CN107665008A - A kind of voltage regulator circuit - Google Patents
A kind of voltage regulator circuit Download PDFInfo
- Publication number
- CN107665008A CN107665008A CN201710815294.7A CN201710815294A CN107665008A CN 107665008 A CN107665008 A CN 107665008A CN 201710815294 A CN201710815294 A CN 201710815294A CN 107665008 A CN107665008 A CN 107665008A
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- CN
- China
- Prior art keywords
- diode
- switch
- inductance
- negative electrode
- circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
- G05F1/56—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Automation & Control Theory (AREA)
- Dc-Dc Converters (AREA)
Abstract
The present invention relates to a kind of voltage regulator circuit, required voltage output is obtained for being adjusted to power supply VCC voltage, it includes：Switch SW1, its one end connects VCC, other end connection electric capacity C1 one end, C1 other end connecting valve SW2 one end, switch SW2 other end ground connection, switch SW2 one end connection inductance L1 one end, inductance L1 other end connection diode D2 negative electrode, diode D2 plus earth, diode D2 negative electrode is also connected with switching SW3 one end, SW3 another termination VCC is switched, switch SW1 is connected with electric capacity C1 tie point with diode D1 anode, and diode D2 negative electrode is output node.Capacitor of the present invention is used to provide primary boost effect, and inductance is used to further adjust, further supercharging.Without non-overlapped clock signal, compared to booster circuit, inductor dimensions can be reduced, reduce volume, circuit structure is compact.
Description
Technical field
The present invention relates to switch power technology field, and in particular to a kind of voltage regulator circuit.
Background technology
In general Voltage Supply Device includes being used to produce higher than " boosting " circuit of supply voltage and for producing relatively low electricity
" decompression " circuit of pressure, it is typically necessary enters line misregistration and inefficient by the triggering and conducting of two circuits.
In order to overcome drawbacks described above, the invention provides a kind of voltage modulator circuit, its have boost operation pattern and
At least one of reduced pressure operation pattern.
The present invention has the following advantages that compared with prior art：The present invention is a kind of boost pressure controller of small-sized efficient rate,
Capacitor is used to provide primary boost effect, and inductance is used to further adjust, further supercharging.Believe without non-overlapped clock
Number, compared to booster circuit, inductor dimensions can be reduced, reduce volume, circuit structure is compact.
The content of the invention
The characteristic of electrical combination provided by the present invention voltage-multiplying circuit and booster regulator is to reach the liter of small-sized efficient
Adjuster is pressed, a capacitor is used to provide primary boost effect, and an inductor is used to further adjust, further supercharging or drop
Pressure.Non-overlapped clock signal is not needed, and the inductance that inductor can be made to be less than significantly in comparable booster circuit,
So as to help to reduce size.
The purpose of the present invention is realized by following technical proposals：
A kind of voltage regulator circuit, required voltage output is obtained for being adjusted to power supply VCC voltage, and it is special
Sign is that it includes：Switch SW1, its one end connection VCC, other end connection electric capacity C1 one end, C1 other end connecting valve
SW2 one end, SW2 other end ground connection is switched, switch SW2 one end connection inductance L1 one end, the inductance L1 other end connects
Diode D2 negative electrode, diode D2 plus earth are connect, diode D2 negative electrode is also connected with switching SW3 one end, switchs SW3
Another termination VCC, switch SW1 is connected with electric capacity C1 tie point with diode D1 anode, and diode D2 negative electrode is defeated
Egress.
Wherein described SW2 is closed within a period of time before SW1 openings, so as to realize boost operations.
The wherein described SW1 and SW3 is linkage.
Brief description of the drawings
From following description with reference to the accompanying drawings it will be further appreciated that the present invention.
Fig. 1 is the figure of one embodiment of the voltage modulator circuit of the present invention.
Embodiment
With reference to figure 1, the Switching Power Supply includes power supply VCC, switchs SW1, its one end connection VCC, the other end is by connecting electricity
Hold C1 one end, C1 other end connecting valve SW2 one end, switch SW2 other end ground connection, switch SW2 one end connection
Inductance L1 one end, inductance L1 other end connection diode D2 one end, diode D2 other end ground connection, diode D2's
One end is also connected with switching SW3 one end, switchs SW3 another termination VCC, switch SW1 and electric capacity C1 tie point and diode
D1 one end connection, diode D2 other end connection electric capacity C2 one end, electric capacity C2 other end ground connection, load electronics RL with
Electric capacity C2 is in parallel, and electric capacity C2 tie point is the output node of switching power circuit more than diode D1, in the switching power circuit,
Switch SW1 and electric capacity C1 tie point is designated as node 1, and electric capacity C1 and switch SW2 node are designated as node 2, inductance L1 and two poles
Pipe D2 node is designated as node 3, in the switching power circuit, because inductance can prevent substantial amounts of short circuit current, clock weight
Folded is no longer problem.
