CN107612333B - A kind of control circuit and method based on two-tube buck-boost converter - Google Patents
A kind of control circuit and method based on two-tube buck-boost converter Download PDFInfo
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- CN107612333B CN107612333B CN201711008951.3A CN201711008951A CN107612333B CN 107612333 B CN107612333 B CN 107612333B CN 201711008951 A CN201711008951 A CN 201711008951A CN 107612333 B CN107612333 B CN 107612333B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The invention proposes a kind of control circuit and method based on two-tube buck-boost converter, including sampling module, compare control module and drive module, which includes mode adjustment judging unit, voltage difference matching unit and self-adaptive controller.Its advantage is that: it can voluntarily judge the working condition of two-tube buck-boost converter, to control two-tube buck-boost converter work in boost mode, decompression mode or direct mode operation, and so that circuit is smoothly switched between boost mode and decompression mode by the transition of direct mode operation, thus the stability for the system of ensure that.
Description
Technical field
The present invention relates to solar energy unmanned plane power-supply system power management techniques fields, and in particular to one kind is based on two-tube liter
The control circuit and method of buck converter.
Background technique
Core as solar energy unmanned plane forms, and the main task of solar energy unmanned plane power-supply system is during flight
High-quality, highly reliable uninterruptable power are provided for unmanned plane, to meet the power demand of full mechanomotive force load.
Compared with previous spatial overlay, solar energy unmanned plane power-supply system has ultra-large, ultra high power, multipotency
The features such as source is comprehensive, not only needs to realize high-power output, but also in order to improve system stability and energy efficiency, becomes to power
More stringent requirements are proposed for the topological structure and its control strategy of parallel operation.
Since unmanned plane is influenced by ambient temperature in flight course, solar battery array operating voltage changes with environment temperature
And have greatly changed, therefore have the buck (Buck- of decompression (Buck) and (Boost) regulative mode that boosts concurrently simultaneously
Boost) converter is easy to implement the power conversion of wide input voltage range.
Buck (Buck-Boost) converter transfer efficiency has significant raising, but the topology itself is scarce there are one
Fall into: in the moment of decompression (Buck) and boosting (Boost) two kinds of regulative modes switching, the duty ratio of switching tube can be jumped,
This means that output voltage will generate biggish pulsation when regulative mode switches, it can not from the consideration of the stability angle of system
It takes.
In order to overcome drawbacks described above, original control strategy is improved, DC/DC circuit Buck mode with
A direct mode operation is added between Boost mode, thus using the transition of direct mode operation, and then propose a kind of two-tube buck
Converter, but how to realize smoothly switching between Buck mode, Boost mode and direct mode operation, there are no suitable controls
Method.
Summary of the invention
The purpose of the present invention is to provide a kind of control circuit and method based on two-tube buck-boost converter, can be voluntarily
Judge the working condition of two-tube buck-boost converter, control converter work is in Buck mode, Boost mode or straight-through mould
Formula, and so that converter is smoothly cut between Buck mode and Boost mode by the transition of direct mode operation
It changes, to ensure that the stability of system.
In order to achieve the above object, the invention is realized by the following technical scheme:
A kind of control circuit based on two-tube buck-boost converter, the input terminal connection of the two-tube buck-boost converter
Solar array, output end are separately connected battery group and load；It is characterized in that the control circuit includes:
Sampling module, for acquiring the input voltage U of two-tube buck-boost converterin, input current Iin, output capacitance electricity
Flow IcoAnd output voltage UoInformation；
Compare control module, includes mode adjustment judging unit, voltage difference matching unit and self-adaptive controller；
Mode adjustment judging unit is used to obtain output capacitance electric current I from sampling module under the control of voltage difference matching unitco's
Sample information, and output mode adjustment judging result gives voltage difference matching unit；Voltage difference matching unit is used for from sampling
Module obtains input voltage UinAnd output voltage UoSample information, and binding pattern adjustment judging unit mode adjustment sentence
Disconnected result exports the operating mode information of two-tube buck-boost converter, which includes buck-boost mode or straight-through mould
Formula；Self-adaptive controller obtains input voltage U according to sampling modulein, input current IinSample information and voltage difference
The operating mode information of matching unit exports corresponding boost mode control information or decompression mode control information or direct mode operation
Information is controlled to drive module；
Drive module, input terminal connect the output end for comparing control module, and output end connects boosted switch pipe Q1 and drop
Compress switch pipe Q2, boost mode control information or decompression mode control information to be exported according to self-adaptive controller or straight-through
Mode control information come drive two-tube buck-boost converter corresponding modes work.
