CN109494979A - A kind of step-up dc-dc converter - Google Patents
A kind of step-up dc-dc converter Download PDFInfo
- Publication number
- CN109494979A CN109494979A CN201811336739.4A CN201811336739A CN109494979A CN 109494979 A CN109494979 A CN 109494979A CN 201811336739 A CN201811336739 A CN 201811336739A CN 109494979 A CN109494979 A CN 109494979A
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- Prior art keywords
- port
- inductance
- electronic switch
- capacitor
- diode
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- 239000003990 capacitor Substances 0.000 claims abstract description 32
- 239000004065 semiconductor Substances 0.000 claims description 18
- 230000005611 electricity Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
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
-
- 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
- H02M1/14—Arrangements for reducing ripples from dc input or output
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
A kind of step-up dc-dc converter, including inductance L1, diode D1, capacitor C1, inductance L2, capacitor Co and 1 electronic switch, the electronic switch has port a and port b, one end of inductance L1 is connected with the anode of DC power supply Vi, the other end of inductance L1 is connected with the port a of the anode of diode D1 and electronic switch simultaneously, the cathode of diode D1 one end with capacitor C1 simultaneously, one end of capacitor Co is connected with one end of load Z, the port b of electronic switch is connected with one end of the other end of capacitor C1 and inductance L2 simultaneously, load the other end of Z while the other end with capacitor Co, the other end of inductance L2 is connected with the negative terminal of DC power supply Vi.The present invention has following operating characteristic: it is continuous to output and input electric current, and output voltage is greater than or equal to direct current power source voltage and same polarity.
Description
Technical field
The present invention relates to DC-DC (DC-DC) converter, especially one kind, to output and input electric current continuous and input
With the step-up dc-dc converter of output voltage same polarity, the direct current that basic unit sets up multi input and multi output can be used as
Source system, such as: DC power supplier parallel system, LED array drive system, distributed photovoltaic power generation system.
Background technique
The existing basic DC-DC converter with boost function includes Boost, One Buck-Boost converter body, Cuk
Converter, Sepic converter and Zeta converter.As listed in table 1, in the case where not considering output capacitance, above-mentioned this 5 kinds tools
There is the basic DC-DC converter of boost function to be all unsatisfactory for " it is continuous and output and input voltage homopolarity outputting and inputting electric current
The requirement of property ".
Table 1.
Summary of the invention
In order to overcome the existing basic DC-DC converter with boost function to be all unsatisfactory for " outputting and inputting electric current and connecting
It is continuous and output and input voltage same polarity " desired deficiency, the present invention provides a kind of step-up dc-dc converter, can be realized
It is continuous and output and input voltage same polarity to output and input electric current, expands the type of DC-DC converter.
The technical solution adopted by the present invention to solve the technical problems is:
A kind of step-up dc-dc converter, including inductance L1, diode D1, capacitor C1, inductance L2, capacitor Co and 1 electricity
Sub switch, the electronic switch have port a and port b, and one end of inductance L1 is connected with the anode of DC power supply Vi, inductance L1
The other end be connected simultaneously with the port a of the anode of diode D1 and electronic switch, the cathode of diode D1 at the same with capacitor C1
One end, capacitor Co one end be connected with one end of load Z, the port b of electronic switch while the other end and electricity with capacitor C1
Feel L2 one end be connected, load Z the other end simultaneously with the other end of capacitor Co, the other end of inductance L2 and DC power supply Vi
Negative terminal is connected.
In the present invention, when electronic switch cut-off, diode D1 conducting, DC power supply Vi, inductance L1, diode D1, electricity
Hold C1 and inductance L2 and constitute a circuit, DC power supply Vi, inductance L1, diode D1, capacitor Co and load Z constitute another time
Road.
When electronic switch conducting, diode D1 cut-off, DC power supply Vi, inductance L1, electronic switch and inductance L2 are constituted
One circuit, DC power supply Vi, inductance L1, electronic switch, capacitor C1, capacitor Co and load Z constitute another circuit.
Further, the electronic switch uses the electronic switch of one-way conduction, i.e., its electric current is from end when electronic switch is connected
Mouth a is flowed into and is flowed out from port b.The preferred embodiment is electric current reflux in order to prevent.
Further, the electronic switch includes diode D2, N-type metal-oxide-semiconductor M1 and 1 controller, the control utensil
There is port vg, the anode of diode D2 is connected with the port a of the electronic switch, and the cathode of diode D2 is with N-type metal-oxide-semiconductor M1's
Drain electrode is connected, and the source electrode of N-type metal-oxide-semiconductor M1 is connected with the port b of the electronic switch, the gate pole of N-type metal-oxide-semiconductor M1 and the control
The port vg of device is connected.
The controller determines the working condition of N-type metal-oxide-semiconductor M1, and the controller uses power supply control chip.
Technical concept of the invention are as follows: reasonable disposition diode D1 and electronic switch enable capacitor C1, inductance L1 and inductance L2
Energy storage is synergistically carried out within a duty cycle and releases energy, had not only realized efficient boosting inverter, but also realizes that input current connects
Continuous, output electric current is continuously and output voltage polarity is constant.
Beneficial effects of the present invention are mainly manifested in: the step-up dc-dc converter circuit structure is simple, has efficient
Rate, to output and input that electric current is continuous, output is consistent with input voltage polarity, output voltage Vo is greater than or equal to DC power supply electric
Press the operating characteristic of Vi.
Detailed description of the invention
Fig. 1 is circuit diagram of the invention.
Fig. 2 is the simulation work waveform diagram of the embodiment of the present invention.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.
Referring to Figures 1 and 2, a kind of step-up dc-dc converter, including inductance L1, diode D1, capacitor C1, inductance L2,
Capacitor Co and 1 electronic switch, the electronic switch have port a and port b, and one end of inductance L1 and DC power supply Vi are just
End is connected, and the other end of inductance L1 is connected with the port a of the anode of diode D1 and electronic switch simultaneously, the cathode of diode D1
Simultaneously with one end of capacitor C1, capacitor Co one end and load one end of Z and be connected, the port b of electronic switch at the same with capacitor C1
The other end be connected with one end of inductance L2, load Z the other end simultaneously with the other end of capacitor Co, the other end of inductance L2 and
The negative terminal of DC power supply Vi is connected.
Further, electric current reflux, the electronic switch use the electronic switch of one-way conduction, i.e. electronic switch in order to prevent
Its electric current is flowed into from port a and is flowed out from port b when conducting.
Further, the electronic switch includes diode D2, N-type metal-oxide-semiconductor M1 and 1 controller, the control utensil
There is port vg, the anode of diode D2 is connected with the port a of the electronic switch, and the cathode of diode D2 is with N-type metal-oxide-semiconductor M1's
Drain electrode is connected, and the source electrode of N-type metal-oxide-semiconductor M1 is connected with the port b of the electronic switch, the gate pole of N-type metal-oxide-semiconductor M1 and controller
Port vg is connected.
The controller determines the working condition of N-type metal-oxide-semiconductor M1, and the controller uses conventional power supply control chip,
Such as: UC3842.
When embodiment is in continuous conduction mode (CCM), L2 can be approximately a constant-current source, entire steady operation process packet
Containing following 2 stages.
Stage 1:N type metal-oxide-semiconductor M1 cut-off, diode D1 conducting, DC power supply Vi, inductance L1, diode D1, capacitor C1 and
Inductance L2 constitutes a circuit, and DC power supply Vi, inductance L1, diode D1, capacitor Co and load Z constitute another circuit.This
When, C1 charging, L1 puts magnetic.Input current ii, output electric current io (referring to the electric current for flowing into capacitor Co and loading Z) equal linear decline.
The conducting of stage 2:N type metal-oxide-semiconductor M1, diode D1 cut-off, diode D2 conducting, DC power supply Vi, inductance L1, two poles
Pipe D2, N-type metal-oxide-semiconductor M1 and inductance L2 constitute a circuit, DC power supply Vi, inductance L1, diode D2, N-type metal-oxide-semiconductor M1, electricity
Hold C1, capacitor Co and load Z constitutes another circuit.At this point, C1 discharges, L1 magnetizes.Input current ii and output electric current io are equal
Linear rise.
Fig. 2 is the simulation work waveform diagram of embodiment.As shown in Figure 2, the input current ii of embodiment is continuous, exports electric current
Io is continuous, the ripple very little of inductive current iL2, and output voltage Vo is greater than direct current power source voltage Vi, Vo and Vi same polarity.
Content described in this specification embodiment is only enumerating to the way of realization of inventive concept, protection of the invention
Range should not be construed as being limited to the specific forms stated in the embodiments, and protection scope of the present invention is also and in this field skill
Art personnel conceive according to the present invention it is conceivable that equivalent technologies mean.
Claims (4)
1. a kind of step-up dc-dc converter, it is characterised in that: the step-up dc-dc converter includes inductance L1, diode
D1, capacitor C1, inductance L2, capacitor Co and 1 electronic switch, the electronic switch have port a and port b, the one of inductance L1
End is connected with the anode of DC power supply Vi, the other end of inductance L1 and meanwhile with the anode of diode D1 and the port a of electronic switch
It is connected, the cathode of diode D1 is connected with one end of one end of capacitor C1, one end of capacitor Co and load Z simultaneously, electronic switch
Port b be connected simultaneously with one end of the other end of capacitor C1 and inductance L2, load the other end of Z while another with capacitor Co
It holds, the other end of inductance L2 is connected with the negative terminal of DC power supply Vi.
2. a kind of step-up dc-dc converter as described in claim 1, it is characterised in that: the electronic switch is using unidirectional
Its electric current is flowed into from port a and is flowed out from port b when the electronic switch of conducting, the i.e. electronic switch are connected.
3. a kind of step-up dc-dc converter as claimed in claim 2, it is characterised in that: the electronic switch includes two poles
Pipe D2, N-type metal-oxide-semiconductor M1 and 1 controller, the controller have port vg, the anode of diode D2 and the electronic switch
Port a be connected, the cathode of diode D2 is connected with the drain electrode of N-type metal-oxide-semiconductor M1, the source electrode of N-type metal-oxide-semiconductor M1 and the electronic cutting
The port b of pass is connected, and the gate pole of N-type metal-oxide-semiconductor M1 is connected with the port vg of the controller.
4. a kind of step-up dc-dc converter as claimed in claim 3, it is characterised in that: the controller uses power supply control
Coremaking piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811336739.4A CN109494979A (en) | 2018-11-12 | 2018-11-12 | A kind of step-up dc-dc converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811336739.4A CN109494979A (en) | 2018-11-12 | 2018-11-12 | A kind of step-up dc-dc converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109494979A true CN109494979A (en) | 2019-03-19 |
Family
ID=65694223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811336739.4A Pending CN109494979A (en) | 2018-11-12 | 2018-11-12 | A kind of step-up dc-dc converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109494979A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110190749A (en) * | 2019-06-18 | 2019-08-30 | 浙江工业大学 | The One Buck-Boost converter body of the current compensation branch containing output |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140098573A1 (en) * | 2012-10-05 | 2014-04-10 | National Tsing Hua University | Dc/dc converter |
| CN104410272A (en) * | 2014-11-07 | 2015-03-11 | 国家电网公司 | Improved secondary Boost converter |
| TW201642562A (en) * | 2015-05-29 | 2016-12-01 | Chang-Chi Lee | Low input-output current ripple buck-boost power converter |
| CN211296566U (en) * | 2018-11-12 | 2020-08-18 | 浙江工业大学 | Boost DC-DC converter |
-
2018
- 2018-11-12 CN CN201811336739.4A patent/CN109494979A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140098573A1 (en) * | 2012-10-05 | 2014-04-10 | National Tsing Hua University | Dc/dc converter |
| CN104410272A (en) * | 2014-11-07 | 2015-03-11 | 国家电网公司 | Improved secondary Boost converter |
| TW201642562A (en) * | 2015-05-29 | 2016-12-01 | Chang-Chi Lee | Low input-output current ripple buck-boost power converter |
| CN211296566U (en) * | 2018-11-12 | 2020-08-18 | 浙江工业大学 | Boost DC-DC converter |
Non-Patent Citations (1)
| Title |
|---|
| 赵马瑞卿等: "一种带耦合电感和充电泵的单级式高增益光伏微逆变器拓扑", 《西北工业大学学报》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110190749A (en) * | 2019-06-18 | 2019-08-30 | 浙江工业大学 | The One Buck-Boost converter body of the current compensation branch containing output |
| CN110190749B (en) * | 2019-06-18 | 2024-04-12 | 浙江工业大学 | Buck-Boost converter with output current compensation branch |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190319 |
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