CN108418404A - It is a kind of to enter the controllable circuit of interval point and its method - Google Patents
It is a kind of to enter the controllable circuit of interval point and its method Download PDFInfo
- Publication number
- CN108418404A CN108418404A CN201810272678.3A CN201810272678A CN108418404A CN 108418404 A CN108418404 A CN 108418404A CN 201810272678 A CN201810272678 A CN 201810272678A CN 108418404 A CN108418404 A CN 108418404A
- Authority
- CN
- China
- Prior art keywords
- unit
- frequency modulation
- interval
- signal
- output signal
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000002955 isolation Methods 0.000 claims description 26
- 230000005611 electricity Effects 0.000 claims description 9
- 238000005516 engineering process Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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
- H02M1/00—Details of apparatus for conversion
- H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
- H02M1/088—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices
- H02M1/092—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices the control signals being transmitted optically
-
- 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
- H02M1/00—Details of apparatus for conversion
- H02M1/0048—Circuits or arrangements for reducing losses
- H02M1/0054—Transistor switching losses
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
Include current setting unit setting, processing unit, frequency modulation unit and soft start unit the present invention relates to a kind of controllable circuit of interval point and its method, the circuit of entering；Current setting unit setting converts current signal to voltage signal for setting electric current as desired；Processing unit is used for receiving voltage signal, and handles voltage signal, forms output signal；Frequency modulation unit, for according to the voltage swing in output signal, carrying out frequency modulation processing；Soft start unit, for being blocked or being connected according to frequency modulation handling result, so that control chip U3 shutdowns or startup.The present invention is handled voltage signal using processing unit, export high level or low level output signal, frequency modulation processing is carried out according to output signal by frequency modulation unit, the conducting of soft start unit is driven according to frequency modulation result or is blocked, the shutdown or startup of drive control chip U3 realizes the controllability for entering interval point, enhances circuit reliability, switching loss reduces, and improves light-load efficiency.
Description
Technical field
The present invention relates to power supplys, more specifically refer to that a kind of put into interval can control circuit and its method.
Background technology
LED drive power is the power supply changeover device that power supply supply is converted to specific voltage and current to drive LED luminous,
Under normal conditions, the input of LED drive power includes high pressure industrial frequency AC (i.e. alternating current), low-voltage direct, high voltage direct current, low pressure height
Frequency exchange (output of such as electronic transformer)；Existing market LED drive power increasingly miniaturization develops, switching frequency
It is higher and higher, therefore, it is necessary to control LED drive power to enter intermittent condition, to ensure the service life of LED drive power.
Due in different LED drive powers LLC control chip enter interval put it is uncontrollable, as shown in Figure 1, needing to reach
Very high switching frequency can enter discontinuous operation, in this way, it is just very big to metal-oxide-semiconductor switching loss, it could even be possible to damaging
Metal-oxide-semiconductor phenomenon, light-load efficiency are low；It is susceptible to hard switching phenomenon.
Therefore, it is necessary to design it is a kind of putting controllable circuit into interval, realize enhancing circuit reliability, switching loss
Reduce, improves light-load efficiency.
Invention content
It is an object of the invention to overcome the deficiencies of existing technologies, a kind of put into interval is provided and can control circuit and its side
Method.
To achieve the above object, the present invention uses following technical scheme：It is a kind of to enter the controllable circuit of interval point, including electricity
Flow setup unit, processing unit, frequency modulation unit and soft start unit；Wherein, the current setting unit setting, for as desired
Setting electric current converts current signal to voltage signal；The processing unit is used for receiving voltage signal, and to voltage signal
It is handled, forms output signal；The frequency modulation unit, for according to the voltage swing in output signal, carrying out frequency modulation processing；
The soft start unit, for being blocked or being connected according to frequency modulation handling result, so that control chip U3 shutdowns or startup.
Its further technical solution is：The soft start unit includes capacitance C29.