The above-mentioned control circuit based on two-tube buck-boost converter, in which:
The two-tube buck-boost converter includes boosted switch pipe Q1 and step-down switching pipe Q2；As boosted switch pipe Q1
In normal open state, step-down switching pipe Q2 is in modulation condition, and two-tube buck-boost converter is in boost mode；Work as boosted switch
Pipe Q1 is in modulation condition, and step-down switching pipe Q2 is in normally off state, and two-tube buck-boost converter is in decompression mode；Work as boosting
Switching tube Q1 is in normal open state, and step-down switching pipe Q2 is in normally off state, and two-tube buck-boost converter is in direct mode operation.
The above-mentioned control circuit based on two-tube buck-boost converter, wherein in the comparison control module:
Wherein, the mode adjustment judging unit includes:
Integrating circuit, input terminal pass through the output capacitance electric current I that a switching tube S1 connection sampling module exportscoSampling letter
Breath；
First comparator, negative terminal input a default comparison voltage Δ V1, and anode connects the output end of integrating circuit；
Wherein, the voltage difference matching unit includes:
Absolute difference circuit, a pair of of input terminal are separately connected the input voltage U of sampling module outputin, output voltage Uo's
Sample information；
Adder, a pair of of input terminal are separately connected the output end of absolute difference circuit and the output end of first comparator；
Bleeder circuit, output end connect adaptation control circuit；
Second comparator, negative terminal connect the output end of adder, and anode inputs a default comparison voltage Δ V2, output end point
It Lian Jie not subtracter negative terminal, switching tube S1 and bleeder circuit input terminal.
The above-mentioned control circuit based on two-tube buck-boost converter, wherein the adaptation control circuit includes:
MPPT control circuit, a pair of of input terminal are separately connected the input voltage U of sampling module outputin, input current Iin's
Sample information, MPPT control circuit pass through to input voltage UinWith input current IinSampled value is adjusted, so that its product is most
Greatly；
Subtracter, anode connect the output end of MPPT control circuit, and negative terminal connects the output end of the second comparator；
It is maximized circuit, a pair of of input terminal is separately connected the output end of subtracter and the output end of bleeder circuit；
Third comparator, anode connect the output end for being maximized circuit, and negative terminal connects a voltage range at [V3, V4]
Triangular wave, output end connect drive module；
4th comparator, anode connect the output end for being maximized circuit, and negative terminal connects a voltage range at [V1, V2]
Triangular wave, output end connect drive module.
The above-mentioned control circuit based on two-tube buck-boost converter, in which:
V3 > V2.
A kind of control method based on two-tube buck-boost converter, it is characterized in that:
Sampling module acquires the input voltage U of two-tube buck-boost converterin, input current Iin, output capacitance electric current IcoWith
And output voltage UoInformation；
Mode adjustment judging unit obtains output capacitance electric current from sampling module under the control of voltage difference matching unit
IcoSample information, and output mode adjustment judging result give voltage difference matching unit；
Voltage difference matching unit obtains input voltage U from sampling moduleinAnd output voltage UoSample information, and tie
The mode adjustment judging result of syntype adjustment judging unit exports the operating mode information of two-tube buck-boost converter, the work
Pattern information includes buck-boost mode or direct mode operation；
Self-adaptive controller obtains input voltage U according to sampling modulein, input current IinSample information and electricity
The operating mode information of pressure difference matching unit exports corresponding boost mode control information or decompression mode control information or straight
Lead to mode control information to drive module；
Boost mode control information or decompression mode control information that drive module is exported according to self-adaptive controller or
Direct mode operation controls information to drive two-tube buck-boost converter to work in corresponding modes.
