CN106612072A - A switching power supply control circuit based on a BUCK topology and a solar energy controller - Google Patents
A switching power supply control circuit based on a BUCK topology and a solar energy controller Download PDFInfo
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- CN106612072A CN106612072A CN201510695531.1A CN201510695531A CN106612072A CN 106612072 A CN106612072 A CN 106612072A CN 201510695531 A CN201510695531 A CN 201510695531A CN 106612072 A CN106612072 A CN 106612072A
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- preset
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- time
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac 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
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac 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
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- Dc-Dc Converters (AREA)
Abstract
The invention discloses a switching power supply control circuit based on a BUCK topology. The BUCK topology comprises a first switching tube, a second switching tube, an inductor and a first capacitor, wherein a first end of the inductor is connected to an anode of a preset power supply via the first switching tube and is connected to a cathode of the preset power supply via the second switching tube; and a second end of the inductor is connected to the cathode of the preset power supply via the first capacitor; the switching power supply control circuit includes a mutual inductance detector, a zero-crossing comparator, a voltage detection circuit and a controller. When the zero-crossing comparator detects that the mutual inductance detector changes from a positive voltage to a zero voltage, the second switching tube is controlled to turn off; the first switching tube is controlled to turn on for the first preset time after the preset dead time; and the second switching tube is controlled to turn on for the second preset time after the preset dead time after the first switch is turned off. The invention also discloses the solar energy controller. The switching power supply control circuit of the invention reduces switching loss of the switching tube, and raises the working efficiency of the solar energy controller.
Description
Technical field
The present invention relates to technical field of new energies, more particularly to a kind of Switching Power Supply control based on BUCK topologys
Circuit processed and controller for solar.
Background technology
It is well known that the voltage-dropping type BUCK in existing controller for solar frequently with non-isolated is topological,
BUCK topologys include first switch pipe, second switch pipe, inductance and the first electric capacity, wherein the of inductance
Described in the Jing of one end, first switch pipe is connected with preset power positive pole, and second switch pipe is pre- with described described in Jing
The negative pole connection of power supply is put, the first electric capacity described in the second end Jing of the inductance is negative with the preset power
Pole connects.Controller output driving letter is typically with the control to first switch pipe and second switch pipe
Number, to control control second switch pipe conducting while first switch pipe is turned off, to realize continuous current mould
The working method of formula, but as electric capacity parasitic on switching tube has electric charge, therefore open to belong to and open firmly
It is logical, cause when opening, there is loss in electric energy, affect the work efficiency of controller for solar.
The content of the invention
Present invention is primarily targeted at provide it is a kind of based on BUCK topology switching power source control circuit and
Controller for solar, it is intended to reduce the switching loss on switching tube, improves the work effect of controller for solar
Rate.
To achieve these goals, the present invention provides a kind of Switching Power Supply control electricity based on BUCK topologys
Road, the BUCK topologys include first switch pipe, second switch pipe, inductance and the first electric capacity, wherein
Described in first end Jing of inductance, first switch pipe is connected with preset power positive pole, and second switch pipe described in Jing
It is connected with the negative pole of the preset power, the first electric capacity described in the second end Jing of the inductance is preset with described
The negative pole connection of power supply；The switching power source control circuit includes：Primary side winding concatenate with the inductance with
The zero passage ratio of the mutual inductance detector between the first electric capacity, the zero passage voltage for detecting the mutual inductance detector
Drive compared with device, the voltage detecting circuit for detecting the first electric capacity two ends output voltage and for exporting
Dynamic signal control first switch pipe and the controller of second switch pipe work；It is described to receive the zero passage
When comparator detects mutual inductance detector by positive voltage variation to no-voltage, the pipe shut-off of control second switch,
The first switch pipe is controlled after preset Dead Time and turns on the first preset time, and in first switch
Second switch pipe is controlled when the preset Dead Time after pipe shut-off and turns on the second preset time.
Preferably, the controller be additionally operable to according to the voltage detecting circuit detection output voltage and
Preset reference voltage calculates the time span of first preset time.
Preferably, the controller is additionally operable to according to first preset time, preset Dead Time and pre-
Put the time span for calculating second preset time cycle time；Or, according to the first preset time,
It is pre- that the output voltage of the input voltage of preset power and voltage detecting circuit detection calculates described second
Put the time span of time.
