CN107769569A - A kind of half bridge flyback resonance circuit - Google Patents
A kind of half bridge flyback resonance circuit Download PDFInfo
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- CN107769569A CN107769569A CN201710951489.4A CN201710951489A CN107769569A CN 107769569 A CN107769569 A CN 107769569A CN 201710951489 A CN201710951489 A CN 201710951489A CN 107769569 A CN107769569 A CN 107769569A
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- Prior art keywords
- bridge arm
- flyback
- resonance circuit
- side winding
- negative pole
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Classifications
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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
- 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
- H02M3/33569—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 several active switching elements
-
- 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
- H02M1/00—Details of apparatus for conversion
- H02M1/0048—Circuits or arrangements for reducing losses
- H02M1/0054—Transistor switching losses
- H02M1/0058—Transistor switching losses by employing soft switching techniques, i.e. commutation of transistors when applied voltage is zero or when current flow is zero
-
- 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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
The invention discloses a kind of half bridge flyback resonance circuit, including：Half-bridge circuit, including upper bridge arm and lower bridge arm, the upper bridge arm and lower bridge arm are serially connected between the positive pole of input power and negative pole, and upper bridge arm and lower bridge arm have a switch element respectively, and the switch element in upper bridge arm and lower bridge arm is used for turn-on and turn-off in turn；Primary side input circuit, it is in parallel with lower bridge arm, including the primary side winding of energy-storage travelling wave tube and flyback transformer, the Same Name of Ends of primary side winding be connected between bridge arm and lower bridge arm, the different name end of primary side winding connects the negative pole of input power via energy-storage travelling wave tube；Flyback secondary circuit, for exporting suitable output voltage, vice-side winding including flyback transformer, the different name end of the vice-side winding is as the positive pole for exporting the output voltage, the Same Name of Ends of the vice-side winding is as the negative pole for exporting the output voltage, the present invention can improve efficiency, reduce cost, improve EMI, small-power power and accessory power supply especially suitable but that be not limited to high input voltage.
Description
Technical field
The present invention relates to field of switch power, more particularly to a kind of half bridge flyback resonance circuit.
Background technology
With the development of science and technology, the use of Switching Power Supply is throughout every field.In design small power switch electricity
During source, due to cost, this 3 topologys of topological prioritizing selection circuit of reversed excitation, forward converter or series resonant circuit, Fig. 1-
3 illustrate three kinds of topological structures successively, and these three topological structures have the defects of respective.
Circuit of reversed excitation has the disadvantage that：Switching tube is operated in hard switching state, and heating is more, and efficiency is low, it is necessary to switch
Guan Shangjia radiators；EMI effects are poor；The voltage stress that switching tube Q1 is born is high, typically to select rated voltage to be more than 2*Vin electricity
The switching tube of pressure.When input voltage is high (such as 1000V), it is difficult to find suitable switching tube.
Forward converter has the disadvantage that：Switching tube is operated in hard switching state, and heating is more, and efficiency is low, it is necessary to switch
Guan Shangjia radiators；EMI effects are poor；Need to increase reset winding or clamp circuit in addition；The voltage stress that switching tube Q1 is born
Height, rated voltage is typically selected to be more than the switching tube of 2*Vin voltages.When input voltage is high (such as 1000V), it is difficult to find
Suitable switching tube；During output multi-channel voltage, filter inductance will be added per road, and the cross regulation rate of each road voltage is poor.
Series resonant circuit has the disadvantage that：Special PWM is needed to send out ripple chip, power device is more, and cost is high, just
At last with being integrated with the series resonant circuit of resonant inductance, such as Fig. 4 similarly needs more power device, and cost is higher；It is defeated
When going out plurality of voltages, the cross regulation rate of each road voltage is poor.
The content of the invention
The technical problem to be solved in the present invention is, for the drawbacks described above of prior art, there is provided a kind of half bridge flyback is humorous
Shake circuit.
