CN107769562A - Winding driving circuit and its control method, switching power circuit - Google Patents
Winding driving circuit and its control method, switching power circuit Download PDFInfo
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- CN107769562A CN107769562A CN201610674388.2A CN201610674388A CN107769562A CN 107769562 A CN107769562 A CN 107769562A CN 201610674388 A CN201610674388 A CN 201610674388A CN 107769562 A CN107769562 A CN 107769562A
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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
- H02M3/33576—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 having at least one active switching element at the secondary side of an isolation transformer
- H02M3/33592—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 having at least one active switching element at the secondary side of an isolation transformer having a synchronous rectifier circuit or a synchronous freewheeling circuit at the secondary side of an isolation transformer
-
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
The embodiment of the present invention provides a kind of winding driving circuit and its control method, switching power circuit, the voltage of the wherein main transformer in the transformer process auxiliary drive winding coupled primary circuit of winding driving circuit and obtains the voltage signal of positive and negative checker；The output end of transformer process auxiliary drive winding is connected with the first switch pipe in secondary circuit and negater circuit input respectively, negater circuit output end is connected with power driving circuit input, and power driving circuit output end is connected with the second switch pipe in secondary circuit；The output of transformer process auxiliary drive winding drives first switch pipe when being positive voltage signal, when exporting the voltage signal to bear, by negater circuit to driving second switch pipe by power driving circuit after voltage signal progress reverse process.The present invention can be achieved with the driving to two switching tubes in secondary circuit by a transformer process auxiliary drive winding, simplify Transformer Winding design, and can lift power-efficient.
Description
Technical field
The present invention relates to electric and electronic technical field, more particularly to a kind of winding driving circuit and its control realization side
Method, switching power circuit.
Background technology
Field of switch power, middle low power Switching Power Supply is typically using active clamp forward topology, and secondary circuit is using same
Walk rectifier structure.In order to obtain high efficiency, low cost, according to active clamp forward topological feature, secondary circuit synchronous rectifier
Use winding self-powered flowing mode.When rectifying tube and this multiple switch pipe scene of continued flow tube simultaneously be present in secondary circuit, current
Type of drive is that rectifying tube existing for secondary circuit and continued flow tube are driven respectively using two assists windings.This side
Case causes Transformer Winding complex designing, and transformer efficiency winding position can be occupied by driving winding, cause transformer efficiency around
Group reduces around linear window, winding diameter, number of turn in parallel etc., influences power-efficient indirectly.
The content of the invention
Winding driving circuit and its control method, switching power circuit provided in an embodiment of the present invention, main solution
Technical problem certainly is：Solve it is existing need an assists winding is respectively adopted for two switching tubes existing for secondary circuit enter
Row driving, cause Transformer Winding complex designing, influence the problem of power-efficient.
In order to solve the above technical problems, the embodiment of the present invention provides a kind of winding driving circuit, including：
Transformer process auxiliary drive winding, negater circuit and power driving circuit；
The voltage of main transformer in the transformer process auxiliary drive winding coupled primary circuit obtains positive and negative checker
Voltage signal；The output end of the transformer process auxiliary drive winding respectively with the first switch pipe in secondary circuit and described anti-
Connected to circuit input end, the negater circuit output end is connected with the power driving circuit input, the power drive
Circuit output end is connected with the second switch pipe in the secondary circuit；
The transformer process auxiliary drive winding output drives the first switch pipe when being positive voltage signal, and it is negative to export
Voltage signal when, driven after carrying out reverse process to the voltage signal by the negater circuit by the power driving circuit
The second switch pipe.
The embodiment of the present invention also provides a kind of switching power circuit, including：
Primary circuit, secondary circuit and winding driving circuit as described above；
The primary circuit is of coupled connections with the secondary circuit, primary side described in the transformer process auxiliary drive winding coupled
The voltage of main transformer in circuit obtains the voltage signal of positive and negative checker；The transformer process auxiliary drive winding it is defeated
Go out end to be connected with the first switch pipe in the secondary circuit, in the power driving circuit output end and the secondary circuit
Second switch pipe connects；
The transformer process auxiliary drive winding output drives the first switch pipe when being positive voltage signal, and it is negative to export
Voltage signal when, driven after carrying out reverse process to the voltage signal by the negater circuit by the power driving circuit
The second switch pipe.
The embodiment of the present invention also provides a kind of winding driving circuit control method, including：
Transformer process auxiliary drive winding, negater circuit and power driving circuit；
The output end of transformer process auxiliary drive winding is defeated with the first switch pipe in secondary circuit and negater circuit respectively
Enter end connection, and the negater circuit output end is connected with power driving circuit input, and the power drive is electric
Road output end is connected with the second switch pipe in the secondary circuit；
The voltage of main transformer in the transformer process auxiliary drive winding coupled primary circuit obtains positive and negative checker
Voltage signal；
The first switch pipe is driven for positive voltage signal by transformer process auxiliary drive winding output；
Transformer process auxiliary drive winding output is reversely located for negative voltage signal by the negater circuit
The second switch pipe is driven by the power driving circuit after reason.
