CN107370404A - Integrated PFC high voltage half-bridge resonance synchronous rectification AC/DC power modules - Google Patents
Integrated PFC high voltage half-bridge resonance synchronous rectification AC/DC power modules Download PDFInfo
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- CN107370404A CN107370404A CN201710676174.3A CN201710676174A CN107370404A CN 107370404 A CN107370404 A CN 107370404A CN 201710676174 A CN201710676174 A CN 201710676174A CN 107370404 A CN107370404 A CN 107370404A
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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
- 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
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M7/219—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only in a bridge configuration
-
- 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
- H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
- H02M1/4208—Arrangements for improving power factor of AC input
- H02M1/4241—Arrangements for improving power factor of AC input using a resonant converter
-
- 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
- H02M1/44—Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
-
- 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
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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
- 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
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M7/219—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only in a bridge configuration
- H02M7/2195—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only in a bridge configuration the switches being synchronously commutated at the same frequency of the AC input voltage
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Dc-Dc Converters (AREA)
- Rectifiers (AREA)
Abstract
The invention discloses a kind of integrated PFC high voltage half-bridges resonance synchronous rectification AC/DC power modules, mainly by inputting anti-interference and current rectifying and wave filtering circuit, PFC（PFC）IC circuits, circuit of synchronous rectification, filter circuit, mu balanced circuit, auxiliary power supply circuit and the integrated brand-new modularized design of protection circuit are reset with control circuit, LLC high voltage half-bridges resonance and control circuit, dual quick disconnection intelligent control circuit, voltage detecting system.Have the characteristics that small volume, integrated level are high, in light weight, reliability is high, efficiency high, wide adaptation range.The AC/DC power modules are by the mutual cooperations of multiple advanced circuits, while overcome traditional circuit the defects of, optimization defencive function, perfectly realize the quadratic transformation of brand-new modularization AC/DC, DC/DC.
Description
Technical field
The present invention relates to a kind of integrated PFC high voltage half-bridges resonance synchronous rectification AC/DC power modules, belong to AC/DC power supplys
Building block technique field.
Background technology
Under normal circumstances, the AC/DC power supplys of standard have two kinds of connected modes, one kind be by Industrial Frequency Transformer transformation, then
Become required voltage by current rectifying and wave filtering circuit, mu balanced circuit, another kind is that alternating voltage is directly over rectifier bridge rectification again
After filtering, DC/DC converters become required voltage, also to take multiple modes in parallel to solve during output power
Certainly.But all there is circuit engineering is backward, volume is big, peripheral component is more, conversion efficiency is low, Electro Magnetic Compatibility for these circuits
Difference, the defects of cost is high.
The content of the invention
The present invention integrates precisely in order to solving one kind that above-mentioned technical problem is combined and designed using a variety of advanced circuits
PFC high voltage half-bridge resonance synchronous rectification AC/DC power modules.
The technical solution adopted for the present invention to solve the technical problems is：
A kind of integrated PFC high voltage half-bridges resonance synchronous rectification AC/DC power modules, including input, output end, in addition to input
It is anti-jamming circuit, current rectifying and wave filtering circuit, PFC and control circuit, LLC high voltage half-bridges resonance and control circuit, dual
It is quick disconnect intelligent control circuit, voltage detecting system resets IC circuits, circuit of synchronous rectification, filter circuit, mu balanced circuit, auxiliary
Help power supply circuit, feedback and protection circuit, the module of whole becoming one of circuit.
Further, the input anti-jamming circuit is multistage LC and π type filter circuits, input anti-jamming circuit with it is defeated
Enter between two terminals at end respectively one fuse of series connection.
Further, the PFC and control circuit include the first input diode, the second input diode,
Protection diode, booster diode, the first inductance, first switch pipe, the first electric capacity, power factor FPC controllers, described first
Input diode is in parallel with the second input diode, and the first input diode, the positive pole of the second input diode are both connected to defeated
Enter between anti-jamming circuit and current rectifying and wave filtering circuit, the first input diode, the negative pole of the second input diode are all connected with power
Factor FPC controllers, the first inductance are connected whole with the circuit on one side that protection diode composes in parallel after being connected with booster diode
Filter circuit is flowed, the other end connects one end of the first electric capacity, the other end connection power factor FPC controllers of the first electric capacity.
Wherein, the PFC also includes disappear peak circuit, principal voltage detection circuit, power down protection with control circuit
Circuit.
