CN107171576A - A kind of voltage doubling rectifing circuit and its application in resonance isolated converter - Google Patents
A kind of voltage doubling rectifing circuit and its application in resonance isolated converter Download PDFInfo
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- CN107171576A CN107171576A CN201710435858.4A CN201710435858A CN107171576A CN 107171576 A CN107171576 A CN 107171576A CN 201710435858 A CN201710435858 A CN 201710435858A CN 107171576 A CN107171576 A CN 107171576A
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- diode
- circuit
- electric capacity
- doubling rectifing
- voltage doubling
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- 230000005611 electricity Effects 0.000 claims description 3
- 230000001131 transforming Effects 0.000 claims 2
- 238000006243 chemical reaction Methods 0.000 abstract description 9
- 230000000875 corresponding Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000051 modifying Effects 0.000 description 1
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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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/06—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes without control electrode or semiconductor devices without control electrode
- H02M7/10—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes without control electrode or semiconductor devices without control electrode arranged for operation in series, e.g. for multiplication of voltage
-
- 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
-
- 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
Abstract
The invention provides a kind of voltage doubling rectifing circuit, it is characterised in that including diode D1、D2、D3、D4、D5、D6、D7、D8, electric capacity C1、C2、C3、C4、C5、C6With 1 load.Another technical scheme of the present invention there is provided a kind of resonance isolated converter, including transformer, transformer primary side circuit is full-bridge LLC resonance circuits, it is characterised in that transformer secondary circuit is above-mentioned voltage doubling rectifing circuit or above-mentioned restructural voltage doubling rectifing circuit.Circuit structure proposed by the invention can very effectively improve conversion efficiency of the traditional LLC resonance circuit in the wide output scene of high pressure.The secondary side rectification circuit proposed simultaneously can deduce out a variety of restructural voltage doubling rectifing circuits, meet the wide output of different grades of high pressure and require.This kind of restructural rectification circuit proposed is equally applicable in wide input circuit.
Description
Technical field
The present invention relates to a kind of voltage doubling rectifing circuit, more particularly to a kind of six voltage doubling rectifing circuit or restructural voltage multiplying rectifier
Circuit.The invention further relates to the resonance isolated variable of a kind of above-mentioned voltage doubling rectifing circuit of application or restructural voltage doubling rectifing circuit
Device.
Background technology
With the continuous innovation of Power Electronic Technique, the performance in terms of high efficiency, low-power consumption for DC Switching Power Supplies
It is required that also improving constantly.And LLC resonant converter has simple in construction, convenient control due to it, high conversion efficiency is easily realized
The advantages of no-voltage of switching tube opens (ZVS) and widely applied.
In some practical applications, D/C power needs to provide wide output voltage range, and with good output voltage
Regulation performance.However, input voltage is constant, in the case of output voltage range ultra-wide, the conversion efficiency of LLC resonant converter
It can substantially reduce.This is due to LLC resonant converter for frequency modulation(PFM) topology, when being deployed to Width funtion gain ranging and applying,
Its switching frequency needs a very wide adjustable range (as shown in Figure 1).And with switching frequency off-resonance frequency, it is changed
Obvious decay occurs in efficiency.
On the other hand, the secondary of LLC resonant converter often uses conventional bridge rectifier structure.Based on the fact that:A) bridge
The voltage stress of the diode of formula rectifier be equal to output voltage, b) high voltage power diode exist manufacturing process it is still immature,
The problems such as high expensive, in high output voltage application, bridge rectifier is not considered as preferred scheme.
To sum up, the LLC resonance circuits based on conventional bridge rectifier are applied under high pressure, wide output scene, existed all
The problem of many urgent need to resolve.
The content of the invention
The technical problem to be solved in the present invention is:LLC resonant converter based on conventional bridge rectifier is defeated in high pressure, width
The limitation gone out in range applications.
