CN102651619A - On-line isolated Cuk circuit - Google Patents
On-line isolated Cuk circuit Download PDFInfo
- Publication number
- CN102651619A CN102651619A CN2011100474409A CN201110047440A CN102651619A CN 102651619 A CN102651619 A CN 102651619A CN 2011100474409 A CN2011100474409 A CN 2011100474409A CN 201110047440 A CN201110047440 A CN 201110047440A CN 102651619 A CN102651619 A CN 102651619A
- Authority
- CN
- China
- Prior art keywords
- diode
- energy storage
- storage inductor
- electric capacity
- rectifier bridge
- 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.)
- Pending
Links
Images
Landscapes
- Rectifiers (AREA)
Abstract
The invention relates to an on-line isolated Cuk circuit, which comprises a first rectifying bridge (D1), a second diode (D2), a third diode (D3), a fourth diode (D4), a first energy storage inductor (L1), a second energy storage inductor (L2), a first capacitor (C1), a second capacitor (C2), a third capacitor (C3) and a switch (K). Compared with the prior art, the on-line isolated Cuk circuit has the advantages that the device consumption is reduced, the cost of the whole circuit is saved, and the like.
Description
Technical field
The present invention relates to a kind of Cook circuit, especially relate to a kind of online isolated Cook circuit.
Background technology
In the topological structure of whole Switching Power Supply, the scope of application of Cook circuit is not very big, and its characteristics are exactly to reverse by polarity of voltage, possess the voltage raising and reducing function simultaneously, and circuit structure is simple, but input/output terminal is not isolated.
Summary of the invention
The object of the invention is exactly for the defective that overcomes above-mentioned prior art existence a kind of online isolated Cook circuit that has reduced the device use amount, saved the cost of entire circuit to be provided.
The object of the invention can be realized through following technical scheme:
A kind of online isolated Cook circuit; It is characterized in that, comprise the first rectifier bridge D1, the second diode D2, the 3rd diode D3, the 4th diode D4, the first energy storage inductor L1, the second energy storage inductor L2, first capacitor C 1, second capacitor C 2, the 3rd capacitor C 3, K switch;
First ac input end of the described first rectifier bridge D1 is connected with first ac power input end; Second ac input end of the described first rectifier bridge D1 is connected with the second source input; The output head anode of the described first rectifier bridge D1 is connected with the first energy storage inductor L1, and the described first rectifier bridge D1 dc output end negative pole is connected with the K switch normal-closed end;
The described first energy storage inductor L1 is connected with K switch Chang Kaiduan, first capacitor C, 1 positive pole respectively; Described first capacitor C, 1 negative pole is connected with the second energy storage inductor L2, the second diode D2 anode respectively; The second diode D2 negative electrode is connected with K switch normal-closed end, second capacitor C, 2 positive poles respectively, and described second capacitor C, 2 negative poles are connected with the second energy storage inductor L2;
Described the 3rd diode D3 negative electrode is connected with the second energy storage inductor L2, and described the 4th diode anode D4 is connected with second capacitor C, 2 anodes;
Described the 3rd diode D3 anode is connected with the 3rd capacitor C 3 negative poles respectively, negative output terminal OUT-connects, and described the 4th diode D4 negative electrode is connected with the 3rd capacitor C 3 positive poles, positive output end OUT+ respectively.
Compared with prior art, the present invention has the pfc circuit of making and the PWM change-over circuit unites two into one, and has significantly reduced the device use amount, has saved the cost of entire circuit, and the pressure regulation span is big, but not only can boost but also step-down.
Description of drawings
Fig. 1 is an electrical block diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the present invention is elaborated.