Further, the LLC high voltage half-bridges resonance includes high voltage half-bridge resonant controller with control circuit, flash is opened
Pass, lower edge switch, series resonance inductor, transformer, series resonant capacitance, the first controlling switch pipe, the second controlling switch pipe are high
Side switchs and lower edge switch composition square-wave generator, square-wave generator connection high voltage half-bridge resonant controller, series resonance inductor
The primary of connection transformer is connected with one end after series resonant capacitance parallel connection, the other end of series resonance inductor is connected to flash and opened
Close between lower edge switch, the other end connection lower edge switch of series resonant capacitance, the first controlling switch pipe, the second controlling switch
Pipe collectively constitutes rectifying and wave-filtering network with output filter circuit, and the first controlling switch pipe, the second controlling switch pipe are connected to
The both ends of transformer secondary output.
Wherein, the first controlling switch pipe, the second controlling switch pipe are metal-oxide-semiconductor.
Wherein, the dual quick disconnection intelligent control circuit includes quick disconnection intelligent controller, the quick disconnection
Intelligent controller is used to drive the first controlling switch pipe, the correction of the second controlling switch pipe synchronization high voltage half-bridge resonant controller.
Further, the voltage detecting system, which resets IC circuits, includes one kind in non-essential resistance or external capacitive, institute
State voltage detecting system and reset IC circuits also including voltage detecting replacement controller.
The beneficial effects of the present invention are integrated PFC high voltage half-bridges resonance synchronous rectification AC/DC power supplys provided by the invention
Module, compared with prior art, there is advantages below：
Integrated brand-new modularized design, perfectly realize the quadratic transformation of brand-new modularization AC/DC, DC/DC.
PFC（PFC）There is continuous current operator scheme, wide input voltage range, without dynamic with control circuit
Response current distorts, is accurately judged to rotection thresholds, quickly exports dynamic response, switching frequency is adjustable, open loop is protected, maximum
Dutycycle is 95%（Representative value）Etc. characteristic.
High voltage resonant controller is protected with 50% dutycycle, VFC resonance oscillation semi-bridge, higher working frequency, power down
Shield, soft start, it can gently load the characteristics such as burst mode fast reaction.
The dual quick intelligent control circuit that disconnects has that low standby power loss, power supply voltage range are wide, quickly disconnect total delay
Time is short, reverse-current protection, high workload frequency error factor, underloading quiescent current is small, supports the characteristics such as CCM operator schemes.
Voltage detecting system, which resets IC circuits, has small capacitances capacity big time delay, Low threshold operating voltage, using model
Enclose the characteristic such as wide.
Main transformer is secondary to recover two poles using the power MOS pipe of low on-resistance using circuit of synchronous rectification instead of fast
Pipe, rectifier loss is reduced, improve efficiency.
Brief description of the drawings
The AC/DC Power converts being made up of transformer transformation of Fig. 1 standards.
The AC/DC Power converts by high pressure DC/DC module compositions of Fig. 2 standards.
Fig. 3 is AC/DC power modules general principle block diagram of the present invention.
Fig. 4 is AC/DC power modules outline drawing of the present invention.
Fig. 5 is Fig. 4 top view.
Embodiment
The present invention is described further with example below in conjunction with the accompanying drawings
As shown in figure 1, input alternating voltage by transformer T1 decompression, then by rectifier bridge BR1 rectifications, filter capacitor C1,
The input of three terminal regulator is connected after C2, output end connection sample circuit, the output filter circuit of three terminal regulator, is finally obtained
DC voltage required for us, the conversions of this AC/DC power supplys there is pressure difference loss is big, power output is small, volume is big,
The defects of efficiency is low, EMI characteristic differences.
In order to solve the defects of Fig. 1 is present, the AC/DC power supplys of present standard are all solved using modular mode, such as
Shown in Fig. 2, the alternating voltage of input is directly connected to current rectifying and wave filtering circuit after device without transformation after filtering, after rectifying and wave-filtering
High direct voltage be connected to the inputs of high pressure DC/DC modules, by high pressure DC/DC modules isolated variable, again by output filter
After ripple, the voltage required for us is obtained, Fig. 2 compares with Fig. 1, saves bulky Industrial Frequency Transformer, volume is contracted
Small, EMI performance improves, and power output is improved, and efficiency is improved, but still there is some shortcomings, example
Such as：Discrete component needed for high pressure DC/DC module-externals is more, when exchange input height draws inclined, and the efficiency of module is still
Than relatively low（Less than 90%）, circuit engineering be not very advanced etc..
As shown in figure 3, the present invention is to use integrated power module design, it is anti-interference with current rectifying and wave filtering circuit,
PFC（PFC）With control circuit, LLC high voltage half-bridges resonance and control circuit, dual quick disconnection Intelligent control electric
Road, voltage detecting system reset IC circuits, circuit of synchronous rectification, filter circuit, mu balanced circuit, auxiliary power supply circuit and protection electricity
The integrated brand-new modularized design in road, mutual cooperation perfectly realize the two of brand-new modularization AC/DC, DC/DC
Secondary conversion.Thoroughly solves the problem present on.Power module outline drawing is shown in Fig. 4, Fig. 5, and pin is defined as follows in Fig. 4, is drawn
Corresponding function-the VIN of pin 1, the correspondence+VIN of pin 2, the corresponding A CL of pin 3, the corresponding A CN of pin 4, the correspondence+Vo of pin 5,6,7, pin
8th, 9,10 correspondence-Vo, the correspondence-S of pin 11, the correspondence+S of pin 12,13 corresponding TRM of pin, 14 corresponding NC of pin, the correspondence of pin 15
C-, 16 corresponding C+ of pin.
Using integrated power module design, anti-interference and current rectifying and wave filtering circuit, PFC（PFC）With
Control circuit, LLC high voltage half-bridges resonance and control circuit, dual quick disconnection intelligent control circuit, voltage detecting system are reset
IC circuits, circuit of synchronous rectification, filter circuit, mu balanced circuit, auxiliary power supply circuit and protection circuit are integrated brand-new
Modularized design, cooperating perfectly realizes the quadratic transformation of brand-new modularization AC/DC, DC/DC, and power module is basic
Theory diagram is shown in Fig. 3, wherein the form of each circuit has the advance and innovative point of itself, and forms of protection is also unusual
Comprehensively, detailed explanation is carried out to Fig. 3 below.
The fuse as shown in figure 3, input of module, ACL and ACN have connected respectively, FS1 connect anti-interference with FS2
The input of circuit, the protective effect to whole module is served,
LC and π type filter circuit of the anti-jamming circuit using multistage is inputted, to tackle the interference of different frequency and electromagnetic interference, then
The input of circuit of power factor correction is connected after current rectifying and wave filtering circuit, circuit of power factor correction uses booster type
（Boost）Circuit design, rectification circuit and big filter capacitor are split, by controlling PFC switching tubes Q1 conducting to make input electric
The change of stream tracking input voltage, obtains preferable power factor, reduces the work electricity of electromagnetic interference EMI and stable switch pipe
Pressure.The course of work is as follows：When switching tube Q1 is turned on, electric current IL1 flows through inductance coil L1, before inductance coil unsaturation, electricity
Cleanliness increase, electric energy are stored in inductance coil in the form of magnetic energy, and now electric capacity C2 electric discharges provide energy for load；Work as Q1
During cut-off, L1 both ends produce self induction electromotive force VL1, and to keep the sense of current constant, such VL1 connects to electric capacity with power supply VIN
And load supplying.Here emphasis says the effect of diode D3, and diode D3 has very important effect：
1. impact of the surge voltage to electric capacity is reduced, it is huge because surge current produces in the moment limitation PFC inductance L1 of start
Self induction electromotive force, so as to cause fault.It can be AC sine wave that each power switch connection moment, which is added on inductance,
Any instantaneous value, if power switch connect moment be near the maximum peak dot in sine wave, then give inductance institute
What is added is the voltage of a mutation, can cause and great self induction electromotive force is produced on inductance L1, and the electromotive force is that institute is alive
, gently then cause the blown fuse of input circuit more than twice, and form larger electric current and electric capacity below is charged, it is heavy then draw
Play filter capacitor and switching tube Q1 breakdown.Set after protection diode D3 in the moment to switch on power, turned on by D3 and C2 is filled
Electricity, the electric current for making to flow through PFC inductance L1 greatly reduce, and caused self induction electromotive force is also much smaller, to filter capacitor and switch
The harm of pipe and the fusing of fuse are all much smaller.
2. reducing impact of the surge voltage to booster diode D4, the diode shunts a part of PFC inductance L1 and boosting
The electric current of diode D4 branch roads, thus booster diode D4 can be shielded.
R1, R2, C1 composition switching tube Q1 disappear peak circuit to absorb the DS spikes of switching tube, R5, R6, C3 composition principal voltage inspection
Slowdown monitoring circuit, when the voltage for detecting pin is less than 0.5V, PFC（PFC）Controller will enter open loop guard mode and
Output is powered off, R7, R8, C4 composition power-down protection circuit, when the voltage for detecting pin is less than 1V, PFC（PFC）
Controller closes its interior door driver and enters power down protection state, and C3, C4 are noise shunt electric capacity, are in addition also had
There is the defencive function of excessively stream and overvoltage, utilize advanced PFC（PFC）Controller makes it be operated in continuous Working mould
Formula, it ensure that the high efficiency in whole loading range and safe and reliable dynamic row.
By PFC（PFC）After circuit, switching tube Q2 drain electrode obtained one it is higher more stable straight
Flow voltage（Survey DC385V or so）, powered after R9, R10 partial pressure to high voltage half-bridge resonant controller, C5 is noise shunt
Electric capacity.High voltage half-bridge resonant controller it be a both-end controller specific to series resonant half bridge topology, it is provided
50% complementary duty cycle：High side switches Q2 and lower edge switch Q3,180 degree of out of phase identical times, output voltage
Regulation is by adjusting its operating frequency, and dutycycle is less than 50% during real work, because internal have a fixed dead drive
Time insertion turns off MOS and starts MOS all the way all the way, and this dead time is most important for converter normal work, and it is true
Sofe Switch is protected, discharges efficiency high and low EMI during its high-frequency work.
It is exactly to improve switching frequency that tradition, which improves power density most effective way, and the magnetics volume under high frequency can be big
Amplitude reduces, but the raising of frequency can increase the switching loss of switching tube, the efficiency of converter be impacted, using high frequency
Work will substantially reduce size such as transformer and inductor of passive device etc..But it is unfavorable that switching loss is brought to high-frequency work
Influence, seriously constrain the continuous improvement of switching frequency.To reduce switching loss and rectifier loss, switching power converters are improved
Operating efficiency, therefore use LLC resonant type soft-switch Technology designs, its circuit structure is simple, can realize primary main switch pipe
No-voltage（ZVS）Conducting and the zero current of secondary commutation pipe（ZCS）Shut-off, design is relatively easy, while current waveform is in sine
Change, switching loss and noise can be greatly reduced, and efficiently reduce the interference of electromagnetic radiation.
LLC resonant half-bridge converters main circuit is made up of three parts, Q2, Q3 composition square-wave generator, L2, T1, C6 group
Into resonant network, Q4, Q5 using metal-oxide-semiconductor substitute conventional diode design composition rectifying and wave-filtering network, this circuit it both absorbed
The effect of blocking that series resonant converter resonant capacitance is played and power resonance loop current change with load weight and
The advantages of efficiency is higher during underloading, while had parallel resonance converter concurrently again and can be operated under idle condition, to filtered electrical
The pulsation of current of appearance requires the characteristics of small.
Switching is all with 50% dutycycle driven switching tube Q2 and Q3 every time for square-wave generator, so as to produce square-wave voltage
Ub.Ua obtains by ac voltage rectifier and by PFC, so as to provide higher more stable DC voltage, while
Current stress is reduced, reduces harmonic pollution.
Resonant network：Include series resonance inductor L2, parallel resonant inductor Lm（Transformer T1 magnetizing inductance）And series connection
Resonant capacitance C6.When flash metal-oxide-semiconductor Q2 is turned on, and low side metal-oxide-semiconductor Q3 is turned off, electric current is by resonant inductance L2, Lm to resonance electricity
Hold C6 chargings, the curve of charging is in the waveform in sine wave upper half cycle, and then Q2, Q3 are turned off, and have crossed resonance after dead time
Electric capacity C6 and resonant inductance L2, Lm, a loop is formed by Q3 and discharged, produces sine wave.It is high when low side metal-oxide-semiconductor Q3 conductings
When side metal-oxide-semiconductor Q2 is turned off, C6 chargings are close to Ua, and the electric current in resonant inductance L2, Lm is zero, and then C6 starts to discharge, resonance
The electric current of inductance is reversely risen by zero, and C6 voltage just reaches zero by the negative right side in a left side, then because the effect of resonant inductance is reversely filled
Electric to arrive a right negative left side just, if be not lost, C6 voltage will be charged to charging stopping after L)R Ua, and the electric current of resonant inductance is
Zero, then low side metal-oxide-semiconductor Q3 shut-offs, flash metal-oxide-semiconductor Q2 conductings, because secondary has energy output and other losses, C6 voltage
Ua degree will not be reversely charged to.
Resonant frequency is described further below：LLC resonant half-bridge converters have two different resonant frequencies, when
When the magnetizing inductance Lm of transformer is not involved in circuit resonance, the resonant frequency of converter is defined as Fr, when the excitation electricity of transformer
When feeling Lm participation circuit resonances, the resonant frequency of converter is defined as Fm, and as working frequency Fs ＜ Fm, controlled resonant converter is primary
Switching tube can neither realize no-voltage turn on, secondary metal-oxide-semiconductor can not realize zero-current switching, so to avoid power work
In this region；As working frequency Fr ＜ Fs, the primary switching tube of controlled resonant converter can realize that no-voltage is open-minded, still
Secondary metal-oxide-semiconductor electric current is continuous, can not realize zero-current switching；As working frequency Fm ＜ Fs ＜ Fr, controlled resonant converter is complete
In loading range, the switching tube of resonance circuit can realize that no-voltage turns on, and metal-oxide-semiconductor can realize zero-current switching.Therefore open
The working frequency for closing pipe is controlled in this section as far as possible.
Rectifying and wave-filtering network is made up of Q4, Q5 and output filter circuit, and Q4, Q5 are using the extremely low special power of internal resistance
Metal-oxide-semiconductor substitutes commutation diode to reduce rectifier loss, so not only greatly improves the efficiency of converter, and in the absence of by
Schottky barrier voltage and caused by dead zone voltage.
The quick intelligent controller that disconnects is two power MOS pipe Q4 and Q5 synchronization LLC resonance converters corrections of driving, and it has
There are small idling consumption, overtemperature protection, power supply voltage range is wide, quick-disconnect time is short（Total delay 20ns）, light condition work
When there was only 600uA static current consumptions, there is reverse-current protection inside controller（RCP）Function, it is ensured that metal-oxide-semiconductor is in high-frequency
（Maximum 300KHZ switching frequencies）Safe operation under CCM states.
Voltage detecting, system reset controller, can set detection voltage by adding non-essential resistance, can also add outer
Portion's electric capacity sets required time delay by built-in delay circuit.
Output voltage stabilizing circuit is designed using high precision reference TL431, and it has, and reference voltage temperature drift is small, reference voltage is smart
The technical characterstics such as degree is high, output noise voltage is low, voltage stabilized range is wide, load current range is big.
The output end and power factor of feedback and protection circuit（PFC）Adjuster, high voltage half-bridge resonant controller, voltage inspection
The input that survey, system reset controller is connected, and is controlled by light-coupled isolation, to reach the purpose of adjustment and protection module.
Described above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, on the premise of principle of the present invention is not departed from, some improvements and modifications can also be made, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (8)
1. a kind of integrated PFC high voltage half-bridges resonance synchronous rectification AC/DC power modules, including input, output end, its feature exist
In, synchronous rectification AC/DC power modules also include input anti-jamming circuit, current rectifying and wave filtering circuit, PFC with
Control circuit, LLC high voltage half-bridges resonance and control circuit, dual quick disconnection intelligent control circuit, voltage detecting system are reset
IC circuits, circuit of synchronous rectification, filter circuit, mu balanced circuit, auxiliary power supply circuit, feedback and protection circuit, whole circuit collection
The module for being integrally formed.
2. integrated PFC high voltage half-bridge resonance synchronous rectification AC/DC power modules as claimed in claim 1, it is characterised in that institute
Input anti-jamming circuit is stated as multistage LC and π type filter circuits, input anti-jamming circuit and input two terminals it
Between respectively series connection one fuse.
3. integrated PFC high voltage half-bridge resonance synchronous rectification AC/DC power modules as claimed in claim 1, it is characterised in that institute
Stating PFC and control circuit includes the first input diode, the second input diode, protection diode, two poles of boosting
Pipe, the first inductance, first switch pipe, the first electric capacity, power factor FPC controllers, first input diode and second defeated
Enter diodes in parallel, the first input diode, the positive pole of the second input diode are both connected to input anti-jamming circuit and rectification
Between filter circuit, the first input diode, the negative pole of the second input diode are all connected with power factor FPC controllers, and first
Inductance is connected current rectifying and wave filtering circuit with the circuit on one side that protection diode composes in parallel after being connected with booster diode, the other end connects
Connect one end of the first electric capacity, the other end connection power factor FPC controllers of the first electric capacity.
4. integrated PFC high voltage half-bridge resonance synchronous rectification AC/DC power modules as claimed in claim 3, it is characterised in that institute
Stating PFC also includes disappear peak circuit, principal voltage detection circuit, power-down protection circuit with control circuit.
5. integrated PFC high voltage half-bridge resonance synchronous rectification AC/DC power modules as claimed in claim 1, it is characterised in that institute
Stating LLC high voltage half-bridges resonance and control circuit includes high voltage half-bridge resonant controller, high side switches, lower edge switch, series resonance
Inductance, transformer, series resonant capacitance, the first controlling switch pipe, the second controlling switch pipe, high side switches form with lower edge switch
Square-wave generator, square-wave generator connection high voltage half-bridge resonant controller, after series resonance inductor is in parallel with series resonant capacitance
The primary of one end connection connection transformer, the other end of series resonance inductor are connected between high side switches and lower edge switch, gone here and there
Join the other end connection lower edge switch of resonant capacitance, the first controlling switch pipe, the second controlling switch pipe and output filter circuit are total to
With composition rectifying and wave-filtering network, the first controlling switch pipe, the second controlling switch pipe are connected to the both ends of transformer secondary output.
6. integrated PFC high voltage half-bridge resonance synchronous rectification AC/DC power modules as claimed in claim 5, it is characterised in that institute
State the first controlling switch pipe, the second controlling switch pipe is metal-oxide-semiconductor.
7. integrated PFC high voltage half-bridge resonance synchronous rectification AC/DC power modules as claimed in claim 5, it is characterised in that institute
Stating the dual quick intelligent control circuit that disconnects includes quick disconnection intelligent controller, and the quick intelligent controller that disconnects is used to drive
Dynamic first controlling switch pipe, the correction of the second controlling switch pipe synchronization high voltage half-bridge resonant controller.
8. integrated PFC high voltage half-bridge resonance synchronous rectification AC/DC power modules as claimed in claim 1, it is characterised in that institute
Stating voltage detecting system replacement IC circuits includes one kind in non-essential resistance or external capacitive, and the voltage detecting system resets IC
Circuit also includes voltage detecting and resets controller.
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| CN201710676174.3A CN107370404A (en) | 2017-08-09 | 2017-08-09 | Integrated PFC high voltage half-bridge resonance synchronous rectification AC/DC power modules |
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| CN201710676174.3A CN107370404A (en) | 2017-08-09 | 2017-08-09 | Integrated PFC high voltage half-bridge resonance synchronous rectification AC/DC power modules |
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| CN108347172A (en) * | 2018-03-07 | 2018-07-31 | 山东超越数控电子股份有限公司 | A kind of isolation DC-DC power module meeting GJB181 standards |
| CN108988663A (en) * | 2018-06-11 | 2018-12-11 | 珠海格力智能装备有限公司 | A kind of switching power circuit and Switching Power Supply |
| CN110299818A (en) * | 2018-03-21 | 2019-10-01 | 青岛朗进集团有限公司 | A kind of binary channels PFC power module circuit |
| CN110504847A (en) * | 2018-05-18 | 2019-11-26 | 龙海特尔福汽车电子研究所有限公司 | A kind of AC-DC converter based on PFC+LLC topology |
| CN113138651A (en) * | 2021-03-08 | 2021-07-20 | 广东迅扬科技股份有限公司 | Computer power supply circuit |
| CN114069694A (en) * | 2021-11-02 | 2022-02-18 | 北京动力源科技股份有限公司 | Method for reducing loop inductance of multi-phase variable frequency/fixed frequency parallel multi-module unit |
| CN118174517A (en) * | 2024-05-16 | 2024-06-11 | 厦门科司特电子股份有限公司 | Power supply circuit and electronic equipment |
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| CN108347172A (en) * | 2018-03-07 | 2018-07-31 | 山东超越数控电子股份有限公司 | A kind of isolation DC-DC power module meeting GJB181 standards |
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| CN114069694B (en) * | 2021-11-02 | 2024-03-22 | 北京动力源科技股份有限公司 | Method for reducing loop inductance of multiphase variable frequency/fixed frequency parallel multi-module unit |
| CN118174517A (en) * | 2024-05-16 | 2024-06-11 | 厦门科司特电子股份有限公司 | Power supply circuit and electronic equipment |
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