In operation, t1 is at least designated as in the time, during the t1 times, SW3 and SW2 are simultaneously turned on, in this stage, inductance L1
In will build up on energy, then SW2 disconnect, inductance effect cause node 2 voltage ratio node 3 it is high, due to the voltage ratio of node 1
The high VCC of voltage of node 2, then the voltage ratio 2VCC of node 1 is high.The output voltage VPA of the switching voltage circuit can pass through
The modulation t1 times are effectively adjusted, i.e., can be with the output electricity of adjusting switch power circuit by adjusting the length of t1 times
Pressure.
Circuit most pronounced effects in the case where desired output voltage VPA is adjusted to be close or larger than double voltage.
Because most of energy stores are provided by C1 in whole boost process, so compared with existing directly booster circuit, L1
Memory capacity want much less.This means inductor can be smaller with physics upper volume.
Have less than existing booster circuit to output capacitance, the circuit because inductance and Schottky are coupled to load transient
Branch road problem.
Therefore, there is the efficiency for the traditional circuit that a boost in voltage adjuster circuit realizes while describe, be easy to adjust
Be easier to integrate, it is not necessary to non-overlapped clock, so as to allow simpler circuit design.
It will be apparent to one skilled in the art that in the situation for the spirit or essential characteristics for not departing from the present invention
Under, the present invention can be implemented with other concrete forms.Description is illustrative and not restrictive.The scope of the present invention is by institute
Attached claim rather than description indicate, and all changes in the implication and scope of equivalent are intended to be comprised in it
In.
Claims (3)
1. a kind of voltage regulator circuit, required voltage output, its feature are obtained for being adjusted to power supply VCC voltage
It is, it includes：Switch SW1, its one end connection VCC, other end connection electric capacity C1 one end, C1 other end connecting valve
SW2 one end, SW2 other end ground connection is switched, switch SW2 one end connection inductance L1 one end, the inductance L1 other end connects
Diode D2 negative electrode, diode D2 plus earth are connect, diode D2 negative electrode is also connected with switching SW3 one end, switchs SW3
Another termination VCC, switch SW1 is connected with electric capacity C1 tie point with diode D1 anode, and diode D2 negative electrode is defeated
Egress.
2. circuit according to claim 1, wherein the SW2 is closed within a period of time before SW1 openings, from
And realize boost operations.
3. circuit according to claim 2, wherein the SW1 and the SW3 are linkages.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710815294.7A CN107665008A (en) | 2017-09-12 | 2017-09-12 | A kind of voltage regulator circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710815294.7A CN107665008A (en) | 2017-09-12 | 2017-09-12 | A kind of voltage regulator circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107665008A true CN107665008A (en) | 2018-02-06 |
Family
ID=61097395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710815294.7A Pending CN107665008A (en) | 2017-09-12 | 2017-09-12 | A kind of voltage regulator circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107665008A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002039568A2 (en) * | 2000-10-11 | 2002-05-16 | Tropian, Inc. | Boost doubler circuit |
| CN101036281A (en) * | 2004-10-19 | 2007-09-12 | 罗姆股份有限公司 | Switching power supply and electronic apparatus employing the same |
| CN101040422A (en) * | 2004-10-19 | 2007-09-19 | 罗姆股份有限公司 | Switching power supply control circuit, switching power supply device and electronic apparatus employing the same |
| CN202616995U (en) * | 2012-03-30 | 2012-12-19 | 格科微电子（上海）有限公司 | Charge pump and liquid crystal display driving chip |
-
2017
- 2017-09-12 CN CN201710815294.7A patent/CN107665008A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002039568A2 (en) * | 2000-10-11 | 2002-05-16 | Tropian, Inc. | Boost doubler circuit |
| TW543269B (en) * | 2000-10-11 | 2003-07-21 | Tropian Inc | Boost doubler circuit |
| DE60131190D1 (en) * | 2000-10-11 | 2007-12-13 | Matsushita Electric Ind Co Ltd | BOOST VOLTAGE DOUBLING CIRCUIT |
| CN101036281A (en) * | 2004-10-19 | 2007-09-12 | 罗姆股份有限公司 | Switching power supply and electronic apparatus employing the same |
| CN101040422A (en) * | 2004-10-19 | 2007-09-19 | 罗姆股份有限公司 | Switching power supply control circuit, switching power supply device and electronic apparatus employing the same |
| CN202616995U (en) * | 2012-03-30 | 2012-12-19 | 格科微电子（上海）有限公司 | Charge pump and liquid crystal display driving chip |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180206 |