Compared with the prior art, the present invention has the following advantages:
1, the working condition of two-tube buck-boost converter can be voluntarily judged, to control converter work in Buck mould
Formula, Boost mode or direct mode operation, and by the transition of direct mode operation can effectively make converter Buck mode with
It is smoothly switched between Boost mode, to ensure that the stability of system；
2, simple and reliable, it can be realized by way of hardware circuit, to close on sky by representative of solar energy unmanned plane
Between aircraft energy supply provide with reference to and help.
Detailed description of the invention
Fig. 1 is the annexation figure of control circuit and two-tube buck-boost converter of the invention；
Fig. 2 is the topological circuit figure of the two-tube buck-boost converter in the embodiment of the present invention；
Fig. 3 is the circuit diagram of the control circuit in the embodiment of the present invention.
Specific embodiment
The present invention is further elaborated by the way that a preferable specific embodiment is described in detail below in conjunction with attached drawing.
Solar energy unmanned plane power-supply system is mainly by solar battery array, two-tube buck-boost converter, control circuit, lithium ion
The composition such as battery group.It is battery while solar battery array is load supplying when bearing power is smaller in illumination period
Group charging；When bearing power is larger or solar battery array output power deficiency, solar battery array and battery group, which are combined, to be negative
Carry power supply.In the shade phase, battery group is individually for load supplying.That is, as shown in Figure 1, the input terminal of two-tube buck-boost converter
Solar array is connected, output end is separately connected battery group and load.
As shown in Fig. 2, two-tube buck-boost converter generally comprises boosted switch pipe Q1 and step-down switching pipe Q2, two-tube liter
There are three types of operating modes for buck converter:
Boost mode: switching tube Q1 is in normal open state, and switching tube Q2 is in modulation condition；
Decompression mode: switching tube Q1 is in modulation condition, and switching tube Q2 is in normally off state；
Direct mode operation: switching tube Q1 is in normal open state, and switching tube Q2 is in normally off state.
Two-tube buck-boost converter work is in boosting or decompression mode, output capacitance CoutNormal charge and discharge, electric current
Value IcoIntegral in one cycle is zero；Two-tube buck-boost converter work is in direct mode operation, output capacitance CoutLocate always
In charge or discharge state, current value IcoIntegral, that is, voltage change be not zero.
As shown in figure 3, based on the above principles, the invention proposes a kind of, and the control based on two-tube buck-boost converter is electric
Road includes:
Sampling module, for acquiring the input voltage U of two-tube buck-boost converterin, input current Iin, output capacitance electricity
Flow IcoAnd output voltage UoInformation；
Compare control module, includes mode adjustment judging unit, voltage difference matching unit and self-adaptive controller；
Mode adjustment judging unit is used to obtain output capacitance electric current I from sampling module under the control of voltage difference matching unitco's
Sample information, and output mode adjustment judging result gives voltage difference matching unit；Voltage difference matching unit is used for from sampling
Module obtains input voltage UinAnd output voltage UoSample information, and binding pattern adjustment judging unit mode adjustment sentence
Disconnected result exports the operating mode information of two-tube buck-boost converter, which includes buck-boost mode or straight-through mould
Formula；Self-adaptive controller obtains input voltage U according to sampling modulein, input current IinSample information and voltage difference
The operating mode information of matching unit exports corresponding boost mode control information or decompression mode control information or direct mode operation
Information is controlled to drive module；
Drive module, input terminal connect the output end for comparing control module, and output end connects boosted switch pipe Q1 and drop
Compress switch pipe Q2, boost mode control information or decompression mode control information to be exported according to self-adaptive controller or straight-through
Mode control information come drive two-tube buck-boost converter corresponding modes work.Drive module may include Buck (decompression) drive
Dynamic circuit and Boost (boosting) driving circuit.
