridge and the full-bridge topology can adopt different topology forms to combine to realize the performance improvement of the traditional phase-shifted full-bridge converter.
Disclosure of Invention
The technical problem to be solved by the embodiments of the present invention is to provide a half-bridge-full-bridge combined dc converter based on component multiplexing. The zero-voltage switching range of the switching tube can be widened, the circulation loss is eliminated, the output ripple is reduced, and the conversion efficiency of the converter is improved.
In order to solve the above technical problem, an embodiment of the present invention provides a half-bridge to full-bridge combined dc converter based on component multiplexing, including first to fourth switching tubes, first to third capacitors, first and second isolation transformers, first to fourth rectifying diodes, and a dc power supply;
the first to fourth switching tubes form a full-bridge circuit, are connected with the positive and negative output ends of the direct-current power supply in parallel in the forward direction, and are connected with the positive and negative output ends of the direct-current power supply in parallel after being connected in series;
the first isolation transformer comprises a primary winding and a secondary winding, one end of the primary winding is connected with the connection point of the first switching tube and the third switching tube, the other end of the primary winding is connected with one end of the third capacitor, one end of the secondary winding is connected with the cathode of the first rectifier diode and the anode of the third rectifier diode, the other end of the secondary winding is connected with the cathode of the second rectifier diode and the anode of the fourth rectifier diode, and the other end of the third capacitor is connected with the connection point of the second switching tube and the fourth switching tube;
the second isolation transformer comprises a primary winding and two secondary windings, one end of the primary winding is connected with the connection point of the second switching tube and the fourth switching tube, the other end of the primary winding is connected with the connection point of the first capacitor and the second capacitor, one end of one secondary winding is connected with the cathode of the third rectifying diode, one end of the other secondary winding is connected with the cathode of the fourth rectifying diode, and the other ends of the two secondary windings are directly connected.
The other end of the two secondary windings of the second isolation transformer is connected with one end of the filter inductor, the other end of the filter inductor is connected with one end of the fourth capacitor to serve as a positive end of output voltage, and the other end of the fourth capacitor is connected with anodes of the first rectifying diode and the second rectifying diode to serve as a negative end of the output voltage.
The embodiment of the invention has the following beneficial effects: the phase-shifting control mode of the converter is the same as that of a conventional full-bridge converter, an auxiliary transformer and a voltage-dividing capacitor are introduced by multiplexing a lagging bridge arm of the full-bridge converter, a half-bridge topological structure is constructed, the half-bridge topology operates under the working condition of full duty ratio, the continuity of power transmission of the primary side and the secondary side is guaranteed, the primary side circulating current loss can be eliminated, the output ripple wave is reduced, meanwhile, the soft switching range of a lagging switching tube can be widened by increasing the exciting current of the auxiliary transformer, and the exciting current only flows through the lagging bridge arm without causing excessive conduction loss.
On the secondary side of the converter, a bridge rectification structure is adopted in a full-bridge topology, a full-wave rectification structure is adopted in an introduced half-bridge topology, the two rectifiers are combined in series, and a group of rectifier diodes and an output filter are multiplexed, so that the number of additional components is reduced, and the power density of the converter is improved.
Drawings
FIG. 1 is a schematic diagram of the overall circuit configuration of the present invention;
wherein: vinIs a DC power supply, Q1、Q2、Q3、Q4Respectively a first to a fourth switching tube, C1、C2、Cb、CoAre respectively a first to a fourth capacitor，T1、T2Respectively a first and a second isolation transformer, np、mpPrimary windings of first and second isolation transformers, nsIs the secondary winding of the first isolation transformer, ms1、ms2Secondary windings, D, of a second isolating transformer, respectively1、D2、D3、D4Are respectively a first to a fourth rectifier diode, LoIs a filter inductor and R is a load resistor.
FIG. 2 is a schematic diagram of an equivalent circuit diagram of the present invention;
FIG. 3 is a schematic representation of the principal operating waveforms of FIG. 2 provided by the present invention;
FIGS. 4-10 are equivalent circuit diagrams of FIG. 2 in different modes according to the present invention.
The essential physical quantities in the above figures are: d is the duty cycle, TsIs a switching cycle with a load current of IoN is T1、T2Ratio of turns of secondary side to primary side of transformer, LklIs T1Is less than the leakage inductance ofk2Is T2Is less than the leakage inductance ofmIs T2Excitation inductance of, C1And C2Equivalent to a constant voltage source of 0.5VinThe filter inductor is equivalent to a constant current source Io。
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings.
