CN108599575A - In point oscillation LED power constant-current source - Google Patents
In point oscillation LED power constant-current source Download PDFInfo
- Publication number
- CN108599575A CN108599575A CN201810440055.2A CN201810440055A CN108599575A CN 108599575 A CN108599575 A CN 108599575A CN 201810440055 A CN201810440055 A CN 201810440055A CN 108599575 A CN108599575 A CN 108599575A
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- Prior art keywords
- oscillation
- capacitance
- output
- bistable
- power
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- 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
- H02M3/33569—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 having several active switching elements
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
Point oscillation LED power constant-current source the present invention relates in, it can be widely used in outside LED indoor and illuminate, light source of charger, invariable power AC DC conversions, the power supply in the fields such as DC DC conversions is equipped with, if T1 is first turned on when being powered as shown in the figure, supply voltage is obtained on R4, T2 ends, stablize offer T1 with R6 direct current positively biaseds by R3 to be connected, so it is that C3 passes through T1 all the way, C5, L2, it discharges in the circuits D2, another way is by positive pole through T1, C5, L2, D2, C4 is negative to power supply, when being charged to close to current potential on R6 to capacitance C4, T1 slowly ends, current potential on R4 reduces, T2 is begun to turn on, pass through positive feedback, T2 is fully on, T1 is completely switched off, complete a cycle of oscillation, C5 obtains output oscillating voltage.
Description
Technical field
Point oscillation LED power constant-current source the present invention relates in, can be widely used in illumination outside LED indoor, charger electricity
The power supply in the fields such as source, invariable power AC-DC conversions, DC-DC conversions is equipped with.
Background technology
The common non-isolated DC/DC power supplys of tradition are usually module encapsulation, these circuit board frames with standard pin,
Really achieve progress in terms of reducing design complexity, but its size is difficult for the applications of many limited spaces and is received, new electricity
Source needs to make progress in terms of the form-factor of reduction, to improve the flexibility of design.
Invention content
Directly just being managed by field-effect tube in being formed with negative pipe divides bistable oscillation to export, load respectively with two triodes
Source series, transistor connects bistable state with existing digital circuit parallel connection bistable state as, and tool is triggered there are two stable state
Bistable state overturning is to divide capacitance in two, and respectively voltage charge and discharge by turns between each other, single steady during output power
Determine state and allow a corresponding concatenated capacitance, when being discharged to one rational difference of capacitance current potential in load, to leading
Logical triode source electrode progress is reverse-biased, i.e., grid loses gate voltage to source electrode, and the triode after being connected is allowed to end, another
The grid of triode obtains the partial pressure by two biasing resistors when ending from other side, passes through positive feedback further cut-off pair rapidly
Side obtains the enough current potentials of grid and enters another stable state, and centering divides the charge and discharge that capacitance replaces, constantly
Bistable state overturning is repeated, series connection transient state is completed and higher-order of oscillation output is realized without stable state to DC inversion, or series connection.Due to needing
The output that loads filters to be made reverse-biased to retain discharge potential, and unidirectional output is doing charge power supply particularly suitable for LED power
When, can by digital process to bistable any one resistance of connecting with optocoupler short circuit, can reach and bistable state failure of oscillation is allowed to stop
Output obtains charging short pulse and completely fills the purpose for stopping filling.Made with forward voltage drop when with multiple series diodes and a capacitance
When to load reverse-biased, recommending output mode is can get in the middle separated time of capacitance, but amplitude is had adjusted even by optocoupler, in turn
Frequency inverse change, the not adjusting of duty ratio are also unsuitable for doing the continuous electrodeless negative-feedback tune of load needs changed
The power supply of section.
Description of the drawings
It is as shown in Figure 1 in the application present invention points of oscillation LED power constant current source circuit diagram
Specific implementation mode
It as shown is and vibrates LED power constant current source circuit diagram using in the present invention points, C1 is ac buck and limits in figure
Surely peak power output is vibrated, BRIDGE is rectifier bridge, and input 220V exchanges, output ripple direct current is through resistance R1, to input
Voltage is tentatively filtered, and C2 is input filter capacitor, and to adapt to the maximum non-electrolytic capacitor of high temperature, C3, C4 divide capacitance in being
Or oscillating capacitance, high voltage are that high frequency is avoided to cause to puncture, D1, D2 are that output one-way commutation doubles as coil afterflow, and L1, L2 are
Buck inductor can be patch mutual inductor, and two-wire reversely goes out pin with around intersection, and R2 is LED current-limiting resistances, and C5 is output filtering
Capacitance, LED are output loading, and T1 is N pipes, 8 foot of the matched pair transistor encapsulation that T2 is P pipes, and R3 is T1 pullup resistors, and R6 is T1 biass
Resistance provides T1 conductings by the current potential on R6, and R4 is T2 negative bias resistance, and R5 is T2 bias resistances, and T2 is provided by the current potential on R5
The condition of conducting, starting of oscillation is that the anti-of biasing resistor divides higher than load voltage.If T1 is first turned on when energization, obtained on R4
Supply voltage, T2 end, and stablizing offer T1 with R6 direct current positively biaseds by R3 is connected, then being that C3 passes through T1, C5, L2, D2 all the way
Circuit is discharged, and another way is born through T1, C5, L2, D2, C4 to power supply by positive pole, charged to close to the electricity on R6 to capacitance C4
When position, T1 slowly ends, and the current potential on R4 reduces, and T2 is begun to turn on, and by positive feedback, T2 is fully on, and T1 is completely switched off, complete
At a cycle of oscillation, C5 obtains output oscillating voltage.
Claims (1)
1. the oscillation LED power constant-current source the present invention relates in point, can be widely used in illumination outside LED indoor, light source of charger,
The power supply in the fields such as invariable power AC-DC conversions, DC-DC conversions is equipped with, and is directly just managed in being formed with negative pipe and is divided by field-effect tube
Bistable oscillation exports, and loads the source series with two triodes respectively, transistor series connection bistable state and existing digital circuit
Bistable state in parallel is the same, and there are two stable states for tool, and triggering bistable state overturning is to divide capacitance in two, in output power process
In respectively voltage charge and discharge by turns between each other, single stable state allows a corresponding concatenated capacitance, be discharged to in load
One rational difference of capacitance current potential when, the triode source electrode that is being connected is carried out reverse-biased, i.e., grid loses door to source electrode
Pole tension allows the triode after being connected to end, by two biased electricals when the grid acquisition of another triode ends from other side
The partial pressure of resistance further ends rapidly other side by positive feedback, obtains the enough current potentials of grid and enters another stable state, and
Centering divides the charge and discharge that capacitance replaces, and constantly repeats bistable state overturning, completes series connection transient state to DC inversion, or
Series connection realizes higher-order of oscillation output without stable state, due to need the output on loading to filter retain discharge potential make it is reverse-biased, unidirectionally
Output is particularly suitable for LED power, can be by digital process to any one bistable resistance of connecting when doing charge power supply
With optocoupler short circuit, it can reach and bistable state failure of oscillation is allowed to stop output, obtain charging short pulse and completely fill the purpose for stopping filling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810440055.2A CN108599575B (en) | 2018-05-08 | 2018-05-08 | A kind of LED power constant-current source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810440055.2A CN108599575B (en) | 2018-05-08 | 2018-05-08 | A kind of LED power constant-current source |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108599575A true CN108599575A (en) | 2018-09-28 |
| CN108599575B CN108599575B (en) | 2019-10-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810440055.2A Active CN108599575B (en) | 2018-05-08 | 2018-05-08 | A kind of LED power constant-current source |
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| Country | Link |
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| CN (1) | CN108599575B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113285679A (en) * | 2021-04-23 | 2021-08-20 | 中国电子科技集团公司第二十九研究所 | Ultra-wideband miniaturized amplitude expanding circuit |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102361400A (en) * | 2011-10-12 | 2012-02-22 | 杨云柳 | Power constant current source and application of multi-silicon switching tube |
| CN103441667A (en) * | 2013-09-18 | 2013-12-11 | 湘潭大学 | Direct current control device applied to multilevel energy storage system |
| CN104009647A (en) * | 2014-06-16 | 2014-08-27 | 杨云柳 | Thyristor voltage converter |
| CN205986215U (en) * | 2016-07-18 | 2017-02-22 | 周钰朋 | Lithium cell group charger |
| CN106793222A (en) * | 2017-03-06 | 2017-05-31 | 浙江亿洋智能装备科技股份有限公司 | Infrared temperature detecting wireless transmits IGBT full-bridge energy-conservation induction heating equipments |
| CN106838658A (en) * | 2017-03-01 | 2017-06-13 | 武汉豪岩照明电子有限公司 | Light lock vibration LED glass bulb bulb lamps |
-
2018
- 2018-05-08 CN CN201810440055.2A patent/CN108599575B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102361400A (en) * | 2011-10-12 | 2012-02-22 | 杨云柳 | Power constant current source and application of multi-silicon switching tube |
| CN103441667A (en) * | 2013-09-18 | 2013-12-11 | 湘潭大学 | Direct current control device applied to multilevel energy storage system |
| CN104009647A (en) * | 2014-06-16 | 2014-08-27 | 杨云柳 | Thyristor voltage converter |
| CN205986215U (en) * | 2016-07-18 | 2017-02-22 | 周钰朋 | Lithium cell group charger |
| CN106838658A (en) * | 2017-03-01 | 2017-06-13 | 武汉豪岩照明电子有限公司 | Light lock vibration LED glass bulb bulb lamps |
| CN106793222A (en) * | 2017-03-06 | 2017-05-31 | 浙江亿洋智能装备科技股份有限公司 | Infrared temperature detecting wireless transmits IGBT full-bridge energy-conservation induction heating equipments |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113285679A (en) * | 2021-04-23 | 2021-08-20 | 中国电子科技集团公司第二十九研究所 | Ultra-wideband miniaturized amplitude expanding circuit |
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| Publication number | Publication date |
|---|---|
| CN108599575B (en) | 2019-10-11 |
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Effective date of registration: 20210128 Address after: 322200 3rd floor, no.966-1 yidianhong Avenue, Xianhua street, Pujiang County, Jinhua City, Zhejiang Province Patentee after: Pujiang xiulong Intelligent Technology Co.,Ltd. Address before: 430012 1st floor, building 10, daijiashan science and technology venture City, 888 Hanhuang Road, Jiang'an District, Wuhan City, Hubei Province Patentee before: WUHAN HAOYAN LIGHTING ELECTRONICS Co.,Ltd. |