In the comparison control module:
Wherein, the mode adjustment judging unit includes:
Integrating circuit, input terminal pass through the output capacitance electric current I that a switching tube S1 connection sampling module exportscoSampling letter
Breath；
First comparator COM1, negative terminal input a default comparison voltage Δ V1, and anode connects the output end of integrating circuit, Δ
V1 is selected according to requirement of engineering；
Wherein, the voltage difference matching unit includes:
Absolute difference circuit, a pair of of input terminal are separately connected the input voltage U of sampling module outputin, output voltage Uo's
Sample information；
Adder, a pair of of input terminal are separately connected the output of the output end and first comparator COM1 of absolute difference circuit
End；
Bleeder circuit, output end connect adaptation control circuit；
Second comparator COM2, negative terminal connect the output end of adder, and anode inputs a default comparison voltage Δ V2, output
End is separately connected subtracter negative terminal, switching tube S1 and bleeder circuit input terminal, and Δ V2 is selected according to requirement of engineering.
The adaptation control circuit includes:
MPPT control circuit, a pair of of input terminal are separately connected the input voltage U of sampling module outputin, input current Iin's
Sample information, MPPT control circuit pass through to input voltage UinWith input current IinSampled value is adjusted, so that its product is most
Greatly, even if solar battery array Maximum Power Output；
Subtracter, anode connect the output end of MPPT control circuit, and negative terminal connects the output end of the second comparator COM2；
It is maximized circuit, a pair of of input terminal is separately connected the output end of subtracter and the output end of bleeder circuit；
Third comparator COM3, anode, which connects, is maximized the output end of circuit, negative terminal connect a voltage range [V3,
V4] triangular wave, output end connect drive module；
4th comparator COM4, anode, which connects, is maximized the output end of circuit, negative terminal connect a voltage range [V1,
V2] triangular wave, output end connect drive module.In the present embodiment, V3 > V2.
The invention also provides a kind of control methods based on two-tube buck-boost converter, include:
Sampling module acquires the input voltage U of two-tube buck-boost converterin, input current Iin, output capacitance electric current IcoWith
And output voltage UoInformation；
Mode adjustment judging unit obtains output capacitance electric current from sampling module under the control of voltage difference matching unit
IcoSample information, and output mode adjustment judging result give voltage difference matching unit；
Voltage difference matching unit obtains input voltage U from sampling moduleinAnd output voltage UoSample information, and tie
The mode adjustment judging result of syntype adjustment judging unit exports the operating mode information of two-tube buck-boost converter, the work
Pattern information includes buck-boost mode or direct mode operation；
Self-adaptive controller obtains input voltage U according to sampling modulein, input current IinSample information and electricity
The operating mode information of pressure difference matching unit exports corresponding boost mode control information or decompression mode control information or straight
Lead to mode control information to drive module；
Boost mode control information or decompression mode control information that drive module is exported according to self-adaptive controller or
Direct mode operation controls information to drive two-tube buck-boost converter to work in corresponding modes.
The working principle of the invention is:
As input voltage UinWith output voltage UoAbsolute value of the difference be greater than Δ V2 when, converter work boost or drop
Die pressing type, the specific steps are as follows:
Step 1: the input of absolute difference circuit is input voltage UinSampled value and output voltage UoSampled value, input voltage
Sample UinWith output voltage UoSample rate is 1, and when the output of absolute difference circuit is greater than Δ V2, the output of adder is naturally larger than
Δ V2, anode input value Δ V2, the second comparator COM2 output greater than the second comparator COM2 is zero, bleeder circuit output
It is zero.
Step 2: the control signal of switch S1 is the output of the second comparator COM2, and the second comparator COM2 output zero is opened
Pipe S1 normal off to be closed, integrating circuit is caused not work, output is zero, and the negative terminal less than first comparator COM2 inputs Δ V2, the
One comparator COM1 output is zero.
