CN109660113A - A kind of resonance drive circuit - Google Patents
A kind of resonance drive circuit Download PDFInfo
- Publication number
- CN109660113A CN109660113A CN201910039750.2A CN201910039750A CN109660113A CN 109660113 A CN109660113 A CN 109660113A CN 201910039750 A CN201910039750 A CN 201910039750A CN 109660113 A CN109660113 A CN 109660113A
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- nmos tube
- tube
- capacitor
- transformer
- nmos
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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
- H02M1/00—Details of apparatus for conversion
- H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
-
- 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
-
- 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)
- Inverter Devices (AREA)
Abstract
The invention discloses a kind of resonance drive circuits, are related to power conversion field.It include: transformer, primary circuit, secondary circuit, the first PWM input terminal and the 2nd PWM input terminal, the primary circuit includes: first capacitor, the second capacitor, third capacitor, first diode, the second diode, the first NMOS tube, the second NMOS tube, the first PMOS tube and the second PMOS tube.Resonance drive circuit provided by the invention realizes recycling for driving energy, has the advantages that drive loss is low, drive current waveform frequency spectrum is single, is conducive to EMC Design, is suitable for MHz grades of switch converters.
Description
Technical field
The present invention relates to power conversion field more particularly to a kind of resonance drive circuits.
Background technique
With the progress of device technology, field control type device is widely used in power conversion field, is corresponding to it, and occurs
Miscellaneous driving circuit with voltage source property.
However, when switching frequency is lower, loss the accounting in converter total losses of above two type driving circuit
More lower than, when switching frequency is promoted to hundreds of kHz and MHz or more, drive loss accounting is very high, has become restriction transformation
The key factor that device power density is further promoted.
Summary of the invention
The technical problem to be solved by the present invention is in view of the deficiencies of the prior art, provide a kind of resonance drive circuit.
The technical scheme to solve the above technical problems is that
A kind of resonance drive circuit, comprising: transformer, primary circuit, secondary circuit, the first PWM input terminal and the 2nd PWM
Input terminal, the primary circuit include: first capacitor, the second capacitor, third capacitor, first diode, the second diode, first
NMOS tube, the second NMOS tube, the first PMOS tube and the second PMOS tube, in which:
The first PWM input terminal is connect with the end g at the end g of first PMOS tube and first NMOS tube respectively,
The end s of first PMOS tube is connect with the anode of the end VCC, one end of first capacitor and first diode respectively, and described first
The end d of PMOS tube is connect with the end d of one end of second capacitor and first NMOS tube respectively, first NMOS tube
The end the s cathode connect and ground with the other end of the first capacitor and second diode respectively, second capacitor
The other end is connect with the Same Name of Ends of the primary coil of the transformer；
The 2nd PWM input terminal is connect with the end g at the end g of second PMOS tube and second NMOS tube respectively,
The end s of second PMOS tube is connect with the cathode of the first diode, and the end d of second PMOS tube is respectively with described
One end of three capacitors is connected with the end d of second NMOS tube, and the end s of second NMOS tube and second diode are just
Pole connection, the other end of the third capacitor are connect with the different name end of the primary coil of the transformer.
The beneficial effects of the present invention are: resonance drive circuit provided by the invention, passes through the first PWM input terminal and second
The PWM input terminal pwm signal identical or opposite to primary circuit input polarity, can make primary circuit form bridge circuit or energy
Cycling circuit, and then the resonance of the switching tube grid capacitance in driving transformer leakage inductance and secondary circuit are measured, driving energy is realized
Amount recycles, and has the advantages that drive loss is low, drive current waveform frequency spectrum is single, is conducive to EMC Design, is applicable in
In MHz grades of switch converters.
The another technical solution that the present invention solves above-mentioned technical problem is as follows:
A kind of switch converters, including resonance drive circuit as described in the above technical scheme.
The advantages of additional aspect of the invention, will be set forth in part in the description, and will partially become from the following description
It obtains obviously, or practice is recognized through the invention.
Detailed description of the invention
Fig. 1 is a kind of structural framing schematic diagram that the embodiment of resonance drive circuit provides of the present invention；
Fig. 2 is a kind of waveform diagram that the embodiment of resonance drive circuit provides of the present invention.