Its further technical solution is：The frequency modulation unit includes divider resistance R10, R12, R15, pull-up resistor R13, three
Pole pipe Q4, Q2；When the undertension in output signal is connected with triode Q4, then triode Q2 is connected, and soft start unit blocks,
Control chip U3 shutdowns；When the voltage in output signal is enough to triode Q4 conductings, then triode Q2 is blocked, and soft start unit is led
Logical, control chip U3 starts.
Its further technical solution is：The current setting unit setting includes divider resistance R100, swept resistance R52 and electricity
Hinder R56, R55.
Its further technical solution is：The processing unit includes current loop control module and light-coupled isolation module,
In, the current loop control module, for carrying out signal processing to current signal；The light-coupled isolation module, for according to electricity
The handling result for flowing ring control module, is connected and is blocked, and output signal is formed.
Its further technical solution is：The current loop control module includes voltage comparator U2B.
Its further technical solution is：The light-coupled isolation module includes light-coupled isolation chip OC1.
Its further technical solution is：The circuit further includes frequency setup unit, the frequency setup unit, for opening
The adjustment for closing frequency, to adjust the size of setting electric current.
Its further technical solution is：The frequency setup unit includes triode Q14 and divider resistance R41.
The control method that can control circuit is put the present invention also provides a kind of entrance interval, the method includes：
Setting electric current as desired converts current signal to voltage signal；
Receiving voltage signal, and voltage signal is handled, form output signal；
According to the voltage swing in output signal, frequency modulation processing is carried out；
It is blocked or is connected according to frequency modulation handling result, so that control chip U3 shutdowns or startup.
Compared with the prior art, the invention has the advantages that：A kind of interval that enters of the present invention puts controllable circuit, leads to
Setting current setting unit setting, processing unit, frequency modulation unit and soft start unit are crossed, voltage signal is carried out using processing unit
Processing exports high level or low level output signal, frequency modulation processing is carried out according to output signal by frequency modulation unit, according to tune
The conducting of frequency result driving soft start unit is blocked, and then the shutdown or startup of drive control chip U3, is realized and is entered interval
The controllability of point enhances circuit reliability, and switching loss reduces, and improves light-load efficiency.
The invention will be further described in the following with reference to the drawings and specific embodiments.
Description of the drawings
Fig. 1 is that a kind of interval that enters that the specific embodiment of the invention provides puts the structure diagram that can control circuit；
Fig. 2 is that a kind of interval that enters that the specific embodiment of the invention provides puts the circuit diagram that can control circuit.
Specific implementation mode
In order to more fully understand the present invention technology contents, with reference to specific embodiment to technical scheme of the present invention into
One step introduction and explanation, but not limited to this.
The specific embodiment as shown in Fig. 1~2, it is provided in this embodiment it is a kind of entering interval and put can control circuit, can be with
It is used in the power circuits such as Switching Power Supply and LED drive power, realizes that enhancing circuit reliability, switching loss reduce, carry
High light-load efficiency.
As shown in Figure 1, present embodiments providing a kind of put into interval can control circuit comprising current setting unit setting 1,
Processing unit 2, frequency modulation unit 3 and soft start unit 4；It wherein, current setting unit setting 1 will for setting electric current as desired
Current signal is converted into voltage signal；Processing unit 2 is used for receiving voltage signal, and handles voltage signal, is formed defeated
Go out signal；Frequency modulation unit 3, for according to the voltage swing in output signal, carrying out frequency modulation processing；Soft start unit 4 is used for root
It is blocked or is connected according to frequency modulation handling result, so that control chip U3 shutdowns or startup.
Preferably, soft start unit 4 includes capacitance C29, and capacitance C29 is connect with the driving end feet of control chip U3, with
Drive control chip U3 is closed or normal startup.
In addition, for some embodiments, above-mentioned frequency modulation unit 3 includes divider resistance R10, R12, R15, pull-up electricity
Hinder R13, triode Q4, Q2；When the undertension in output signal is connected with triode Q4, then triode Q2 is connected, soft start
Unit 4 blocks, the U3 shutdowns of control chip；When the voltage in output signal is enough to triode Q4 conductings, then triode Q2 is blocked, soft
Start unit 4 is connected, and control chip U3 starts.