In order to solve the above-mentioned technical problem, a technical scheme of the invention there is provided a kind of voltage doubling rectifing circuit, its
It is characterised by, including diode D1、D2、D3、D4、D5、D6、D7、D8, electric capacity C1、C2、C3、C4、C5、C6, wherein:Electric capacity C1And electric capacity
C4It is connected on diode D2Positive pole and diode D5Between negative pole, diode D1Negative pole and diode D2Positive pole is connected, diode D1
Positive pole is connected to electric capacity C2Lower pin, electric capacity C2Upper pin and diode D3Positive pole and diode D2Negative pole is connected, electric capacity
C5Upper pin and electric capacity C2Lower pin is connected with the upper port of transformer, electric capacity C5Lower pin connection diode D5Positive pole with
And diode D6Negative pole, diode D4Positive pole and diode D5Negative pole is connected, diode D4Negative pole and electric capacity C5Upper pin is connected, and two
Pole pipe D7Positive pole and diode D8Negative pole is connected, and is connected on diode D3Positive pole and diode D6Between negative pole, electric capacity C3And electricity
Hold C6It is connected on diode D3Negative pole and diode D6Between positive pole, the lower port of transformer connects electric capacity C simultaneously1Lower pin,
Diode D7Positive pole and electric capacity C3Lower pin, diode D3Negative pole is power supply positive output end, diode D6Just extremely power supply bear it is defeated
Go out end.
Preferably, the electric capacity C1By switching S between lower pin and the transformer lower port5It is connected, formation can be weighed
Structure voltage doubling rectifing circuit.
Preferably, the switch S5Connected and formed by two MOSFET pipes.
Preferably, the diode D7Positive pole is with the transformer lower port by switching S6It is connected, forms restructural times
Voltage rectifier.
Preferably, the switch S6Connected and formed by two MOSFET pipes.
Preferably, in the diode D2Negative pole and the electric capacity C2Upper pin between tandem tap S7, in two pole
Pipe D5Positive pole and the electric capacity C5Lower pin between tandem tap S8, form restructural voltage doubling rectifing circuit.
Preferably, the switch S7And the switch S8Managed using single MOSFET.
Another technical scheme of the present invention there is provided a kind of resonance isolated converter, including transformer, transformer primary
Side circuit is full-bridge LLC resonance circuits, it is characterised in that transformer secondary circuit is above-mentioned voltage doubling rectifing circuit or above-mentioned
Restructural voltage doubling rectifing circuit.
Circuit structure proposed by the invention can very effectively improve traditional LLC resonance circuit in the wide output scene of high pressure
In conversion efficiency it is low the problem of.Meanwhile, the secondary side rectification circuit proposed can deduce out a variety of restructural voltage multiplying rectifier electricity
Road, is required with meeting the wide output of different grades of high pressure.This kind of restructural rectification circuit proposed is equally applicable for wide input
In circuit.With reference to the primary side input circuit of different structure, the new-type circuit of formation can meet different wide input circuits well
The requirement of grade.
Brief description of the drawings
Fig. 1 is voltage gain and the corresponding relation of working frequency in traditional LLC circuit;
Fig. 2 be embodiment 1 in resonance isolated converter circuit diagram;
Fig. 3 a be embodiment 2 in resonance isolated converter circuit diagram;
Fig. 3 b be embodiment 2 in restructural voltage doubling rectifing circuit switch S5Equivalent circuit diagram after closure;
Fig. 3 c be embodiment 2 in restructural voltage doubling rectifing circuit switch S5Equivalent circuit diagram after disconnection;
Fig. 4 a be embodiment 3 in resonance isolated converter circuit diagram;
Fig. 4 b be embodiment 3 in restructural voltage doubling rectifing circuit switch S5Closure, switch S6Equivalent circuit after disconnection
Figure;
Fig. 4 c be embodiment 3 in restructural voltage doubling rectifing circuit switch S5Disconnect, switch S6Equivalent circuit after closure
Figure;
Fig. 4 d be embodiment 3 in restructural voltage doubling rectifing circuit switch S5Disconnect, switch S6Equivalent circuit after disconnection
Figure;
Fig. 5 is the switch S in embodiment 3 and embodiment 35And switch S6Schematic diagram;
Fig. 6 a be embodiment 4 in resonance isolated converter circuit diagram;
Fig. 6 b be embodiment 4 in restructural voltage doubling rectifing circuit switch S7Disconnect, switch S8Equivalent circuit after disconnection
Figure;
Fig. 6 c be embodiment 4 in restructural voltage doubling rectifing circuit switch S7Closure, switch S8Equivalent circuit after disconnection
Figure;
Fig. 6 d be embodiment 4 in restructural voltage doubling rectifing circuit switch S7Closure, switch S8Equivalent circuit after closure
Figure;
Fig. 7 is voltage gain and the corresponding relation of working frequency in 2 circuits of implementation;
Fig. 8 is voltage gain and the corresponding relation of working frequency in 3 circuits of implementation;
Fig. 9 is voltage gain and the corresponding relation of working frequency in 4 circuits of implementation.