Preferably, it is described according to the first preset time, preset Dead Time and during cycle Time Calculation institute
The time span for stating the second preset time is specially：
Second preset time Ton1Meet：Ton1=Tperid-Ton-2Tdead, wherein TperidFor preset week
Time phase, TonFor the first preset time, TdeadFor preset Dead Time.
Preferably, it is described to be examined according to the first preset time, the input voltage of preset power and the voltage
The output voltage of slowdown monitoring circuit detection calculates the time span of second preset time and is specially：
Second preset time Ton1MeetWherein VinIn be the input
Voltage, VoFor the output voltage, TonFor the first preset time, K is constant.
Preferably, the switching power source control circuit also includes peaker, the input of the peaker
End is connected with the outfan of the zero-crossing comparator, and the outfan of the peaker is connected with the controller
Connect；When receiving the zero-crossing comparator and detecting mutual inductance detector by positive voltage variation to no-voltage, institute
Peaker output pulse signal is stated to controller；The controller is specifically for receiving the pulse
Determine the mutual inductance detector by positive voltage variation to no-voltage during signal.
Preferably, the first switch pipe is field effect transistor or GaN switching tubes.
Preferably, the second switch pipe is field effect transistor or GaN switching tubes.
Additionally, for achieving the above object, the present invention also provides a kind of controller for solar, the solar energy
Controller includes the switching power source control circuit based on BUCK topologys, and the BUCK topologys include first
Switching tube, second switch pipe, inductance and the first electric capacity, first switch wherein described in first end Jing of inductance
Pipe is connected with preset power positive pole, and second switch pipe is connected with the negative pole of the preset power described in Jing,
First electric capacity described in second end Jing of the inductance is connected with the negative pole of the preset power；The switch electricity
Source control circuit includes：Primary side winding concatenate and the mutual inductance detector between the inductance and the first electric capacity,
For detecting the zero-crossing comparator of the zero passage voltage of the mutual inductance detector, for detecting first electric capacity
The voltage detecting circuit of two ends output voltage and for output drive signal control first switch pipe and second
The controller of switching tube work；It is described to receive the zero-crossing comparator detection mutual inductance detector by positive electricity
When pressure changes to no-voltage, control second switch pipe shut-off, described in controlling after preset Dead Time
First switch pipe turn on the first preset time, and first switch pipe shut-off after through the preset dead band when
Between when control second switch pipe turn on the second preset time.
Preferably, the BUCK topologys include that be made up of principal phase BUCK and slave phase BUCK two intersect
The BUCK of wrong in parallel BUCK topologys or three-phase crisscross parallel is topological, principal phase BUCK and slave phase
BUCK is correspondingly provided with the switching power source control circuit.
The embodiment of the present invention is receiving the zero-crossing comparator detection mutual inductance detector T by positive voltage variation
During to no-voltage, the Q2 shut-offs of control second switch pipe are controlling described first after preset Dead Time
Switching tube Q1 turns on the first preset time, and through the preset dead band after first switch pipe Q1 shut-offs
Second switch pipe Q2 is controlled during the time and turns on the second preset time.It is achieved thereby that in first switch pipe Q1
Carry out with second switch pipe Q2 open-minded in the state of no-voltage, therefore effectively reduce opening on switching tube
Loss is closed, the work efficiency of controller for solar is improve.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to reality
Apply accompanying drawing to be used needed for example or description of the prior art to be briefly described, it should be apparent that, below
Accompanying drawing in description is only some embodiments of the present invention, for those of ordinary skill in the art,
On the premise of not paying creative work, can obtain other with the structure according to these accompanying drawings
Accompanying drawing.
Fig. 1 is circuit structure of the present invention based on one embodiment of switching power source control circuit of BUCK topologys
Schematic diagram；
Fig. 2 is first switch in one embodiment of switching power source control circuit of the present invention based on BUCK topologys
The voltage and curent change time sequence status exemplary plot of pipe, second switch pipe and inductance；
Fig. 3 is inductive current in one embodiment of switching power source control circuit of the present invention based on BUCK topologys
With switch controlled time-state method；
Fig. 4 is the knot of the BUCK topologys of biphase crisscross parallel in one embodiment of controller for solar of the present invention
Structure schematic diagram.
The realization of the object of the invention, functional characteristics and advantage will be done further in conjunction with the embodiments referring to the drawings
Explanation.