The beneficial effects of the invention are as follows：
Winding driving circuit and its control method, the switching power circuit provided according to embodiments of the present invention, its
Middle winding driving circuit includes transformer process auxiliary drive winding, negater circuit and power driving circuit；Transformer auxiliary is driven
The voltage of main transformer in dynamic winding coupled primary circuit obtains the voltage signal of positive and negative checker；Transformer auxiliary is driven
The output end of dynamic winding is connected with the first switch pipe in secondary circuit and negater circuit input respectively, negater circuit output end
It is connected with power driving circuit input, power driving circuit output end is connected with the second switch pipe in secondary circuit；Transformation
The output of device process auxiliary drive winding drives first switch pipe when being positive voltage signal, when exporting the voltage signal to bear, by anti-
Second switch pipe is driven by the power driving circuit after reverse process is carried out to the voltage signal to circuit.The present invention utilizes one
Individual transformer process auxiliary drive winding can be achieved with the driving to two switching tubes in secondary circuit, simplifies Transformer Winding and sets
Meter, reduces cost, avoids taking transformer efficiency winding position so that transformer efficiency winding is around linear window, winding diameter, simultaneously
Power-efficient can be lifted with optimal design-aside by joining number of turn etc..
Brief description of the drawings
Fig. 1 is the winding driving circuit structural representation that the embodiment of the present invention one provides；
Fig. 2 is another winding driving circuit structural representation that the embodiment of the present invention one provides；
Fig. 3 is the winding driving circuit structural representation that the embodiment of the present invention two provides；
Fig. 4 is the signal logic schematic diagram that the embodiment of the present invention two provides；
Fig. 5 is the circuit structure schematic diagram in active clamp forward topology that the embodiment of the present invention three provides；
Fig. 6 is that another implementation circuit structure in active clamp forward topology that the embodiment of the present invention three provides is former
Reason figure；
Fig. 7 is the circuit structure schematic diagram in another active clamp forward topology that the embodiment of the present invention three provides；
Fig. 8 is another implementation circuit in another active clamp forward topology that the embodiment of the present invention three provides
Structure principle chart；
Fig. 9 is the circuit structure schematic diagram in single-end ortho-exciting resonant reset topology that the embodiment of the present invention three provides；
Figure 10 is the circuit structure schematic diagram in flyback topologies that the embodiment of the present invention three provides.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is part of the embodiment in the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
Embodiment one：
Shown in Figure 1, the winding driving circuit that the present embodiment provides includes transformer process auxiliary drive winding, reversely electricity
Road and power driving circuit.
Transformer process auxiliary drive winding in the present embodiment is of coupled connections with the main transformer in primary circuit, for primary side
The voltage of main transformer in circuit obtains the voltage signal of positive and negative checker.The output end of transformer process auxiliary drive winding
It is connected respectively with the first switch pipe in secondary circuit and negater circuit input, negater circuit output end and power driving circuit
Input is connected, and power driving circuit output end is connected with the second switch pipe in secondary circuit；
The output of transformer process auxiliary drive winding drives first switch pipe when being positive voltage signal, exports and believes for negative voltage
Number when, by negater circuit to the voltage signal carry out reverse process after by power driving circuit drive second switch pipe.Power
Drive circuit can future self-reversal circuit voltage signal carry out power amplification obtain the drive signal of second switch pipe.
The embodiment of the present invention can be achieved with to two first in secondary circuit by a transformer process auxiliary drive winding
The driving of switching tube and second switch pipe, can simplify Transformer Winding design, reduce cost, avoid take transformer efficiency around
Group position so that transformer efficiency winding can lift power supply effect around linear window, winding diameter, number of turn in parallel etc. with optimal design-aside
Rate.
Specifically, transformer process auxiliary drive winding in the present embodiment can directly using main transformer an auxiliary around
Group, the first connection end ground connection of the assists winding, second connection end are connected with first switch pipe and negater circuit.It can so enter
One step simplifies Transformer Winding design, saves cost.
Shown in Figure 2, the winding driving circuit in the present embodiment also includes booster circuit and auxiliary power supply circuit；
The input and output end of booster circuit are defeated with the output end and negater circuit of transformer process auxiliary drive winding respectively
Enter end connection；Auxiliary power supply circuit includes unidirectional charging circuit, the input of unidirectional charging circuit and the output end of booster circuit
Connection, output end are connected with circuit to be powered；
When booster circuit output is positive voltage signal, unidirectional charging circuit is charged and powered simultaneously for circuit to be powered；
It is that circuit to be powered is powered by unidirectional charging circuit when booster circuit output is negative voltage signal.
Illustrated with reference to whole control process.It is shown in Figure 2,
Transformer process auxiliary drive winding coupled carrys out energy on autonomous work(depressor and obtains the voltage signal of positive and negative checker,
The first switch of secondary circuit can be driven directly or after further treatment by being designated as 101,101 after (such as driving voltage amplitude limit)
Pipe.101 are input to boost module circuit, after boosted circuit, obtain the voltage in the more stable amplitude of full input voltage range
Signal and auxiliary power supply voltage signal, are designated as 102.102 are input to auxiliary power supply circuit, obtain supply voltage, can directly or
Powered after processing (such as the processing such as linear voltage stabilization) to circuit to be powered (such as control circuit part), be designated as 103.
102 are input to signals reverse circuit, obtain with 102 reverse voltage signals in logic, be designated as 104.104 through power driving circuit
Afterwards, the drive signal 105,105 for obtaining power amplification is used for driving the second switch pipe of secondary circuit.
It should be appreciated that the first switch pipe in the present embodiment is rectifying tube, second switch pipe is continued flow tube；Or first
Switching tube is continued flow tube, and second switch pipe is rectifying tube.
In a kind of embodiment of the present invention, booster circuit includes boost capacitor, boosting one-way conduction control device；Boosting electricity
Hold the output end of one end connection transformer process auxiliary drive winding, other end connection and the output end of boosting one-way conduction control device
Connection, boost one-way conduction control device input end grounding；
When transformer process auxiliary drive winding output voltage signal is bears, boost capacitor is charged, transformer auxiliary is driven
Winding output voltage signal is moved to deliver to auxiliary power supply circuit and negater circuit after the voltage superposition in timing, with boost capacitor.
Boosting one-way conduction control device in the present embodiment is specifically as follows booster diode, and the second of boost capacitor connects
Connect the negative electrode of end connection booster diode, the plus earth of booster diode.
Booster circuit in the present embodiment may also include the boost resistor being connected in parallel with boosting one-way conduction control device
Adjust sub-circuit.Boost resistor adjustment sub-circuit can adjust boost capacitor and deposit capacitance.
Unidirectional charging circuit in the present embodiment includes power supply one-way conduction control device and auxiliary power supply electric capacity, and power supply is single
Guide ventilating controller part input is connected with the output end for one-way conduction control device of boosting；The connection of auxiliary power supply electric capacity one end supplies
The output end of electric one-way conduction control device, other end ground connection；Auxiliary power supply electric capacity is connected with circuit to be powered simultaneously, to wait to supply
Circuit is powered.
Power supply one-way conduction control device in the present embodiment is specifically as follows auxiliary power supply diode, the pole of auxiliary power supply two
The negative electrode of the anode connection booster diode of pipe, while be connected with the second connection end of boost capacitor；Auxiliary power supply electric capacity first
Connection end connects the negative electrode of auxiliary power supply diode, second connection end ground connection.The voltage obtained on auxiliary power supply electric capacity is directly used
In being powered to control section circuit or give circuit part to be powered (such as control circuit portion after further voltage stabilizing processing
Point) power supply.
It should be appreciated that each one way conducting device in the present embodiment is not limited to diode, can be real with any energy
The various devices or circuit of existing one-way conduction.
Negater circuit in the present embodiment includes conducting speed control resistance, pull-up resistor and reverse transistor；Conducting speed
The one of degree control resistance connects the negative electrode of end connection boosting one-way conduction control device, another base for connecing end and connecting reverse transistor
Pole；The emitter stage connection ground of reverse transistor, colelctor electrode connect one end of pull-up resistor, and the other end and the auxiliary of pull-up resistor supply
Power supply connects.
Conducting speed control resistance in the present embodiment can realize that hereinafter referred to as first is reversely electric by a resistance
Resistance, pull-up resistor can also pass through a resistance realization, hereinafter referred to as the second backward resistance.Reverse transistor can use various
Triode, metal-oxide-semiconductor etc. are realized, are illustrated below exemplified by using reverse triode.Now first backward resistance
The first connection end connect the negative electrode of the booster diode, the second connection end connection of first backward resistance is described reversely
The base stage of triode.The emitter stage connection ground of the reversely triode, colelctor electrode connect one end of second backward resistance, the
The other end connection auxiliary electric power supply of two backward resistances, it is booster circuit output letter that negater circuit part, which is used for input signal,
Number carry out reverse.
Power driving circuit in the present embodiment includes the first power transistor and the second power transistor, and the first power is brilliant
The base stage of body pipe connects the base stage of the second power transistor, and connects pull-up resistor simultaneously；The colelctor electrode of first power transistor
Connect the auxiliary electric power supply；The colelctor electrode connection ground of second power transistor, the emitter stage difference of the first power transistor
It is connected with the emitter stage of second switch pipe and the second power transistor.Power transistor in the present embodiment can also use various
Triode, metal-oxide-semiconductor etc..Below using the first power transistor as NPN power drive triodes, the second power transistor is PNP work(
Illustrated exemplified by rate driving triode.The now base stage connection PNP power drive triodes of NPN power drives triode
Base stage, and connect the second backward resistance of signals reverse circuit part simultaneously.The colelctor electrode connection of NPN power drive triodes
Auxiliary electric power supply, the colelctor electrode connection ground of PNP power drive triodes.The emitter stage connection PNP of NPN power drive triodes
The emitter stage of power drive triode, the signal are used for driving the second switch pipe of secondary.