Embodiment
As shown in Figure 1; A kind of online isolated Cook circuit comprises the first rectifier bridge D1, the second diode D2, the 3rd diode D3, the 4th diode D4, the first energy storage inductor L1, the second energy storage inductor L2, first capacitor C 1, second capacitor C 2, the 3rd capacitor C 3, K switch;
First ac input end of the described first rectifier bridge D1 is connected with first ac power input end; Second ac input end of the described first rectifier bridge D1 is connected with the second source input; The output head anode of the described first rectifier bridge D1 is connected with the first energy storage inductor L1, and the described first rectifier bridge D1 dc output end negative pole is connected with the K switch normal-closed end;
The described first energy storage inductor L1 is connected with K switch Chang Kaiduan, first capacitor C, 1 positive pole respectively; Described first capacitor C, 1 negative pole is connected with the second energy storage inductor L2, the second diode D2 anode respectively; The second diode D2 negative electrode is connected with K switch normal-closed end, second capacitor C, 2 positive poles respectively, and described second capacitor C, 2 negative poles are connected with the second energy storage inductor L2;
Described the 3rd diode D3 negative electrode is connected with the second energy storage inductor L2, and described the 4th diode anode D4 is connected with second capacitor C, 2 anodes;
Described the 3rd diode D3 anode is connected with the 3rd capacitor C 3 negative poles respectively, negative output terminal OUT-connects, and described the 4th diode D4 negative electrode is connected with the 3rd capacitor C 3 positive poles, positive output end OUT+ respectively.
The online isolated Cook of the present invention circuit working flow process is following:
When first ac power input end is L, when second ac power input end is N, when L is correct time; First alternating current is delivered to the first energy storage inductor L1 through No. 3 diodes among the first rectifier bridge D1; Through first capacitor C, 1, the second energy storage inductor L2 electricity is delivered to the 3rd diode D3 negative electrode again, but isolated by the 3rd diode D3; When L when negative; First alternating current is delivered to the 4th diode D4 anode through No. 1 diode among the first rectifier bridge D1, but is isolated by the 4th diode D4, realizes the online isolation of alternating current;
When first ac power input end is N, when second ac power input end is L, when L is correct time; Second alternating current is delivered to the first energy storage inductor L1 through No. 4 diodes among the first rectifier bridge D1; Through first capacitor C, 1, the second energy storage inductor L2 electricity is delivered to the 3rd diode D3 negative electrode again, but isolated by the 3rd diode D3; When L when negative; Second alternating current is delivered to the 4th diode D4 anode through No. 2 diodes among the first rectifier bridge D1, but is isolated by the 4th diode D4, realizes the online isolation of alternating current.
As long as the switch that this circuit wherein relates to can realize that its function all can replace using, like triode switch, metal-oxide-semiconductor switch, reverse-blocking tetrode thyristor, IGBT pipe switch or the like.
Claims (1)
1. online isolated Cook circuit; It is characterized in that, comprise first rectifier bridge (D1), second diode (D2), the 3rd diode (D3), the 4th diode (D4), first energy storage inductor (L1), second energy storage inductor (L2), first electric capacity (C1), second electric capacity (C2), the 3rd electric capacity (C3), switch (K);
First ac input end of described first rectifier bridge (D1) is connected with first ac power input end; Second ac input end of described first rectifier bridge (D1) is connected with the second source input; The output head anode of described first rectifier bridge (D1) is connected with first energy storage inductor (L1), and described first rectifier bridge (D1) dc output end negative pole is connected with switch (K) normal-closed end;
Described first energy storage inductor (L1) is connected with switch (K) Chang Kaiduan, first electric capacity (C1) positive pole respectively; Described first electric capacity (C1) negative pole is connected with second energy storage inductor (L2), second diode (D2) anode respectively; Second diode (D2) negative electrode is connected with switch (K) normal-closed end, second electric capacity (C2) positive pole respectively, and described second electric capacity (C2) negative pole is connected with second energy storage inductor (L2);