Specific embodiment
It should be appreciated that specific embodiment described herein is not used to limit only to explain the present invention
The fixed present invention.
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
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the present invention,
Rather than the embodiment of whole.Based on the embodiment in the present invention, those of ordinary skill in the art are not having
The every other embodiment obtained under the premise of making creative work, belongs to the scope of protection of the invention.
It is to be appreciated that the directional instruction of institute in the embodiment of the present invention (such as upper and lower, left and right, it is front,
It is only used for afterwards ...) explaining in the relative position under a certain particular pose (as shown in drawings) between each part
Relation, motion conditions etc. are put, if the particular pose changes, directionality indicates also corresponding
Ground changes therewith.
In addition, the description for being related to " first ", " second " etc. in the present invention is only used for describing purpose, and
It is not intended that indicating or implying its relative importance or the implicit number for indicating indicated technical characteristic
Amount.Thus, define " first ", the feature of " second " can be expressed or implicitly include at least one
Individual this feature.In addition, the technical scheme between each embodiment can be combined with each other, but must be with
Those of ordinary skill in the art can be implemented as basis, when conflicting or nothing occurs in the combination of technical scheme
Will be understood that when method is realized that the combination of this technical scheme is not present, also not in the protection model of application claims
Within enclosing.
The present invention provides a kind of switching power source control circuit based on BUCK topologys, with reference to Fig. 1, one
In embodiment, BUCK topology includes first switch pipe Q1, second switch pipe Q2, inductance L and the
One electric capacity C1, wherein described in first end Jing of inductance L, first switch pipe Q1 is connected with preset power positive pole,
And second switch pipe Q2 described in Jing is connected with the negative pole of the preset power U, the second of the inductance L
First electric capacity C1 described in the Jing of end is connected with the negative pole of the preset power U；The switching power source control circuit
Including：Primary side winding is concatenated and the mutual inductance detector T between the inductance L and the first electric capacity C1, is used for
Detect the zero-crossing comparator 10 of the zero passage voltage of the mutual inductance detector T, for detecting first electric capacity
The voltage detecting circuit 20 of two ends output voltage and for output drive signal control first switch pipe Q1
With the controller 30 of second switch pipe Q2 work；The controller 30 is controlling the first switch pipe
Q1 shut-off after, when receive the zero-crossing comparator 10 detection mutual inductance detector T by positive voltage variation to
During no-voltage, the Q2 shut-offs of control second switch pipe are opened described first is controlled after preset Dead Time
Close pipe Q1 and turn on the first preset time, and after first switch pipe Q1 shut-offs through the preset dead band when
Between when control second switch pipe Q2 turn on the second preset time.
Switching power source control circuit based on BUCK topologys provided in an embodiment of the present invention is mainly used in too
In positive energy electric power system, for the control of the synchronous rectification topological circuit to BUCK.In the present embodiment,
Above-mentioned preset power U is solaode, in order to stablize the output voltage of solaode, in preset electricity
The two ends of source U can be with one the second electric capacity C2 of parallel connection.
Specifically, the structure of above-mentioned first switch pipe Q1 and second switch pipe Q2 can be according to actual needs
It is configured, in the present embodiment, it is preferable that above-mentioned first switch pipe Q1 is field effect transistor or GaN
Switching tube；Above-mentioned second switch pipe Q2 is field effect transistor or GaN switching tubes.Below with first switch
It is described in detail as a example by pipe Q1 and second switch pipe Q2.
First the working condition of intermittent type switching tube is described in detail as follows：Operationally, first open
Close pipe Q1, the electric current of second switch pipe Q2 and inductance L and voltage sequential as shown in Figure 2.In fig. 2
Voltage value changes sequential V between the first switch pipe Q1 grids of record and source electrodegsQ1, second switch pipe Q2
Voltage value changes sequential V between grid and source electrodegsQ2, first switch pipe Q1 drain electrode and source electrode between voltage
Value changes sequential VdsQ1, first switch pipe Q1 drain electrode and source electrode between electric current value changes sequential VdsQ1,
Electric current value changes sequential V between two switching tube Q2 drain electrodes and source electrodedsQ2And inductance L curent change when
Sequence iL.Specifically, as illustrated, operationally, first switch pipe Q1 closings are controlled at the t1 moment,
The voltage in junction capacity in second switch pipe Q2 is equal to the input voltage vin of preset power；In t1 to t2
In time period, first switch pipe Q1 charges, second switch pipe Q2 electric discharges, (little after a period of time
In equal to t2-t1) the junction capacity voltage of first switch pipe Q1 is Vin, the junction capacity of second switch pipe Q2
Voltage is 0；Second switch pipe Q2 conductings are controlled at the t2 moment, now inductance L is discharged, passed through
After a period of time, zero is reduced in the electric current of t3 moment inductance, then the anti-phase recoveries of second switch pipe Q2；
Maximum negative value is reached in t4 moment reverse recovery currents, now the electricity in first switch pipe Q1 junction capacity
Press as input voltage vin, then first switch pipe Q1 electric discharges, second switch pipe Q2 chargings, Jing Guoyi
After the section time, the voltage on first switch pipe Q1 is reduced to zero, can now realize first switch pipe Q1's
No-voltage is open-minded.