Specifically, for Fig. 2, the voltage in output signal is also base voltage in triode Q4, and the circuit is in work
When making, it is divided into two states：
State one：When base voltage is not enough to triode Q4 conductings in triode Q4, the ground level of triode Q2 passes through pull-up
R13 resistance is connected so that the SS feet for the control chip U3 that soft start unit 4 connects drag down, and then control chip U3 shutdowns, electric current
Lower into state two；
State two：Electric current influences the handling result of processing unit 2 after declining, so that the base voltage in triode Q4 is electricity
R10, R12, R13 partial pressure are hindered, is enough to that triode Q4 is allowed to be connected, also by the voltage pull-down of the ground level in triode Q2, triode Q2
It is not turned on, soft start unit 4 is connected, and then controls chip U3 and normally start, and returns to state one, and then reaches into interval mesh
's.
Judgement selection is carried out to voltage by frequency modulation unit 3, reaches the influence to soft start unit 4, and then drive control
The shutdown or startup of chip U3 reaches into interval and puts controllable effect.
Further, for some embodiments, current setting unit setting 1 includes divider resistance R100, swept resistance
R52 and resistance R56, R55.Current signal is carried out by divider resistance R100, swept resistance R52 and resistance R56, R55
Conversion forms voltage signal, in order to which subsequent drive frequency modulation unit 3 works.
In addition, in the above-described embodiment, processing unit 2 includes current loop control module 21 and light-coupled isolation module
22, wherein current loop control module 21, for carrying out signal processing to current signal；Light-coupled isolation module 22, for according to electricity
The handling result for flowing ring control module 21, is connected and is blocked, and output signal is formed.
Preferably, current loop control module 21 includes voltage comparator U2B.
Preferably, light-coupled isolation module 22 includes light-coupled isolation chip OC1.
Wherein, above-mentioned current loop control module 21 further include be connected to voltage comparator U2B reverse input end and
Shunt capacitance C32, shunt capacitance C3 between output end and resistance R31, wherein shunt capacitance C3 and resistance R31 and side
Road capacitance C32 is in parallel, using the interference in input signal as object is filtered out, prevents interference signal from returning to power supply.
The inverting input of above-mentioned voltage comparator U2B is connected with capacitance C23, C52, and capacitance C23, C52 ground connection is formed
Zero-crossing comparator circuit, to judge the variation of voltage.
In addition, anti-reverse diode is connected between the output end of voltage comparator U2B between light-coupled isolation chip OC1
D2。
Pin 1 for above-mentioned light-coupled isolation chip OC1 and pin 2 are also associated with resistance R2 between pressing.
In addition, in the above-described embodiment, above-mentioned circuit further includes frequency setup unit 5, the frequency setup unit
5, it is used for the adjustment of switching frequency, to adjust the size of setting electric current.
Specifically, above-mentioned frequency setup unit 5 includes triode Q14 and divider resistance R41, utilizes control chip U3
Triode Q14 and divider resistance R41 is controlled, to carry out the adjustment of switching frequency, adjusts setting electric current.
As shown in Fig. 2, the voltage in output signal is also base voltage in triode Q4, which at work, is divided into
Two states：
State one：Become smaller by 1 setting electric current of current setting unit setting, the positive terminal voltage of voltage comparator U2B is less than negative terminal
Voltage, according to amplifier characteristic, voltage comparator U2B outputs are low level, by light-coupled isolation module 22, light-coupled isolation chip
The pin 1 of OC1 reaches optocoupler conducting voltage with 2 pressure difference of pin, and the pin 3 and pin 4 of light-coupled isolation chip OC1 are connected, quite
In divider resistance R12 and divider resistance R13 and upper divider resistance R15 so that the base voltage in triode Q4 is not enough to three poles
Pipe Q4 conductings, the ground level of triode Q2 is by pulling up R3 conductings so that the SS feet of soft start unit 4 drag down, and soft start unit 4 is cut
It is disconnected, and then the U3 shutdowns of drive control chip, electric current declines, into state two；
State two：By the adjusting of circuit, electric current declines, and in turn, the negative terminal voltage of voltage comparator U2B is less than anode electricity
Pressure, according to amplifier characteristic, voltage comparator U2B outputs are high level, by light-coupled isolation unit, light-coupled isolation chip OC1's
Pin 1 is not up to optocoupler conducting voltage with 2 pressure difference of pin, and light-coupled isolation chip OC1 optocouplers are not turned on, the ground level in triode Q4
Voltage is divider resistance R10, partial pressure R12 and partial pressure R13 are divided, and is enough to that triode Q4 is allowed to be connected, ground level in triode Q2 is drawn
Low, triode Q2 is not turned on, and soft start unit 4 is connected, and then drive control U3 normally starts, and into state one, and then reaches
Into interval purpose, to reduce switching loss, and light-load efficiency is improved.
A kind of above-mentioned interval that enters puts controllable circuit, passes through and current setting unit setting 1, processing unit 2, frequency modulation list is arranged
Member 3 and soft start unit 4, are handled voltage signal using processing unit 2, export high level or low level output
Signal carries out frequency modulation processing by frequency modulation unit 3 according to output signal, according to frequency modulation result drive soft start unit 4 conducting or
It blocks, and then the shutdown or startup of drive control chip U3, realizes the controllability for entering interval point, enhance circuit reliability,
Switching loss reduces, and improves light-load efficiency.
In addition, the present invention also provides a kind of control method for entering interval and putting controllable circuit, this method includes：
Setting electric current as desired converts current signal to voltage signal；
Receiving voltage signal, and voltage signal is handled, form output signal；
According to the voltage swing in output signal, frequency modulation processing is carried out；
It is blocked or is connected according to frequency modulation handling result, so that control chip U3 shutdowns or startup.
Specifically, state one：Become smaller by 1 setting electric current of current setting unit setting, the positive terminal voltage of voltage comparator U2B is small
In negative terminal voltage, according to amplifier characteristic, voltage comparator U2B outputs are low level, by light-coupled isolation module 22, light-coupled isolation
The pin 1 of chip OC1 reaches optocoupler conducting voltage with 2 pressure difference of pin, and the pin 3 and pin 4 of light-coupled isolation chip OC1 are connected,
It is equivalent to divider resistance R12 and divider resistance R13 and upper divider resistance R15 so that the base voltage in triode Q4 is not enough to
Triode Q4 conductings, the ground level of triode Q2 is by pulling up R3 conductings so that the SS feet of soft start unit 4 drag down, soft start list
Member 4 is blocked, and then the U3 shutdowns of drive control chip, and electric current declines, into state two；
State two：By the adjusting of circuit, electric current declines, and in turn, the negative terminal voltage of voltage comparator U2B is less than anode electricity
Pressure, according to amplifier characteristic, voltage comparator U2B outputs are high level, by light-coupled isolation unit, light-coupled isolation chip OC1's
Pin 1 is not up to optocoupler conducting voltage with 2 pressure difference of pin, and light-coupled isolation chip OC1 optocouplers are not turned on, the ground level in triode Q4
Voltage is divider resistance R10, partial pressure R12 and partial pressure R13 are divided, and is enough to that triode Q4 is allowed to be connected, ground level in triode Q2 is drawn
Low, triode Q2 is not turned on, and soft start unit 4 is connected, and then drive control U3 normally starts, and into state one, and then reaches
Into interval purpose.
A kind of above-mentioned interval that enters puts the method for can control, by handling voltage signal, export high level or
Low level output signal carries out frequency modulation processing according to output signal, according to frequency modulation result drive soft start unit 4 conducting or
It blocks, and then the shutdown or startup of drive control chip U3, realizes the controllability for entering interval point, enhance circuit reliability,
Switching loss reduces, and improves light-load efficiency.
It is above-mentioned only with embodiment come the technology contents that further illustrate the present invention, in order to which reader is easier to understand, but not
It represents embodiments of the present invention and is only limitted to this, any technology done according to the present invention extends or recreation, by the present invention's
Protection.Protection scope of the present invention is subject to claims.
Claims (10)
1. a kind of interval that enters puts controllable circuit, which is characterized in that including current setting unit setting, processing unit, frequency modulation unit
And soft start unit；Wherein, the current setting unit setting converts current signal to electricity for setting electric current as desired
Press signal；The processing unit is used for receiving voltage signal, and handles voltage signal, forms output signal；The tune
Frequency unit, for according to the voltage swing in output signal, carrying out frequency modulation processing；The soft start unit, for according to frequency modulation
Handling result is blocked or is connected, so that control chip U3 shutdowns or startup.
2. a kind of interval that enters according to claim 1 puts controllable circuit, which is characterized in that the soft start unit packet
Include capacitance C29.
3. it is according to claim 1 it is a kind of entering interval and put can control circuit, which is characterized in that the frequency modulation unit includes
Divider resistance R10, R12, R15, pull-up resistor R13, triode Q4, Q2；When the undertension in output signal is with triode Q4
It is connected, then triode Q2 is connected, and soft start unit blocks, the U3 shutdowns of control chip；When the voltage in output signal is enough to three poles
Pipe Q4 conductings, then triode Q2 is blocked, and soft start unit conducting, control chip U3 starts.
4. a kind of interval that enters according to claim 1 puts controllable circuit, which is characterized in that the current setting unit setting
Including divider resistance R100, swept resistance R52 and resistance R56, R55.
5. a kind of interval that enters according to any one of claims 1 to 4 puts controllable circuit, which is characterized in that the place
It includes current loop control module and light-coupled isolation module to manage unit, wherein the current loop control module, for believing electric current
Number carry out signal processing；The light-coupled isolation module is connected and is cut for the handling result according to current loop control module
It is disconnected, form output signal.
6. a kind of interval that enters according to claim 5 puts controllable circuit, which is characterized in that the current loop control mould
Block includes voltage comparator U2B.
7. a kind of interval that enters according to claim 6 puts controllable circuit, which is characterized in that the light-coupled isolation module
Including light-coupled isolation chip OC1.
8. a kind of interval that enters according to claim 5 puts controllable circuit, which is characterized in that the circuit further includes frequency
Rate setup unit, the frequency setup unit are used for the adjustment of switching frequency, to adjust the size of setting electric current.
9. a kind of interval that enters according to claim 8 puts controllable circuit, which is characterized in that the frequency setup unit
Including triode Q14 and divider resistance R41.
10. a kind of interval that enters puts the control method that can control circuit, which is characterized in that the method includes：
Setting electric current as desired converts current signal to voltage signal；
Receiving voltage signal, and voltage signal is handled, form output signal；
According to the voltage swing in output signal, frequency modulation processing is carried out；
It is blocked or is connected according to frequency modulation handling result, so that control chip U3 shutdowns or startup.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810272678.3A CN108418404B (en) | 2018-03-29 | 2018-03-29 | Circuit capable of controlling intermittent point entering and method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810272678.3A CN108418404B (en) | 2018-03-29 | 2018-03-29 | Circuit capable of controlling intermittent point entering and method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108418404A true CN108418404A (en) | 2018-08-17 |
| CN108418404B CN108418404B (en) | 2024-01-30 |
Family
ID=63132713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810272678.3A Active CN108418404B (en) | 2018-03-29 | 2018-03-29 | Circuit capable of controlling intermittent point entering and method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108418404B (en) |
Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102496905A (en) * | 2011-12-07 | 2012-06-13 | 广州视源电子科技有限公司 | High-voltage open-circuited protection circuit of LCD (Liquid Crystal Display) screen |
| CN202309506U (en) * | 2011-10-12 | 2012-07-04 | 深圳麦格米特电气股份有限公司 | Chip-soft-start control circuit |
| CN202364110U (en) * | 2011-11-01 | 2012-08-01 | 深圳麦格米特电气股份有限公司 | High-voltage inversion protection circuit |
| CN102624241A (en) * | 2012-03-28 | 2012-08-01 | 无锡安特源科技有限公司 | Self-adaptive regulation structure for dead zone time of LLC |
| CN104022489A (en) * | 2014-06-30 | 2014-09-03 | 中国电子科技集团公司第四十三研究所 | Power supply short circuit protection system with automatic restarting and soft-starting functions and protection method |
| CN204013219U (en) * | 2014-07-02 | 2014-12-10 | 成都芯源系统有限公司 | Control circuit for switching converter |
| US20150162773A1 (en) * | 2013-12-06 | 2015-06-11 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | Flyback quick start driving circuit and driving method |
| CN105471086A (en) * | 2015-12-25 | 2016-04-06 | 深圳茂硕电子科技有限公司 | Redundant power system and current adjustment method |
| CN105592590A (en) * | 2016-01-05 | 2016-05-18 | 茂硕电源科技股份有限公司 | Constant-power LED driving power supply circuit system |
| CN105790564A (en) * | 2016-04-13 | 2016-07-20 | 深圳市赢新光电发展有限公司 | Starting circuit and switch power supply |
| CN205647327U (en) * | 2016-03-31 | 2016-10-12 | 比亚迪股份有限公司 | Machine controller's drive circuit and have its vehicle |
| CN106376139A (en) * | 2016-11-02 | 2017-02-01 | 东莞市石龙富华电子有限公司 | Method and switch for performing soft switching on high-power LED power supply with low stand-by power consumption |
| CN106786667A (en) * | 2016-12-23 | 2017-05-31 | 芜湖国睿兆伏电子有限公司 | A kind of phase shift frequency modulation mixing control circuit for LLC resonant powers |
| CN206364500U (en) * | 2016-11-25 | 2017-07-28 | 深圳市普德新星电源技术有限公司 | Controlled resonant converter and its current foldback circuit |
| CN107196520A (en) * | 2017-07-27 | 2017-09-22 | 桐庐恒英电子有限公司 | A kind of resonance circuit |
| CN107302303A (en) * | 2017-08-24 | 2017-10-27 | 深圳创维－Rgb电子有限公司 | It is a kind of to reduce control circuit, driving power supply and the television set of output voltage ripple |
| CN207939397U (en) * | 2018-03-29 | 2018-10-02 | 深圳茂硕电子科技有限公司 | It is a kind of to enter the controllable circuit of interval point |
-
2018
- 2018-03-29 CN CN201810272678.3A patent/CN108418404B/en active Active
Patent Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202309506U (en) * | 2011-10-12 | 2012-07-04 | 深圳麦格米特电气股份有限公司 | Chip-soft-start control circuit |
| CN202364110U (en) * | 2011-11-01 | 2012-08-01 | 深圳麦格米特电气股份有限公司 | High-voltage inversion protection circuit |
| CN102496905A (en) * | 2011-12-07 | 2012-06-13 | 广州视源电子科技有限公司 | High-voltage open-circuited protection circuit of LCD (Liquid Crystal Display) screen |
| CN102624241A (en) * | 2012-03-28 | 2012-08-01 | 无锡安特源科技有限公司 | Self-adaptive regulation structure for dead zone time of LLC |
| US20150162773A1 (en) * | 2013-12-06 | 2015-06-11 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | Flyback quick start driving circuit and driving method |
| CN104022489A (en) * | 2014-06-30 | 2014-09-03 | 中国电子科技集团公司第四十三研究所 | Power supply short circuit protection system with automatic restarting and soft-starting functions and protection method |
| CN204013219U (en) * | 2014-07-02 | 2014-12-10 | 成都芯源系统有限公司 | Control circuit for switching converter |
| CN105471086A (en) * | 2015-12-25 | 2016-04-06 | 深圳茂硕电子科技有限公司 | Redundant power system and current adjustment method |
| CN105592590A (en) * | 2016-01-05 | 2016-05-18 | 茂硕电源科技股份有限公司 | Constant-power LED driving power supply circuit system |
| CN205647327U (en) * | 2016-03-31 | 2016-10-12 | 比亚迪股份有限公司 | Machine controller's drive circuit and have its vehicle |
| CN105790564A (en) * | 2016-04-13 | 2016-07-20 | 深圳市赢新光电发展有限公司 | Starting circuit and switch power supply |
| CN106376139A (en) * | 2016-11-02 | 2017-02-01 | 东莞市石龙富华电子有限公司 | Method and switch for performing soft switching on high-power LED power supply with low stand-by power consumption |
| CN206364500U (en) * | 2016-11-25 | 2017-07-28 | 深圳市普德新星电源技术有限公司 | Controlled resonant converter and its current foldback circuit |
| CN106786667A (en) * | 2016-12-23 | 2017-05-31 | 芜湖国睿兆伏电子有限公司 | A kind of phase shift frequency modulation mixing control circuit for LLC resonant powers |
| CN107196520A (en) * | 2017-07-27 | 2017-09-22 | 桐庐恒英电子有限公司 | A kind of resonance circuit |
| CN107302303A (en) * | 2017-08-24 | 2017-10-27 | 深圳创维－Rgb电子有限公司 | It is a kind of to reduce control circuit, driving power supply and the television set of output voltage ripple |
| CN207939397U (en) * | 2018-03-29 | 2018-10-02 | 深圳茂硕电子科技有限公司 | It is a kind of to enter the controllable circuit of interval point |
Non-Patent Citations (1)
| Title |
|---|
| 王建新: "谐振式软开关恒流充电电源的研究", 《CNKI全国硕士论文库》, no. 5, pages 47 - 48 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108418404B (en) | 2024-01-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101888730B (en) | Alternating current constant current source LED driving circuit | |
| CN103841725B (en) | To release control module, controllable silicon light modulation LED drive circuit and system | |
| CN110416028A (en) | Contactor voltage control circuit and contactor system | |
| CN201994528U (en) | Intelligent socket | |
| CN104010148B (en) | Power circuit and television set | |
| CN207939397U (en) | It is a kind of to enter the controllable circuit of interval point | |
| CN205584163U (en) | Washing machine and switching on and off circuit thereof | |
| CN206292918U (en) | For the external breaker of pre-payment of electric energy meter | |
| CN202503437U (en) | Low-power consumption standby circuit of power-frequency power transformer | |
| CN108418404A (en) | It is a kind of to enter the controllable circuit of interval point and its method | |
| CN203788514U (en) | Discharge control module, silicon controlled rectifier light dimming LED drive circuit and system | |
| CN201113378Y (en) | Electronic current-limiting device | |
| CN104767408A (en) | Alternating-current-direct-current conversion switching power source | |
| CN206865428U (en) | Standby power-off energy-saving device for intermittent electric equipment | |
| CN206517300U (en) | A kind of constant current input power controls circuit | |
| CN109947166A (en) | A kind of safe and reliable constant pressure and flow control electric current | |
| CN209471390U (en) | Band adjusts circuit by the PWM feedback of wave control function | |
| CN209330257U (en) | Energy-saving control device based on TV signal | |
| CN201352759Y (en) | Power source device with low standby power | |
| CN204836117U (en) | Intelligence switch power | |
| CN107272458A (en) | A kind of intelligent switch controller based on electric main | |
| CN209104784U (en) | Residual current load relay | |
| CN102545576A (en) | Low-power consumption standby circuit of power-frequency power supply transformer | |
| CN207399047U (en) | Supply voltage conversion circuit and L ED power supply system | |
| CN107069909A (en) | A kind of energy-saving mobile phone charger that can be automatically powered off |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |