CN108336902A - Boost circuit based on caching peak voltage switching tube - Google Patents
Boost circuit based on caching peak voltage switching tube Download PDFInfo
- Publication number
- CN108336902A CN108336902A CN201810224666.3A CN201810224666A CN108336902A CN 108336902 A CN108336902 A CN 108336902A CN 201810224666 A CN201810224666 A CN 201810224666A CN 108336902 A CN108336902 A CN 108336902A
- Authority
- CN
- China
- Prior art keywords
- peak voltage
- diode
- switching tube
- cathode
- voltage switching
- 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
-
- 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
-
- 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
- H02M1/32—Means for protecting converters other than automatic disconnection
-
- 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
- H02M1/0003—Details of control, feedback or regulation circuits
- H02M1/0038—Circuits or arrangements for suppressing, e.g. by masking incorrect turn-on or turn-off signals, e.g. due to current spikes in current mode control
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Electronic Switches (AREA)
Abstract
The invention discloses the Boost circuit based on caching peak voltage switching tube, including power supply, the anode connection inductance L of power supplybOne end, inductance LbThe other end simultaneously Connection Cache peak voltage switching tube and diode Db1Anode, diode Db1Cathode connection capacitance CbOne end and resistance RboutOne end, capacitance CbThe other end and resistance RboutThe other end connection power supply cathode；It includes switch tube body to cache peak voltage switching tube, switchs the pin connection inductance L of tube bodybThe other end and the first diode anode, the cathode of the first diode connects the anode of the second diode, while one end of the cathode connection peak voltage Absorption Capacitance of the first diode, the cathode connection diode D of the second diodeb1Cathode, another pin of the other end of peak voltage Absorption Capacitance and switch tube body is connected to the cathode of power supply.Caching peak voltage switching tube can absorb peak voltage, to extend switch tube lifetime, prevent punch through damage.
Description
Technical field
The present invention relates to Boost circuit technical fields, more particularly to the Boost electricity based on caching peak voltage switching tube
Road.
Background technology
Switching tube can be all used in Boost circuit, the two poles of the earth of current path are (such as：MOSFET is source level and drain electrode) often
There is peak voltage, which typically results in energy loss, and the switching tube lost of life even results in punch through damage, in turn
Influence the reliability of Boost circuit.
Also there are crest voltage absorbing circuit, usual crest voltage absorbing circuit shown in Fig. 8 using Fig. 5-in the prior art
The structure of RCD circuits and RC circuits, the disadvantage is that its absorption peak voltage energy by the way of consuming energy, though it can prevent open
The problems such as pass pipe punctures, but it cannot reduce loss, and leads to temperature rise, and heat dissipation is difficult, and device lifetime reduces.
What existing structure also had leads back peak voltage input terminal, and such conversion ratio is relatively low.
Invention content
The purpose of the present invention is exactly to solve the above-mentioned problems, to provide the Boost electricity based on caching peak voltage switching tube
Road can absorb peak voltage, prevent from puncturing to extend the service life；Spike energy can be utilized again again, reduces energy loss.
To achieve the goals above, the present invention adopts the following technical scheme that：
Based on the Boost circuit of caching peak voltage switching tube, including power supply, the anode connection inductance L of the power supplyb's
One end, inductance LbThe other end simultaneously Connection Cache peak voltage switching tube and diode Db1Anode, diode Db1Cathode
Connect capacitance CbOne end and resistance RboutOne end, capacitance CbThe other end and resistance RboutOther end connection power supply it is negative
Pole；
The caching peak voltage switching tube includes switch tube body, and a pin of the switch tube body connects the electricity
Feel LbThe other end and the first diode anode, the cathode of the first diode connects the anode of the second diode, while first
One end of the cathode connection peak voltage Absorption Capacitance of diode, the cathode of the second diode connect the diode Db1The moon
Pole, the other end of peak voltage Absorption Capacitance and another pin of switch tube body are connected to the cathode of power supply.
The switch tube body is controlled tr tube, is all connect with switch controlled and driving unit.
The switch tube body is MOSFET.
The switch tube body is triode.
The switch tube body is silicon-controlled.
Beneficial effects of the present invention：
1, the caching peak voltage switching tube in this circuit can absorb peak voltage, to extend switch tube lifetime, prevent
Only there is punch through damage, enhances the reliability of circuit.
2, the caching peak voltage switching tube in this circuit can absorb and utilize spike energy again, reduce energy damage
Consumption.
3, the caching peak voltage switching tube in this circuit can directly pump spike energy to output end, transformation efficiency compared with
Height, loss are smaller.
Description of the drawings
Fig. 1 is the circuit structure diagram of the present invention；
Fig. 2 (a) is the waveform before peak clipping；Fig. 2 (b) is the waveform after peak clipping；
Fig. 3 is the equivalent series inductance model of switching tube；
Fig. 4 is the principle that can cache peak voltage；
Fig. 5 is the topology that RCD formulas absorb peak voltage；
Fig. 6 is a kind of example for the topology that RCD formulas absorb peak voltage；
Fig. 7 is the topology that RC circuit types absorb peak voltage；
Fig. 8 is a kind of example for the topology that RC circuit types absorb peak voltage.
1. caching peak voltage switching tube.
Specific implementation mode
The invention will be further described with embodiment below in conjunction with the accompanying drawings.
As shown in Figure 1, the Boost circuit based on caching peak voltage switching tube, including power supply, the anode of the power supply is even
Meet inductance LbOne end, inductance LbThe other end simultaneously Connection Cache peak voltage switching tube and diode Db1Anode, two poles
Pipe Db1Cathode connection capacitance CbOne end and resistance RboutOne end, capacitance CbThe other end and resistance RboutThe other end connect
Connect the cathode of power supply；
The caching peak voltage switching tube 1 includes switch tube body Sb0, the switch tube body Sb0A pin connection
The inductance LbThe other end and the first diode Db11Anode, the first diode Db11Cathode connect the second diode Db12
Anode, while the first diode Db11Cathode connection peak voltage Absorption Capacitance Cb13One end, the second diode Db12The moon
Pole connects the diode Db1Cathode, peak voltage Absorption Capacitance Cb13The other end and switch tube body Sb0Another pin
It is connected to the cathode of power supply.
The switch tube body is controlled tr tube, is all connect with switch controlled and driving unit.
The switch tube body is MOSFET, triode or silicon-controlled.
The topology applies caching peak voltage switching tube, can be by Sb0On peak voltage absorption discharge again, reach
To purpose shown in Fig. 2 (b).
Sb0To switch tube body, Db11、Db12For diode, Cb13For peak voltage Absorption Capacitance.Its working principle is that Sb0
In there is larger current to flow through from top to bottom, its suddenly disconnect when, due to the effect S of the parasitic inductance in circuitb0Upper end is opposite
There is spike in voltage instantaneous in lower end, at this time diode Db11Conducting, Cb13The spike energy that excessively high peak voltage is carried
It absorbs.Work as Db12Reach C after conducting voltageb13Energy is discharged again.Its energy absorbing efficiency such as Fig. 2 (a)-Fig. 2 (b) institutes
Show.
Parasitic inductance can cause the generation of the peak current of switching tube.As shown in figure 3, Ls is the ESL (equivalent strings of switching tube
Join inductance), Ls is the pin and the inductance that brings of PCB leads for being considered as device, inductance distribution such as left side electricity in Fig. 4 in practical application
Shown in road, including Ls1And Ls2, the present invention in diode D11Anode is exactly theoretically to be connected to LSWith ideal perfect switch pipe it
Between, on the right side of Fig. 4 shown in circuit, only completely by LSElimination is impossible, therefore makes D in practical application as possible11Anode with
The upper end of switching tube is apart from small, so that LSA part of LS2It levels off to 0, finally reaches approximately effect shown in the circuit of right side in Fig. 4.
Above-mentioned, although the foregoing specific embodiments of the present invention is described with reference to the accompanying drawings, not protects model to the present invention
The limitation enclosed, those skilled in the art should understand that, based on the technical solutions of the present invention, those skilled in the art are not
Need to make the creative labor the various modifications or changes that can be made still within protection scope of the present invention.
Claims (5)
1. the Boost circuit based on caching peak voltage switching tube, characterized in that including power supply, the anode connection of the power supply
Inductance LbOne end, inductance LbThe other end simultaneously Connection Cache peak voltage switching tube and diode Db1Anode, diode
Db1Cathode connection capacitance CbOne end and resistance RboutOne end, capacitance CbThe other end and resistance RboutThe other end connection
The cathode of power supply；
The caching peak voltage switching tube includes switch tube body, and a pin of the switch tube body connects the inductance Lb
The other end and the first diode anode, the cathode of the first diode connects the anode of the second diode, while the one or two pole
One end of the cathode connection peak voltage Absorption Capacitance of pipe, the cathode of the second diode connect the diode Db1Cathode, point
The other end of peak voltage Absorption Capacitance and another pin of switch tube body are connected to the cathode of power supply.
2. the Boost circuit as described in claim 1 based on caching peak voltage switching tube, characterized in that the switching tube sheet
Body is controlled tr tube, is all connect with switch controlled and driving unit.
3. the Boost circuit as claimed in claim 1 or 2 based on caching peak voltage switching tube, characterized in that the switching tube
Ontology is MOSFET.
4. the Boost circuit as claimed in claim 1 or 2 based on caching peak voltage switching tube, characterized in that the switching tube
Ontology is triode.
5. the Boost circuit as claimed in claim 1 or 2 based on caching peak voltage switching tube, characterized in that the switching tube
Ontology is silicon-controlled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810224666.3A CN108336902A (en) | 2018-03-19 | 2018-03-19 | Boost circuit based on caching peak voltage switching tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810224666.3A CN108336902A (en) | 2018-03-19 | 2018-03-19 | Boost circuit based on caching peak voltage switching tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108336902A true CN108336902A (en) | 2018-07-27 |
Family
ID=62932142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810224666.3A Pending CN108336902A (en) | 2018-03-19 | 2018-03-19 | Boost circuit based on caching peak voltage switching tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108336902A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109120142A (en) * | 2018-11-05 | 2019-01-01 | 宁波市北仑临宇电子科技有限公司 | The lossless synchronous absorbing circuit of peak voltage, boosting and step-down switching power supply circuit |
| CN109167510A (en) * | 2018-11-05 | 2019-01-08 | 宁波市北仑临宇电子科技有限公司 | Lossless asynchronous absorption circuit and NPC tri-level circuit |
| CN109167511A (en) * | 2018-11-05 | 2019-01-08 | 宁波市北仑临宇电子科技有限公司 | Lossless synchronous absorbing circuit, boosting and step-down switching power supply circuit |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103138575A (en) * | 2013-03-26 | 2013-06-05 | 西安理工大学 | Clamping type Boost converter with buffer absorption circuit |
| CN103427659A (en) * | 2013-08-22 | 2013-12-04 | 深圳桑达国际电源科技有限公司 | Electrical energy conversion system, DC-DC (direct current) converter and voltage spike suppression circuit of DC-DC converter |
| US20140133200A1 (en) * | 2012-11-14 | 2014-05-15 | Delta Electronics, Inc. | Clamp snubber circuit and resistance adjustment method for the same |
| CN203967965U (en) * | 2014-06-23 | 2014-11-26 | 深圳科士达科技股份有限公司 | A kind of IGBT voltage peak absorbing circuit of inverter |
-
2018
- 2018-03-19 CN CN201810224666.3A patent/CN108336902A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140133200A1 (en) * | 2012-11-14 | 2014-05-15 | Delta Electronics, Inc. | Clamp snubber circuit and resistance adjustment method for the same |
| CN103138575A (en) * | 2013-03-26 | 2013-06-05 | 西安理工大学 | Clamping type Boost converter with buffer absorption circuit |
| CN103427659A (en) * | 2013-08-22 | 2013-12-04 | 深圳桑达国际电源科技有限公司 | Electrical energy conversion system, DC-DC (direct current) converter and voltage spike suppression circuit of DC-DC converter |
| CN203967965U (en) * | 2014-06-23 | 2014-11-26 | 深圳科士达科技股份有限公司 | A kind of IGBT voltage peak absorbing circuit of inverter |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109120142A (en) * | 2018-11-05 | 2019-01-01 | 宁波市北仑临宇电子科技有限公司 | The lossless synchronous absorbing circuit of peak voltage, boosting and step-down switching power supply circuit |
| CN109167510A (en) * | 2018-11-05 | 2019-01-08 | 宁波市北仑临宇电子科技有限公司 | Lossless asynchronous absorption circuit and NPC tri-level circuit |
| CN109167511A (en) * | 2018-11-05 | 2019-01-08 | 宁波市北仑临宇电子科技有限公司 | Lossless synchronous absorbing circuit, boosting and step-down switching power supply circuit |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180727 |
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| RJ01 | Rejection of invention patent application after publication |