But for controller output pwm signal controls first switch pipe Q1's and second switch pipe Q2
The setting of dutycycle and sequential, in the present embodiment, using on above-mentioned mutual inductance detector T detection inductance L
Curent change state, as generation negative voltage (i.e. mutual inductance detector T on detection mutual inductance detector T vice-side windings
By positive voltage variation to no-voltage) when, zero-crossing comparator will occur trigging signal (such as from incipient low
Level is changed into high level, i.e. rising edge turnover).When controller detects the trigging signal, meter can be controlled
When device timing, with delay time reach above-mentioned Dead Time when, control pwm signal in first switch pipe
The junction capacity voltage of Q1 opens first switch pipe Q1 when dropping to 0.
It should be noted that controller can for digital signal processor (DSP), single-chip microcomputer or other
Microprocessor.Its effect includes detection pulse signal P1, sampling and outputting voltage and carries out loop calculating, defeated
Go out PWM ripples to drive first switch pipe Q1 and second switch pipe Q2.By the TZ carried on DSP
Module (Region control is controlled by the rising edge or trailing edge of detection pulse), it is possible to achieve
Automatically triggering PWM's is open-minded, and the no-voltage for controlling first switch pipe Q1 is open-minded.Above-mentioned first is preset
The calculation of time and the second preset time can be configured according to actual needs, in the present embodiment,
Preferably, controller noted above is additionally operable to according to the output voltage of the detection of the voltage detecting circuit 20 and pre-
The reference voltage put calculates the time span of first preset time.
Specifically, in an algorithm interrupt cycle of DSP, by the defeated of the first electric capacity C1 two ends of sampling
Go out voltage (Vo), acquisition error signal is compared with preset reference voltage (Vref) inside controller；
Compensation network (or other types of compensation network) of the error signal through a pi regulator, its result
It is the ON time Ton (as above-mentioned first for controlling the pwm signal of first switch pipe Q1 conductings
Preset time).
In the present embodiment, the mode for calculating second switch pipe Q2 ON times can be for various, such as：
Controller noted above is additionally operable to be counted according to first preset time, preset Dead Time and during cycle time
Calculate the time span of second preset time；Or, according to the first preset time, preset power it is defeated
Enter voltage and the detection of the voltage detecting circuit 20 output voltage calculate second preset time when
Between length.
Specifically, it is above-mentioned according to the first preset time, preset Dead Time and during cycle Time Calculation institute
The time span for stating the second preset time is specially：
Second preset time Ton1Meet：Ton1=Tperid-Ton-2Tdead, wherein TperidFor preset week
Time phase, TonFor the first preset time, TdeadFor preset Dead Time.
In the present embodiment, TperidCan be obtained by the trapping module that DSP is carried, which is control second
The cycle time of the pwm signal of switching tube Q2 turn-on and turn-off.
It is above-mentioned to be examined according to the first preset time, the input voltage of preset power and the voltage detecting circuit
The output voltage of survey calculates the time span of second preset time and is specially：
Second preset time Ton1MeetWherein VinIn be the input
Voltage, VoFor the output voltage, TonFor the first preset time, K is constant.The size of the K values
Can be configured according to actual needs, in the present embodiment, it is preferable that the K is taken between 0.8～0.95
Any one value.
