CN109067211A - A kind of UVLO control circuit system of integrated high voltage starting - Google Patents
A kind of UVLO control circuit system of integrated high voltage starting Download PDFInfo
- Publication number
- CN109067211A CN109067211A CN201810841536.4A CN201810841536A CN109067211A CN 109067211 A CN109067211 A CN 109067211A CN 201810841536 A CN201810841536 A CN 201810841536A CN 109067211 A CN109067211 A CN 109067211A
- Authority
- CN
- China
- Prior art keywords
- control chip
- capacitor
- chip
- resistance
- integrated high
- 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
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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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc power output without possibility of reversal 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
- H02M7/217—Conversion of ac power input into dc power output without possibility of reversal 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
- H02M7/219—Conversion of ac power input into dc power output without possibility of reversal 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 in a bridge configuration
-
- 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
- H02M1/36—Means for starting or stopping converters
-
- 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
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33507—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters
- H02M3/33523—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters with galvanic isolation between input and output of both the power stage and the feedback loop
Abstract
The invention discloses a kind of UVLO control circuit systems of integrated high voltage starting, including controlling chip, bridge rectifier and transformer, the first end feet for controlling chip is grounded by first capacitor, second end feet of control chip is separately connected one end and the bridge rectifier of the second capacitor by second resistance, the other end of second capacitor is grounded, the third end feet for controlling chip is grounded by second resistance, 4th end feet of control chip is separately connected one end of transformer and one end of first diode by 3rd resistor, 5th pin of control chip is separately connected the other end of first diode and by third capacity earth, the 6th pin for controlling chip passes through the grid of the 4th resistance connection switch pipe.The invention has the advantages that: the present invention for controlling the starting and closing of controller, and integrated high-voltage starting circuit starting speed is fast, and the dynamic charging modes after starting need auxiliary winding to power, and chip integration is high, and power-supply system peripheral circuit structure is simple.
Description
Technical field
The present invention relates to power switch technical field, especially a kind of UVLO control circuit system of integrated high voltage starting.
Background technique
Traditional switch power supply needs start-up circuit to provide starting voltage to the power supply of controller when system opens machine, until
Controller can work normally, and controller can be powered by auxiliary winding at this time.In power-supply system starting, starting voltage HV is logical
It crosses start-up resistor Rs and provides charging path for the VDD foot external capacitor Cin of controller.When the voltage of capacitor Cin reaches default electricity
Controller is started to work when pressure, and controller is powered by auxiliary winding LA at this time.
Traditional external start-up resistor mode, charging current depend on the size of start-up resistor, this electric current decision systems
Start the time；And controller starting after start-up circuit cannot turn off, therefore in start-up resistor will generate centainly to
Machine power consumption, this power consumption also depend on the size of start-up resistor.If the excessive system start-up time of start-up resistor value is too long, starting electricity
Road stand-by power consumption is less than normal；Otherwise the too small system start-up time of start-up resistor value is short, and the stand-by power consumption of start-up circuit is bigger than normal.Thus
Know that the value of start-up resistor will trade off between system start-up time and stand-by power consumption, when being difficult to meet shorter starting simultaneously
Between and lesser stand-by power consumption.
This framework powered using external start-up resistor auxiliary winding, system standby power consumption is big, starts overlong time, is
Circuit structure of uniting is complicated, and integrated level is low, and PCB circuit board area is big, and manufacturing cost is high.
Therefore, it is necessary to propose a kind of UVLO control circuit system of integrated high voltage starting in response to the above problems.
Summary of the invention
Object of the present invention is to overcome deficiency in the prior art, providing is a kind of UVLO control that integrated high voltage starts
Circuit system.
In order to solve the above-mentioned technical problem, the present invention is achieved through the following technical solutions:
A kind of UVLO control circuit system of integrated high voltage starting, including control chip, bridge rectifier and transformer, the control
First end feet of coremaking piece is grounded by first capacitor, and the second end feet of the control chip is separately connected the by second resistance
The third end feet of one end of two capacitors and bridge rectifier, the other end ground connection of second capacitor, the control chip passes through
4th end feet of the second resistance ground connection door control chip is separately connected one end and the one or two of transformer by 3rd resistor
5th pin of one end of pole pipe, the control chip is separately connected the other end of first diode and is connect by third capacitor
Ground, the 6th pin of the control chip pass through the grid of the 4th resistance connection switch pipe, the 7th end feet of the control chip
Ground connection, the source electrode of the 8th end feet connection switch pipe of the control chip.
Preferably, the second end feet of the control chip also passes through the 5th resistance eutral grounding, the 8th end of the control chip
Foot also passes through the 6th resistance eutral grounding.
Preferably, the bridge rectifier is separately connected one end of the 8th resistance and one end of the 4th capacitor, and the described 8th
The other end of the 4th capacitor of one end of resistance connects one end of transformer by the second diode.
Preferably, the drain electrode of the switching tube is separately connected one end of the second diode and transformer.
Preferably, the other end of the transformer is in series with third diode and the 5th capacitor respectively.
Preferably, the control chip uses OB3330 single-chip microcontroller.
The invention has the advantages that: the present invention to open for controlling the starting and closing of controller, integrated high-voltage starting circuit
Dynamic speed is fast, and the dynamic charging modes after starting need auxiliary winding to power, and stand-by power consumption is low, and chip integration is high, electricity
Source system peripherals circuit structure is simple, and pcb board area is small, and solution development is at low cost, technical economic benefit with higher.
It is described further below with reference to technical effect of the attached drawing to design of the invention, specific structure and generation, with
It is fully understood from the purpose of the present invention, feature and effect.
Detailed description of the invention
Fig. 1 is circuit diagram of the invention.
Specific embodiment
The embodiment of the present invention is described in detail below in conjunction with attached drawing, but the present invention can be defined by the claims
Implement with the multitude of different ways of covering.
As shown in Figure 1, a kind of UVLO control circuit system of integrated high voltage starting, including control chip U0, bridge rectifier
The first end feet of device Q1 and transformer T1, the control chip U0 are grounded by first capacitor C1, described to control the of chip U0
Two end feets are separately connected one end and the bridge rectifier Q1 of the second capacitor C2 by second resistance R2, and the second capacitor C1's is another
The third end feet of one end ground connection, the control chip U0 is grounded by second resistance R2, the 4th end feet of the control chip U0
One end of transformer T1 and one end of first diode D1 are separately connected by 3rd resistor R3, it is described to control the 5th of chip U0
Pin is separately connected the other end of first diode D1 and is grounded by third capacitor C3, the 6th pin of the control chip U0
By the grid of the 4th resistance R4 connection switch pipe M1, the 7th end feet ground connection of the control chip U0, the control chip U0
The 8th end feet connection switch pipe M1 source electrode.
Further, the second end feet of the control chip U0 also passes through the 5th resistance R5 ground connection, the control chip U0
The 8th end feet also pass through the 6th resistance R6 ground connection, the bridge rectifier Q1 is separately connected one end and the 4th of the 8th resistance R8
The other end of one end of capacitor C4, the 4th capacitor C4 of one end of the 8th resistance R8 passes through the second diode D2 connection transformer
One end of T1.
Wherein, the drain electrode of the switching tube M1 is separately connected one end of the second diode D2 and transformer T1, the transformation
The other end of device T1 is in series with third diode D3 and the 5th capacitor C5 respectively.
In addition, the control chip U1 uses OB3330 single-chip microcontroller.
The present invention is used to control the starting and closing of controller, and integrated high-voltage starting circuit starting speed is fast, starting knot
Dynamic charging modes after beam need auxiliary winding to power, and stand-by power consumption is low, and chip integration is high, power-supply system peripheral circuit knot
Structure is simple, and pcb board area is small, and solution development is at low cost, technical economic benefit with higher.
The preferred embodiment of the present invention has been described in detail above.It should be appreciated that those skilled in the art without
It needs creative work according to the present invention can conceive and makes many modifications and variations.Therefore, all technologies in the art
Personnel are available by logical analysis, reasoning, or a limited experiment on the basis of existing technology under this invention's idea
Technical solution, all should be within the scope of protection determined by the claims.
Claims (6)
1. a kind of UVLO control circuit system of integrated high voltage starting, it is characterised in that；Including control chip, bridge rectifier and
First end feet of transformer, the control chip is grounded by first capacitor, and the second end feet of the control chip passes through second
Resistance is separately connected one end and the bridge rectifier of the second capacitor, the other end ground connection of second capacitor, the control chip
Third end feet by second resistance be grounded, it is described control chip the 4th end feet transformer is separately connected by 3rd resistor
5th pin of one end of one end and first diode, the control chip is separately connected the other end of first diode and passes through
6th pin of third capacity earth, the control chip passes through the grid of the 4th resistance connection switch pipe, the control chip
The 7th end feet ground connection, it is described control chip the 8th end feet connection switch pipe source electrode.
2. a kind of UVLO control circuit system of integrated high voltage starting as described in claim 1, it is characterised in that；The control
Second end feet of chip also passes through the 5th resistance eutral grounding, and the 8th end feet of the control chip also passes through the 6th resistance eutral grounding.
3. a kind of UVLO control circuit system of integrated high voltage starting as claimed in claim 2, it is characterised in that；The bridge-type
Rectifier is separately connected one end of the 8th resistance and one end of the 4th capacitor, the 4th capacitor of one end of the 8th resistance it is another
End connects one end of transformer by the second diode.
4. a kind of UVLO control circuit system of integrated high voltage starting as claimed in claim 3, it is characterised in that；The switch
The drain electrode of pipe is separately connected one end of the second diode and transformer.
5. a kind of UVLO control circuit system of integrated high voltage starting as claimed in claim 4, it is characterised in that；The transformation
The other end of device is in series with third diode and the 5th capacitor respectively.
6. a kind of UVLO control circuit system of integrated high voltage starting as described in claim 1, it is characterised in that；The control
Chip uses OB3330 single-chip microcontroller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810841536.4A CN109067211A (en) | 2018-07-27 | 2018-07-27 | A kind of UVLO control circuit system of integrated high voltage starting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810841536.4A CN109067211A (en) | 2018-07-27 | 2018-07-27 | A kind of UVLO control circuit system of integrated high voltage starting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109067211A true CN109067211A (en) | 2018-12-21 |
Family
ID=64836603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810841536.4A Pending CN109067211A (en) | 2018-07-27 | 2018-07-27 | A kind of UVLO control circuit system of integrated high voltage starting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109067211A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202818685U (en) * | 2012-07-03 | 2013-03-20 | 佛山市力美照明光电科技有限公司 | LED driving power supply high-power factor circuit |
| CN204030996U (en) * | 2014-05-26 | 2014-12-17 | 昂宝电子（上海）有限公司 | A kind of reverse exciting switching voltage regulator circuit |
-
2018
- 2018-07-27 CN CN201810841536.4A patent/CN109067211A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202818685U (en) * | 2012-07-03 | 2013-03-20 | 佛山市力美照明光电科技有限公司 | LED driving power supply high-power factor circuit |
| CN204030996U (en) * | 2014-05-26 | 2014-12-17 | 昂宝电子（上海）有限公司 | A kind of reverse exciting switching voltage regulator circuit |
Non-Patent Citations (1)
| Title |
|---|
| 小桂子HAPPY8: "OB3330X Datasheet_CN", 《百度文库-HTTPS://WENKU.BAIDU.COM/VIEW/E91F64AA26FFF705CC170ABD.HTML》 * |
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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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181221 |
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| RJ01 | Rejection of invention patent application after publication |