Embodiment
To become apparent the present invention, hereby with preferred embodiment, and accompanying drawing is coordinated to be described in detail below.
Embodiment 1
As shown in Fig. 2 a kind of resonance isolated converter disclosed in the present embodiment includes transformer, transformer primary side circuit is
Conventional full bridge LLC resonance circuits, secondary circuit is six voltage doubling rectifing circuits.
The topological structure of six voltage doubling rectifing circuit includes 8 diodes, 6 electric capacity and 1 load R, and specific connection is closed
System is described as follows:Electric capacity C1And C4It is connected on diode D2Positive pole and diode D5Between negative pole, diode D1Negative pole and diode
D2Positive pole is connected, diode D1Positive pole is connected to electric capacity C2Lower pin, electric capacity C2Upper pin and diode D3Positive pole and two
Pole pipe D2Negative pole is connected, electric capacity C5Upper pin and electric capacity C2Lower pin is connected with the upper port of transformer, electric capacity C5Lower pin
Connect diode D5Positive pole and diode D6Negative pole, diode D4Positive pole and diode D5Negative pole is connected, diode D4Negative pole with
Electric capacity C5Upper pin is connected, diode D7Positive pole and diode D8Negative pole is connected, and is connected on diode D3Positive pole and diode D6It is negative
Between pole, electric capacity C3With electric capacity C6It is connected on diode D3Negative pole and diode D6Between positive pole, the lower port of transformer connects simultaneously
Meet electric capacity C1Lower pin, diode D7Positive pole and electric capacity C3Lower pin, diode D3Negative pole is power supply positive output end, two poles
Pipe D6Just extremely power supply negative output terminal.
The circuit topology of six voltage doubling rectifing circuits proposed by the invention has the working effect of six voltage doubling rectifing circuits.Again
With reference to the primary circuit and transformer turns ratio of different structure, the requirement of high output voltage can be met well.Meanwhile, in order to more
The requirement of wide output voltage range is met well and ensures the high conversion efficiency under the conditions of full output area, and the present invention is being proposed
Circuit base on deduced out three kinds of novel circuit configurations disclosed in following examples again.
Embodiment 2
As shown in Figure 3 a, the present embodiment and the difference of embodiment 1 are:By script electric capacity C1Lower pin and transformer lower end
The connected point of mouth disconnects, by switching S5It is attached.With reference to Fig. 5, S is switched5Connected and formed by two MOSFET pipes.
As shown in Figure 3 b, as switch S5During closure, secondary circuit is equivalent to six voltage doubling rectifing circuits.As shown in Figure 3 c, when
Switch S5During disconnection, secondary circuit is equivalent to four voltage doubling rectifing circuits.Wherein, when the circuit is operating, the secondary circuit proposed
Compared with traditional four multiplication of voltage and six voltage-multiplying circuits, any device is not increased.Thus, propose that circuit will not increase extra device
Loss.For the circuit proposed, by the conversion of secondary circuit structure, the model of wide output voltage can be ensured well
Enclose requirement.
The input voltage of circuit disclosed in the present embodiment is set to 390V, and resonant frequency is set to 100kHz, output voltage range
It is set to [500V, 1100V].As shown in fig. 7, corresponding switching frequency adjustable range is [72kHz, 129kHz].Relative to based on
For the traditional LLC resonance circuit of bridge rectifier, in the case of identical output voltage range, the scope of switching frequency is smaller.Switch
Sweep range is near resonance point, it is ensured that the high conversion efficiency of integrated circuit.