The embodiment of the present invention is receiving the zero-crossing comparator detection mutual inductance detector T by positive voltage variation
During to no-voltage, the Q2 shut-offs of control second switch pipe are controlling described first after preset Dead Time
Switching tube Q1 turns on the first preset time, and through the preset dead band after first switch pipe Q1 shut-offs
Second switch pipe Q2 is controlled during the time and turns on the second preset time.It is achieved thereby that in first switch pipe Q1
Carry out with second switch pipe Q2 open-minded in the state of no-voltage, therefore effectively reduce opening on switching tube
Loss is closed, the work efficiency of controller for solar is improve.
Further, based on above-described embodiment, in the present embodiment, above-mentioned switching power source control circuit is also wrapped
Peaker 40 is included, the input of the peaker 40 is connected with the outfan of the zero-crossing comparator 10
Connect, the outfan of the peaker 40 is connected with the controller 30；When receiving the zero passage ratio
When detecting mutual inductance detector T by positive voltage variation to no-voltage compared with device 10, the peaker 40 is exported
Pulse signal is to controller 30；The controller 30 is specifically for determining when the pulse signal is received
The mutual inductance detector is by positive voltage variation to no-voltage.
In the embodiment of the present invention, above-mentioned zero-crossing comparator 10 is mainly used in the electricity for detecting mutual inductance detector T
Pressure is compared with no-voltage, and when the voltage of mutual inductance detector T detections is positive voltage, zero-crossing comparator 10 will
Output low level, and when the voltage of mutual inductance detector T detections is negative voltage, zero-crossing comparator 10 will be produced
Raw level upset, now the input of peaker 40 will receive the level energizing signal of a rising edge,
Now peaker 40 will be converted to an output of pulse signal to controller 30 in outfan, this time control
Device processed 30 then can start-up study timing, after one Dead Time of time delay, control first switch pipe Q1 lead
It is logical.Specifically, as shown in figure 3, show in detail inductive current iLChange sequential, first switch pipe Q1
Pwm signal sequential, the pwm signal sequential of second switch pipe Q2, the output of peaker 40
The voltage sequential Vcomp relation of voltage sequential P1 and peaker input at end.Wherein Ton is represented
The ON time (i.e. above-mentioned first preset time) of first switch pipe Q1, TdeadFor above-mentioned preset dead band when
Between.
The present invention also provides a kind of controller for solar, and the controller for solar includes topological based on BUCK
Switching power source control circuit, should be can refer to based on the structure of switching power source control circuit of BUCK topologys
Above-described embodiment, will not be described here.Naturally, as the controller for solar of the present embodiment is adopted
With the technical scheme of the above-mentioned switching power source control circuit based on BUCK topologys, therefore the solar energy control
Utensil processed has the above-mentioned all of beneficial effect of switching power source control circuit based on BUCK topologys.
Additionally, when being operated in critical interrupted and continuous pattern, it is due under the conditions of identical output, related
The peak point current of power device is bigger than continuous current mode, for the problem, generally staggered using two
Or three staggered modes, i.e. BUCK topologys include two be made up of principal phase BUCK and slave phase BUCK
The BUCK of staggered BUCK topologys in parallel or three-phase crisscross parallel is topological, principal phase BUCK with
Slave phase BUCK is correspondingly provided with the switching power source control circuit.As shown in figure 4, with two it is staggered simultaneously
The BUCK topologys of connection are described in detail：Wherein Q1, Q2 and L are principal phase BUCK；Q11、Q21
It is slave phase BUCK with the corresponding branch roads of L1.
Interleaving and Transformer Paralleling can reduce the current stress of related power device, and can be by mutually supporting
The effect for disappearing so that the stricture of vagina of output current is dynamic to become less.Two is staggered, and the switching signal of slave phase is only needed
Will on the basis of principal phase 180 ° of time delay.But for VFC, due to current period value
It is uncertain, and main switch opens controlling for inductive current zero passage is received constantly, therefore can not
Directly realize that two is staggered by 180 ° of phase shift.