The circuit connection schematic diagram of the invention is shown in fig. 1, and the half-bridge-full-bridge combined direct current converter based on component multiplexing comprises a first switch tube (Q) to a fourth switch tube (Q)1～Q4) First and second isolation transformers (T)1、T2) First to fourth rectifier diodes (D)1～D4) First to fourth capacitors (C)1、C2、Cb、Co) DC power supply (V)in) And a filter inductance (L)o) Transformer T1Comprising a primary winding npAnd a secondary winding nsTransformer T2Comprising a primary winding mpAnd secondary winding ms1、ms2。
The first to the fourth switching tubes form a full bridge circuit, the positive and the negative output ends of the direct current power supply are connected in parallel in the forward direction, the first and the second capacitors are connected in parallel after being connected in series, the first isolation transformer comprises a primary winding and a secondary winding, one end of the primary winding is connected with the connection point of the first and the third switching tubes, the other end of the primary winding is connected with one end of the third capacitor, one end of the secondary winding is connected with the cathode of the first rectifier diode and the anode of the third rectifier diode, the other end of the secondary winding is connected with the cathode of the second rectifier diode and the anode of the fourth rectifier diode, the other end of the third capacitor is connected with the connection point of the second and the fourth switching tubes, the second isolation transformer comprises a primary winding and two secondary windings, one end of the primary winding is connected with the connection point of the second and the fourth switching tubes, the other end of the primary winding is connected with the connection point of the, one end of one secondary winding is connected with the cathode of the third rectifier diode, one end of the other secondary winding is connected with the cathode of the fourth rectifier diode, the other ends of the secondary windings are directly connected and connected with one end of the filter inductor, the other end of the filter inductor is connected with one end of the fourth capacitor, the connection point is the positive end of the output voltage, and the other end of the fourth capacitor is connected with the anodes of the first rectifier diode and the second rectifier diode and serves as the negative end of the output voltage.
In one embodiment of the present invention, Q1、Q3Form a leading bridge arm, Q2、Q4Forming a lagging leg of the transformer T1DC blocking capacitor CbForm a full bridge topology, Q2、Q4、C1、C2And T2Forming a half-bridge topology, when the dead time is ignored, the duty ratio of each switching tube is 0.5, adjusting the phase shift angle between two bridge arms to realize the regulation of the output voltage, wherein on the secondary side, the full-bridge topology adopts a bridge rectifier structure, the half-bridge topology adopts a full-wave rectifier structure, and two groups of rectifiers share D2、D4A diode and an output filter as in figure 1.
The following describes a specific working principle of the present invention with an equivalent circuit simplified in fig. 2 and with reference to fig. 3 to 10. As can be seen from FIG. 3, the whole converter has 14 switching modes in one switching period, which are t0～t1]、[t1～t2]、[t2～t3]、[t3～t4]、[t4～t5]、[t5～t6]、[t6～t7]、[t7～t8]、[t8～t9]、[t9～t10]、[t10～t11]、[t11～t12]、[t12～t13]、[t13～t14]Wherein, [ t ]0～t7]For the first half period, [ t ]7～t14]In the latter half cycle, the operation of each switching mode is specifically analyzed below.
To simplify the analysis, the following assumptions were made: 1) all devices are ideal devices; 2) the parasitic devices of the switch tube only consider the body diode and the junction capacitance; 3) ignore T1The leakage inductance of the exciting inductance of the transformer is Lkl；4)T2Has an excitation inductance of LmLeakage inductance of Lk2(ii) a 5) Output filter inductance LoAs a constant current source, a capacitor C1And C2Equivalent to a constant voltage source.
Switched mode 1[ t ]0～t1](corresponding to FIG. 4): q1、Q4、D2、D3Conduction is carried out in a duty cycle period, the output filter inductor can be mapped to a primary side, the primary side current is approximately a constant value, and CbThe voltage increases linearly.
Switched mode 2[ t ]1～t2](corresponding to FIG. 5): at t1Time, Q1Off, Q1、Q3The junction capacitor is charged and discharged linearly through a constant current source, the midpoint voltage of the leading arm, the rectified voltage and the T1The primary and secondary side voltages of the transformer begin to drop linearly.
Switching mode 3[ t ]2～t3](corresponding to FIG. 6): at t2Time, leading arm midpoint voltage, T1The primary and secondary side voltages of the transformer are reduced to 0, D1On, D1、D2Start of commutation, T1Is short-circuited. At t3Time, vleaDown to 0, Q3Is turned on by the body diode, Q3Zero voltage turn-on can be achieved during this period CbApproximately constant application of voltage to Lk1Upper, primary side current ipLinearly decreases at t4At that time, the primary current drops to zero and D1、D2End of commutation, D2And (6) turning off.
Switch mode 4[ t ]3～t4](corresponding to FIG. 7): in the time period, the primary side current i of the full-bridge topologypIs zero, D1、D3And remains on for a period referred to as a non-duty cycle period.
Switching mode 5[ t ]4～t5](corresponding to FIG. 8): at t4Time, Q4Turn off, linear rise of midpoint voltage in lagging arm, D4The reverse voltage at both ends gradually decreases.
Switched mode 6[ t ]5～t6](corresponding to FIG. 9): at t5Time of day, D4The voltages at both ends drop to zero, T1And T2The secondary winding is connected in parallel, the junction capacitance and the leakage inductance start to resonate, the midpoint voltage of the lagging arm resonates and rises at t6At that time, the midpoint voltage of the lagging arm rises to Vin，Q2The body diode begins to conduct and, therefore, Q2Zero voltage turn-on can be achieved.