Embodiment 3
As shown in fig. 4 a, the present embodiment and the difference of embodiment 2 are:By diode D7Positive pole and transformer lower port phase
Point even disconnects, by switching S6It is attached.With reference to Fig. 5, S is switched6Same connected by two MOSFET pipes is formed.
As shown in Figure 4 b, as switch S5Closure and switch S6During disconnection, secondary circuit is equivalent to six voltage doubling rectifing circuits.Such as
Shown in Fig. 4 c, as switch S5Disconnect and switch S6During closure, secondary circuit is equivalent to four voltage doubling rectifing circuits.As shown in figure 4d, when
Switch S5Disconnect and switch S6During disconnection, secondary circuit is equivalent to two voltage doubling rectifying circuit.Relative to the circuit shown in embodiment 2,
It can further widen the scope of output voltage.
The input voltage of circuit disclosed in the present embodiment is set to 390V, and resonant frequency is set to 100kHz, output voltage range
It is set to [260V, 950V].As shown in figure 8, corresponding switching frequency adjustable range is [85kHz, 118kHz].Relative to embodiment
For circuit in 2, output voltage range is wider, and switching frequency range is smaller, and switching frequency hunting range is closer to humorous
Shake a little, further ensure the high conversion efficiency of integrated circuit.
Embodiment 4
As shown in Figure 6 a, the present embodiment and the difference of embodiment 1 are:In diode D2Negative pole and diode D5At positive pole
Connect a switch S respectively7With switch S8.Wherein, S is switched7With switch S8Substituted by MOSFET pipes.As shown in Figure 6 b, when opening
Close S7Disconnect and switch S8During disconnection, secondary circuit is equivalent to four voltage doubling rectifing circuits.As fig. 6 c, as switch S7Closure and
Switch S8During disconnection, secondary circuit is equivalent to five voltage doubling rectifing circuits.Such as Fig. 6 d, as switch S7Closure and switch S8It is secondary during closure
Side circuit working state is equivalent to six voltage doubling rectifing circuits.Relative to the circuit shown in embodiment 2, in the scope one of output voltage
On the premise of sample, switching frequency range can further reduce.
The input voltage of circuit disclosed in the present embodiment is set to 390V, and resonant frequency is set to 100kHz, output voltage range
It is set to [250V, 420V].As shown in figure 9, corresponding working frequency adjustable range is [80kHz, 120kHz].Relative to embodiment
For circuit in 1, under output voltage range same case, switching frequency range is smaller, and switching frequency hunting range is more
Near resonance point, the high conversion efficiency of integrated circuit is further ensured.
Claims (8)
1. a kind of voltage doubling rectifing circuit, it is characterised in that including diode D1、D2、D3、D4、D5、D6、D7、D8, electric capacity C1、C2、C3、
C4、C5、C6, wherein:Electric capacity C1With electric capacity C4It is connected on diode D2Positive pole and diode D5Between negative pole, diode D1Negative pole with
Diode D2Positive pole is connected, diode D1Positive pole is connected to electric capacity C2Lower pin, electric capacity C2Upper pin and diode D3Positive pole
And diode D2Negative pole is connected, electric capacity C5Upper pin and electric capacity C2Lower pin is connected with the upper port of transformer, electric capacity C5's
Lower pin connection diode D5Positive pole and diode D6Negative pole, diode D4Positive pole and diode D5Negative pole is connected, diode D4
Negative pole and electric capacity C5Upper pin is connected, diode D7Positive pole and diode D8Negative pole is connected, and is connected on diode D3Positive pole and two
Pole pipe D6Between negative pole, electric capacity C3With electric capacity C6It is connected on diode D3Negative pole and diode D6Between positive pole, the lower end of transformer
Mouth connects electric capacity C simultaneously1Lower pin, diode D7Positive pole and electric capacity C3Lower pin, diode D3Negative pole is power supply positive output
End, diode D6Just extremely power supply negative output terminal.
2. a kind of voltage doubling rectifing circuit as claimed in claim 1, it is characterised in that the electric capacity C1Lower pin and the transformation
By switching S between device lower port5It is connected.