In the present embodiment, principal phase pulse signal P can be adopted1(pulse signal for being exported by peaker)
With from phase pulse signal P2(pulse signal for being exported by peaker) is through a logic gates list
First (such as DQ triggers) carries out output control；Wherein, principal phase pulse signal P1Triggering gate electricity
Road level puts 1, from phase pulse signal P2Triggering logic gates level sets to 0.So, logic gates list
In one PWM cycle of unit's output, high level represents the biphase phase contrast of principal and subordinate, remembers with Δ T；Cycle
Value represents the current operating cycle of principal phase, remembers with Tperid。
So, whenWhen, when illustrating that the phase contrast of principal and subordinate's phase is less than 180 °, computationally state
TonOn the basis of increase slave phase ON time, i.e. the ON time T of slave phaseon1=Ton+ΔTon；
WhenWhen, when illustrating that the phase contrast of principal and subordinate's phase is more than 180 °, computationally state TonBase
The ON time of slave phase, i.e. the ON time T of slave phase are reduced on plinthon1=Ton-ΔTon；
Using above method, through approaching for several cycles, the phase contrast of principal and subordinate's phase can be made to be close to 180 °,
Meet the requirement of lock phase.
Can also be byValue is used as error signal Terr, through the compensation loop of a pi regulator,
Slave phase phase difference T based on output valveon.Its stable state and dynamic characteristic are forced than stepping above in this way
Nearly method will be got well.
It is staggered or how staggered for three, just no longer describe here.Those skilled in the art holds very much
Easily it is derived by by the method for biphase crisscross parallel above.
The preferred embodiments of the present invention are these are only, the scope of the claims of the present invention is not thereby limited, it is every
The equivalent structure made using description of the invention and accompanying drawing content or equivalent flow conversion, or directly or
Connect and be used in other related technical fields, be included within the scope of the present invention.
Claims (10)
1. a kind of switching power source control circuit based on BUCK topologys, BUCK topology include the
Described in one switching tube, second switch pipe, inductance and the first electric capacity, wherein first end Jing of inductance, first opens
Close pipe to be connected with preset power positive pole, and second switch pipe be connected with the negative pole of the preset power described in Jing,
First electric capacity described in second end Jing of the inductance is connected with the negative pole of the preset power；Characterized in that,
The switching power source control circuit includes：Primary side winding concatenates mutual and the inductance and the first electric capacity between
Sense detector, the zero-crossing comparator of zero passage voltage for detecting the mutual inductance detector, for detecting
State the voltage detecting circuit of the first electric capacity two ends output voltage and open for output drive signal control first
Close the controller of pipe and the work of second switch pipe；It is described to receive the zero-crossing comparator detection mutual inductance inspection
Survey device by positive voltage variation to no-voltage when, control second switch pipe is turned off, through preset Dead Time
After control the first switch pipe and turn on the first preset time, and through described after the shut-off of first switch pipe
Second switch pipe is controlled during preset Dead Time and turns on the second preset time.
2., as claimed in claim 1 based on the switching power source control circuit that BUCK is topological, its feature exists
In the controller is additionally operable to output voltage and preset base according to voltage detecting circuit detection
Quasi- voltage calculates the time span of first preset time.
3., as claimed in claim 2 based on the switching power source control circuit that BUCK is topological, its feature exists
In when the controller is additionally operable to according to first preset time, preset Dead Time and during cycle
Between calculate the time span of second preset time；Or, according to the first preset time, preset power
Input voltage and the output voltage of voltage detecting circuit detection calculate second preset time
Time span.
4., as claimed in claim 3 based on the switching power source control circuit that BUCK is topological, its feature exists
In described second pre- according to the first preset time, preset Dead Time and during cycle Time Calculation
The time span for putting the time is specially：
Second preset time Ton1Meet：Ton1=Tperid-Ton-2Tdead, wherein TperidFor preset week
Time phase, TonFor the first preset time, TdeadFor preset Dead Time.
5., as claimed in claim 3 based on the switching power source control circuit that BUCK is topological, its feature exists
In described to be examined according to the first preset time, the input voltage of preset power and the voltage detecting circuit
The output voltage of survey calculates the time span of second preset time and is specially：
Second preset time Ton1MeetWherein VinIn be the input
Voltage, VoFor the output voltage, TonFor the first preset time, K is constant.
6., as claimed in claim 1 based on the switching power source control circuit that BUCK is topological, its feature exists
Also include peaker in, the switching power source control circuit, the input of the peaker with it is described
The outfan connection of zero-crossing comparator, the outfan of the peaker are connected with the controller；When connecing
When receiving the zero-crossing comparator and detecting mutual inductance detector by positive voltage variation to no-voltage, the differential is electric
Road output pulse signal is to controller；The controller is specifically for true when the pulse signal is received
The fixed mutual inductance detector is by positive voltage variation to no-voltage.
