CN109905941A - The multi-modal wide-range input voltage LED driver without electrolytic capacitors of acyclic type - Google Patents
The multi-modal wide-range input voltage LED driver without electrolytic capacitors of acyclic type Download PDFInfo
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- CN109905941A CN109905941A CN201910170219.9A CN201910170219A CN109905941A CN 109905941 A CN109905941 A CN 109905941A CN 201910170219 A CN201910170219 A CN 201910170219A CN 109905941 A CN109905941 A CN 109905941A
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- 125000002015 acyclic group Chemical group 0.000 title claims abstract description 13
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- 238000010586 diagram Methods 0.000 description 3
- 230000005404 monopole Effects 0.000 description 2
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Abstract
The invention discloses a kind of multi-modal wide-range input voltage LED driver without electrolytic capacitors of acyclic type, including AC power source, filter inductance, filter capacitor, 4 rectifier diodes, 4 switching tubes, 2 input capacitances, 2 booster diodes, boost inductance, 2 output diodes, 2 LED loads, outputting inductance, 2 output capacitances, wherein 2 switching tubes constitute two-way switch.When input voltage is 220V, two-way switch is disconnected, and LED driver works in half pressure input pattern, low busbar voltage and high efficiency may be implemented；When input voltage is 110V, two-way switch conducting, LED driver works in total pressure input pattern, reduces the conduction loss of bridge rectifier diode and other 2 switching tubes, improve efficiency of the system in low input.The present invention has many advantages, such as high efficiency, is operable with that wide range input, busbar voltage be low, no electrolytic capacitor.
Description
Technical field
The present invention relates to the technical field of LED driving, refer in particular to a kind of multi-modal wide-range input voltage of acyclic type without
Electrolytic capacitor LED driver.
Background technique
Traditional LED driver topology is made of two-level configuration: PFC (PFC) grade and half-bridge DC/DC transformation
Device grade.Although the independence of two-level configuration simplifies design, control complexity and system cost are increase accordingly.Simultaneously as
More control circuits and switching device are needed, it is relatively inefficient.It is thereby achieved that control circuit and switching device shared
Acyclic type LED driver is widely used.Traditional monopole has efficient, high without bridge boost PFC LED driver
The advantages that power factor, but due to working in DCM mode, cause busbar voltage excessively high, under normal conditions VBus>2Vin(VinIt is defeated
Enter voltage magnitude).This not only proposes requirements at the higher level to the pressure resistance of bus capacitor, but also so that switching tube is born bigger voltage and answer
Power.When input voltage virtual value is 220V, VBus600V or more can be reached.Therefore monopole is normal without bridge boost PFC LED driver
For low input occasion, limit its scope of application.Although bridge-type boost PFC LED driver can effectively reduce bus
Voltage, but it includes full-bridge rectification structures, and higher conduction loss can be caused in low input, and system effectiveness is low.
Summary of the invention
It is an object of the invention to overcome conventional LED driver that cannot take into account high input voltage and low input applied field
The shortcomings that conjunction, proposes a kind of electroless electricity of multi-modal wide-range input voltage of the acyclic type for being operable with wide-range input voltage
Hold LED driver, the busbar voltage of high efficiency and optimization may be implemented.
To achieve the above object, technical solution provided by the present invention are as follows: the multi-modal wide-range input voltage of acyclic type without
Electrolytic capacitor LED driver, the LED driver include AC power source, filter inductance, filter capacitor, the first rectifier diode,
Second rectifier diode, third rectifier diode, the 4th rectifier diode, first switch tube, second switch, the first input electricity
Appearance, the second input capacitance, the first booster diode, the second booster diode, boost inductance, third switching tube, the 4th switching tube,
First output diode, the second output diode, the first LED load, the second LED load, outputting inductance, the first output capacitance,
Second output capacitance；One end of the AC power source and the anode of the first rectification diode, the cathode of the second rectification diode, filter
One end of wave capacitor is connected, and the other end is connected with one end of filter inductance；The other end and third of the filter inductance rectify
The drain electrode of the anode of diode, the cathode of the 4th rectifier diode, the other end of filter capacitor, first switch tube is connected；It is described
The source electrode of first switch tube is connected with the source electrode of second switch, constitutes two-way switch；The drain electrode of the second switch and the
The cathode of one input capacitance, the anode of the second input capacitance, one end of boost inductance are connected；The anode of first input capacitance
It is connected with the anode of the cathode of the first rectifier diode, the cathode of third rectifier diode, the first booster diode；Described second
The anode of the cathode of input capacitance and the second rectifier diode, the anode of the 4th rectifier diode, the second booster diode yin
Extremely it is connected；The other end and the source electrode of third switching tube, the drain electrode of the 4th switching tube, the first output diode of the boost inductance
Anode, the second LED load cathode be connected；The third switching tube drains and the cathode of the first booster diode, first
The anode of output capacitance is connected；The anode of the source electrode of 4th switching tube and the second booster diode, the second output capacitance
Cathode is connected；The cathode of first output diode is connected with the anode of the first LED load；The sun of second LED load
Pole is connected with the cathode of the second output diode；Anode, the output of the cathode and the second output diode of first LED load
One end of inductance is connected；The other end of the outputting inductance and the cathode of the first output capacitance, the positive phase of the second output capacitance
Even.
The LED driver passes through the conducting of first switch tube and second switch in different input voltages
With disconnection, different mode is worked in obtain high efficiency and low busbar voltage；When input voltage is in the range of 220-240Vrms
When interior, first switch tube and second switch shutdown, which works in half pressure input pattern, to obtain low bus
Voltage reduces the switch stress of device, and half presses the high input voltage in input pattern by the first input capacitance and the second input electricity
Appearance is divided equally, and boost inductance works in critical conduction mode；When input voltage is in the range of 100-120Vrms, first
Switching tube and second switch conducting, the LED driver work in total pressure input pattern, reduce diode current flow loss, mention
High system effectiveness, in total pressure input pattern, because the voltage of the first input capacitance and the second input capacitance is non-negative, third
Rectifier diode and the shutdown of the 4th rectifier diode, in the positive half period of input voltage, the voltage of the first input capacitance is equal to
The voltage of input voltage, the second input capacitance remains zero, in the negative half-cycle of input voltage, the voltage of the second input capacitance
Equal to input voltage, the voltage of the first input capacitance remains zero.
Compared with prior art, the present invention have the following advantages that with the utility model has the advantages that
1, in high input voltage, busbar voltage is reduced by shutdown first switch tube and second switch, is reduced
The voltage stress of bus capacitor and switching device.
2, in low input, reduce rectifier diode by opening first switch tube and second switch and open
Light pipe loss, improves system effectiveness.
3, no electrolytic capacitor, service life are long.
In short, the present invention can be realized according to the different operating of input voltage in different modes in high input voltage
Low busbar voltage realizes high efficiency in low input, and structure is simple, and control flexibly, has a good application prospect, and is worth
It promotes.
Detailed description of the invention
Fig. 1 is the multi-modal wide-range input voltage LED driver without electrolytic capacitors circuit diagram of acyclic type of the invention.
Fig. 2 a is the equivalent circuit diagram when present invention works in half pressure input pattern.
Fig. 2 b is the equivalent circuit diagram when present invention works in total pressure input pattern.
Specific embodiment
Below with reference to specific implementation case, the invention will be further described.
As shown in Figure 1, the multi-modal wide-range input voltage no electrolytic capacitor LED driving of acyclic type provided by the present embodiment
Device, including AC power source Vin, filter inductance Lf, filter capacitor Cf, the first rectifier diode D1, the second rectifier diode D2, third
Rectifier diode D3, the 4th rectifier diode D4, first switch tube S1, second switch S2, the first input capacitance C1, second input
Capacitor C2, the first booster diode D5, the second booster diode D6, boost inductance Lb, third switching tube S3, the 4th switching tube S4、
First output diode D7, the second output diode D8, the first LED load LED1, the second LED load LED2, outputting inductance Lr,
One output capacitance Cb1, the second output capacitance Cb2；The AC power source VinOne end with first rectification diode D1Anode,
Two rectification diode D2Cathode, filter capacitor CfOne end be connected, the other end and filter inductance LfOne end be connected；It is described
Filter inductance LfThe other end and third rectifier diode D3Anode, the 4th rectifier diode D4Cathode, filter capacitor Cf's
The other end, first switch tube S1Drain electrode be connected；The first switch tube S1Source electrode and second switch S2Source electrode be connected,
Constitute two-way switch；The second switch S2Drain electrode and the first input capacitance C1Cathode, the second input capacitance C2Just
Pole, boost inductance LbOne end be connected；The first input capacitance C1Anode with the first rectifier diode D1Cathode, third
Rectifier diode D3Cathode, the first booster diode D5Anode be connected；The second input capacitance C2Cathode and second whole
Flow diode D2Anode, the 4th rectifier diode D4Anode, the second booster diode D6Cathode be connected；The boosting electricity
Feel LbThe other end and third switching tube S3Source electrode, the 4th switching tube S4Drain electrode, the first output diode D7Anode,
Two LED load LED2Cathode be connected；The third switching tube S3Drain electrode and the first booster diode D5Cathode, first defeated
Capacitor C outb1Anode be connected；The 4th switching tube S4Source electrode and the second booster diode D6Anode, second output electricity
Hold Cb2Cathode be connected；The first output diode D7Cathode and the first LED load LED1Anode be connected；Described second
LED load LED2Anode and the second output diode D8Cathode be connected；The first LED load LED1Cathode and second
Output diode D8Anode, outputting inductance LrOne end be connected；The outputting inductance LrThe other end and the first output capacitance Cb1
Cathode, the second output capacitance Cb2Anode be connected.
The working principle of the multi-modal wide-range input voltage LED driver without electrolytic capacitors of the above-mentioned acyclic type of the present embodiment
Are as follows: as input voltage VinWhen in the range of 220-240Vrms, first switch tube S1With second switch S2It turns off, at this time institute
The LED driver of proposition works in half pressure input pattern, and equivalent circuit is as shown in Figure 2 a.In half pressure input pattern, height input electricity
Pressure is by the first input capacitance C1With the second input capacitance C2Respectively, low busbar voltage is realized.Furthermore boost inductance LrIt works in and faces
Boundary's conduction mode, to realize high power factor.As input voltage VinWhen in the range of 100-120Vrms, first switch tube
S1With second switch S2Conducting, LED driver work in total pressure input pattern.In total pressure input pattern, because of the first input
Capacitor C1With the second input capacitance C2Voltage be non-negative, third rectifier diode D3With the 4th rectifier diode D4Shutdown, etc.
It is as shown in Figure 2 b to imitate circuit.In the positive half period of input voltage, the first input capacitance C1Voltage be equal to input voltage, second
Input capacitance C2Voltage remain zero；In the negative half-cycle of input voltage, the second input capacitance C2Voltage be equal to input electricity
Pressure, the first input capacitance C1Voltage remain zero.Total pressure input pattern reduces the loss of diode and switching device, improves
System effectiveness.Furthermore boost inductance LrDiscontinuous conduction mode is worked in, to ensure high power factor.
In conclusion the multi-modal wide-range input voltage LED driver without electrolytic capacitors of acyclic type of the invention, realize
Optimize busbar voltage, effectively reduces the voltage stress of bus capacitor and switching device in the case of high input voltage, and reduce
Loss of the system in low input, improves system effectiveness.In addition, LED driver of the invention realizes nothing
Electrolytic capacitor effectively increases lifetime of system and reliability.
The examples of implementation of the above are only the preferred embodiments of the invention, and implementation model of the invention is not limited with this
It encloses, therefore all shapes according to the present invention, changes made by principle, should all be included within the scope of protection of the present invention.
Claims (2)
1. the multi-modal wide-range input voltage LED driver without electrolytic capacitors of acyclic type, it is characterised in that: the LED driver
Including AC power source, filter inductance, filter capacitor, the first rectifier diode, the second rectifier diode, third rectifier diode,
4th rectifier diode, first switch tube, second switch, the first input capacitance, the second input capacitance, the first two poles of boosting
Pipe, the second booster diode, boost inductance, third switching tube, the 4th switching tube, the first output diode, the second two poles of output
Pipe, the first LED load, the second LED load, outputting inductance, the first output capacitance, the second output capacitance；The AC power source
One end is connected with one end of the anode of the first rectification diode, the second rectification cathode of diode, filter capacitor, the other end and
One end of filter inductance is connected；The other end of the filter inductance and anode, the 4th rectifier diode of third rectifier diode
The drain electrode of cathode, the other end of filter capacitor, first switch tube be connected；The source electrode and second switch of the first switch tube
Source electrode be connected, constitute two-way switch；The drain electrode of the second switch and cathode, the second input capacitance of the first input capacitance
Anode, boost inductance one end be connected；The anode of first input capacitance is whole with the cathode of the first rectifier diode, third
The anode of the cathode, the first booster diode that flow diode is connected；The cathode of second input capacitance and the second two poles of rectification
The anode of pipe, the anode of the 4th rectifier diode, the cathode of the second booster diode are connected；The other end of the boost inductance with
The source electrode of third switching tube, the drain electrode of the 4th switching tube, the anode of the first output diode, the cathode of the second LED load are connected；
The drain electrode of the third switching tube is connected with the anode of the cathode of the first booster diode, the first output capacitance；Described 4th opens
The source electrode for closing pipe is connected with the cathode of the anode of the second booster diode, the second output capacitance；First output diode
Cathode is connected with the anode of the first LED load；The anode of second LED load is connected with the cathode of the second output diode；
The cathode of first LED load is connected with one end of the anode of the second output diode, outputting inductance；The outputting inductance
The other end is connected with the anode of the cathode of the first output capacitance, the second output capacitance.
2. the multi-modal wide-range input voltage LED driver without electrolytic capacitors of acyclic type according to claim 1, feature
Be: the LED driver leads through and off in different input voltages, through first switch tube and second switch
It opens, works in different mode to obtain high efficiency and low busbar voltage；When input voltage is in the range of 220-240Vrms
When, first switch tube and second switch shutdown, the LED driver work in half pressure input pattern, to obtain low bus electricity
Pressure, reduces the switch stress of device, and half presses the high input voltage in input pattern by the first input capacitance and the second input capacitance
Respectively, and boost inductance works in critical conduction mode；When input voltage is in the range of 100-120Vrms, first is opened
Pipe and second switch conducting are closed, which works in total pressure input pattern, reduces diode current flow loss, improves
System effectiveness, in total pressure input pattern because the voltage of the first input capacitance and the second input capacitance be it is non-negative, third is whole
Diode and the shutdown of the 4th rectifier diode are flowed, in the positive half period of input voltage, the voltage of the first input capacitance is equal to defeated
Entering voltage, the voltage of the second input capacitance remains zero, in the negative half-cycle of input voltage, the voltage etc. of the second input capacitance
Zero is remained in the voltage of input voltage, the first input capacitance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910170219.9A CN109905941B (en) | 2019-03-07 | 2019-03-07 | Unipolar multi-mode wide-range input voltage LED driver without electrolytic capacitor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910170219.9A CN109905941B (en) | 2019-03-07 | 2019-03-07 | Unipolar multi-mode wide-range input voltage LED driver without electrolytic capacitor |
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| Publication Number | Publication Date |
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| CN109905941A true CN109905941A (en) | 2019-06-18 |
| CN109905941B CN109905941B (en) | 2023-11-28 |
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| CN201910170219.9A Active CN109905941B (en) | 2019-03-07 | 2019-03-07 | Unipolar multi-mode wide-range input voltage LED driver without electrolytic capacitor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116800240A (en) * | 2022-04-27 | 2023-09-22 | 深圳市芯宇昊科技有限公司 | Power line carrier driving circuit and driving method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013063770A1 (en) * | 2011-11-02 | 2013-05-10 | 深圳市讯宇创科技有限公司 | Switched dimming led drive circuit and led light group |
| US20140285102A1 (en) * | 2013-03-19 | 2014-09-25 | Praveen K. Jain | High power factor, electrolytic capacitor-less driver circuit for light-emitting diode lamps |
| CN104768291A (en) * | 2015-03-26 | 2015-07-08 | 上海大学 | Improved Cuk LED drive power source without electrolytic capacitor |
| CN108990212A (en) * | 2018-07-26 | 2018-12-11 | 江苏大学 | Based on BOOST- reversed polarity BUCK Converter Interleaving Parallel no electrolytic capacitor LED drive power and switching method |
-
2019
- 2019-03-07 CN CN201910170219.9A patent/CN109905941B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013063770A1 (en) * | 2011-11-02 | 2013-05-10 | 深圳市讯宇创科技有限公司 | Switched dimming led drive circuit and led light group |
| US20140285102A1 (en) * | 2013-03-19 | 2014-09-25 | Praveen K. Jain | High power factor, electrolytic capacitor-less driver circuit for light-emitting diode lamps |
| CN104768291A (en) * | 2015-03-26 | 2015-07-08 | 上海大学 | Improved Cuk LED drive power source without electrolytic capacitor |
| CN108990212A (en) * | 2018-07-26 | 2018-12-11 | 江苏大学 | Based on BOOST- reversed polarity BUCK Converter Interleaving Parallel no electrolytic capacitor LED drive power and switching method |
Non-Patent Citations (1)
| Title |
|---|
| 汪飞等: "AC-DC LED 驱动电源消除电解电容技术综述", 电工技术学报, vol. 30, no. 8, pages 176 - 185 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116800240A (en) * | 2022-04-27 | 2023-09-22 | 深圳市芯宇昊科技有限公司 | Power line carrier driving circuit and driving method thereof |
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| CN109905941B (en) | 2023-11-28 |
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