CN206948653U

CN206948653U - Illuminating circuit and its controller of application

Info

Publication number: CN206948653U
Application number: CN201621125492.8U
Authority: CN
Inventors: 赵俊杰
Original assignee: Shanghai Semiconducto Ltd By Share Ltd
Current assignee: Shanghai Semiconducto Ltd By Share Ltd; Shanghai Bright Power Semiconductor Co Ltd
Priority date: 2016-10-14
Filing date: 2016-10-14
Publication date: 2018-01-30
Anticipated expiration: 2026-10-14

Abstract

The utility model provides a kind of illuminating circuit and its controller of application, wherein, controller is used to dim light emitting module, the light emitting module includes at least one luminescence unit, the controller includes reference voltage adjustment module, the external reference voltage of reference voltage adjustment module and switching signal, to according to the switching signal, the reference voltage is adjusted accordingly, and generates regulation reference voltage to export.I.e. the utility model reference voltage can be adjusted according to different switching signals, and then adjust the luminous situation of luminescence unit, lifts the intelligent of product and improves Consumer's Experience.

Description

Illuminating circuit and its controller of application

Technical field

Light modulation field is the utility model is related to, more particularly to a kind of illuminating circuit and its controller of application.

Background technology

Typical case's reference of existing switch toning is the switch of the paths of LEDs of output control 2, and electric current is constant, generally comprises three Kind illuminating state：When for the first time by compressing switch, open first via white light, second by compressing switch when, it is yellow to open the second tunnel Light, for the third time by compressing switch when, two paths of LED is opened simultaneously, colour mixture white light, gold-tinted.Gold-tinted can compare white light under same current status Slightly dark, so two paths of LED is opened simultaneously when, if simply simply opening two paths of LED, human eye compares white light when can substantially realize colour mixture Or gold-tinted is bright a lot, if client just hopes that simple colour temperature under exchanging will be far from suitable.

Utility model content

In view of the above the shortcomings that prior art, the purpose of this utility model is to provide a kind of illuminating circuit and its answered Controller, in the prior art can not be when multichannel luminescence unit be opened simultaneously, to the luminance of luminescence unit for solution Degree carries out the problem of adaptability regulation.

In order to achieve the above objects and other related objects, the utility model provides a kind of controller for illuminating circuit, For being dimmed to light emitting module, the light emitting module includes at least one luminescence unit, and the controller includes：With reference to electricity Adjustment module, an external reference voltage and switching signal are pressed, according to the switching signal, phase is carried out to the reference voltage The regulation answered, and regulation reference voltage is generated to export.

In the specific embodiment of the utility model one, the controller may further include：Reference voltage generation module, To generate the reference voltage.

In the specific embodiment of the utility model one, the controller may further include：Mode detection module, it is used for According to the mode control signal received, generation and at least one luminescence unit respectively corresponding switching signal to export.

In the specific embodiment of the utility model one, the controller may further include：Electric current drive module, with institute State light emitting module, reference voltage adjustment module and the mode detection module electrical connection, to according to the switching signal with And the regulation reference voltage is respectively to driving current corresponding to the corresponding luminescence unit output.

In the specific embodiment of the utility model one, the switching signal opens letter including what luminescence unit corresponding to order was lighted Number and order corresponding to the OFF signal that extinguishes of luminescence unit, and when all switching signals are ON signal or the switch When in the presence of two being at least while ON signal in signal, the reference voltage adjustment module is according to the voltage-regulation pattern of selection The reference voltage is adjusted.

In the specific embodiment of the utility model one, the luminescence unit is two, when all switching signals are When in the presence of two being at least while ON signal during ON signal or in the switching signal, the reference voltage adjustment module according to The voltage-regulation pattern of selection carries out corresponding proportion to the reference voltage and zoomed in or out, to generate the regulation with reference to electricity Pressure.

In the specific embodiment of the utility model one, when in the presence of two being at least while ON signal in the switching signal When, the reference voltage adjustment module is according to the number selection for the switching signal in the switching signal being simultaneously ON signal Voltage-regulation pattern.

In the specific embodiment of the utility model one, the mode control signal is a mode control module according to reception Control instruction and generate；And the mode control module is according to the multiple control instructions received successively, and respectively with pre- If the mode control signal that is matched with current control instruction of sequential loop output.

In the specific embodiment of the utility model one, the pattern control of an acquiescence is pre-set in the mode control module Signal processed, and it is default more than one with the last time phase difference for receiving control instruction currently to receive time of the control instruction During time threshold, the mode control module is made to export the mode control signal of the acquiescence.

In the specific embodiment of the utility model one, the reference voltage adjustment module includes decoding gating unit and institute The voltage for stating decoding gating unit electrical connection chooses unit, the voltage regulation unit electrically connected with the decoding gating unit, institute State voltage regulation unit to be used to receive the input of the reference voltage, and the reference voltage is adjusted to big with multiple voltage Small voltage output, the decoding gating unit receive the input of the switching signal, and according to the switching signal and institute The selection signal that voltage chooses unit is stated, selects one kind in the multiple voltage output to be carried out as the regulation reference voltage Output.

In the specific embodiment of the utility model one, the voltage, which chooses unit, includes at least one resistance, current source, institute One end ground connection of resistance, the other end connection constant-current source of the resistance are stated, the voltage chooses unit by the resistance both ends Voltage chooses signal to the decoding gating unit compared with least one threshold voltage with output, and the resistance is adjustable Resistance.

In the specific embodiment of the utility model one, the adjustable resistance is built-in or is external in the controller.

In the specific embodiment of the utility model one, the decoding gating unit includes decoding gate.

In the specific embodiment of the utility model one, the voltage regulation unit includes operational amplifier (UA5), field-effect Triode (N1), resistance string, the resistance string include at least two resistance, and the resistant series in the resistance string, the electricity One end ground connection of resistance string, the source electrode and the decoding gating of the other end connection fet of the resistance string are single Member, and each resistance in the resistance string electrically connects the decoding gating unit, the positive pole of the operational amplifier (UA5) is defeated Enter the input that end receives the reference voltage, output end and the fet (N1) of the operational amplifier (UA5) Grid electrical connection, the fet (N1) drain electrode connection power supply, the source electrode of the fet (N1) is also With the negative input of the operational amplifier (UA5) it is electric and it is described decoding gating unit be connected.

It should be noted that in specific implementation process, the resistance of each resistance in resistance string can be with identical With difference.

In the specific embodiment of the utility model one, the voltage, which chooses unit, includes first voltage comparator (UA1), the Two voltage comparators (UA2), tertiary voltage comparator (UA3), resistance (R1), resistance (R2) and constant-current source (DC), the electricity The first end ground connection of (R1) is hindered, the second end of the resistance (R1) electrically connects the constant-current source (DC) and first voltage ratio Compared with device (UA1) electrode input end, the voltage of the negative input of the first voltage comparator is first threshold, described second The electrode input end of comparator electrically connects with the second end of the resistance (R1), the negative pole of the second voltage comparator (UA2) The voltage of input is Second Threshold, the first end ground connection of the resistance (R2), the second end electrical connection institute of the resistance (R2) The electrode input end of constant-current source (DC) and the tertiary voltage comparator (UA3) is stated, the tertiary voltage comparator (UA3) The voltage of negative input is the 3rd threshold value, the first comparator (UA1), second voltage comparator (UA2), tertiary voltage ratio Exported compared with device (UA3) and choose signal to the decoding gating unit.