It can be seen that the present embodiment utilizes a transformer assists winding, the driving of rectifying tube and continued flow tube is realized, simultaneously
The auxiliary power supply voltage all more stable to whole input voltage range, transformer and inductor Winding Design are simplified, improved
Power-efficient.The winding driving circuit auxiliary power supply voltage establishes fast, voltage stabilization, so as to which the work of control circuit part is steady
It is fixed, improve the performance and reliability of power supply.Using the winding driving circuit, switching tube is before enough driving voltages are met
Put, it is easier to realize gate drive voltage not ultra-specification limit value, improve the efficiency and reliability of power supply on the whole.
Embodiment two：
In order to be better understood from the present invention, below using a kind of winding driving circuit of concrete structure as example, to this hair
It is bright to do further illustration.Shown in Figure 3, Na is transformer process auxiliary drive winding, transformer process auxiliary drive winding one end
Connection ground, the other end provide output signal, are designated as 201, and the signal 201 follows primary circuit main transformer voltage is positive and negative alternately to become
Change, such as 201 signal schematic representations in Fig. 4, set the 201 malleation values reached as V just, 201 negative pressure values reached are born for V.201 signals
After can be directly or through processing, to drive the one of secondary circuit group of switching tube, hereinafter referred to as first switch pipe.
Booster circuit includes boost capacitor Cp, booster diode Dp and boost resistor Rp, when 201 signals is bear, passes through Dp
Cp is charged, selection parameter Cp capacitance, makes always voltage V can be kept to bear on Cp.201 signals are timing, on winding
Voltage V just bears with voltage V on boost capacitor Cp and is superimposed, and bears for V just+V after superposition, as the output signal of booster circuit, is designated as
202.The resistance Rp of booster circuit is used to balance voltage in boost capacitor, and it is actually required signal to make 202 signals.
Born due to the positive left negative voltage V in a right side on Cp always be present, so being cut in 201 signals from high level toward low level
When changing, when 201 signals reach 0V, 202 signals also have a voltage V to bear；And 201 signals switch from low level toward high level
When, when 201 signals reach 0V, 202 signals have had a voltage V to bear, as shown in Figure 4.
Auxiliary power supply circuit includes auxiliary power supply diode Dc and auxiliary power supply electric capacity Cc.When 202 signals are high, pass through
Dc charges to Cc, and is powered simultaneously for control circuit part；When 202 signals are low, Dc cut-offs, power supply capacitor Cc is control
Circuit part is powered.So 203 signals of auxiliary power supply circuit output are substantially invariable voltage, it can be directly or through
After further voltage stabilizing processing, control circuit part is supplied electricity to, as shown in Figure 4.
Negater circuit includes the first backward resistance Rr1, the second backward resistance Rr2 and reverse triode Qr, 202 signals are
Gao Shi, Qr are turned on, and the colelctor electrode of triode is pulled low, so as to which now negater circuit output signal 204 is low；202 signals are low
When, 204 signals are put height by Qr cut-offs, Rr2.On 204 signals and 202 signal logics reversely, as shown in Figure 4.
Power driving circuit includes power drive triode Qd1 and power drive triode Qd2, when 204 signals are height
When, Qd1 conductings, 205 signals are height, and amplitude is the conduction voltage drop that 204 signals subtract triode be knots；When 204 signals are low,
Qd2 is turned on, and 205 signals are dragged down.205 signals are used for another group of switching tube for driving secondary, hereinafter referred to as second switch pipe.
From the above analysis, on the time for reach 0V there is a time difference in 202 signals and 201 signals, so as to
There is a time difference in follow-up 205 signals and 201 signals, this time difference is the dead time of two groups of switching tubes of secondary.
In actual applications, dead time can be adjusted by adjusting Rr1, Rr1 is either modified to forward-, series or reverse two
The mode of pole pipe carries out dead band regulation.During occupation mode in fig. 2, increase Rr1, then 202 for it is high when, the more late conductings of Qr,
The 204 more late more late shut-offs of rectifying tube for being pulled low, being driven so as to corresponding 205 signals；Increase Rr1, then 202 for it is low when, Qr is more late
Shut-off, 204 it is more late be set to height, so as to which the rectifying tube of corresponding 205 signals driving is more late open-minded.Reduce Rr1, then circuit is toward phase negative side
To action.
By the winding drive circuit shown in Fig. 4, the driving of two groups of switching tubes of secondary circuit can be realized by a winding,
And share a booster circuit, under the conditions of obtaining full input voltage range, more constant auxiliary electric power supply.
Embodiment three：
Present embodiments provide a kind of switching power circuit, including primary circuit, secondary circuit and winding as above from
Drive circuit；Primary circuit is of coupled connections with secondary circuit, the main transformer pressure in transformer process auxiliary drive winding coupled primary circuit
The voltage of device obtains the voltage signal of positive and negative checker；In the output end and secondary circuit of transformer process auxiliary drive winding
First switch pipe is connected, and power driving circuit output end is connected with the second switch pipe in secondary circuit；Transformer process auxiliary drive
Winding output drives first switch pipe when being positive voltage signal, when exporting the voltage signal to bear, by negater circuit to this
Second switch pipe is driven by power driving circuit after voltage signal progress reverse process.
