CN107359791B - DC/DC conversion circuit - Google Patents
DC/DC conversion circuit Download PDFInfo
- Publication number
- CN107359791B CN107359791B CN201710609339.5A CN201710609339A CN107359791B CN 107359791 B CN107359791 B CN 107359791B CN 201710609339 A CN201710609339 A CN 201710609339A CN 107359791 B CN107359791 B CN 107359791B
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- inductor
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 27
- 239000003990 capacitor Substances 0.000 description 14
- 238000010586 diagram Methods 0.000 description 3
- 238000004146 energy storage Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- 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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
The utility model provides a DC/DC conversion circuit, includes input signal end, output signal end, first condenser, second condenser, inductor, first switch, second switch, third switch and fourth switch, wherein, input signal end first output pass through the first input of first switch, inductor and third switch connection output signal end, the both ends of first condenser connect two output of input signal end, the both ends of second condenser connect two input of output signal end, the first end of inductor is connected to the first end of second switch, the first input of output signal end is connected to the second end of second switch, the second end of inductor is connected to the first end of fourth switch, the second output of input signal end and the second input of output signal end are connected respectively to the second end of fourth switch. The invention can realize the aims of high boosting ratio, multiple topological structure conversion functions, multiple boosting ratios, low cost, simple control and the like.
Description
Technical field:
the invention relates to the field of electricity, in particular to a direct-current voltage conversion technology, and particularly relates to a DC/DC conversion circuit.
The background technology is as follows:
along with the rapid development of the power electronics industry, the requirements on the DC/DC conversion circuit are higher and higher, and particularly urgent requirements on high step-up ratio conversion, step-up and step-down conversion and the like of the DC/DC conversion circuit are provided, but the current DC/DC conversion circuit has the defects of low step-up ratio, single topological structure function and the like.
The invention comprises the following steps:
the invention aims to provide a DC/DC conversion circuit which aims to solve the technical problems of low step-up ratio and single topological structure function of the DC/DC conversion circuit in the prior art.
The DC/DC conversion circuit comprises an input signal end, an output signal end, a first capacitor, a second capacitor, an inductor, a first switch, a second switch, a third switch and a fourth switch, wherein the input signal end comprises a first output end and a second output end, the output signal end comprises a first input end and a second input end, the first output end of the input signal end is connected with the first input end of the output signal end through the first switch, the inductor and the third switch, two ends of the first capacitor are respectively connected with the first output end and the second output end of the input signal end, two ends of the second capacitor are respectively connected with the first input end and the second input end of the output signal end, the first end of the second switch is connected with the first input end of the inductor, the second end of the second switch is connected with the second end of the inductor through the third switch, the first end of the fourth switch is connected with the second input end of the inductor, and the second end of the fourth switch is respectively connected with the second input end of the output end of the fourth switch.
Further, the first output terminal of the input signal terminal, the first switch, the inductor, the third switch, and the first input terminal of the output signal terminal are sequentially connected in series. The first input end of the output signal end, the second switch, the inductor, the fourth switch and the second input end of the output signal end are sequentially connected in series.
Compared with the prior art, the invention has positive and obvious effects. The DC/DC conversion circuit comprises an input (output) signal end, an output (input) signal end, a first filter capacitor, an energy storage inductor, four switches and a second filter capacitor. The filtering and energy storage of the input voltage are realized through a first filtering capacitor, the voltage exchange is realized through an inductor and a switch, and the output voltage filtering and energy storage are realized through a second capacitor. The invention can realize the aims of high boosting ratio, multiple topological structure conversion functions and multiple boosting ratios.
Description of the drawings:
fig. 1 is a schematic diagram of a DC/DC conversion circuit of the present invention.
Fig. 2 is a schematic diagram of a first operation mode of the DC/DC conversion circuit of the present invention.
Fig. 3 is a schematic diagram of a second mode of operation of the DC/DC conversion circuit of the present invention.
The specific embodiment is as follows:
example 1:
as shown in fig. 1, the DC/DC conversion circuit of the present invention includes an input signal terminal W1, an output signal terminal W2, a first capacitor C1, a second capacitor C2, an inductor L1, a first switch S1, a second switch S2, a third switch S3, and a fourth switch S4, wherein the input signal terminal W1 includes a first input terminal A1 and a second output terminal A2, the output signal terminal W2 includes a first input terminal B1 and a second input terminal B2, the first output terminal A1 of the input signal terminal W1 is connected to the first input terminal B1 of the output signal terminal W2 through the first switch S1, the inductor L1 and the third switch S3, two ends of the first capacitor C1 are respectively connected to the first output terminal A1 and the second output terminal A2 of the input signal terminal W1, two ends of the second capacitor C2 are respectively connected to the first input terminal B1 and the second input terminal B2 of the output signal terminal W2, the second end C2 is connected to the second input terminal C2 through the first switch S1 and the second input terminal C2 of the second switch S2, and two ends of the second switch S2 are respectively connected to the first output terminal A1 and the second output terminal C2 of the second switch S2.
Further, the first output terminal A1 of the input signal terminal W1, the first switch S1, the inductor L1, the third switch S3, and the first input terminal B1 of the output signal terminal W2 are sequentially connected in series. The first input terminal B1 of the output signal terminal W2, the second switch S2, the inductor L1, the fourth switch S4, and the second input terminal B2 of the output signal terminal W2 are sequentially connected in series.
In the first operation mode of the DC/DC conversion circuit of the present invention shown in fig. 2, the first switch S1 and the third switch S3 are turned on to implement the pre-charging of the second capacitor C2, and after the voltage of the second capacitor C2 is established, the first switch S1 and the third switch S3 are turned off to turn on the second switch S2 and the fourth switch S4, so that the inductor L1 stores energy. And then the second switch S2 and the fourth switch S4 are turned off, so that the first switch S1 and the third switch S3 are turned on, the energy release of the inductor L1 is realized, the input voltage and the inductance voltage are overlapped, and the output boosting is realized by utilizing the volt-second product balance theorem.
The output and input step-up ratio may be derived from the first mode of operation as: (1-D)/(1-2*D), D is the duty cycle of the second switch S2 (fourth switch S4).
In the second operation mode of the DC/DC conversion circuit according to the present invention shown in fig. 3, the third switch S3 is first opened and the fourth switch S4 is first closed. And then the first switch S1 is turned off, so that the second switch S2 is turned on, and the inductor L1 stores energy. And then the second switch S2 is turned off, so that the first switch S1 is turned on, the energy release of the inductor is realized, and the output voltage rise and reduction is realized by utilizing the volt-second product balance theorem.
The output and input step-up ratios may be derived from the second mode of operation as: D/(1-D), D being the duty cycle of the second switch S2.
The invention realizes the functions of high step-up ratio conversion, step-up/step-down conversion and different step-up ratio conversion by different step-up ratios, and has the advantages of low cost, simple control and the like.
Claims (2)
1. The utility model provides a DC/DC conversion circuit, includes input signal end, output signal end, first condenser, second condenser, inductor, first switch, second switch, third switch and fourth switch, the input signal end include first output and second output, the output signal end include first input and second input, its characterized in that: the first output end of input signal end pass through the first input end of first switch, inductor and third switch connection output signal end, the both ends of first condenser connect the first output end and the second output end of input signal end respectively, the both ends of second condenser connect the first input end and the second input end of output signal end respectively, the first end of second switch connect the first end of inductor, the second end of second switch connect the first input end of output signal end to be connected with the second end of inductor through the third switch, the first end of fourth switch connect the second end of inductor, the second output end of input signal end and the second input end of output signal end are connected to the second end of fourth switch.
2. The DC/DC conversion circuit according to claim 1, wherein: the first output end of the input signal end, the first switch, the inductor, the third switch and the first input end of the output signal end are sequentially connected in series, and the first input end of the output signal end, the second switch, the inductor, the fourth switch and the second input end of the output signal end are sequentially connected in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710609339.5A CN107359791B (en) | 2017-07-25 | 2017-07-25 | DC/DC conversion circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710609339.5A CN107359791B (en) | 2017-07-25 | 2017-07-25 | DC/DC conversion circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107359791A CN107359791A (en) | 2017-11-17 |
| CN107359791B true CN107359791B (en) | 2023-05-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710609339.5A Active CN107359791B (en) | 2017-07-25 | 2017-07-25 | DC/DC conversion circuit |
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| Country | Link |
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| CN (1) | CN107359791B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111293882B (en) | 2019-01-28 | 2021-07-23 | 展讯通信（上海）有限公司 | Step-up/step-down circuit and control method |
| CN110086342B (en) * | 2019-05-23 | 2020-11-06 | 广州金升阳科技有限公司 | Switch converter and control method thereof |
| CN110719026A (en) * | 2019-09-11 | 2020-01-21 | 广州金升阳科技有限公司 | Boost converter and control method thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6232752B1 (en) * | 1999-11-10 | 2001-05-15 | Stephen R. Bissell | DC/DC converter with synchronous switching regulation |
| JP2007053883A (en) * | 2005-08-19 | 2007-03-01 | Denso Corp | Step-up-and-down chopper dc-dc converter |
| JP2012034516A (en) * | 2010-07-30 | 2012-02-16 | Asahi Kasei Electronics Co Ltd | Operation mode switching type dc-dc converter |
| CN102629823A (en) * | 2012-04-05 | 2012-08-08 | 安徽工业大学 | DC/DC (direct-current/direct-current) converter with high step-up ratio and low switch voltage press |
| WO2016000489A1 (en) * | 2014-06-30 | 2016-01-07 | 阳光电源股份有限公司 | Dc-dc converter with high transformer ratio |
| CN205356149U (en) * | 2016-01-27 | 2016-06-29 | 武汉合康动力技术有限公司 | DC -DC converter |
| CN206023578U (en) * | 2016-10-08 | 2017-03-15 | 山东大学 | A kind of non-isolated high step-up ratio DC converter of modified |
| CN207098942U (en) * | 2017-07-25 | 2018-03-13 | 华域汽车电动系统有限公司 | DC/DC translation circuits |
-
2017
- 2017-07-25 CN CN201710609339.5A patent/CN107359791B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6232752B1 (en) * | 1999-11-10 | 2001-05-15 | Stephen R. Bissell | DC/DC converter with synchronous switching regulation |
| JP2007053883A (en) * | 2005-08-19 | 2007-03-01 | Denso Corp | Step-up-and-down chopper dc-dc converter |
| JP2012034516A (en) * | 2010-07-30 | 2012-02-16 | Asahi Kasei Electronics Co Ltd | Operation mode switching type dc-dc converter |
| CN102629823A (en) * | 2012-04-05 | 2012-08-08 | 安徽工业大学 | DC/DC (direct-current/direct-current) converter with high step-up ratio and low switch voltage press |
| WO2016000489A1 (en) * | 2014-06-30 | 2016-01-07 | 阳光电源股份有限公司 | Dc-dc converter with high transformer ratio |
| CN205356149U (en) * | 2016-01-27 | 2016-06-29 | 武汉合康动力技术有限公司 | DC -DC converter |
| CN206023578U (en) * | 2016-10-08 | 2017-03-15 | 山东大学 | A kind of non-isolated high step-up ratio DC converter of modified |
| CN207098942U (en) * | 2017-07-25 | 2018-03-13 | 华域汽车电动系统有限公司 | DC/DC translation circuits |
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| CN107359791A (en) | 2017-11-17 |
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