In the specific embodiment of the utility model one, the resistance string includes resistance (RR1), resistance (RR2), resistance (RR3), resistance (RR4) and resistance (RR5), the electrode input end of the operational amplifier (UA5) receive the reference voltage Input, the output end of the operational amplifier (UA5) electrically connects with the grid of the fet (N1), the field effect Triode (N1) grounded drain is answered, the first end of the source electrode and the resistance (RR5) of the fet (N1) is electrically connected Connect and electrically connected with the negative input of the operational amplifier (UA5), the second end and the resistance of the resistance (RR5) (RR4) first end electrical connection, the second end of the resistance (RR4) electrically connect with the first end of the resistance (RR3), the electricity Second end of resistance (RR3) electrically connects with the first end of the resistance (RR2), the second end and the resistance of the resistance (RR2) (RR1) first end electrical connection, the second end ground connection of the resistance (RR1), the decoding gate (UA4) receive the switch The input of signal, and the output end of the decoding gate (UA4) and the first voltage comparator (UA1), second electricity Press comparator (UA2) output end, the output end of the tertiary voltage comparator (UA3), the first end of the resistance (RR5), The first end of the resistance (RR4), the first end of the resistance (RR3), the first end of the resistance (RR2) and the electricity Hinder the first end electrical connection of (RR1), and the switching signal, the first voltage of the decoding gate (UA4) to reception Comparator (UA1) output end output signal, the second voltage comparator (UA2) output end output signal and The signal of the output end output of the tertiary voltage comparator (UA3) is compiled, to select the first of the resistance (RR5) End, the first end of the first end of the resistance (RR4), the first end of the resistance (RR3), the resistance (RR2) and described The voltage of one of the first end of resistance (RR1) gives the electric current drive module as the regulation reference voltage output.

In order to achieve the above objects and other related objects, the utility model also provides a kind of illuminating circuit, including luminous mould Block, and the as above controller described in any one, the light emitting module include at least one luminescence unit, and the controller can be with It is integrated on chip.

As described above, the utility model proposes a kind of illuminating circuit and its controller of application, wherein, controller is used for pair Light emitting module is dimmed, and the light emitting module includes at least one luminescence unit, and the controller is adjusted including reference voltage Module, the external reference voltage of reference voltage adjustment module and switching signal, to according to the switching signal, to the reference Voltage is adjusted accordingly, and generates regulation reference voltage to export.I.e. the utility model can according to different switching signals, Reference voltage is adjusted, and then adjusts the luminous situation of luminescence unit, the intelligent of product is lifted and improves Consumer's Experience.

Brief description of the drawings

Fig. 1 is shown as the structural representation of controller of the prior art.

Fig. 2 is shown as the structural representation of controller of the present utility model in one embodiment.

Fig. 3 is shown as the structural representation of reference voltage adjustment module of the present utility model in one embodiment.

Fig. 4 is shown as the circuit theory signal of reference voltage adjustment module of the present utility model in one embodiment Figure.

Fig. 5 is shown as the circuit theory schematic diagram of mode detection module of the present utility model in one embodiment.

Fig. 6 is shown as signal condition schematic diagram in the specific embodiment of the utility model one.

Fig. 7 is shown as the circuit theory schematic diagram of electric current drive module of the present utility model in one embodiment.

Fig. 8 is shown as part signal waveform diagram in the specific embodiment of the utility model one.

Fig. 9 is shown as the circuit theory schematic diagram of illuminating circuit in the specific embodiment of the utility model one.

Embodiment

Illustrate embodiment of the present utility model below by way of specific instantiation, those skilled in the art can be by this theory Content disclosed by bright book understands other advantages and effect of the present utility model easily.The utility model can also be by addition Different embodiments are embodied or practiced, and the various details in this specification can also be based on different viewpoints with answering With, without departing from it is of the present utility model spirit under carry out various modifications or alterations.It should be noted that in situation about not conflicting Under, the feature in following examples and embodiment can be mutually combined.

It should be noted that the diagram provided in following examples only illustrate in a schematic way it is of the present utility model basic Conception, the component relevant with the utility model is only shown in illustrating then rather than according to component count during actual implement, shape And size is drawn, kenel, quantity and the ratio of each component can be a kind of random change during its actual implementation, and its assembly layout Kenel may also be increasingly complex.

Controller of the prior art is usually as shown in figure 1, the controller 1 includes the benchmark electricity for providing reference voltage Press generation module R1, the mode detection module R2 detected to light-emitting mode and electric current driving is carried out to light emitting module Electric current drive module R3, in the prior art, double switch signal is generated after mode detection module R2 detection light-emitting modes, and Electric current drive module R3 also drives to two luminescence units of external light emitting module respectively according to double switch signal respectively Dynamic, in concrete application, two-way luminescence unit can be respectively to send the luminescence unit of white light and send the luminescence unit of gold-tinted, In actual applications, user can select one in two luminescence units to light to reach desired point by model selection Bright effect, it can also select to light the two-way luminescence unit simultaneously, when lighting the two-way luminescence unit simultaneously, two-way is luminous single Member illumination effect be overlapped, human eye can substantially realize both light simultaneously when it is brighter than white light or gold-tinted a lot, brightness jump Become very big, be likely to result in the discomfort of human eye, and if user just hopes simple colour temperature under exchanging, can not also reach desired Result.

