CN109391141A - The continuous step-up dc-dc converter of input and output electric current - Google Patents
The continuous step-up dc-dc converter of input and output electric current Download PDFInfo
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- CN109391141A CN109391141A CN201811336723.3A CN201811336723A CN109391141A CN 109391141 A CN109391141 A CN 109391141A CN 201811336723 A CN201811336723 A CN 201811336723A CN 109391141 A CN109391141 A CN 109391141A
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- electronic switch
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- diode
- electric current
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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
- H02M3/06—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using resistors or capacitors, e.g. potential divider
- H02M3/07—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using resistors or capacitors, e.g. potential divider using capacitors charged and discharged alternately by semiconductor devices with control electrode, e.g. charge pumps
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
A kind of continuous step-up dc-dc converter of input and output electric current, including inductance L1, diode D1, capacitor C1, resistance R1, 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 resistance R1 simultaneously, load the other end of Z while the other end with capacitor Co, the other end of resistance R1 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 continuous booster type of input and output electric current
DC-DC converter, can be realized that output and input electric current continuous and output and input voltage same polarity, expand DC-DC transformation
The type of device.
The technical solution adopted by the present invention to solve the technical problems is:
A kind of continuous step-up dc-dc converter of input and output electric current, including inductance L1, diode D1, capacitor C1,
Resistance R1, capacitor Co and 1 electronic switch, the electronic switch have port a and port b, one end of inductance L1 and direct current
The anode of source Vi 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, diode
The cathode of D1 is connected with one end of one end of capacitor C1, one end of capacitor Co and load Z simultaneously, and the port b of electronic switch is simultaneously
Be connected with one end of the other end of capacitor C1 and resistance R1, load the other end of Z simultaneously with the other end of capacitor Co, resistance R1
The other end is connected with the negative terminal of DC power supply Vi.
In the present invention, when electronic switch cut-off, diode D1 conducting, DC power supply Vi, inductance L1, diode D1, electricity
Hold C1 and resistance R1 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 resistance R1 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 program 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 and inductance L1 at one
Energy storage is synergistically carried out in duty cycle and releases energy, not only realizes boosting inverter, but also realizes that continuous input current, output electric current are continuous
It is constant with output voltage polarity.
Beneficial effects of the present invention are mainly manifested in: the continuous step-up dc-dc converter of the input and output electric current
Circuit structure is simple, have output and input that electric current is continuous, output is consistent with input voltage polarity, output voltage Vo is greater than or
Equal to the operating characteristic of direct current power source voltage 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, the continuous step-up dc-dc converter of a kind of input and output electric current, including inductance L1, two
Pole pipe D1, capacitor C1, resistance R1, capacitor Co and 1 electronic switch, the electronic switch have port a and port b, inductance L1
One end be connected with the anode of DC power supply Vi, the other end of inductance L1 simultaneously with the anode of diode D1 and the end of electronic switch
Mouth a is connected, and 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 cutting
The port b of pass is connected with one end of the other end of capacitor C1 and resistance R1 simultaneously, and the other end for loading Z is another with capacitor Co simultaneously
One end, resistance R1 the other end be connected with the negative terminal of DC power supply Vi.
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), entire steady operation process includes 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
Resistance R1 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 and resistor current iR1 decline, and output electric current io (refers to and flows into capacitor Co and load Z
Electric current) ripple codetermined by ii and iR1.
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 resistance R1 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 resistor current iR1 are equal
Rise, the ripple of output electric current io (referring to the electric current for flowing into capacitor Co and loading Z) is codetermined by ii and iR1.
Fig. 2 is the simulation work waveform diagram of embodiment.As shown in Figure 2, the input current ii of embodiment is continuous, resistor current
IR1 is continuous, and output electric current io is continuous and ripple very little, capacitance voltage vC1 are slightly less than output voltage Vo, 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 continuous step-up dc-dc converter of input and output electric current, it is characterised in that: the input and output electric current is equal
Continuous step-up dc-dc converter includes inductance L1, diode D1, capacitor C1, resistance R1, capacitor Co and 1 electronic switch,
The electronic switch has port a and port b, and one end of inductance L1 is connected with the anode of DC power supply Vi, and inductance L1's is another
End is connected with the port a of the anode of diode D1 and electronic switch simultaneously, the cathode of diode D1 and meanwhile with one end of capacitor C1,
One end of capacitor Co is connected with one end of load Z, the port b of electronic switch and meanwhile with the other end of capacitor C1 and resistance R1 one
End is connected, and loads the other end of Z while the negative terminal phase with the other end of capacitor Co, the other end of resistance R1 and DC power supply Vi
Even.
2. the continuous step-up dc-dc converter of input and output electric current as described in claim 1, it is characterised in that: described
Electronic switch uses the electronic switch of one-way conduction, i.e., its electric current is flowed into from port a and from port b when the electronic switch is connected
Outflow.
3. the continuous step-up dc-dc converter of input and output electric current as claimed in claim 2, it is characterised in that: described
Electronic switch includes diode D2, N-type metal-oxide-semiconductor M1 and 1 controller, and the controller has port vg, the sun of diode D2
Pole is connected with the port a of the electronic switch, and the cathode of diode D2 is connected with the drain electrode of N-type metal-oxide-semiconductor M1, N-type metal-oxide-semiconductor M1's
Source electrode is connected with the port b of the electronic switch, and the gate pole of N-type metal-oxide-semiconductor M1 is connected with the port vg of the controller.
4. step-up dc-dc converter as claimed in claim 3, it is characterised in that: the controller controls core using power supply
Piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811336723.3A CN109391141A (en) | 2018-11-12 | 2018-11-12 | The continuous step-up dc-dc converter of input and output electric current |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811336723.3A CN109391141A (en) | 2018-11-12 | 2018-11-12 | The continuous step-up dc-dc converter of input and output electric current |
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| CN109391141A true CN109391141A (en) | 2019-02-26 |
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| CN201811336723.3A Pending CN109391141A (en) | 2018-11-12 | 2018-11-12 | The continuous step-up dc-dc converter of input and output electric current |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111817550A (en) * | 2020-06-01 | 2020-10-23 | 湖南大学 | Low EMI Boost Converter |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108183609A (en) * | 2018-01-04 | 2018-06-19 | 东南大学 | A kind of cascade connection type DC/DC converters of the asymmetric boosting unit of photovoltaic system |
| CN108736715A (en) * | 2018-07-02 | 2018-11-02 | 浙江工业大学 | Buck DC-DC converter |
| CN211296564U (en) * | 2018-11-12 | 2020-08-18 | 浙江工业大学 | A step-up DC-DC converter with continuous input and output currents |
| CN211296563U (en) * | 2018-11-12 | 2020-08-18 | 浙江工业大学 | Step-up DC-DC converter with continuous input and output currents |
-
2018
- 2018-11-12 CN CN201811336723.3A patent/CN109391141A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108183609A (en) * | 2018-01-04 | 2018-06-19 | 东南大学 | A kind of cascade connection type DC/DC converters of the asymmetric boosting unit of photovoltaic system |
| CN108736715A (en) * | 2018-07-02 | 2018-11-02 | 浙江工业大学 | Buck DC-DC converter |
| CN211296564U (en) * | 2018-11-12 | 2020-08-18 | 浙江工业大学 | A step-up DC-DC converter with continuous input and output currents |
| CN211296563U (en) * | 2018-11-12 | 2020-08-18 | 浙江工业大学 | Step-up DC-DC converter with continuous input and output currents |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111817550A (en) * | 2020-06-01 | 2020-10-23 | 湖南大学 | Low EMI Boost Converter |
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Application publication date: 20190226 |