It should be appreciated that the primary circuit and secondary circuit in the present embodiment specifically can use various topologys to tie
Structure.Illustrated below with the winding driving circuit shown in Fig. 3 with reference to various topological structure application examples.
Scene one：
A kind of implementation occasion of the invention is as shown in figure 5, (low side has for LOW SIDE CLAMP in active clamp forward topology
Source clamp circuit) clamp mode topological structure.
When primary circuit supervisor N_M is opened, voltage on transformer process auxiliary drive winding Na1 coupling main transformers, Same Name of Ends
The signal of tie point 301 is the forward voltage with input voltage into turn ratio relation, and 301 signals can be directly or through further processing
Secondary circuit synchronization rectifying tube N_rec is driven afterwards, and 301 signals can also drive rectifying tube N_ after further amplitude limit
rec.Now 302 signals are that 301 signals are superimposed with voltage on boost capacitor Cp1.302 signals pass through auxiliary power supply diode
Dc1 is that Cc1 is charged, and is the energy source of the signal of auxiliary power supply 303.302 signals turn on Qr1 by Rr11 simultaneously, will
304 signals are set low, and then 305 signals are set low, and continued flow tube N_con is turned off in major loop.
During primary circuit supervisor's N_M shut-offs, main transformer primary side both end voltage is that voltage subtracts on clamping capacitance Cclamp
Input voltage, now transformer process auxiliary drive winding Na1 couple main transformer on voltage, the signal of Same Name of Ends tie point 301 be it is negative,
Synchronous rectifier N_rec is turned off.301 signal negative voltage values are the negative sense with main transformer primary side both end voltage into turn ratio relation
Voltage, booster diode Dp1 conductings, Na1 are that boost capacitor Cp1 is charged, and now because Dp1 is turned on, 302 signals are set to
It is low.Maintained in auxiliary power module by power supply capacitor Cc1.302 signals are low, and Qr1 shut-offs, 304 signals put height by Rr12,
Qd11 is turned on, and 305 signals is high, and continued flow tube N_con is open-minded in major loop.
Scene two：
The present invention is a kind of to implement occasion as shown in fig. 6, clamp for LOW SIDE CLAMP in active clamp forward topology
Mode topological structure.
When primary circuit supervisor N_M is opened, voltage on transformer process auxiliary drive winding Na2 coupling main transformers, Same Name of Ends
The signal of tie point 401 is the negative voltage with input voltage into turn ratio relation, now by the secondary circuit afterflow of 401 signals driving
Pipe N_con is turned off.Booster diode Dp2 is turned on, and Na2 charges to boost capacitor Cp2, now because Dp2 is turned on, 402 letters
Number set low.Maintained in auxiliary power module by power supply capacitor Cc2.402 signals are low, and Qr2 shut-offs, 404 signals pass through Rr22
Height is put, Qd21 conductings, 405 signals is high, and rectifying tube N_rec is open-minded in major loop.
During primary circuit supervisor's N_M shut-offs, main transformer primary side both end voltage is that voltage subtracts on clamping capacitance Cclamp
Input voltage, now transformer process auxiliary drive winding Na2 couple voltage on main transformer, the signal of winding connection points 401 for just,
401 signals are open-minded directly or through the secondary circuit continued flow tube N_con that drives afterwards is further handled.402 signals are 401 signals
It is superimposed with voltage on boost capacitor Cp2.402 signals are charged by auxiliary power supply diode Dc2 to Cc2, are supplied for auxiliary
The energy source of electric 403 signals.402 signals turn on Qr2 by Rr21 simultaneously, 404 signals are set low, and then 405 signals are put
Low, synchronous rectifier N_rec is turned off in major loop.
Scene three：
A kind of implementation occasion of the invention is as shown in fig. 7, be HIGH SIDE CLAMP (flash in active clamp forward topology
Active clamping circuir) clamp mode topological structure.
When primary circuit supervisor N_M is opened, voltage on transformer process auxiliary drive winding Na3 coupling main transformers, Same Name of Ends
The signal of tie point 501 is the forward voltage with input voltage into turn ratio relation, and 501 signals can be directly or through further processing
Secondary circuit synchronization rectifying tube N_rec is driven afterwards.Now 502 signals are the folded of voltage on 501 signals and boost capacitor Cp3
Add.502 signals are charged by auxiliary power supply diode Dc3 to Cc3, are the energy source of the signal of auxiliary power supply 503.Simultaneously
502 signals turn on Qr3 by Rr31, and 504 signals are set low, and then 505 signals are set low, and continued flow tube N_con is closed in major loop
It is disconnected.
During primary circuit supervisor's N_M shut-offs, main transformer primary side both end voltage is voltage on clamping capacitance Cclamp, now
Voltage on transformer process auxiliary drive winding Na3 coupling main transformers, the signal of Same Name of Ends tie point 501 is negative, synchronous rectifier N_
Rec is turned off.501 negative voltage values are negative voltage with main transformer primary side both end voltage into turn ratio relation, booster diode
Dp3 is turned on, and Na3 charges to boost capacitor Cp3, and now because Dp3 is turned on, 502 signals are set low.In auxiliary power module
Maintained by power supply capacitor Cc3.502 signals are low, Qr3 shut-offs, and 504 signals put height, Qd31 conductings by Rr32, and 505 signals are
Height, continued flow tube N_con is open-minded in major loop.
Scene four：
The present invention is a kind of to implement occasion as shown in figure 8, clamp for HIGH SIDE CLAMP in active clamp forward topology
Mode topological structure.
When primary circuit supervisor N_M is opened, voltage on transformer process auxiliary drive winding Na4 coupling main transformers, Same Name of Ends
The signal of tie point 601 is the negative voltage with input voltage into turn ratio relation, now by 601 signals directly or through further
Manage the secondary circuit continued flow tube N_con shut-offs driven afterwards.Booster diode Dp4 is turned on, and Na4 fills to boost capacitor Cp4
Electricity, now because Dp4 is turned on, 602 signals are set low.Maintained in auxiliary power module by power supply capacitor Cc4.602 signals to be low,
Qr4 is turned off, and 604 signals put height by Rr42, and Qd41 conductings, 605 signals is high, and rectifying tube N_rec is open-minded in major loop.
During primary circuit supervisor's N_M shut-offs, main transformer primary side both end voltage is voltage on clamping capacitance Cclamp, now
Voltage on transformer process auxiliary drive winding Na4 coupling main transformers, the signal of winding connection points 601 is just, 601 signals is direct or pass through
Cross that further to handle the secondary circuit continued flow tube N_con driven afterwards open-minded.602 signals are on 601 signals and boost capacitor Cp4
The superposition of voltage.602 signals are that Cc4 is charged by auxiliary power supply diode Dc4, are the energy of the signal of auxiliary power supply 603
Source.602 signals turn on Qr4 by Rr41 simultaneously, and 604 signals are set low, and then 605 signals are set low, synchronous in major loop
Rectifying tube N_rec is turned off.
Scene five：
A kind of implementation occasion of the invention for single-end ortho-exciting capacitor resonance as shown in figure 9, reset topological structure.
When primary circuit supervisor N_M is opened, voltage on transformer process auxiliary drive winding Na5 coupling main transformers, Same Name of Ends
The signal of tie point 701 is the forward voltage with input voltage into turn ratio relation, and 701 signals can be directly or through further processing
Secondary circuit synchronization rectifying tube N_rec is driven afterwards.Now 702 signals are the folded of voltage on 701 signals and boost capacitor Cp5
Add.702 signals are that Cc5 is charged by auxiliary power supply diode Dc5, are the energy source of the signal of auxiliary power supply 703.Simultaneously
702 signals turn on Qr5 by Rr51, and 704 signals are set low, and then 705 signals are set low, and continued flow tube N_con is closed in major loop
It is disconnected.
During primary circuit supervisor's N_M shut-offs, main transformer primary side both end voltage subtracts defeated for voltage on resonant capacitance Cres
Enter voltage, now transformer process auxiliary drive winding Na5 couple main transformer on voltage, the signal of Same Name of Ends tie point 701 be it is negative, together
Walk rectifying tube N_rec shut-offs.701 negative voltage values are the negative voltage with main transformer primary side both end voltage into turn ratio relation,
Booster diode Dp5 is turned on, and Na5 charges to boost capacitor Cp5, and now because Dp5 is turned on, 702 signals are set low.Auxiliary
Maintained in power supply module by power supply capacitor Cc5.702 signals are low, and Qr5 shut-offs, 704 signals put height by Rr52, and Qd51 is turned on,
705 signals is high, and continued flow tube N_con is open-minded in major loop.
Scene six：
Winding driving circuit provided by the invention is not only suitable for secondary circuit and multiple switch pipe be present, is also suitable
The situation of a switching tube is only existed in secondary circuit.Implementation occasion shown in Figure 10, it is flyback topologies structure.
When primary circuit supervisor N_M is opened, voltage on transformer process auxiliary drive winding Na6 coupling main transformers, Same Name of Ends
The signal of tie point 801 is the forward voltage with input voltage into turn ratio relation, and now 802 signals are 801 signals and boost capacitor
The superposition of the upper voltages of Cp6.802 signals are charged by auxiliary power supply diode Dc6 to Cc6, are the signal of auxiliary power supply 803
Energy source.802 signals turn on Qr6 by Rr61 simultaneously, and 804 signals are set low, and then 805 signals are set low, in major loop
Rectifying tube N_rec is turned off.
During primary circuit supervisor's N_M shut-offs, transformer is as inductance afterflow, the secondary circuit rectifying tube N_rec pole of body two
Pipe turns on, and Transformer Winding secondary circuit both end voltage is clamped to output voltage, now transformer process auxiliary drive winding Na6 couplings
Voltage on main transformer is closed, the signal of Same Name of Ends tie point 801 is negative.801 negative voltage values are and main transformer primary side both ends are electric
The negative voltage of turn ratio relation, booster diode Dp6 conductings are pressed into, Na6 is that boost capacitor Cp6 is charged, now due to Dp6
Conducting, 802 signals are set low.Maintained in auxiliary power module by power supply capacitor Cc6.802 signals are low, and Qr6 shut-offs, 804 believe
Number height is put by Rr62, Qd61 conductings, 805 signals are height, and rectifying tube N_rec is open-minded in major loop.
Above content is to combine the further description that specific embodiment is made to the embodiment of the present invention, it is impossible to is recognized
The specific implementation of the fixed present invention is confined to these explanations.For general technical staff of the technical field of the invention,
Without departing from the inventive concept of the premise, some simple deduction or replace can also be made, should all be considered as belonging to the present invention
Protection domain.
Claims (11)
- A kind of 1. winding driving circuit, it is characterised in that including：Transformer process auxiliary drive winding, negater circuit and power driving circuit；The voltage of main transformer in the transformer process auxiliary drive winding coupled primary circuit obtains the electricity of positive and negative checker Press signal；The output end of the transformer process auxiliary drive winding respectively with the first switch pipe in secondary circuit and it is described reversely electricity Road input connection, the negater circuit output end are connected with the power driving circuit input, the power driving circuit Output end is connected with the second switch pipe in the secondary circuit；The transformer process auxiliary drive winding output drives the first switch pipe when being positive voltage signal, exports as negative electricity Press signal when, by the negater circuit to the voltage signal carry out reverse process after as the power driving circuit driving described in Second switch pipe.
- 2. winding driving circuit as claimed in claim 1, it is characterised in that the transformer process auxiliary drive winding is described One assists winding of main transformer.
- 3. winding driving circuit as claimed in claim 1, it is characterised in that also including booster circuit and auxiliary power supply electricity Road；The input and output end of the booster circuit respectively with the output end of the transformer process auxiliary drive winding and described anti- Connected to circuit input end；The auxiliary power supply circuit includes unidirectional charging circuit, the input of the unidirectional charging circuit with The output end connection of the booster circuit, output end are connected with circuit to be powered；It is simultaneously the electricity to be powered to the unidirectional charging circuit charging when booster circuit output is positive voltage signal Road powers；When the booster circuit output is negative voltage signal, supplied by the unidirectional charging circuit for the circuit to be powered Electricity.
- 4. winding driving circuit as claimed in claim 3, it is characterised in that the booster circuit includes boost capacitor, risen Press one-way conduction control device；Described boost capacitor one end connects the output end of the transformer process auxiliary drive winding, and other end connection and the boosting are single The output end connection of guide ventilating controller part, the boosting one-way conduction control device input end grounding；When the transformer process auxiliary drive winding output voltage signal is bears, the boost capacitor is charged, the transformation Device process auxiliary drive winding output voltage signal is to deliver to the auxiliary power supply after the voltage superposition in timing, with the boost capacitor Circuit and the negater circuit.
- 5. winding driving circuit as claimed in claim 4, it is characterised in that the booster circuit also includes and the boosting The boost resistor adjustment sub-circuit that one-way conduction control device is connected in parallel.
- 6. winding driving circuit as claimed in claim 4, it is characterised in that the unidirectional charging circuit includes：Power supply is single Guide ventilating controller part and auxiliary power supply electric capacity, the power supply one-way conduction control device input and the boosting one-way conduction The output end of control device is connected；The output of auxiliary power supply electric capacity one end connection power supply one-way conduction control device End, other end ground connection.
- 7. winding driving circuit as claimed in claim 6, it is characterised in that the negater circuit includes conducting speed control Resistance, pull-up resistor and reverse transistor；The one of the conducting speed control resistance connects the end connection boosting one-way conduction control The negative electrode of device processed, another base stage for connecing the end connection reversely transistor；The emitter stage connection ground of the reversely transistor, collection Electrode connects one end of the pull-up resistor, and the other end of the pull-up resistor is connected with auxiliary electric power supply.
- 8. winding driving circuit as claimed in claim 7, it is characterised in that the power driving circuit includes the first power Transistor and the second power transistor, the base stage of first power transistor connect the base stage of the second power transistor, and together When connect the pull-up resistor；The colelctor electrode of first power transistor connects the auxiliary electric power supply；Second work( The colelctor electrode connection ground of rate transistor, the emitter stage of first power transistor respectively with second switch pipe and second work( The emitter stage connection of rate transistor.
- 9. the winding driving circuit as described in claim any one of 1-8, it is characterised in that the first switch pipe is rectification Pipe, the second switch pipe is continued flow tube；Or the first switch pipe is continued flow tube, the second switch pipe is rectifying tube.
- A kind of 10. switching power circuit, it is characterised in that including：Primary circuit, secondary circuit and the winding driving circuit as described in claim any one of 1-9；The primary circuit is of coupled connections with the secondary circuit, primary circuit described in the transformer process auxiliary drive winding coupled In the voltage of main transformer obtain the voltage signal of positive and negative checker；The output end of the transformer process auxiliary drive winding It is connected with the first switch pipe in the secondary circuit, the power driving circuit output end and second in the secondary circuit Switching tube connects；The transformer process auxiliary drive winding output drives the first switch pipe when being positive voltage signal, exports as negative electricity Press signal when, by the negater circuit to the voltage signal carry out reverse process after as the power driving circuit driving described in Second switch pipe.
- A kind of 11. winding driving circuit control method, it is characterised in that including：Transformer process auxiliary drive winding, negater circuit and power driving circuit；By the output end of transformer process auxiliary drive winding respectively with the first switch pipe and negater circuit input in secondary circuit Connection, and the negater circuit output end is connected with power driving circuit input, and the power driving circuit is defeated Go out end to be connected with the second switch pipe in the secondary circuit；The voltage of main transformer in the transformer process auxiliary drive winding coupled primary circuit obtains the electricity of positive and negative checker Press signal；The first switch pipe is driven for positive voltage signal by transformer process auxiliary drive winding output；After reverse process being carried out by the negater circuit to transformer process auxiliary drive winding output for negative voltage signal The second switch pipe is driven by the power driving circuit.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610674388.2A CN107769562A (en) | 2016-08-16 | 2016-08-16 | Winding driving circuit and its control method, switching power circuit |
| PCT/CN2017/094483 WO2018032949A1 (en) | 2016-08-16 | 2017-07-26 | Self-driving winding circuit and control method thereof, and switching power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610674388.2A CN107769562A (en) | 2016-08-16 | 2016-08-16 | Winding driving circuit and its control method, switching power circuit |
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| CN107769562A true CN107769562A (en) | 2018-03-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610674388.2A Pending CN107769562A (en) | 2016-08-16 | 2016-08-16 | Winding driving circuit and its control method, switching power circuit |
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| Country | Link |
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| CN (1) | CN107769562A (en) |
| WO (1) | WO2018032949A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116094337A (en) * | 2023-01-21 | 2023-05-09 | 天航长鹰(江苏)科技有限公司 | Brick module power supply based on active clamp forward topology |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI711244B (en) * | 2019-09-27 | 2020-11-21 | 通嘉科技股份有限公司 | Power supplies |
| CN111953216B (en) * | 2020-08-25 | 2024-07-19 | 广州金升阳科技有限公司 | Driving circuit of synchronous rectification circuit and driving method thereof |
| CN114537169A (en) * | 2022-03-28 | 2022-05-27 | 华人运通(山东)科技有限公司 | High-power wireless charger and vehicle-mounted end power supply circuit and control method thereof |
| CN117997316A (en) * | 2022-10-28 | 2024-05-07 | 苏州纳芯微电子股份有限公司 | Solid state relay circuit and electronic device |
| CN116418219A (en) * | 2023-01-13 | 2023-07-11 | 哈尔滨工业大学（深圳） | Isolation switch power supply design of proportion balance structure with low common mode electromagnetic noise |
| CN117498704B (en) * | 2023-12-29 | 2024-03-29 | 威胜能源技术股份有限公司 | Flyback power supply circuit for charging pile of charging and replacing cabinet and use method of flyback power supply circuit |
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| US5430640A (en) * | 1992-04-30 | 1995-07-04 | Samsung Electro-Mechanics Co., Ltd. | Power supply |
| CN101237189A (en) * | 2007-01-31 | 2008-08-06 | 力博特公司 | Positive activation converter |
| CN203278620U (en) * | 2013-05-10 | 2013-11-06 | 雅达电子国际有限公司 | Isolation drive circuit with clamping function |
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| CN1312835C (en) * | 2003-06-19 | 2007-04-25 | 艾默生网络能源有限公司 | BUCK convertor containing synchronous rectitication drive circuit |
| JP4683997B2 (en) * | 2005-05-09 | 2011-05-18 | 新電元工業株式会社 | Synchronous rectifier converter |
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- 2016-08-16 CN CN201610674388.2A patent/CN107769562A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US5430640A (en) * | 1992-04-30 | 1995-07-04 | Samsung Electro-Mechanics Co., Ltd. | Power supply |
| CN101237189A (en) * | 2007-01-31 | 2008-08-06 | 力博特公司 | Positive activation converter |
| CN203278620U (en) * | 2013-05-10 | 2013-11-06 | 雅达电子国际有限公司 | Isolation drive circuit with clamping function |
| CN104506044A (en) * | 2015-01-16 | 2015-04-08 | 深圳威迈斯电源有限公司 | Synchronization rectifier driving circuit of convertor |
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| CN116094337A (en) * | 2023-01-21 | 2023-05-09 | 天航长鹰(江苏)科技有限公司 | Brick module power supply based on active clamp forward topology |
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| WO2018032949A1 (en) | 2018-02-22 |
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