The input signal of step 3:MPPT control circuit is input voltage UinSampling and input current IinSampling, MPPT control
The major function of circuit processed is by input voltage UinWith input current IinSampled value be adjusted so that its product is most
Greatly, even if solar battery array Maximum Power Output.Second comparator COM2 and bleeder circuit output are zero, MPPT control circuit
After subtracting zero by subtracter, with the output of original value, and the ratio of third comparator COM3 and the 4th is inputted by being maximized circuit
Compared with the anode of device COM4.
Step 4: the voltage range [V3, V4] of third comparator COM3 negative terminal triangular wave trig1, the 4th comparator negative terminal three
The voltage range [V1, V2] of angle wave trig2, setting V3 are greater than V2；
While guaranteeing solar battery array Maximum Power Output, output voltage is allowing step 5:MPPT control circuit
In the range of float up and down, the triangular wave of Auto-matching [V1, V2] and the triangular wave of [V3, V4] so that converter work exist
Boosting or decompression mode.As output voltage UoSubtract input voltage UinWhen greater than Δ V2, the output valve of MPPT control circuit is big
It is less than V4 in V3, third comparator COM3 exports PWM waveform, and is in modulation by Boost driving circuit regulating switch pipe Q2
State；4th comparator COM4 exports high level, is in normally open, converter by Buck driving circuit regulating switch pipe Q1
Work is in boost mode.As input voltage UinSubtract output voltage UoWhen greater than Δ V2, the output valve of MPPT control circuit is greater than
V1 is less than V2, and third comparator COM3 exports low level, is in normally off state by Boost driving circuit regulating switch pipe Q2；
4th comparator COM4 exports PWM waveform, is in modulation condition, converter work by Buck driving circuit regulating switch pipe Q1
In decompression mode.
As input voltage UinWith output voltage UinAbsolute value of the difference when being less than Δ V2, converter work in direct mode operation,
Specific step is as follows:
Step 1: the output of absolute difference circuit is less than Δ V2, while first comparator COM1 output is zero, adder
Output is less than Δ V2, therefore the second comparator COM2 exports high level.
Step 2: switching tube S1 closure, integrating circuit input signal is the output current sample of converter, therefore integrates electricity
The output on road is the voltage change for starting converter output capacitance this moment, when integrating circuit output valve is less than Δ V1, first
Comparator COM1 output is still zero, does not influence the output valve of adder.
Step 3: the second comparator COM2 exports high level, and the output valve of MPPT control circuit subtracts the second comparator COM2
Output valve after become zero.The output valve of second comparator COM2 is after bleeder circuit divides, by being maximized circuit output
To the anode of third comparator COM3 and the 4th comparator COM4.
Step 4: bleeder circuit output valve is greater than V2 and is less than V3, and therefore, third comparator COM3 exports low level, the 4th ratio
High level is exported compared with device COM4, Boost driving circuit control switch pipe Q2 is in normally off state, Buck driving circuit control switch
Pipe Q1 is in normal open state, at this point, buck-boost converter is in pass-through state, solar battery array is directly rear end power supply.
As input voltage UinWith output voltage UoAbsolute value of the difference be greater than Δ V2 again, converter works by direct mode operation
It is switched to boosting or decompression mode, the specific steps are as follows:
Under converter pass-through state, switching tube S1 closure, integrating circuit input signal is the output current sample of converter,
Therefore the output of integrating circuit is the voltage change for starting converter output capacitance this moment, i.e. the variation of converter output voltage
Value, when integrating circuit output valve is greater than Δ V1, first comparator COM1 exports high level, therefore adder exports high level,
The negative terminal voltage of second comparator COM2 is greater than Δ V2, and the second comparator COM2 output is zero, MPPT control module secondary control again
In boosting, perhaps decompression mode realizes converter by direct mode operation to boosting or decompression mode smoothly switches for circuit work.
It is discussed in detail although the contents of the present invention have passed through above preferred embodiment, but it should be appreciated that above-mentioned
Description is not considered as limitation of the present invention.After those skilled in the art have read above content, for of the invention
A variety of modifications and substitutions all will be apparent.
Claims (6)
1. a kind of control circuit based on two-tube buck-boost converter, the input terminal connection of the two-tube buck-boost converter is too
Positive energy cell array, output end are separately connected battery group and load；It is characterized in that, the control circuit includes:
Sampling module, for acquiring the input voltage U of two-tube buck-boost converterin, input current Iin, output capacitance electric current Ico
And output voltage UoInformation；
Compare control module, includes mode adjustment judging unit, voltage difference matching unit and self-adaptive controller；Mode
Judging unit is adjusted to be used to obtain output capacitance electric current I from sampling module under the control of voltage difference matching unitcoSampling
Information, and output mode adjustment judging result gives voltage difference matching unit；Voltage difference matching unit is used for from sampling module
Obtain input voltage UinAnd output voltage UoSample information, and binding pattern adjustment judging unit mode adjustment judge knot
Fruit exports the operating mode information of two-tube buck-boost converter, which includes buck-boost mode or direct mode operation；
Self-adaptive controller obtains input voltage U according to sampling modulein, input current IinSample information and voltage difference
Operating mode information with unit exports corresponding boost mode control information or decompression mode control information or direct mode operation control
Information processed is to drive module；
Drive module, input terminal connect the output end for comparing control module, and output end connection boosted switch pipe Q1 and decompression are opened
Pipe Q2 is closed, with the boost mode control information or decompression mode control information or direct mode operation exported according to self-adaptive controller
Information is controlled to drive two-tube buck-boost converter to work in corresponding modes.
2. the control circuit as described in claim 1 based on two-tube buck-boost converter, it is characterised in that:
The two-tube buck-boost converter includes boosted switch pipe Q1 and step-down switching pipe Q2；When boosted switch pipe Q1 is in
Normal open state, step-down switching pipe Q2 are in modulation condition, and two-tube buck-boost converter is in boost mode；As boosted switch pipe Q1
In modulation condition, step-down switching pipe Q2 is in normally off state, and two-tube buck-boost converter is in decompression mode；Work as boosted switch
Pipe Q1 is in normal open state, and step-down switching pipe Q2 is in normally off state, and two-tube buck-boost converter is in direct mode operation.
3. the control circuit as described in claim 1 based on two-tube buck-boost converter, which is characterized in that the comparison control
In molding block:
Wherein, the mode adjustment judging unit includes:
Integrating circuit, input terminal pass through the output capacitance electric current I that a switching tube S1 connection sampling module exportscoSample information；
First comparator, negative terminal input a default comparison voltage Δ V1, and anode connects the output end of integrating circuit；
Wherein, the voltage difference matching unit includes:
Absolute difference circuit, a pair of of input terminal are separately connected the input voltage U of sampling module outputin, output voltage UoSampling
Information；
Adder, a pair of of input terminal are separately connected the output end of absolute difference circuit and the output end of first comparator；
Bleeder circuit, output end connect self-adaptive controller；
Second comparator, negative terminal connect the output end of adder, and anode inputs a default comparison voltage Δ V2, and output end connects respectively
Connect subtracter negative terminal, switching tube S1 and bleeder circuit input terminal.
4. the control circuit as claimed in claim 3 based on two-tube buck-boost converter, which is characterized in that described is adaptive
Control unit includes:
MPPT control circuit, a pair of of input terminal are separately connected the input voltage U of sampling module outputin, input current IinSampling
Information, MPPT control circuit pass through to input voltage UinWith input current IinSampled value is adjusted, so that its product is maximum；
Subtracter, anode connect the output end of MPPT control circuit, and negative terminal connects the output end of the second comparator；
It is maximized circuit, a pair of of input terminal is separately connected the output end of subtracter and the output end of bleeder circuit；
Third comparator, anode connect the output end for being maximized circuit, and negative terminal connects a voltage range in the triangle of [V3, V4]
Wave, output end connect drive module；
4th comparator, anode connect the output end for being maximized circuit, and negative terminal connects a voltage range in the triangle of [V1, V2]
Wave, output end connect drive module.