3. a kind of voltage doubling rectifing circuit as claimed in claim 2, it is characterised in that the switch S5By two MOSFET pipe strings
Connection is formed.
4. a kind of voltage doubling rectifing circuit as claimed in claim 2, it is characterised in that the diode D7Positive pole and the transformation
Device lower port is by switching S6It is connected.
5. a kind of voltage doubling rectifing circuit as claimed in claim 4, it is characterised in that the switch S6By two MOSFET pipe strings
Connection is formed.
6. a kind of voltage doubling rectifing circuit as claimed in claim 1, it is characterised in that in the diode D2Negative pole and the electricity
Hold C2Upper pin between tandem tap S7;
In the diode D5Positive pole and the electric capacity C5Lower pin between tandem tap S8。
7. a kind of voltage doubling rectifing circuit as claimed in claim 1, it is characterised in that the switch S7And the switch S8Adopt
Managed with single MOSFET.
8. a kind of resonance isolated converter, including transformer, transformer primary side circuit are full-bridge LLC resonance circuits, its feature exists
In transformer secondary circuit is the voltage doubling rectifing circuit as described in any one of claim 1,2,4,6.
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CN201710435858.4A CN107171576B (en) | 2017-06-09 | 2017-06-09 | Voltage-doubling rectifying circuit and application thereof in resonant isolation converter |
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CN201710435858.4A CN107171576B (en) | 2017-06-09 | 2017-06-09 | Voltage-doubling rectifying circuit and application thereof in resonant isolation converter |
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CN107171576A true CN107171576A (en) | 2017-09-15 |
CN107171576B CN107171576B (en) | 2019-12-31 |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109756142A (en) * | 2019-01-24 | 2019-05-14 | 上海科技大学 | Restructural H5 inverter bridge and single-direction and dual-direction controlled resonant converter based on the inverter bridge |
WO2021103415A1 (en) * | 2019-11-29 | 2021-06-03 | 山东科技大学 | High-gain quasi-resonance dc-dc converter based on voltage doubling rectifier circuit |
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JPH08308229A (en) * | 1995-05-01 | 1996-11-22 | Takeaki Kukihara | Distortionless rectifying circuit |
JPH11299241A (en) * | 1998-04-15 | 1999-10-29 | Meiji Natl Ind Co Ltd | Voltage doubler circuit |
CN201937936U (en) * | 2010-10-22 | 2011-08-17 | 陶荣泰 | Super energy-saving fluorescent lamp with long service life |
CN103887987A (en) * | 2014-04-17 | 2014-06-25 | 南京航空航天大学 | Multiple voltage-multiplying high-gain high-frequency rectification isolation converter based on switched capacitor |
CN103904904A (en) * | 2014-04-17 | 2014-07-02 | 南京航空航天大学 | Dual-voltage amplifying high-gain high-frequency rectifying isolating converter |
-
2017
- 2017-06-09 CN CN201710435858.4A patent/CN107171576B/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH08308229A (en) * | 1995-05-01 | 1996-11-22 | Takeaki Kukihara | Distortionless rectifying circuit |
JPH11299241A (en) * | 1998-04-15 | 1999-10-29 | Meiji Natl Ind Co Ltd | Voltage doubler circuit |
CN201937936U (en) * | 2010-10-22 | 2011-08-17 | 陶荣泰 | Super energy-saving fluorescent lamp with long service life |
CN103887987A (en) * | 2014-04-17 | 2014-06-25 | 南京航空航天大学 | Multiple voltage-multiplying high-gain high-frequency rectification isolation converter based on switched capacitor |
CN103904904A (en) * | 2014-04-17 | 2014-07-02 | 南京航空航天大学 | Dual-voltage amplifying high-gain high-frequency rectifying isolating converter |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109756142A (en) * | 2019-01-24 | 2019-05-14 | 上海科技大学 | Restructural H5 inverter bridge and single-direction and dual-direction controlled resonant converter based on the inverter bridge |
WO2021103415A1 (en) * | 2019-11-29 | 2021-06-03 | 山东科技大学 | High-gain quasi-resonance dc-dc converter based on voltage doubling rectifier circuit |
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