CN207219123U - A kind of light-operated boosting LED function circuit of solar energy - Google Patents
A kind of light-operated boosting LED function circuit of solar energy Download PDFInfo
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- CN207219123U CN207219123U CN201721254435.4U CN201721254435U CN207219123U CN 207219123 U CN207219123 U CN 207219123U CN 201721254435 U CN201721254435 U CN 201721254435U CN 207219123 U CN207219123 U CN 207219123U
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- 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
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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Abstract
The utility model proposes a kind of light-operated boosting LED function circuit of solar energy, it is additionally arranged in existing booster circuit including solar charging electric control circuit, battery low-electricity quantity breaking circuit, low voltage protection circuit, OSC circuits and functional circuit；Introduce that solar energy is light-operated and LED function circuit in existing booster circuit.Solar recharging management is realized by solar charging electric control circuit, LED function control is realized by OSC circuits and battery low-electricity quantity breaking circuit, low voltage protection circuit and functional circuit, so as to greatly reduce peripheral applications cost.LED flicker problems when the utility model efficiently avoid battery electric quantity deficiency, and provide the solution method of light-operated boosting rectifier control LED function.
Description
Technical field
The utility model belongs to lighting circuit technical field, is related to a kind of light-operated boosting LED function circuit of solar energy.
Background technology
In the case where currently advocating the overall situation of green living, the outdoor illumination applications such as park, square, outdoor advertising lamp start general
All over using the solar energy supplement energy and control mode, current sustainable energy can not only be made full use of, while also greatly save
The consumption of traditional energy, the discharge for reducing pollution.Due to usually needing power supply big when LED string works in actual applications
In the conducting voltage of LED, this requires to provide boost function when using solar cell for supplying power.
In the market mainly includes extensively using the LED controller circuit form with boost function：Constant-current control circuit, perseverance
Press control circuit, PWM (pulsewidth modulation) control circuit etc..Constant-current control circuit is answered with constant-voltage control circuit Chang Yinwei internal structures
Miscellaneous, peripheral pin is more and needs some other components in solar recharging and control to be used cooperatively, such nothing
Cost is added in shape, therefore both circuit working methods are commonly applied to the LED controls of early stage, it is in solar energy circuit application
In the market is fewer and fewer.
Some clients usually have other demands during practical application, for example some customer requirements connect LED, play merely
The effect of illumination；The different LED effects of some customer requirements, for example, get brighter gradually dark, horse race lamp, single dodge to the function such as dodging.Therefore
Not only to meet load request for designer, also provide some selectable LED effects.
When using battery booster control LED, with the use of battery, its electricity is fewer and fewer, and LED is increasingly
Secretly.After battery electric quantity drops to certain value, LED shut-off, but with output LED shut-off battery because over-discharge is carried out
Readjustment, now LED is started working again.This will result in after battery electric quantity is relatively low, and LED does not stop to flash.
The light-operated boosting LED function circuit of traditional solar energy, often through a boost chip, function control chip, too
Positive energy charge control and LED drive controls circuit are formed, and this allows for client and pcb board face is added in actual application
The quantity of long-pending and peripheral pipe, greatly add the cost of actual use.
Utility model content
Main purpose of the present utility model is that providing one kind can effectively avoid working as battery electric quantity deficiency LED color break-up
The light-operated boosting LED function circuit of solar energy bright, that union boosting, light-operated and function control are integrated, solution have identical function
Circuit needed for substantial amounts of peripheral circuit, reduce application cost, while also avoid interference caused by peripheral circuit complexity etc.
Problem.
In order to achieve the above object, solution of the present utility model is：
A kind of light-operated boosting LED function circuit of solar energy, including chip internal circuits and peripheral circuit；Chip internal circuits
Including booster circuit, solar charging electric control circuit, battery low-electricity quantity breaking circuit, low voltage protection circuit, OSC circuits and work(
Energy circuit, the external signal end of chip internal circuits include LX, BAT, SOL, Key, vdd, gnd, L2, L1；Peripheral circuit includes electricity
Feel L, switch key K, solar panels solar, input capacitance Cin, output capacitance Cout, load RL and output LED, inductance L companies
It is connected between signal end LX and BAT, switch key K is connected between signal end Key and ground, and solar panels solar is connected to letter
Number end SOL and ground between, input capacitance Cin is connected between signal end BAT and ground, output capacitance Cout, load RL be connected to
Between signal end vdd and ground, output LED is connected between signal end L2 and L1；Signal LX, control signal CTL and enable signal
The boosted circuits of EN1, which produce output and internal supply voltage vdd, signal BAT and SOL and produced through solar charging electric control circuit, to be made
Energy signal EN1, battery low-electricity quantity breaking circuit detection BAT voltages produce control signal CTL, and enable signal EN1 protects through low-voltage
Protection circuit, which produces enable signal EN2, OSC circuit and enable signal EN1 and EN2 control function circuit, functional circuit, makes signal L1
And L2 output function effects.
The switch key K is touch-switch, once switches a subfunction per button.
The battery low-electricity quantity breaking circuit includes resistance R4, R5, R6 and NMOS tube MN3, a resistance R5 termination battery
Power supply signal end BAT, another terminating resistor R6 one end and NMOS tube MN3 grid, resistance R6 other end ground connection, NMOS tube
MN3 source ground, drain electrode and resistance R4 an end are connected to output signal CTL, resistance R4 another termination chip internal power supply
Signal end vdd.
The low voltage protection circuit includes resistance R11, R12, R13, NMOS tube MN4 and PMOS MP4, PMOS MP4
Source electrode meet chip internal power supply signal end vdd, grid meets enable signal EN1, and drain electrode connects with resistance R11 one end, resistance
The R11 other end is connected on NMOS tube MN4 grid with a resistance R12 end, and the resistance R12 other end is grounded, NMOS tube MN4's
Source ground, drain electrode and a resistance R13 enabled EN2 of termination output, resistance R13 another termination chip internal power supply signal end
vdd。
The chip pin LX of the booster circuit connects NMOS tube MN1 and PMOS MP1 drain electrode, NMOS tube MN1 source electrode
Ground connection, grid connect one end of drive module, and PMOS MP1 grid connects one end of drive module, another termination of drive module
One end of PFM control modules, the another both ends of PFM control modules connect the output end of enable signal EN1 and comparator, comparator respectively
Positive input terminal connecting resistance R2, R3 and NMOS tube MN2 source electrode, negative input terminate reference offset module output end Vref, electricity
R3 other end ground connection is hindered, the drain terminal of the resistance R2 other end respectively with resistance R1 and NMOS tube MN2 is connected, NMOS tube MN2's
Grid connects CTL signals, and the resistance R1 other end is connected to output vdd pins with PMOS MP1 source electrode.
The PFM control modules also include PWM control modules.
The chip internal circuits are integrated in a chips.
The output LED is monochromatic LED lamp string or the LED string being made up of multiple color LED.
Due to being using such scheme, the beneficial effects of the utility model：The light-operated boosting LED work(of the utility model solar energy
Energy circuit provides a kind of scheme that can effectively solve the problem that solar recharging, boosting and LED function effect lamp.The circuit can be used
In wider operating voltage range, when supply voltage is higher than the minimum operating voltage of inner setting, output voltage can be ensured
Do not influenceed by supply voltage, remained unchanged all the time.Which provides a kind of pattern of constant pressure output, while in solar recharging
Original LED state pattern can be kept to shut-off LED and at the end of charging.Chip employs low power dissipation design simultaneously, is charging
Or the service life that battery is ensure that under LED state is not connect, so as to greatly save the energy, while also solve and closed in battery
The problem of LED flashes during disconnected opening process.
Brief description of the drawings
In order to illustrate more clearly of the technical scheme in the embodiment of the utility model, will make below to required in embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the utility model,
For those of ordinary skill in the art, on the premise of not paying creative work, can also be obtained according to these accompanying drawings
Other accompanying drawings.
Fig. 1 is boost circuit structure schematic diagram in the utility model.
Fig. 2 is battery low-electricity quantity protection circuit structural representation in the utility model.
Fig. 3 is the structural representation of the light-operated control booster circuit of solar energy in the utility model.
Fig. 4 is the structural representation of solar charging circuit in the utility model.
Fig. 5 is the structural representation of the utility model mesolow protection circuit.
Fig. 6 is the structural representation of LED function circuit in the utility model.
Fig. 7 is the block schematic illustration of integrated circuit in the utility model.
Fig. 8 is the structural representation of integrated circuit in the utility model.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belong to the scope of the utility model protection.
As shown in figure 1, being boost circuit structure schematic diagram in the utility model, the synchronous liter of PFM control modes is employed
Volt circuit.Dotted line frame as shown in Figure 1 is common synchronous voltage booster circuit, and regulation output voltage is added in this booster circuit
The MN2 and enable signal EN1 of control boosting.When enable signal EN1 is logic low, now by control PFM control and
Driver remains that MP1 grids are low level, and now MP1 is turned on, and vdd voltages change with LX level changes, do not reached
The effect of boosting；When enable signal EN1 is logically high, now PFM control output signals are not influenceed by EN1, so as to too
The positive light-operated enable signal of energy passes through signal EN1 logic low and the stopping and beginning of logically high controllable boosting.And MN2 effect
It is then the MN2 conductings when it is high that low pressure, which turns off enabled CTL, now vdd voltages reduce.
Vdd voltages are when MN2 is not turned on：
Vdd voltages are after MN2 conductings：
As shown in Fig. 2 battery low-electricity quantity breaking circuit includes resistance R4, R5, R6 and NMOS tube MN3, resistance R5 one end
Connect battery powered BAT, another terminating resistor R6 and MN3 grid, resistance R6 other end ground connection, MN3 source ground drain electrode
Output signal CTL, a resistance R4 termination chip internal power supply vdd are connected to a resistance R4 end.As battery was being applied
Electricity, which gradually decreases, in journey works asAfter voltage NMOS tube MN3 cut-in voltage, MN3 is turned off, now CTL level
For height, the MN2 of booster circuit part is opened, so that output voltage vdd is reduced, and then low-voltage protection circuit work can be made
Make, so as to turn off LED.
Solar charging electric control circuit is made up of Fig. 3 and Fig. 4.
As shown in figure 3, work as by force as illumination becomesWhen EN1 for height, now into the sun
Energy charge mode, booster circuit shut-off；Work as illumination dies downWhen EN1 to be low, now terminate too
Positive energy charge mode, booster circuit work on.A charging sluggishness is done by NMOS tube MN0 in the circuit, so as to prevent
Solar recharging and the critical condition run into during electric discharge.
As shown in figure 4, work asWhen, PMOS MP2 grid voltages is low, now SOL pins pair
BAT is charged；WhenWhen, PMOS MP2 grid voltages are height, and now charging terminates.
As shown in figure 5, low-voltage protection circuit includes resistance R11, R12, R13, NMOS tube MN4 and PMOS MP4, MP4's
Source electrode meets in-line power vdd, and grid meets enable signal EN1, and drain electrode connects with R11 one end, the resistance R11 other end and R12's
One end is connected on MN4 grid, R12 other end ground connection, MN4 source ground, drain electrode and a R13 enabled EN2 of termination output,
R13 another termination in-line power vdd.In the normal mode of operation, EN1 is low, now PMOS MP4 normallies, whenDuring more than NMOS tube MN4, now MN4 is turned on, and enable signal EN2 is now exported to be low, to function below
Circuit does not influence；WhenDuring less than NMOS tube MN4, now MN4 is turned off, and output enable signal EN2 is uprised,
So as to turn off functional circuit below so as to switching off load LED.This function provide when in-line power i.e. booster voltage with
When load becomes big voltage step-down, LED function circuit is turned off so as to provide a kind of protection mechanism.
As shown in fig. 6, the utility model provides eight kinds of LED functions, pull-up resistor is provided with inside button Key, so as to protect
Card Key keys in normal work are height.After touch key presses down, inside provides trailing edge triggering, and then handoff functionality.
OSC circuits provide fixed frequency of oscillation, can control the rectilinear oscillation frequency of whole LED function.Functional circuit provides
Reset controls, and LED is automatic bright after inner setting circuit normal work and is operated in the first function.When not enough power supply or defeated
When going out input voltage vdd not enough power supplies, battery low-electricity quantity protection circuit and the low-voltage protection circuit work of inner setting, and then control
Function processed and booster circuit are protected, so as to provide protection mechanism.
As shown in fig. 7, a kind of overall work block diagram of the light-operated boosting LED function circuit of solar energy, is this reality as shown in Figure 8
With new overall structure figure.
Operation principle：When battery powered BAT voltages gradually rise, it gradually rises LX voltages by inductance L, vdd
Voltage height therewith, whenWhen, now PMOS MP1 is turned on, and vdd voltages increase, against vdd
Voltage raises, whenNow MP1 is turned off, MN1 conductings.When MN1 is turned on, BAT fills to input capacitance Cin
Electricity, and Cin discharges and output capacitance Cout is charged when MN1 shut-off MP1 conductings, when MP1 turns off MN1 conductings again,
Cout discharges so as to maintain vdd voltages.After circuit normal work, when illumination gradually becomes strong, SOL voltages gradually rise, and work as satisfaction
After condition mentioned above, start to carry out solar recharging to battery, now booster circuit is stopped, and LED also stops
Work, until illumination deficiency continues to be battery powered, now LED works on.The protection of other battery low-electricity quantities, low-voltage variation
And the function such as electrification reset controls the work of whole circuit in the case of its is peculiar.
The above-mentioned description to embodiment is understood that for ease of those skilled in the art and using originally special
Profit.Person skilled in the art obviously easily can make various modifications to these embodiments, and described herein
General Principle is applied in other embodiment without by performing creative labour.Therefore, the utility model is not limited to here
Embodiment, those skilled in the art according to announcement of the present utility model, do not depart from improvement that the utility model category made and
Modification all should be within the scope of protection of the utility model.
Claims (8)
1. a kind of light-operated boosting LED function circuit of solar energy, including chip internal circuits and peripheral circuit；
Chip internal circuits include booster circuit, solar charging electric control circuit, battery low-electricity quantity breaking circuit, under-voltage protection
Circuit, OSC circuits and functional circuit, the external signal end of chip internal circuits include LX, BAT, SOL, Key, vdd, gnd, L2,
L1；
Peripheral circuit includes inductance L, switch key K, solar panels solar, input capacitance Cin, output capacitance Cout, load RL
And LED is exported, inductance L is connected between signal end LX and BAT, and switch key K is connected between signal end Key and ground, the sun
Energy plate solar is connected between signal end SOL and ground, and input capacitance Cin is connected between signal end BAT and ground, output capacitance
Cout, load RL are connected between signal end vdd and ground, and output LED is connected between signal end L2 and L1；
Signal LX, control signal CTL and the boosted circuits of enable signal EN1 produce output and internal supply voltage vdd, signal
BAT and SOL produces enable signal EN1 through solar charging electric control circuit, and battery low-electricity quantity breaking circuit detection BAT voltages produce
Control signal CTL, enable signal EN1 through low voltage protection circuit produce enable signal EN2, OSC circuit and enable signal EN1 and
EN2 control function circuits, functional circuit make signal L1 and L2 output function effect.
2. the light-operated boosting LED function circuit of solar energy according to claim 1, it is characterised in that：The switch key K is
Touch-switch, once switch a subfunction per button.
3. the light-operated boosting LED function circuit of solar energy according to claim 1, it is characterised in that：The battery low-electricity quantity
Breaking circuit includes resistance R4, R5, R6 and NMOS tube MN3, a resistance R5 termination battery powered signal end BAT, another termination
Resistance R6 one end and NMOS tube MN3 grid, resistance R6 other end ground connection, NMOS tube MN3 source ground, drain electrode and electricity
A resistance R4 end is connected to output signal CTL, resistance R4 another termination chip internal power supply signal end vdd.
4. the light-operated boosting LED function circuit of solar energy according to claim 1, it is characterised in that：The under-voltage protection
Circuit includes resistance R11, R12, R13, NMOS tube MN4 and PMOS MP4, and PMOS MP4 source electrode connects chip internal power supply letter
Number end vdd, grid meet enable signal EN1, and drain electrode connects with resistance R11 one end, the resistance R11 other end and resistance R12's
One end is connected on NMOS tube MN4 grid, resistance R12 other end ground connection, NMOS tube MN4 source ground, drain electrode and resistance R13
Termination output enabled an EN2, resistance R13 another termination chip internal power supply signal end vdd.
5. the light-operated boosting LED function circuit of solar energy according to claim 1, it is characterised in that：The booster circuit
Chip pin LX connects NMOS tube MN1 and PMOS MP1 drain electrode, NMOS tube MN1 source ground, and grid meets the one of drive module
End, PMOS MP1 grid connect one end of drive module, one end of another termination PFM control modules of drive module, PFM controls
The another both ends of molding block connect the output end of enable signal EN1 and comparator respectively, positive input terminal connecting resistance R2, R3 of comparator and
NMOS tube MN2 source electrode, negative input terminate the output end Vref of reference offset module, resistance R3 other end ground connection, resistance R2
Drain terminal of the other end respectively with resistance R1 and NMOS tube MN2 be connected, NMOS tube MN2 grid connects CTL signals, and resistance R1's is another
One end and PMOS MP1 source electrode are connected to output vdd pins.
6. the light-operated boosting LED function circuit of solar energy according to claim 5, it is characterised in that：The PFM control modules
Also include PWM control modules.
7. the light-operated boosting LED function circuit of solar energy according to claim 1, it is characterised in that：The chip internal electricity
Road is integrated in a chips.
8. the light-operated boosting LED function circuit of solar energy according to claim 1, it is characterised in that：The output LED is single
Color LED string or the LED string being made up of multiple color LED.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721254435.4U CN207219123U (en) | 2017-09-27 | 2017-09-27 | A kind of light-operated boosting LED function circuit of solar energy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721254435.4U CN207219123U (en) | 2017-09-27 | 2017-09-27 | A kind of light-operated boosting LED function circuit of solar energy |
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| Publication Number | Publication Date |
|---|---|
| CN207219123U true CN207219123U (en) | 2018-04-10 |
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|---|---|---|---|
| CN201721254435.4U Active CN207219123U (en) | 2017-09-27 | 2017-09-27 | A kind of light-operated boosting LED function circuit of solar energy |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110446301A (en) * | 2019-08-09 | 2019-11-12 | 上海裕芯电子科技有限公司 | A kind of light-operated boosting LED function circuit of solar energy |
| CN111884323A (en) * | 2020-07-31 | 2020-11-03 | 上海裕芯电子科技有限公司 | Low-power consumption solar light-operated boost circuit |
| CN112271792A (en) * | 2020-11-10 | 2021-01-26 | 上海裕芯电子科技有限公司 | Solar control circuit with low standby power consumption |
-
2017
- 2017-09-27 CN CN201721254435.4U patent/CN207219123U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110446301A (en) * | 2019-08-09 | 2019-11-12 | 上海裕芯电子科技有限公司 | A kind of light-operated boosting LED function circuit of solar energy |
| CN110446301B (en) * | 2019-08-09 | 2024-05-07 | 上海裕芯电子科技有限公司 | Solar light-operated boost LED functional circuit |
| CN111884323A (en) * | 2020-07-31 | 2020-11-03 | 上海裕芯电子科技有限公司 | Low-power consumption solar light-operated boost circuit |
| CN112271792A (en) * | 2020-11-10 | 2021-01-26 | 上海裕芯电子科技有限公司 | Solar control circuit with low standby power consumption |
| CN112271792B (en) * | 2020-11-10 | 2024-06-07 | 上海裕芯电子科技有限公司 | Solar control circuit with low standby power consumption |
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