7., as claimed in claim 1 based on the switching power source control circuit that BUCK is topological, its feature exists
In the first switch pipe is field effect transistor or GaN switching tubes.
8., as claimed in claim 1 based on the switching power source control circuit that BUCK is topological, its feature exists
In the second switch pipe is field effect transistor or or GaN switching tubes.
9. a kind of controller for solar, it is characterised in that include such as any one of claim 1 to 8 institute
The switching power source control circuit based on BUCK topologys stated.
10. controller for solar as claimed in claim 9, it is characterised in that the BUCK is topological
Intersect including the BUCK topologys or three of the biphase crisscross parallel being made up of principal phase BUCK and slave phase BUCK
Wrong BUCK in parallel is topological, and principal phase BUCK and slave phase BUCK are correspondingly provided with the switch electricity
Source control circuit.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510695531.1A CN106612072A (en) | 2015-10-22 | 2015-10-22 | A switching power supply control circuit based on a BUCK topology and a solar energy controller |
| PCT/CN2016/080540 WO2016188300A1 (en) | 2015-10-22 | 2016-04-28 | Buck-topology-based switch power supply control circuit and solar controller |
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| CN201510695531.1A CN106612072A (en) | 2015-10-22 | 2015-10-22 | A switching power supply control circuit based on a BUCK topology and a solar energy controller |
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| CN106612072A true CN106612072A (en) | 2017-05-03 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109031104A (en) * | 2018-06-12 | 2018-12-18 | 南京国电南自电网自动化有限公司 | One kind being used for protective relaying device relay contact device for detecting performance |
| CN109361316A (en) * | 2018-10-12 | 2019-02-19 | 苏州汇川联合动力系统有限公司 | A kind of buck DC-DC converter and electronic equipment |
| CN111371304A (en) * | 2020-05-28 | 2020-07-03 | 深圳市永联科技股份有限公司 | Implementation method of soft switch in DCM (direct current) working mode for bidirectional DC/DC (direct current/direct current) |
| WO2020215293A1 (en) * | 2019-04-25 | 2020-10-29 | 华为技术有限公司 | Power supply circuit and power supply control method |
| CN112953211A (en) * | 2021-02-08 | 2021-06-11 | Oppo广东移动通信有限公司 | Voltage control method, switching circuit, storage medium, and computer program product |
| CN113037209A (en) * | 2021-03-09 | 2021-06-25 | 杭州中科先进技术研究院有限公司 | Voltage reduction and power optimization device of cadmium telluride photovoltaic module |
| CN113809920A (en) * | 2021-08-19 | 2021-12-17 | 广州金升阳科技有限公司 | BUCK converter control method |
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| CN108494249B (en) * | 2018-05-23 | 2023-08-04 | 刘谈平 | Buck/Buck-Boost converter circuit topology for non-isolated dynamic dual-mode switching and control system thereof |
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| CN109031104A (en) * | 2018-06-12 | 2018-12-18 | 南京国电南自电网自动化有限公司 | One kind being used for protective relaying device relay contact device for detecting performance |
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| CN109361316A (en) * | 2018-10-12 | 2019-02-19 | 苏州汇川联合动力系统有限公司 | A kind of buck DC-DC converter and electronic equipment |
| CN109361316B (en) * | 2018-10-12 | 2021-03-05 | 苏州汇川联合动力系统有限公司 | Step-down DC-DC converter and electronic equipment |
| WO2020215293A1 (en) * | 2019-04-25 | 2020-10-29 | 华为技术有限公司 | Power supply circuit and power supply control method |
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| CN111371304A (en) * | 2020-05-28 | 2020-07-03 | 深圳市永联科技股份有限公司 | Implementation method of soft switch in DCM (direct current) working mode for bidirectional DC/DC (direct current/direct current) |
| CN112953211A (en) * | 2021-02-08 | 2021-06-11 | Oppo广东移动通信有限公司 | Voltage control method, switching circuit, storage medium, and computer program product |
| CN113037209A (en) * | 2021-03-09 | 2021-06-25 | 杭州中科先进技术研究院有限公司 | Voltage reduction and power optimization device of cadmium telluride photovoltaic module |
| CN113809920A (en) * | 2021-08-19 | 2021-12-17 | 广州金升阳科技有限公司 | BUCK converter control method |
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| WO2016188300A1 (en) | 2016-12-01 |
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