Referring to Fig. 2, it is shown as the module diagram of controller of the present utility model in one embodiment.The control Device 2 processed is used to dim light emitting module, and the light emitting module includes multiple luminescence units, and the luminescence unit is preferably LED is formed, and the controller 2 includes：

Reference voltage adjustment module U2, an external reference voltage and switching signal, to according to the switching signal, to institute State reference voltage to be adjusted accordingly, and generate regulation reference voltage to export；To according to the mode detection module U3 Output the switching signal, the reference voltage REF is adjusted accordingly, and generate adjust reference voltage REF_O with Output.

Further, the controller 2 also includes reference voltage generation module U1 and mode detection in the present embodiment Module U3, the reference voltage generation module U1 and mode detection module U3 are electrically connected with the reference voltage adjustment module U2 Connect, the reference voltage generation module U1 is generating reference voltage REF；The mode detection module U3 is used for basis and received Mode control signal, generation and the multiple luminescence unit respectively corresponding switching signal to export；I.e. described switching signal Number it is identical with the number of the luminescence unit, and, the off and on of the corresponding control of each switching signal luminescence unit all the way. And in the present embodiment, illustrated exemplified by with two-way luminescence unit.And Fig. 2 is referred to, the mode detection module U3 has The input port DET of reception pattern control signal, and exported by port G1 and G2 to deserved switching signal.

Further, in the present embodiment, the controller 2 also includes electric current drive module U4, with the light emitting module (not shown in Fig. 2), reference voltage adjustment module U2 and mode detection module U3 electrical connections, to according to the mould The switching signal of formula detection module U3 outputs and the regulation of reference voltage adjustment module U2 outputs are with reference to electricity Pressure is respectively to driving current corresponding to the corresponding luminescence unit output.In the present embodiment, the electric current drive module U4 By driving current output port IO1 and IO2 to corresponding luminescence unit output driving current.

In the present embodiment, the switching signal is included corresponding to the ON signal lighted of luminescence unit corresponding to order and order The OFF signal that luminescence unit extinguishes, and when all switching signals are ON signal or in the switching signal at least while When in the presence of two being ON signal, the reference voltage adjustment module U2 is according to the voltage-regulation pattern of selection to described with reference to electricity Pressure is adjusted.In concrete application, the reference voltage adjustment module U2 is according to the voltage-regulation pattern of selection to the ginseng Examine voltage and carry out zooming in or out for corresponding proportion, to generate the regulation reference voltage REF_O.The selectable voltage is adjusted Section pattern, it is, for example, according to the regulation to adjustable resistance, selects to carry out reference voltage REF the scaling of different proportion,

In the utility model another specific embodiment, when being at least while out letter in the presence of two in the switching signal Number when, the reference voltage adjustment module according in the switching signal simultaneously for ON signal switching signal number selection institute State voltage-regulation pattern.For example, when the switching signal is 5, and two simultaneously when be ON signal, selects the regulation ginseng 0.75 times that voltage REF_O is adjusted to reference voltage REF is examined, when when three while being ON signal, selects to refer to the regulation Voltage REF_O is adjusted to 0.55 times of reference voltage REF.

In the specific embodiment of the utility model one, the mode control signal is a mode control module according to reception Control instruction and generate；And the mode control module is according to the multiple control instructions received successively, and respectively with pre- If the mode control signal that is matched with current control instruction of sequential loop output.Such as when the luminescence unit is two-way, and Luminescence unit emits white light all the way, all the way luminescence unit Yellow light-emitting low temperature, according to the control instruction received successively, and lights white light pair respectively Luminescence unit corresponding to the luminescence unit answered, gold-tinted and light simultaneously corresponding to luminescence unit corresponding to white light and gold-tinted Luminescence unit.

In the specific embodiment of the utility model one, the pattern control of an acquiescence is pre-set in the mode control module Signal processed, and it is default more than one with the last time phase difference for receiving control instruction currently to receive time of the control instruction During time threshold, the mode control module is made to export the mode control signal of the acquiescence.As shown in Fig. 2 switching signal with Mode detection module U3 port G1 and G2 state is corresponding, and in the present embodiment, and the preset time threshold is 10s, institute The switching signal of the corresponding acquiescence of mode control signal of acquiescence is stated, and under this default conditions, G1 on, G2 off, after shutdown Opening again and when interval time is no more than 10s, switch the state of G1 and G2 corresponding to second of mode control signal, i.e. G1 is off, G2 is on, when being opened again after shutdown and interval time is no more than 10s, switches G1 and G2 corresponding to the third mode control signal State, i.e. G1 are on, G2 on, and in the case of opening again after shut down, judge with it is last perform pass, the action started shooting phase When the time 10s is more than, the mode control signal of acquiescence is exported, that is, it is on to return to G1, and G2 is off state.

With reference to Fig. 3, the reference voltage adjustment module U2 includes decoding gating unit U21 and the decoding gating unit The voltage of U21 electrical connections chooses unit U22, is electrically connected with the decoding gating unit U21 voltage regulation unit U23, it is described Voltage regulation unit U23 is used for the input for receiving the reference voltage REF, and the reference voltage REF is adjusted to more The voltage output of kind voltage swing, the decoding gating unit U21 receive the input of the switching signal, and according to the switch Signal and the voltage choose unit U22 selection signal, select one kind in the multiple voltage output as the tune Section reference voltage REF_O is exported.

With further reference to Fig. 4, the circuit knot of reference voltage adjustment module in the specific embodiment of the utility model one is shown as Structure schematic diagram.The voltage, which chooses unit U22, includes at least one resistance, current source, one end ground connection of the resistance, the electricity The other end connection constant-current source of resistance, the voltage choose unit and enter the voltage at the resistance both ends with least one threshold voltage Row relatively chooses signal to the decoding gating unit to export, and the resistance is adjustable resistance.Wherein, in the adjustable resistance Put or be external in the controller.And in embodiment illustrated in fig. 4, the voltage is chosen unit U22 and compared including first voltage Device UA1, second voltage comparator UA2, tertiary voltage comparator UA3, resistance R1, resistance R2 and constant-current source DC；The decoding Gating unit U21, which includes decoding gate UA4, the voltage regulation unit U23, includes operational amplifier UA5, the pole of field-effect three Pipe N1, resistance string, the resistance string include at least two resistance, and the resistant series in the resistance string, the resistance string One end is grounded, and the other end of the resistance string connects the source electrode of the fet and the decoding gating unit, and Each resistance in the resistance string electrically connects the decoding gating unit, specifically, the resistance string in the present embodiment by Resistance RR1, resistance RR2, resistance RR3, resistance RR4 and resistance RR5 are composed in series, the resistance R1 and the resistance R2 For adjustable resistance.

In the specific implementation, resistance R1 and R2 can be built-in or be external in chip.

In the specific embodiment of the utility model one, the first end ground connection of the resistance R1, the second end of the resistance R1 Electrically connect the constant-current source DC and the first voltage comparator UA1 electrode input end, the first voltage comparator UA1 The voltage of negative input be first threshold, in this specific embodiment, the first threshold is 1V, second comparator Electrode input end electrically connected with the second end of the resistance R1, the electricity of the negative input of the second voltage comparator UA2 Press as Second Threshold, in this specific embodiment, the Second Threshold is 2V, the first end ground connection of the resistance R2, the electricity Resistance R2 the second end electrical connection constant-current source DC and tertiary voltage comparator UA3 electrode input end, the described 3rd The voltage of voltage comparator UA3 negative input is the 3rd threshold value, and in this specific embodiment, the 3rd threshold value is 1V, The electrode input end of the operational amplifier UA5 receives the input of the reference voltage, the output end of the operational amplifier UA5 Electrically connected with the grid of the fet N1, the grounded drain of the fet N1, the pole of field-effect three Pipe N1 source electrode is electrically connected with the first end of the resistance RR5 and electrically connected with the negative input of the operational amplifier UA5, The second end of the resistance RR5 electrically connects with the first end of the resistance RR4, the second end and the resistance of the resistance RR4 RR3 first end electrical connection, the second end of the resistance RR3 electrically connect with the first end of the resistance RR2, the resistance RR2 The second end electrically connected with the first end of the resistance RR1, the second end of resistance RR1 ground connection, the decoding gate UA4 Receive the input of the switching signal, and the decoding gate UA4 and first voltage comparator UA1 output end, institute State second voltage comparator UA2 output end, the output end of the tertiary voltage comparator UA3, the first of the resistance RR5 End, the first end of the resistance RR4, the first end of the resistance RR3, the first end of the resistance RR2 and the resistance RR1 first end electrical connection, and the switching signals of the decoding gate UA4 to reception, the first voltage comparator The signal and the 3rd electricity of the output end output of the signal, the second voltage comparator UA2 of UA1 output end output The signal of pressure comparator UA3 output end output is compiled, to select the first end of the resistance RR5, the resistance RR4 First end, the first end of the resistance RR3, in the first end of the resistance RR2 and the resistance RR1 first end The voltage of one gives the electric current drive module as the regulation reference voltage output.