Specific embodiment
The principle and features of the present invention will be described below with reference to the accompanying drawings, and illustrated embodiment is served only for explaining the present invention,
It is not intended to limit the scope of the present invention.
As shown in Figure 1, for a kind of structural framing schematic diagram that the embodiment of resonance drive circuit provides of the present invention, the circuit
It include: transformer T, primary circuit 1, secondary circuit 2, the first PWM input terminal 3 and the 2nd PWM input terminal 4, primary circuit 1 is wrapped
It includes: first capacitor C1, the second capacitor C2, third capacitor C3, first diode D1, the second diode D2, the first NMOS tube Q3,
Two NMOS tube Q4, the first PMOS tube Q1 and the second PMOS tube Q2, in which:
First PWM input terminal 3 is connect with the end g at the end g of the first PMOS tube Q1 and the first NMOS tube Q3 respectively, the first PMOS
The end s of pipe Q1 is connect with the anode of the end VCC, one end of first capacitor C1 and first diode D1 respectively, the d of the first PMOS tube Q1
End is connect with the end d of one end of the second capacitor C2 and the first NMOS tube Q3 respectively, and the end s of the first NMOS tube Q3 is electric with first respectively
Hold the other end of C1 and the cathode connect and ground of the second diode D2, the other end of the second capacitor C2 and the primary of transformer T
The Same Name of Ends of coil connects；
2nd PWM input terminal 4 is connect with the end g at the end g of the second PMOS tube Q2 and the second NMOS tube Q4 respectively, the 2nd PMOS
The end s of pipe Q2 is connect with the cathode of first diode D1, the end d of the second PMOS tube Q2 respectively with one end of third capacitor C3 and
The end d of two NMOS tube Q4 connects, and the end s of the second NMOS tube Q4 is connect with the anode of the second diode D2, and third capacitor C3's is another
One end is connect with the different name end of the primary coil of transformer T.
Resonance drive circuit provided in this embodiment, it is electric to primary side by the first PWM input terminal and the 2nd PWM input terminal 4
Road 1 inputs the identical or opposite pwm signal of polarity, primary circuit 1 can be made to form bridge circuit or energy circulation circuit, in turn
The resonance of switching tube grid capacitance in driving transformer T leakage inductance and secondary circuit 2, realizes recycling for driving energy,
Have the advantages that drive loss is low, drive current waveform frequency spectrum is single, be conducive to EMC Design, is suitable for MHz grades of switches and becomes
Parallel operation.
Optionally, in some embodiments, secondary circuit 2 includes: third NMOS tube Q5, the 4th NMOS tube Q6, the 5th
NMOS tube Q7, the 6th NMOS tube Q8, the 7th NMOS tube Q9 and the 8th NMOS tube Q10, in which:
The positive end d with the end g of third NMOS tube Q5, the 4th NMOS tube Q6 respectively of the first of the secondary coil of transformer T
Connected with the end g of the 5th NMOS tube Q7, the first cathode of the secondary coil of transformer T respectively with the end d of third NMOS tube Q5 and
The end g of 4th NMOS tube Q6 connects, the end s of third NMOS tube Q5 respectively with the end s of the 4th NMOS tube Q6, the 5th NMOS tube Q7
The end s is connected with the end d of the 8th NMOS tube Q10；
Second cathode of the secondary coil of the transformer T end d with the end g of the 6th NMOS tube Q8, the 7th NMOS tube Q9 respectively
Connected with the end g of the 8th NMOS tube Q10, the secondary coil of transformer T second anode respectively with the end d of the 6th NMOS tube Q8 and
The end g of 7th NMOS tube Q9 connects, the end s of the 6th NMOS tube Q8 respectively with the end s of the 7th NMOS tube Q9 and the 8th NMOS tube Q10
The end s connection.
The workflow of resonance drive circuit provided by the invention is further described below.
First PWM input terminal 3 and the 2nd PWM input terminal 4 input two-way drive input waveform, the big portion of waveform of the two input
Timesharing is intermediate polarity on the contrary, short period polarity is identical, and the specific time can be arranged according to actual needs.
When the signal polarity that the first PWM input terminal 3 and the 2nd PWM input terminal 4 input is opposite, the first PMOS tube Q1, the
Two PMOS tube Q2, the first NMOS tube Q3 and the second NMOS tube Q4 constitute bridge circuit, as the first PWM input terminal 3 and the 2nd PWM
When the signal polarity that input terminal 4 inputs is identical, the first PMOS tube Q1, first diode D1 and the second PMOS tube Q2 constitute one group
Energy circulation circuit, the first NMOS tube Q3, the second diode D2 and the second NMOS tube Q4 constitute another group of energy circulation circuit.
Specifically:
When 3 input high level signal of the first PWM input terminal, 4 input low level signal of the 2nd PWM input terminal, the one or two
Pole pipe D1, the second PMOS tube Q2 and the first NMOS tube Q3 conducting, transformer T armature winding a point are negative polarity to b point, it is secondary around
Group c point is negative polarity to d point, and secondary windings e point is positive polarity to f point, and the 5th NMOS tube Q7 shutdown, the 8th NMOS tube Q10 are led
It is logical；
When 3 input high level signal of the first PWM input terminal, 4 input high level signal of the 2nd PWM input terminal, second
NMOS tube Q4, the second diode D2 and the first NMOS tube Q3 conducting, the 8th NMOS tube Q10 grid capacitance and transformer T leakage inductance are humorous
Vibration, the decline of the 8th NMOS tube Q10 grid capacitance voltage, transformer T leakage inductance electric current rises, when the 8th NMOS tube Q10 grid capacitance
When voltage drops to the 6th NMOS tube Q8 turn-on threshold voltage or less, transformer T leakage inductance and the 8th NMOS tube Q10 grid capacitance are humorous
Vibration process terminates, and transformer T leakage inductance and the 5th NMOS tube Q7 grid capacitance start resonance, until transformer T leakage inductance electric current is reduced to
0, it thereby realizes using transformer T leakage inductance as medium, the 8th NMOS tube Q10 grid capacitance charge is to the 5th NMOS tube Q7 grid
The transfer of capacitor, ideally, the process are lossless；
When 3 input low level signal of the first PWM input terminal, 4 input high level signal of the 2nd PWM input terminal, first
PMOS tube Q1, the second NMOS tube Q4 and the second diode D2 conducting, transformer T armature winding a point is positive polarity to b point, secondary
Winding c point is positive polarity to d point, and secondary windings e point is negative polarity, the 5th NMOS tube Q7 conducting, the 8th NMOS tube Q10 to f point
Shutdown；
When 3 input low level signal of the first PWM input terminal, 4 input low level signal of the 2nd PWM input terminal, first
PMOS tube Q1, first diode D1 and the second PMOS tube Q2 conducting, the 5th NMOS tube Q7 grid capacitance and transformer T leakage inductance are humorous
Vibration, the decline of the 5th NMOS tube Q7 grid capacitance voltage, transformer T leakage inductance electric current rise, when the 5th NMOS tube Q7 grid capacitance electricity
When pressure drops to Q6 turn-on threshold voltage or less, transformer T leakage inductance terminates with the 5th NMOS tube Q7 grid capacitance resonant process, becomes
Depressor T leakage inductance and the 8th NMOS tube Q10 grid capacitance start resonance, until transformer T leakage inductance electric current is reduced to 0, thus realize
Using transformer T leakage inductance as medium, transfer of the 5th NMOS tube Q7 grid capacitance charge to the 8th NMOS tube Q10 grid capacitance,
Ideally, which is lossless.
Fig. 2 is a kind of waveform diagram that the embodiment of resonance drive circuit provides of the present invention, totally 5 waveform diagrams, from upper
It arrives down successively are as follows: input voltage waveform, the transformer T of the input voltage waveform of the first PWM input terminal 3, the 2nd PWM input terminal 4
The current waveform at the end primary coil a-b, the 5th NMOS tube Q7 the end g-s output voltage waveforms and the 8th NMOS tube Q10
The end g-s output voltage waveforms, it is successively t0, t1, t2, t3, t4 and t5, the longitudinal axis is that the horizontal axis of each waveform diagram, which is time t,
Voltage or electric current, below with reference to Fig. 2, invention is further explained.
As shown in Fig. 2, the waveform of the first PWM input terminal 3 input is positive when the time is 0~t1, and when t1~t5, waveform
It is negative, when the time is 0~t0, the waveform of the 2nd PWM input terminal 4 input is negative, and when t0~t3, waveform is positive.
In t0~t2, the time is very short, and the polarity of wave of two PWM input terminals input is identical, and waveform is all positive, transformer
The electric current at the end primary coil a to b of T is positive, and in t0~t1, resonance rises, the decline of Q10 grid voltage resonance, t1 moment Q10
The energy of grid capacitance storage is fully transferred to the leakage inductance of transformer T, and the primary current of transformer T reaches maximum value；?
Resonance declines when t1~t2, and Q7 grid voltage resonance rises, and the leakage inductance energy of t2 moment transformer T is fully transferred to Q7 grid electricity
Hold, the primary current of transformer T is reduced to 0.
Similarly, in t3~t5, the polarity of wave of two PWM input terminals input is identical, and waveform is all negative, transformer T's
The electric current at the end primary coil a to b is negative, and in t3~t4, resonance declines, and in t4~t5, resonance rises；5th NMOS tube Q7's
The output voltage waveforms resonance of the output voltage waveforms linear decline at the end g-s, the end g-s of the 8th NMOS tube Q10 rises.
It should be understood that the resonance drive circuit in above-described embodiment is designed for bridge circuit, driving energy is the 5th
It is converted between NMOS tube Q7 and the 8th NMOS tube Q10.If it is single-end circuit, above-described embodiment can be further improved,
In the 5th NMOS tube Q7, the 8th NMOS tube Q10 shutdown, driving energy is allowed to be fed back to driving power, or be stored in inductance or electricity
Rong Zhong, realizes the recycling of driving energy, to reduce drive loss, improves transducer effciency.
It should be noted that the phase shift angle of driving signal depend on driving transformer T leakage inductance and the 5th NMOS tube Q7 and
The resonance frequency of the grid capacitance of 8th NMOS tube Q10 should control parasitic parameter in design driven transformer T, really
It protects harmonic period and meets converter requirement.
Resonance drive circuit provided by the above embodiment passes through driving transformer T leakage inductance and the 5th NMOS tube Q7 and the 8th
The resonance of the grid capacitance of NMOS tube Q10 realizes recycling for driving energy, and increases reversed resistance on resonant groove path
Disconnected diode can ensure the unicity of energy transmission to reduce control difficulty.
In other embodiments of the invention, a kind of switch converters are also provided, including such as institute any in above-described embodiment
The resonance drive circuit stated.
Reader should be understood that in the description of this specification reference term " one embodiment ", " is shown " some embodiments "
The description of example ", " specific example " or " some examples " etc. mean specific features described in conjunction with this embodiment or example, structure,
Material or feature are included at least one embodiment or example of the invention.In the present specification, above-mentioned term is shown
The statement of meaning property need not be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described
It may be combined in any suitable manner in any one or more of the embodiments or examples.In addition, without conflicting with each other, this
The technical staff in field can be by the spy of different embodiments or examples described in this specification and different embodiments or examples
Sign is combined.
It is apparent to those skilled in the art that for convenience of description and succinctly, the dress of foregoing description
The specific work process with unit is set, can refer to corresponding processes in the foregoing method embodiment, details are not described herein.
In several embodiments provided herein, it should be understood that disclosed device and method can pass through it
Its mode is realized.For example, the apparatus embodiments described above are merely exemplary, for example, the division of unit, only
A kind of logical function partition, there may be another division manner in actual implementation, for example, multiple units or components can combine or
Person is desirably integrated into another system, or some features can be ignored or not executed.
Unit may or may not be physically separated as illustrated by the separation member, shown as a unit
Component may or may not be physical unit, it can and it is in one place, or may be distributed over multiple networks
On unit.It can select some or all of unit therein according to the actual needs to realize the mesh of the embodiment of the present invention
's.
More than, only a specific embodiment of the invention, but scope of protection of the present invention is not limited thereto, and it is any to be familiar with
Those skilled in the art in the technical scope disclosed by the present invention, can readily occur in various equivalent modifications or substitutions,
These modifications or substitutions should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be wanted with right
Subject to the protection scope asked.
Claims (3)
1. a kind of resonance drive circuit characterized by comprising transformer (T), primary circuit (1), secondary circuit (2), first
PWM input terminal (3) and the 2nd PWM input terminal (4), the primary circuit (1) include: first capacitor (C1), the second capacitor (C2),
Third capacitor (C3), first diode (D1), the second diode (D2), the first NMOS tube (Q3), the second NMOS tube (Q4), first
PMOS tube (Q1) and the second PMOS tube (Q2), in which:
The first PWM input terminal (3) g with the end g of first PMOS tube (Q1) and first NMOS tube (Q3) respectively
End connection, the end s of first PMOS tube (Q1) respectively with the end VCC, one end of first capacitor (C1) and first diode (D1)
Anode connection, the end d of first PMOS tube (Q1) respectively with one end of second capacitor (C2) and the first NMOS
Manage the end the d connection of (Q3), the end s of first NMOS tube (Q3) respectively with the other end of the first capacitor (C1) and described the
The cathode connect and ground of two diodes (D2), the other end of second capacitor (C2) and the primary line of the transformer (T)
The Same Name of Ends of circle connects；
The 2nd PWM input terminal (4) g with the end g of second PMOS tube (Q2) and second NMOS tube (Q4) respectively
End connection, the end s of second PMOS tube (Q2) are connect with the cathode of the first diode (D1), second PMOS tube
(Q2) the end d is connect with the end d of one end of the third capacitor (C3) and second NMOS tube (Q4) respectively, and described second
The anode of the end s of NMOS tube (Q4) and second diode (D2) is connect, the other end of the third capacitor (C3) with it is described
The different name end of the primary coil of transformer (T) connects.
2. resonance drive circuit according to claim 1, which is characterized in that the secondary circuit (2) includes: the 3rd NMOS
Manage (Q5), the 4th NMOS tube (Q6), the 5th NMOS tube (Q7), the 6th NMOS tube (Q8), the 7th NMOS tube (Q9) and the 8th NMOS
It manages (Q10), in which:
The secondary coil of the transformer (T) first anode respectively with the end g of the third NMOS tube (Q5), the described 4th
The end d of NMOS tube (Q6) is connected with the end g of the 5th NMOS tube (Q7), and the first of the secondary coil of the transformer (T) is negative
Pole is connect with the end g at the end d of the third NMOS tube (Q5) and the 4th NMOS tube (Q6) respectively, the third NMOS tube
(Q5) the end s respectively with the end s of the 4th NMOS tube (Q6), the end s of the 5th NMOS tube (Q7) and the 8th NMOS tube (Q10)
The connection of the end d；
Second cathode of the secondary coil of the transformer (T) respectively with the end g of the 6th NMOS tube (Q8), the described 7th
The end d of NMOS tube (Q9) is connected with the end g of the 8th NMOS tube (Q10), and the second of the secondary coil of the transformer (T) is just
Pole is connect with the end d of the 6th NMOS tube (Q8) and the end the 7th NMOS tube (Q9) g respectively, the 6th NMOS tube (Q8)
The end s connect respectively with the end s at the end s of the 7th NMOS tube (Q9) and the 8th NMOS tube (Q10).
3. a kind of switch converters, which is characterized in that including such as above-mentioned resonance drive circuit of any of claims 1 or 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910039750.2A CN109660113A (en) | 2019-01-16 | 2019-01-16 | A kind of resonance drive circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910039750.2A CN109660113A (en) | 2019-01-16 | 2019-01-16 | A kind of resonance drive circuit |
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| Publication Number | Publication Date |
|---|---|
| CN109660113A true CN109660113A (en) | 2019-04-19 |
Family
ID=66118851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910039750.2A Pending CN109660113A (en) | 2019-01-16 | 2019-01-16 | A kind of resonance drive circuit |
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| CN (1) | CN109660113A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111917306A (en) * | 2020-08-21 | 2020-11-10 | 苏州浪潮智能科技有限公司 | Power switch switching drive circuit and method based on LLC |
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| CN111917306A (en) * | 2020-08-21 | 2020-11-10 | 苏州浪潮智能科技有限公司 | Power switch switching drive circuit and method based on LLC |
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