The technical solution adopted for the present invention to solve the technical problems is：A kind of half bridge flyback resonance circuit is constructed, including：
Half-bridge circuit, including upper bridge arm and lower bridge arm, the upper bridge arm and lower bridge arm be serially connected with input power positive pole and
Between negative pole, and the upper bridge arm and lower bridge arm have a switch element respectively, and the switch element in upper bridge arm and lower bridge arm is used for
Turn-on and turn-off in turn；
Primary side input circuit, it is in parallel with the lower bridge arm, including the primary side winding of energy-storage travelling wave tube and flyback transformer, primary side
The Same Name of Ends of winding is connected between bridge arm and lower bridge arm, and the different name end of primary side winding connects input power via energy-storage travelling wave tube
Negative pole；
Flyback secondary circuit, for exporting suitable output voltage, include the vice-side winding of flyback transformer, the secondary
The different name end of winding is electric as the output is exported as the positive pole for exporting the output voltage, the Same Name of Ends of the vice-side winding
The negative pole of pressure.
In half bridge flyback resonance circuit of the present invention, the flyback secondary circuit also includes the first diode, the
One electric capacity, first resistor, the positive pole of first diode connect the different name end of the vice-side winding, first diode
Negative pole is connected with the first end of the first resistor, the first end of first electric capacity, the second end of the first resistor, described
Second end of the first electric capacity connects the Same Name of Ends of the vice-side winding, and the first end of the first resistor is as access external loading
Positive pole, the negative pole of the second end of the first resistor as access external loading.
In half bridge flyback resonance circuit of the present invention, the half bridge flyback resonance circuit also includes current sample electricity
Resistance, one end of the current sampling resistor are connected to the common node of the energy-storage travelling wave tube and the lower bridge arm, and the electric current is adopted
The other end of sample resistance is connected to the negative pole of input power.
In half bridge flyback resonance circuit of the present invention, the quantity of the flyback secondary circuit is multiple and mutually only
It is vertical.
In half bridge flyback resonance circuit of the present invention, the primary circuit also includes the first inductance, and described first
The negative pole of the termination input power of the same name of inductance, the different name end of first inductance connect the primary side via the energy-storage travelling wave tube
The different name end of winding.
In half bridge flyback resonance circuit of the present invention, the energy-storage travelling wave tube is the second electric capacity.
In half bridge flyback resonance circuit of the present invention, the switch element is following one of any：Metal-oxide-semiconductor,
IGBT, triode, IGCT, controllable silicon.
In half bridge flyback resonance circuit of the present invention, the switch element is the connection in series-parallel group of following any element
Close：Metal-oxide-semiconductor, IGBT, triode, IGCT, controllable silicon.
In half bridge flyback resonance circuit of the present invention, the switch element for following any element with diode simultaneously
Connection：Metal-oxide-semiconductor, IGBT, triode, IGCT, controllable silicon.
In half bridge flyback resonance circuit of the present invention, in addition to it is serially connected between the positive pole of input power and negative pole
The 3rd electric capacity.
Implement the half bridge flyback resonance circuit of the present invention, have the advantages that：The present invention is circuit of reversed excitation and series connection
Resonance circuit integrates, and can improve efficiency, reduce cost, improves EMI, especially suitable but be not limited to high input voltage
Small-power power and accessory power supply.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
The embodiment of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
The accompanying drawing of offer obtains other accompanying drawings：
Fig. 1 is the structural representation of circuit of reversed excitation；
Fig. 2 is the structural representation of forward converter；
Fig. 3 is the structural representation of series resonant circuit；
Fig. 4 is the structural representation for the series resonant circuit for being integrated with resonant inductance；
Fig. 5 is the structural representation of the embodiment one of half bridge flyback resonance circuit of the present invention；
Fig. 6 is the structural representation of the embodiment two of half bridge flyback resonance circuit of the present invention；
Fig. 7 is the structural representation of the embodiment three of half bridge flyback resonance circuit of the present invention；
Fig. 8 is the structural representation of the example IV of half bridge flyback resonance circuit of the present invention.
Embodiment
For the ease of understanding the present invention, the present invention is described more fully below with reference to relevant drawings.In accompanying drawing
Give the exemplary embodiments of the present invention.But the present invention can realize in many different forms, however it is not limited to this paper institutes
The embodiment of description.On the contrary, the purpose for providing these embodiments is made to the disclosure more thorough and comprehensive.
It should be noted that " connected " or " connection ", not only include two entities being joined directly together, also include logical
Cross and be indirectly connected with other entities beneficial to improvement.
Unless otherwise defined, all of technologies and scientific terms used here by the article is with belonging to technical field of the invention
The implication that technical staff is generally understood that is identical.Term used in the description of the invention herein is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.
The term comprising ordinal number such as " first " that is used in this specification, " second " can be used for illustrating various inscapes,
But these inscapes are not limited by these terms.It is only that using the purpose of these terms and distinguishes an inscape
In other inscapes.For example, on the premise of the interest field of the present invention is not departed from, the first inscape can be named as the
Two inscapes, similarly, the second inscape can also be named as the first inscape.
The total thinking of the present invention is：A kind of half bridge flyback resonance circuit is constructed, it is humorous equivalent to circuit of reversed excitation and series connection
The circuit that shakes integrates, and has both effects concurrently, and half bridge flyback resonance circuit of the invention mainly includes half-bridge circuit, primary side
Input circuit, flyback secondary circuit three parts, wherein：
Half-bridge circuit, including upper bridge arm and lower bridge arm, the upper bridge arm and lower bridge arm be serially connected with input power positive pole and
Between negative pole, and the upper bridge arm and lower bridge arm have a switch element respectively, and the switch element in upper bridge arm and lower bridge arm is used for
Turn-on and turn-off in turn；
Primary side input circuit, it is in parallel with the lower bridge arm, including the primary side winding of energy-storage travelling wave tube and flyback transformer, primary side
The Same Name of Ends of winding is connected between bridge arm and lower bridge arm, and the different name end of primary side winding connects input power via energy-storage travelling wave tube
Negative pole；
Flyback secondary circuit, for exporting suitable output voltage, its structure and the secondary circuit of traditional circuit of reversed excitation
Structure is the same, includes the vice-side winding of flyback transformer, the different name end of the vice-side winding is as the output output voltage
Positive pole, the Same Name of Ends of the vice-side winding is as the negative pole for exporting the output voltage.
It should be noted that the quantity of the flyback secondary circuit is N number of and separate, N is just whole more than or equal to 1
Number.
In order to be better understood from above-mentioned technical proposal, below in conjunction with Figure of description and specific embodiment to upper
State technical scheme to be described in detail, it should be understood that the specific features in the embodiment of the present invention and embodiment are to the application
The detailed description of technical scheme, rather than the restriction to technical scheme, in the case where not conflicting, the present invention is implemented
Technical characteristic in example and embodiment can be mutually combined.
Embodiment one
With reference to figure 5, in embodiment one, half bridge flyback resonance circuit mainly includes half-bridge circuit 100, primary side input circuit
200th, flyback secondary circuit 300.Half-bridge circuit 100, including upper bridge arm and lower bridge arm.Primary side input circuit 200 and the lower bridge
Arm is in parallel, including energy-storage travelling wave tube and flyback transformer T1 primary side winding.The structure of flyback secondary circuit 300 and traditional flyback electricity
The structure of the secondary circuit on road is the same.
Specifically, electric capacity Cin is connected between the positive pole Vin and negative pole (i.e. the ground GND of input supply terminal) of input power,
The switch element of the upper bridge arm of half-bridge circuit 100 is specifically specifically adopted using the metal-oxide-semiconductor Q1 of N-type, the switch element of lower bridge arm
It is the metal-oxide-semiconductor Q2 of N-type.Metal-oxide-semiconductor Q1 drain electrode connects the positive pole of input power, metal-oxide-semiconductor Q1 source electrode and metal-oxide-semiconductor Q2 drain electrode
Connection, metal-oxide-semiconductor Q2 source electrode meet GND.
, can also instead IGBT, triode, crystalline substance it is understood that switch element is not limited to the element of metal-oxide-semiconductor class
The elements such as brake tube, controllable silicon, the connection in series-parallel combination of these elements is can also be, can also be these elements and diodes in parallel.
In addition, the model of element is not also limited, the simple deformation and equivalent substitute of element and its model are all in the protection of the present invention
Within the scope of.
In the present embodiment, primary side winding of the primary side input circuit 200 by flyback transformer T1 and the electricity as energy-storage travelling wave tube
Hold C1 to form, the Same Name of Ends of primary side winding is connected between bridge arm and lower bridge arm, i.e. metal-oxide-semiconductor Q1 source electrode, namely metal-oxide-semiconductor Q2
Drain electrode, the different name end of primary side winding meets GND via electric capacity C1.
In the present embodiment, flyback secondary circuit 300 includes flyback transformer T1 vice-side winding, diode D1, electric capacity
Cout, resistance R1.Diode D1 positive pole connects the different name end of the vice-side winding, and the of diode D1 negative pole and resistance R1
One end, electric capacity Cout first end connection, resistance R1 the second end, electric capacity Cout the second end connect the same of the vice-side winding
Name end, resistance R1 first end is as the positive pole Vout for accessing external loading, and resistance R1 the second end is as access external loading
Negative pole, i.e., load ground AGND.
The working method of the present embodiment is as follows：
1) Q2 shut-offs are controlled, while control Q1 to turn on, C1 and T1 leakage inductance resonance, and due to diode D1 voltage reversals,
In T1 primary side storage energy；
2) Q1 shut-offs are controlled, T1 leakage inductance makes electric current continuous, and electric current can realize soft open by Q2 parasitic diode, Q2
It is logical；
3) control Q2 is open-minded, and primary current is reverse, diode D1 voltage forward conductions, T1 secondary power output；
4) Q2 shut-offs are controlled, T1 leakage inductance makes electric current continuous, and electric current can realize soft open by Q1 parasitic diode, Q1
It is logical.
Embodiment two
With reference to figure 6, compared with embodiment one, difference is to add current sampling resistor R2 to switch electricity embodiment two
The feedback regulation of source.Specifically, metal-oxide-semiconductor Q1 drain electrode meets the positive pole Vin of input power, metal-oxide-semiconductor Q1 source electrode and metal-oxide-semiconductor Q2
Drain electrode connection, on the one hand metal-oxide-semiconductor Q2 source electrode passes through the different name end of electric capacity C1 connection flyback transformers T1 primary side winding, separately
On the one hand it is connected with current sampling resistor R2 one end, current sampling resistor R2 another termination GND.
Embodiment three
With reference to figure 7, for embodiment three compared with embodiment one, difference is that the quantity of the flyback secondary circuit is 2.Tool
Body, first flyback secondary circuit 300 includes the first vice-side winding, diode D1, electric capacity Cout, resistance R1, and second anti-
Swashing secondary circuit 300 ' includes the second vice-side winding, diode D1 ', electric capacity Cout ', resistance R1 '.
In first flyback secondary circuit 300, diode D1 positive pole connects the different of the first vice-side winding corresponding to it
Name end, diode D1 negative pole are connected with resistance R1 first end, electric capacity Cout first end, resistance R1 the second end, electric capacity
Cout the second end connects the Same Name of Ends of the first vice-side winding, and resistance R1 first end is as the positive pole for accessing external loading
Negative pole of Vout, resistance R1 the second end as access external loading, i.e. load ground AGND.
In second flyback secondary circuit 300 ', diode D1 ' positive pole connects the second vice-side winding corresponding to it
Different name end, diode D1 ' negative pole are connected with resistance R1 first end, electric capacity Cout ' first end, resistance R1 ' the second end,
Electric capacity Cout ' the second end connects the Same Name of Ends of the second vice-side winding, and resistance R1 first end is as accessing external loading just
Negative pole of pole Vout ', resistance R1 ' the second end as access external loading, i.e. load ground AGND '.