Described the 3rd diode (D3) negative electrode is connected with second energy storage inductor (L2), and described the 4th diode anode (D4) is connected with second electric capacity (C2) anode;
Described the 3rd diode (D3) anode is connected with the 3rd electric capacity (C3) negative pole respectively, negative output terminal (OUT-) connects, and described the 4th diode (D4) negative electrode is anodal with the 3rd electric capacity (C3) respectively, positive output end (OUT+) is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100474409A CN102651619A (en) | 2011-02-28 | 2011-02-28 | On-line isolated Cuk circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100474409A CN102651619A (en) | 2011-02-28 | 2011-02-28 | On-line isolated Cuk circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102651619A true CN102651619A (en) | 2012-08-29 |
Family
ID=46693522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100474409A Pending CN102651619A (en) | 2011-02-28 | 2011-02-28 | On-line isolated Cuk circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102651619A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103916009A (en) * | 2014-03-18 | 2014-07-09 | 矽力杰半导体技术(杭州)有限公司 | Negative voltage output circuit |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060120003A1 (en) * | 2003-01-31 | 2006-06-08 | Guo-Hua Wang | Cuk converter with inductors and capacitors on both power lines |
| CN101895223A (en) * | 2010-06-11 | 2010-11-24 | 燕山大学 | Double-Cuk buck-boost output parallel-type converter |
-
2011
- 2011-02-28 CN CN2011100474409A patent/CN102651619A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060120003A1 (en) * | 2003-01-31 | 2006-06-08 | Guo-Hua Wang | Cuk converter with inductors and capacitors on both power lines |
| CN101895223A (en) * | 2010-06-11 | 2010-11-24 | 燕山大学 | Double-Cuk buck-boost output parallel-type converter |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103916009A (en) * | 2014-03-18 | 2014-07-09 | 矽力杰半导体技术(杭州)有限公司 | Negative voltage output circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103889111B (en) | The linear constant current drive circuit of a kind of twin voltage operation and driving method thereof | |
| CN103269164B (en) | The quasi-single-stage high power factor circuit of former limit current constant control and device | |
| CN102857128A (en) | AC (alternating-current) and DC (direct-current) conversion circuit | |
| CN104780692B (en) | A kind of single-stage is without the double Boost of bridge and Flyback integrated LED drive circuit | |
| CN105720826A (en) | Hybrid bridge type double-voltage rectification and output parallel single-stage inverter | |
| CN204652713U (en) | A kind of LED drive power of no electrolytic capacitor | |
| CN103312211A (en) | Control method of single phase grid-connected inverter | |
| CN205490142U (en) | Switched inductor boost converter | |
| CN204069441U (en) | LED illumination non-isolated drive circuit | |
| CN103762839A (en) | Magnetic coupling type single-phase high-gain bridge-free power factor correction circuit | |
| CN203788178U (en) | Power supply circuit for coal mine with super-wide voltage input and output | |
| CN203722473U (en) | Embedded single-switch Buck-Boost converter | |
| CN203086226U (en) | Short-circuit motorcycle voltage regulator | |
| CN102698974A (en) | High-pressure cleaning machine | |
| CN102223058B (en) | Interlaced on-line isolated double-cuk circuit | |
| CN102651619A (en) | On-line isolated Cuk circuit | |
| CN204481682U (en) | A kind of interleaved parallel PFC switching power circuit | |
| CN103762841B (en) | A kind of embedded single switch Buck-Boost converter | |
| CN203912244U (en) | An LED array illuminating lamp drive circuit | |
| CN203339977U (en) | BUCK-BUCK-BOOST bridgeless converter | |
| CN203027158U (en) | Circuit for improving rectifier bridge pile conduction angle | |
| CN203984263U (en) | Rectification commutation circuit | |
| CN204425182U (en) | Single tube pfc circuit and power module | |
| CN103762852A (en) | High-efficiency high-gain DC-DC converter with double coupling inductors | |
| CN102545654A (en) | Input rectification circuit of auxiliary power supply |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120829 |