Switch mode 7[ t ]6～t7](corresponding to FIG. 10): d4Increasing the current gradually, D3The current gradually decreases at t7Time D3The current drops to zero and the converter enters the second half cycle.
Second half period [ t ]7～t14]Working principle of (1) and the first half period [ t ]0～t7]Basically, the same is true, but the current and the voltage change in opposite directions, and the description is not repeated.
Summarizing the working process, all the switching tubes of the converter can realize zero-voltage switching, half-bridge topology runs at a full duty ratio, the continuity of power transmission of the primary side and the secondary side is ensured, the primary side circulating current loss and the output current ripple are reduced, and the exciting current only passes through the lagging arm, so that the soft switching range of the lagging tube can be widened by increasing the exciting current, but the conduction loss cannot be obviously increased.
While the invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not to be limited to the disclosed embodiment, but on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811292961.9A CN109546860B (en) | 2018-10-31 | 2018-10-31 | Half-bridge-full-bridge combined direct current converter based on component multiplexing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811292961.9A CN109546860B (en) | 2018-10-31 | 2018-10-31 | Half-bridge-full-bridge combined direct current converter based on component multiplexing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109546860A CN109546860A (en) | 2019-03-29 |
| CN109546860B true CN109546860B (en) | 2020-03-20 |
Family
ID=65846286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811292961.9A Expired - Fee Related CN109546860B (en) | 2018-10-31 | 2018-10-31 | Half-bridge-full-bridge combined direct current converter based on component multiplexing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109546860B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114900047B (en) * | 2022-04-20 | 2024-06-14 | 汕头大学 | Hybrid three-level direct current converter based on double-transformer structure |
| CN118920875A (en) * | 2024-07-19 | 2024-11-08 | 南京理工大学 | Full-period power transmission converter based on soft switch and input enhancement multiplexing circuit |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100828179B1 (en) * | 2006-08-29 | 2008-05-08 | 한국전기연구원 | Multiphase Flyback and Forward Synchronous Rectifier Circuit |
| CN101202507A (en) * | 2007-12-11 | 2008-06-18 | 株洲南车时代电气股份有限公司 | New type phase shifting full bridge soft switch converter |
| CN101604917A (en) * | 2009-06-24 | 2009-12-16 | 南京航空航天大学 | Zero-Voltage Switching Full-Bridge DC Converter Using Passive Auxiliary Network |
| WO2015070047A2 (en) * | 2013-11-07 | 2015-05-14 | Rompower Energy Systems, Inc. | Soft switching converter with dual transformer by steering the magnetizing current |
| CN107493015B (en) * | 2017-09-14 | 2019-08-23 | 北京理工大学 | A kind of two-way DC converter and its Poewr control method of dual transformer structure |
-
2018
- 2018-10-31 CN CN201811292961.9A patent/CN109546860B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN109546860A (en) | 2019-03-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2021077757A1 (en) | Wide gain control method for variable topology llc resonant converter | |
| CN108028605B (en) | Converter with hold-up operation | |
| CN111181408B (en) | A kind of resonant converter and control method based on hybrid rectifier structure | |
| CN106685231B (en) | A primary-side clamped soft-switching full-bridge converter and its asymmetric control method | |
| US6396717B2 (en) | Switching power supply having an improved power factor by voltage feedback | |
| WO2015106701A1 (en) | Ac-dc conversion circuit and control method therefor | |
| EP1772950A2 (en) | Switching power supply circuit | |
| CN109302078B (en) | DC-DC switching power supply based on synchronous rectification mode | |
| TW200929814A (en) | DC transformer | |
| CN106505866B (en) | A kind of three Level Full Bridge DC converters | |
| CN104917412A (en) | Single stage power factor correction phase-shift full bridge topology circuit | |
| US20210273567A1 (en) | Switch-mode power supplies including three-level llc circuits | |
| CN110572039A (en) | A Novel Full-Bridge DC Converter Based on Current Doubler Rectifier | |
| CN108471238A (en) | A kind of converter | |
| CN108023411B (en) | A single-phase non-contact power supply system with power factor correction function | |
| CN103546038B (en) | A kind of soft switching full-bridge direct-current converter suppressing secondary-side voltage oscillation | |
| CN101604916A (en) | Zero-Voltage Switching Full-Bridge DC Converter Based on π-type Auxiliary Network | |
| CN113765358A (en) | Single-stage interleaved parallel AC-DC resonant conversion circuit and control method thereof | |
| CN109546860B (en) | Half-bridge-full-bridge combined direct current converter based on component multiplexing | |
| CN110445387B (en) | A kind of topology structure and control method of component power supply | |
| CN109245547B (en) | A Hybrid Rectifier Zero-Voltage Switching Full-Bridge DC Converter | |
| CN209170230U (en) | DC-DC Switching Power Supply based on synchronous rectification mode | |
| CN110071643A (en) | A kind of full-bridge direct current converter with variable sofe switch pattern | |
| CN103782499A (en) | Isolated switch-mode dc/dc converter with sine wave transformer voltages | |
| CN110729906A (en) | A zero-voltage conversion CLL resonant DC-DC converter and its control method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200320 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |