CN110112911A - The buck DC-DC converter of the series-parallel switching working mode of capacitor containing resistance - Google Patents
The buck DC-DC converter of the series-parallel switching working mode of capacitor containing resistance Download PDFInfo
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- CN110112911A CN110112911A CN201910386720.9A CN201910386720A CN110112911A CN 110112911 A CN110112911 A CN 110112911A CN 201910386720 A CN201910386720 A CN 201910386720A CN 110112911 A CN110112911 A CN 110112911A
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- 239000003990 capacitor Substances 0.000 title claims abstract description 104
- 239000004065 semiconductor Substances 0.000 claims abstract description 43
- 238000004146 energy storage Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 6
- 230000005611 electricity Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000004088 simulation Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000009466 transformation Effects 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
- H02M3/156—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 with automatic control of output voltage or current, e.g. switching regulators
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
A kind of buck DC-DC converter of the series-parallel switching working mode of capacitor containing resistance, including resistance R1, capacitor C1, diode D2, diode D1, N-type metal-oxide-semiconductor M1, inductance L1, capacitor Co and 1 controller, the effect of resistance R1 is to ensure that the voltage vC1 of capacitor C1 is more than or less than input voltage Vi, when N-type metal-oxide-semiconductor M1 cut-off, diode D1 conducting, DC power supply Vi gives capacitor C1 and load Z to provide electric energy simultaneously, capacitor C1 energy storage, DC power supply Vi and capacitor C1 are worked with series model；When N-type metal-oxide-semiconductor M1 conducting, diode D1 cut-off, DC power supply Vi and capacitor C1 provide electric energy jointly for load Z, and capacitor C1 releases energy, and DC power supply Vi and capacitor C1 is worked with paralleling model.The present invention realizes that output and input electric current continuous and output and input voltage same polarity, has expanded the type of DC-DC converter.
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 buck 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 buck functionality includes Buck converter, 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 buck functionality 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
To overcome the existing basic DC-DC converter with buck functionality to be all unsatisfactory for " it is continuous outputting and inputting electric current
And output and input voltage same polarity " desired deficiency, the present invention provides a kind of series-parallel switch operating mould of the capacitor containing resistance
The buck DC-DC converter of formula, it is therefore intended that it is continuous and output and input voltage same polarity that realization outputs and inputs electric current,
Expand the type of DC-DC converter.
The technical solution adopted by the present invention to solve the technical problems is:
A kind of buck DC-DC converter of the series-parallel switching working mode of capacitor containing resistance includes resistance R1, capacitor
C1, diode D2, diode D1, N-type metal-oxide-semiconductor M1, inductance L1, capacitor Co and 1 controller, the controller have port
One end of vg, capacitor C1 are connected with the drain electrode of the anode of DC power supply Vi and N-type metal-oxide-semiconductor M1 simultaneously, and the other end of capacitor C1 is same
When be connected with the anode of one end of resistance R1 and diode D1, the cathode of the diode D1 source electrode and electricity with N-type metal-oxide-semiconductor M1 simultaneously
The one end for feeling L1 is connected, and the other end of inductance L1 is connected with one end of one end of capacitor Co and load Z simultaneously, and capacitor Co's is another
End is connected with the other end, the anode of diode D2 and the negative terminal of DC power supply Vi of load Z simultaneously, the cathode and electricity of diode D2
The other end for hindering R1 is connected, and the gate pole of N-type metal-oxide-semiconductor M1 is connected with the port vg of controller.
Further, the controller is power supply control chip.Conventional power supply control chip can be used in the controller.By
The working condition of controller decision N-type metal-oxide-semiconductor M1.
The effect of the resistance R1 is to ensure that the voltage vC1 of capacitor C1 is greater than input voltage Vi.Ignore leading for diode D2
Logical pressure drop, as vC1 > Vi, diode D2 conducting, the electric current for flowing through resistance R1 is greater than 0.
The steady operation process of the buck DC-DC converter of the series-parallel switching working mode of the capacitor containing resistance:
When N-type metal-oxide-semiconductor M1 cut-off, diode D1 conducting, DC power supply Vi gives capacitor C1 and load Z to provide electric energy, capacitor C1 simultaneously
Energy storage, DC power supply Vi and capacitor C1 are worked with series model；When N-type metal-oxide-semiconductor M1 conducting, diode D1 cut-off, direct current
Source Vi and capacitor C1 provides electric energy jointly for load Z, and capacitor C1 releases energy, and DC power supply Vi and capacitor C1 is worked with paralleling model.
A kind of buck DC-DC converter of the series-parallel switching working mode of capacitor containing resistance includes resistance R1, capacitor
C1, diode D2, diode D1, N-type metal-oxide-semiconductor M1, inductance L1, capacitor Co and 1 controller, the controller have port
One end of vg, resistance R1 are connected with the anode of DC power supply Vi, the other end of resistance R1 one end with capacitor C1 and N-type simultaneously
The drain electrode of metal-oxide-semiconductor M1 is connected, and the other end of capacitor C1 is connected with the anode of the cathode of diode D2 and diode D1 simultaneously, two poles
The cathode of pipe D1 is connected with one end of the source electrode of N-type metal-oxide-semiconductor M1 and inductance L1 simultaneously, the other end of inductance L1 and meanwhile with capacitor Co
One end be connected with one end of load Z, the other end of capacitor Co simultaneously with the other end of load Z, the anode of diode D2 and directly
The negative terminal of galvanic electricity source Vi is connected, and the gate pole of N-type metal-oxide-semiconductor M1 is connected with the port vg of controller.
Further, the controller is power supply control chip.Conventional power supply control chip can be used in the controller, by
The working condition of controller decision N-type metal-oxide-semiconductor M1.
The effect of the resistance R1 is to ensure that the voltage vC1 of capacitor C1 is less than input voltage Vi.Ignore leading for diode D2
Logical pressure drop, as vC1 < Vi, input current ii, that is, the electric current for flowing through resistance R1 is greater than 0.
The steady operation process of the buck DC-DC converter of the series-parallel switching working mode of the capacitor containing resistance:
When N-type metal-oxide-semiconductor M1 cut-off, diode D1 conducting, DC power supply Vi gives capacitor C1 and load Z to provide electric energy, capacitor C1 simultaneously
Energy storage, DC power supply Vi and capacitor C1 are worked with series model；When N-type metal-oxide-semiconductor M1 conducting, diode D1 cut-off, direct current
Source Vi and capacitor C1 provides electric energy jointly for load Z, and capacitor C1 releases energy, and DC power supply Vi and capacitor C1 is worked with paralleling model.
Technical concept of the invention are as follows: addition is made of C1, R1 and D2 on the basis of Buck converter circuit is topological
Branch, enabling DC power supply Vi is always that load Z provides electric energy, that is, realizes continuous input current, and maintains output electric current and connect
The continuous and constant operating characteristic of output voltage polarity.Meanwhile carrying out energy storage within a duty cycle using capacitor C1 and releasing energy,
Efficient decompression transformation can be achieved.
Beneficial effects of the present invention are mainly manifested in: the voltage-dropping type of the series-parallel switching working mode of the capacitor containing resistance
DC-DC converter circuit structure is simple, only include 1 controllable type device, can be used conventional power supply control chip formed it is applicable
Controller；With high efficiency, output and input that electric current is continuous, output is consistent with input voltage polarity, output voltage Vo is small
In or equal to input voltage Vi operating characteristic.
Detailed description of the invention
Fig. 1 is the circuit diagram of the embodiment of the present invention 1.
Fig. 2 is the simulation work waveform diagram of the embodiment of the present invention 1.
Fig. 3 is the circuit diagram of the embodiment of the present invention 2.
Fig. 4 is the simulation work waveform diagram of the embodiment of the present invention 2.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.
Embodiment 1
With reference to Fig. 1 and Fig. 2, a kind of buck DC-DC converter of the series-parallel switching working mode of capacitor containing resistance, packet
Include resistance R1, capacitor C1, diode D2, diode D1, N-type metal-oxide-semiconductor M1, inductance L1, capacitor Co and 1 controller, the control
Device processed has port vg, and one end of capacitor C1 is connected with the drain electrode of the anode of DC power supply Vi and N-type metal-oxide-semiconductor M1 simultaneously, capacitor
The other end of C1 is connected with the anode of one end of resistance R1 and diode D1 simultaneously, the cathode of diode D1 and meanwhile with N-type metal-oxide-semiconductor
The source electrode of M1 is connected with one end of inductance L1, and the other end of inductance L1 is connected with one end of one end of capacitor Co and load Z simultaneously,
The other end of capacitor Co is connected with the other end, the anode of diode D2 and the negative terminal of DC power supply Vi of load Z simultaneously, diode
The cathode of D2 is connected with the other end of resistance R1, and the gate pole of N-type metal-oxide-semiconductor M1 is connected with the port vg of controller.
Further, the controller is power supply control chip.Conventional power supply control chip can be used in the controller,
Such as: the combination of UC3842 and IR2110.The working condition of N-type metal-oxide-semiconductor M1 is determined by controller.
The effect of the resistance R1 is to ensure that the voltage vC1 of capacitor C1 is greater than input voltage Vi.Ignore the conduction voltage drop of D2,
As vC1 > Vi, D2 conducting, the electric current for flowing through resistance R1 is greater than 0.
When embodiment 1 is in continuous conduction mode, steady operation process includes following 2 stages.
The cut-off of stage 1:N type metal-oxide-semiconductor M1, diode D1 conducting, diode D2 conducting, DC power supply Vi, capacitor C1, two poles
Pipe D1, inductance L1, capacitor Co, load Z constitute a circuit, diode D2, resistance R1, diode D1, inductance L1, capacitor Co,
Load Z constitutes another circuit, capacitor C1 energy storage, and output electric current io (does not consider to flow through inductance L1's in the case where capacitor Co
Electric current) linear decline, the electric current for flowing through resistance R1 is only a part of io.DC power supply Vi and capacitor C1 are with series model work
Make.
Stage 2:N type metal-oxide-semiconductor M1 conducting, diode D1 cut-off, diode D2 conducting, DC power supply Vi, N-type metal-oxide-semiconductor M1,
Inductance L1, capacitor Co, load Z constitute a circuit, capacitor C1, N-type metal-oxide-semiconductor M1, inductance L1, capacitor Co, load Z, diode
D2, resistance R1 constitute another circuit, and capacitor C1 releases energy, and output electric current io (does not consider to flow through inductance in the case where capacitor Co
The electric current of L1) linear rise, the electric current for flowing through resistance R1 is only a part of io.DC power supply Vi and capacitor C1 are with paralleling model
Work.
Fig. 2 is the simulation work waveform diagram of embodiment 1.As shown in Figure 2, the input current ii of embodiment 1 is continuous, output electricity
Stream io is continuous, and the voltage vC1 of capacitor C1 is greater than input voltage Vi, and output voltage Vo is less than input voltage Vi, Vo and Vi same polarity.
Embodiment 2
With reference to Fig. 3 and Fig. 4, a kind of buck DC-DC converter of the series-parallel switching working mode of capacitor containing resistance, packet
Include resistance R1, capacitor C1, diode D2, diode D1, N-type metal-oxide-semiconductor M1, inductance L1, capacitor Co and 1 controller, the control
Device processed has port vg, and one end of resistance R1 is connected with the anode of DC power supply Vi, the other end of resistance R1 and meanwhile with capacitor C1
One end be connected with the drain electrode of N-type metal-oxide-semiconductor M1, the other end of capacitor C1 simultaneously with the cathode of diode D2 and the sun of diode D1
Extremely it is connected, the cathode of diode D1 is connected with one end of the source electrode of N-type metal-oxide-semiconductor M1 and inductance L1 simultaneously, the other end of inductance L1
It is connected simultaneously with one end of one end of capacitor Co and load Z, the other end of capacitor Co while the other end, diode with load Z
The anode of D2 is connected with the negative terminal of DC power supply Vi, and the gate pole of N-type metal-oxide-semiconductor M1 is connected with the port vg of controller.
Further, the controller is power supply control chip.Conventional power supply control chip can be used in the controller,
Such as: the combination of UC3842 and IR2110.The working condition of N-type metal-oxide-semiconductor M1 is determined by controller.
The effect of the resistance R1 is to ensure that the voltage vC1 of capacitor C1 is less than input voltage Vi.Ignore the conduction voltage drop of D2,
As vC1 < Vi, input current ii, that is, the electric current for flowing through resistance R1 is greater than 0.
When embodiment 2 is in continuous conduction mode, steady operation process includes following 2 stages.
The cut-off of stage 1:N type metal-oxide-semiconductor M1, diode D1 conducting, diode D2 conducting, DC power supply Vi, resistance R1, capacitor
C1, diode D1, inductance L1, capacitor Co, load Z constitute a circuit, diode D2, diode D1, inductance L1, capacitor Co,
Load Z constitutes another circuit, capacitor C1 energy storage, and output electric current io (does not consider to flow through inductance L1's in the case where capacitor Co
Electric current) linear decline, input current ii is only a part of io.DC power supply Vi and capacitor C1 is worked with series model.
The conducting of stage 2:N type metal-oxide-semiconductor M1, diode D1 cut-off, diode D2 conducting, DC power supply Vi, resistance R1, N-type
Metal-oxide-semiconductor M1, inductance L1, capacitor Co, load Z constitute a circuit, capacitor C1, N-type metal-oxide-semiconductor M1, inductance L1, capacitor Co, load
Z, diode D2 constitutes another circuit, and capacitor C1 releases energy, and output electric current io (does not consider to flow through inductance in the case where capacitor Co
The electric current of L1) linear rise, input current ii is only a part of io.DC power supply Vi and capacitor C1 is worked with paralleling model.
Fig. 4 is the simulation work waveform diagram of embodiment 2.As shown in Figure 4, the input current ii of embodiment 2 is continuous, output electricity
Stream io is continuous, and the voltage vC1 of capacitor C1 is less than input voltage Vi, and output voltage Vo is less than input 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 (3)
1. a kind of buck DC-DC converter of the series-parallel switching working mode of capacitor containing resistance, it is characterised in that: described to contain
The buck DC-DC converter of the series-parallel switching working mode of the capacitor of resistance includes resistance R1, capacitor C1, diode D2, two
Pole pipe D1, N-type metal-oxide-semiconductor M1, inductance L1, capacitor Co and 1 controller, the controller have port vg, one end of resistance R1
Be connected with the anode of DC power supply Vi, one end of capacitor C1 simultaneously with the anode of DC power supply Vi and the drain electrode phase of N-type metal-oxide-semiconductor M1
Even, the other end of capacitor C1 is connected with the anode of one end of resistance R1 and diode D1 simultaneously, the cathode of diode D1 while and N
The source electrode of type metal-oxide-semiconductor M1 is connected with one end of inductance L1, the other end of inductance L1 simultaneously with one end of capacitor Co and load Z one
End is connected, the other end of capacitor Co while the other end, the anode of diode D2 and the negative terminal phase of DC power supply Vi with load Z
Even, the cathode of diode D2 is connected with the other end of resistance R1, and the gate pole of N-type metal-oxide-semiconductor M1 is connected with the port vg of controller.
2. a kind of buck DC-DC converter of the series-parallel switching working mode of capacitor containing resistance, it is characterised in that: described to contain
The buck DC-DC converter of the series-parallel switching working mode of the capacitor of resistance includes resistance R1, capacitor C1, diode D2, two
Pole pipe D1, N-type metal-oxide-semiconductor M1, inductance L1, capacitor Co and 1 controller, the controller have port vg, one end of resistance R1
Be connected with the anode of DC power supply Vi, the other end of resistance R1 simultaneously with one end of capacitor C1 and the drain electrode phase of N-type metal-oxide-semiconductor M1
Even, the other end of capacitor C1 is connected with the anode of the cathode of diode D2 and diode D1 simultaneously, and the cathode of diode D1 is simultaneously
Be connected with one end of the source electrode of N-type metal-oxide-semiconductor M1 and inductance L1, the other end of inductance L1 simultaneously with one end of capacitor Co and load Z
One end be connected, the other end of the capacitor Co other end, the anode of diode D2 and the negative terminal of DC power supply Vi with load Z simultaneously
It is connected, the gate pole of N-type metal-oxide-semiconductor M1 is connected with the port vg of controller.
3. the buck DC-DC converter of the series-parallel switching working mode of capacitor as claimed in claim 1 or 2 containing resistance,
It is characterized by: the controller is power supply control chip.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2018107205335 | 2018-07-02 | ||
| CN201810720533.5A CN108599563A (en) | 2018-07-02 | 2018-07-02 | A kind of buck DC-DC converter |
| CN201810706781.4A CN108736715A (en) | 2018-07-02 | 2018-07-02 | Buck DC-DC converter |
| CN2018107067814 | 2018-07-02 |
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|---|---|
| CN110112911A true CN110112911A (en) | 2019-08-09 |
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| CN201910386720.9A Pending CN110112911A (en) | 2018-07-02 | 2019-05-10 | The buck DC-DC converter of the series-parallel switching working mode of capacitor containing resistance |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103095132A (en) * | 2012-11-29 | 2013-05-08 | 盐城工学院 | Voltage reduction type convertor |
| CN104821719A (en) * | 2015-05-06 | 2015-08-05 | 上海空间电源研究所 | Improved Buck converter |
| CN105141131A (en) * | 2015-08-12 | 2015-12-09 | 周耀瑜 | Inductor-capacitor series current expansion switching power supply |
| CN106329921A (en) * | 2016-10-21 | 2017-01-11 | 河海大学常州校区 | Three-level Buck converter and control method thereof |
| CN210111853U (en) * | 2018-07-02 | 2020-02-21 | 浙江工业大学 | Buck DC-DC converter with resistor-containing capacitor in series-parallel connection switching working mode |
-
2019
- 2019-05-10 CN CN201910386720.9A patent/CN110112911A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103095132A (en) * | 2012-11-29 | 2013-05-08 | 盐城工学院 | Voltage reduction type convertor |
| CN104821719A (en) * | 2015-05-06 | 2015-08-05 | 上海空间电源研究所 | Improved Buck converter |
| CN105141131A (en) * | 2015-08-12 | 2015-12-09 | 周耀瑜 | Inductor-capacitor series current expansion switching power supply |
| CN106329921A (en) * | 2016-10-21 | 2017-01-11 | 河海大学常州校区 | Three-level Buck converter and control method thereof |
| CN210111853U (en) * | 2018-07-02 | 2020-02-21 | 浙江工业大学 | Buck DC-DC converter with resistor-containing capacitor in series-parallel connection switching working mode |
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