5. the control circuit as claimed in claim 4 based on two-tube buck-boost converter, it is characterised in that:
V3 > V2.
6. a kind of control method based on two-tube buck-boost converter, it is characterised in that:
Sampling module acquires the input voltage U of two-tube buck-boost converterin, input current Iin, output capacitance electric current IcoAnd it is defeated
Voltage U outoInformation；
Mode adjustment judging unit obtains output capacitance electric current I from sampling module under the control of voltage difference matching unitco's
Sample information, and output mode adjustment judging result gives voltage difference matching unit；
Voltage difference matching unit obtains input voltage U from sampling moduleinAnd output voltage UoSample information, and combine mould
The mode adjustment judging result of formula adjustment judging unit exports the operating mode information of two-tube buck-boost converter, the operating mode
Information includes buck-boost mode or direct mode operation；
Self-adaptive controller obtains input voltage U according to sampling modulein, input current IinSample information and voltage difference
The operating mode information of matching unit exports corresponding boost mode control information or decompression mode control information or direct mode operation
Information is controlled to drive module；
The boost mode control information or decompression mode control information or lead directly to that drive module is exported according to self-adaptive controller
Mode control information come drive two-tube buck-boost converter corresponding modes work.
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Families Citing this family (7)
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|---|---|---|---|---|
| WO2020024200A1 (en) * | 2018-08-02 | 2020-02-06 | 深圳欣锐科技股份有限公司 | Direct current buck-boost circuit |
| CN108964197B (en) * | 2018-08-07 | 2020-11-17 | 深圳宝砾微电子有限公司 | Charging circuit and power supply device |
| CN109494976B (en) * | 2018-12-06 | 2020-01-21 | 福建海睿达科技有限公司 | Switching power supply and drive circuit thereof |
| CN111049360B (en) * | 2019-12-31 | 2021-05-18 | 广州金升阳科技有限公司 | Voltage reduction circuit and voltage reduction control method |
| CN111262434B (en) * | 2020-02-20 | 2022-03-29 | 上海南芯半导体科技股份有限公司 | Buck-boost DC-DC converter and control method |
| CN112467983B (en) * | 2020-12-16 | 2022-04-22 | 上海空间电源研究所 | Control circuit based on buck-boost synchronous regulator |
| CN114884354A (en) * | 2022-07-11 | 2022-08-09 | 禹创半导体(深圳)有限公司 | Direct-current power supply conversion control framework capable of being used for boosting or reducing voltage |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101212173A (en) * | 2006-12-29 | 2008-07-02 | 智原科技股份有限公司 | Control circuit and method for multi-mode switching boost/down rectifier |
| CN105006968A (en) * | 2015-08-12 | 2015-10-28 | 何官超 | Voltage stabilizing output circuit topology capable of adapting to wide range input |
| JP2017017982A (en) * | 2015-06-29 | 2017-01-19 | ローム株式会社 | Switching regulator and integrated circuit package |
| CN107070228A (en) * | 2016-12-16 | 2017-08-18 | 东南大学 | A kind of plasma resonant vibration power-supply system based on optimal energy allocation |
-
2017
- 2017-10-25 CN CN201711008951.3A patent/CN107612333B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101212173A (en) * | 2006-12-29 | 2008-07-02 | 智原科技股份有限公司 | Control circuit and method for multi-mode switching boost/down rectifier |
| JP2017017982A (en) * | 2015-06-29 | 2017-01-19 | ローム株式会社 | Switching regulator and integrated circuit package |
| CN105006968A (en) * | 2015-08-12 | 2015-10-28 | 何官超 | Voltage stabilizing output circuit topology capable of adapting to wide range input |
| CN107070228A (en) * | 2016-12-16 | 2017-08-18 | 东南大学 | A kind of plasma resonant vibration power-supply system based on optimal energy allocation |
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