Example IV
With reference to figure 8, example IV is compared with embodiment one, and difference is that primary circuit also includes inductance L1, specifically：Tool
Body, metal-oxide-semiconductor Q1 drain electrode meets the positive pole Vin of input power, and metal-oxide-semiconductor Q1 source electrode is connected with metal-oxide-semiconductor Q2 drain electrode, metal-oxide-semiconductor
Q2 source electrode meets GND, and the Same Name of Ends of flyback transformer T1 primary side winding connects metal-oxide-semiconductor Q1 source electrode, flyback transformer T1's
The different name end of primary side winding is via electric capacity C1 connection inductance L1 different name end, inductance L1 termination GND of the same name.
It is understood that it can also increase on the basis of embodiment one in embodiment two, embodiment three, example IV
Any two even all so as to obtain more embodiments, these are all the letters for belonging to above example for the improvement of three
Monotropic shape, both falls within protection scope of the present invention.
To sum up, it is of the invention to have the following effects that：
1) special PWM is not needed to send out ripple chip, sending out ripple chip with common flyback PWM can be achieved；
2) power device is less, and cost is low.Equivalent to need to only increase on the basis of circuit of reversed excitation a switching tube Q2 and
One resonant capacitance C1, but fewer than circuit of reversed excitation absorbing circuit.And because primary voltage of transformer is low, the circle of transformer
The several half for needing circuit of reversed excitation transformer；
3) when secondary output multi-channel voltage, the cross regulation rate of each road voltage is preferable.Since when Q1 is turned on, T1 original
Side storage energy, the present invention also have the advantage of circuit of reversed excitation in cross regulation rate on this point；
4) switching tube is operated in Sofe Switch state, and heating is few, efficiency high.When the present invention is in small-power power or accessory power supply
Above in use, need not all add radiator on switching tube；
5) because switching tube is operated in Sofe Switch state, EMI effects are also preferable, it is possible to reduce the cost of EMC filter circuit；
6) reset winding or clamper absorbing circuit need not be increased in addition relative to forward converter, the present invention；
7) absorbing circuit need not be increased in addition relative to circuit of reversed excitation, the present invention, and make full use of the leakage inductance of transformer,
Allow the coiling of transformer simpler, it is not necessary to the winding method of complexity to reduce the leakage inductance of transformer；
8) voltage stress that switching tube Q1, Q2 is born is low, typically only needs to select the switch of rated voltage 1.1*Vin voltages
Pipe.When input voltage is high (such as 1000V), also there are many suitable switching tubes to select.
Embodiments of the invention are described above in conjunction with accompanying drawing, but the invention is not limited in above-mentioned specific
Embodiment, above-mentioned embodiment is only schematical, rather than restricted, one of ordinary skill in the art
Under the enlightenment of the present invention, in the case of present inventive concept and scope of the claimed protection is not departed from, it can also make a lot
Form, these are belonged within the protection of the present invention.
Claims (10)
- A kind of 1. half bridge flyback resonance circuit, it is characterised in that including：Half-bridge circuit, including upper bridge arm and lower bridge arm, the upper bridge arm and lower bridge arm are serially connected with the positive pole and negative pole of input power Between, and the upper bridge arm and lower bridge arm have a switch element respectively, the switch element in upper bridge arm and lower bridge arm is used in turn Turn-on and turn-off；Primary side input circuit, it is in parallel with the lower bridge arm, including the primary side winding of energy-storage travelling wave tube and flyback transformer, the primary side The Same Name of Ends of winding is connected between the upper bridge arm and the lower bridge arm, and the different name end of the primary side winding is via the energy storage Element connects the negative pole of the input power；Flyback secondary circuit, for exporting suitable output voltage, include the vice-side winding of the flyback transformer, the secondary The different name end of winding is electric as the output is exported as the positive pole for exporting the output voltage, the Same Name of Ends of the vice-side winding The negative pole of pressure.
- 2. half bridge flyback resonance circuit according to claim 1, it is characterised in that the flyback secondary circuit also includes the One diode, the first electric capacity, first resistor, the positive pole of first diode connects the different name end of the vice-side winding, described The negative pole of first diode is connected with the first end of the first resistor, the first end of first electric capacity, the first resistor The second end, the second end of first electric capacity connect the Same Name of Ends of the vice-side winding, the first end of the first resistor is made To access the positive pole of external loading, the second end of the first resistor is as the negative pole for accessing external loading.
- 3. half bridge flyback resonance circuit according to claim 1, it is characterised in that the half bridge flyback resonance circuit also wraps Current sampling resistor is included, one end of the current sampling resistor is connected to the public section of the energy-storage travelling wave tube and the lower bridge arm Point, the other end of the current sampling resistor are connected to the negative pole of the input power.
- 4. half bridge flyback resonance circuit according to claim 1, it is characterised in that the quantity of the flyback secondary circuit is It is multiple and separate.
- 5. half bridge flyback resonance circuit according to claim 1, it is characterised in that the primary circuit also includes the first electricity Sense, the Same Name of Ends of first inductance connect the negative pole of the input power, and the different name end of first inductance is via the storage Energy element connects the different name end of the primary side winding.
- 6. half bridge flyback resonance circuit according to claim 1, it is characterised in that the energy-storage travelling wave tube is the second electric capacity.
- 7. half bridge flyback resonance circuit according to claim 1, it is characterised in that the switch element for it is following it is any it One：Metal-oxide-semiconductor, IGBT, triode, IGCT, controllable silicon.
- 8. half bridge flyback resonance circuit according to claim 1, it is characterised in that the switch element is following any member The connection in series-parallel combination of part：Metal-oxide-semiconductor, IGBT, triode, IGCT, controllable silicon.
- 9. half bridge flyback resonance circuit according to claim 1, it is characterised in that the switch element is following any member Part and diodes in parallel：Metal-oxide-semiconductor, IGBT, triode, IGCT, controllable silicon.
- 10. half bridge flyback resonance circuit according to claim 1, it is characterised in that the half bridge flyback resonance circuit is also Including the 3rd electric capacity being serially connected between the positive pole and negative pole of the input power.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710951489.4A CN107769569A (en) | 2017-10-13 | 2017-10-13 | A kind of half bridge flyback resonance circuit |
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| CN201710951489.4A CN107769569A (en) | 2017-10-13 | 2017-10-13 | A kind of half bridge flyback resonance circuit |
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Cited By (9)
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| CN108539988A (en) * | 2018-05-18 | 2018-09-14 | 广州金升阳科技有限公司 | A kind of converter and its control method |
| CN110943609A (en) * | 2018-09-25 | 2020-03-31 | 台达电子工业股份有限公司 | Power module |
| CN111181405A (en) * | 2020-01-15 | 2020-05-19 | 欣旺达电子股份有限公司 | Half-bridge LLC resonant circuit and switching power supply |
| CN112198358A (en) * | 2020-09-07 | 2021-01-08 | 上海军陶电源设备有限公司 | Flyback converter input voltage secondary side detection circuit |
| CN112865549A (en) * | 2021-04-12 | 2021-05-28 | 东南大学 | Constant current control method of asymmetric half-bridge flyback converter with primary side modulation |
| WO2022127352A1 (en) * | 2020-12-14 | 2022-06-23 | 深圳市华浩德电子有限公司 | Llc resonant topology control circuit based on flyback chip |
| WO2022170574A1 (en) * | 2021-02-10 | 2022-08-18 | 华为数字能源技术有限公司 | Direct-current converter, electronic device and charger |
| WO2022188405A1 (en) * | 2021-03-09 | 2022-09-15 | 华为数字能源技术有限公司 | Asymmetric half-bridge flyback converter and power supply system |
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Application publication date: 20180306 |