In the present embodiment, the electric current that the constant-current source provides is ib1, and electric current flows into resistance R1, produces pressure drop VR1, RD1 It is connected to two comparators UA1, UA2 anode, UA1, the negative termination voltage ref1 of UA2 comparators, and ref2.

V (RD1)=ib1*R1；

When RD1 voltages, less than ref1, then comparator UA1 exports low level, UA2 output low levels；A=B=0

When RD1 voltages are higher than ref1 and are less than ref2, then comparator UA1 exports high level, UA2 output low levels；A= 1, B=0

When RD1 voltages, higher than ref2, then comparator UA1 exports high level, UA2 output high level；A=B=1

Ib2 electric currents flow into resistance R2, produce pressure drop VR2, RD2 and are connected to comparator UA3 anode, UA3 comparators are born Termination voltage ref3.

V (RD2)=ib2*R2；

When RD2 voltages, less than ref3, then comparator UA3 exports low level；C=0

When RD2 voltages, higher than ref3, then comparator UA3 exports high level；C=1

Thus which can be in by comparator UA1, UA2, UA3 output identification RD1, the outer meeting resistance impedance of RD2 pins Individual region.

UA5 output driving NMOS, amplifier negative terminal is fed back to, divider resistance RR1~RR5 is met under NMOS.

Below with ref1=1V, exemplified by ref2=2v, ref3=1v, illustrate the output voltage situation of a, b, c, d, e each point：

A=REF；

B=REF* (RR1+RR2+RR3+RR4)/(RR1+RR2+RR3+RR4+RR5)=0.85*REF；

C=REF* (RR1+RR2+RR3)/(RR1+RR2+RR3+RR4+RR5)=0.75*REF；

D=REF* (RR1+RR2)/(RR1+RR2+RR3+RR4+RR5)=0.65*REF；

E=REF* (RR1)/(RR1+RR2+RR3+RR4+RR5)=0.5*REF；

I.e. in the illustration, there is provided 50%, 65%, 75%, 85% and 100% this five kinds of voltage-regulation moulds Formula, that is, adjust reference voltage and be adjusted to 50%, 65%, 75%, 85% and the 100% of reference voltage respectively.

In other implementations, the resistance of any one resistance in R1, R2 and resistance string can be adjusted, is adjusted with changing Reference voltage REF is saved, and regulation reference voltage REF can be adjusted to the arbitrary proportion of reference voltage.

Work as G1, when being high level during G2 differences, REF_O=REF.When G1=G2=high level, RD1 outer meeting resistance R1, RD2 outer meeting resistances R2, REF_O output voltage：

ABC	REF_O
		000	d
001	a
		100	b
101	e
		110	c
111	e

In this specific embodiment, the structure of the mode detection module U3 is as shown in figure 5, the mode detection module U3 includes switching signal output unit UB1 and low level detection unit UB2, and switching signal output unit UB1, which has, receives mould The input port DET of formula control signal, and the output port G1 and G2 with switching signal, the low level detection unit UB2 The low level time of the mode control signal is detected, and when low level time is more than a threshold value, by RST ports to opening OFF signal output unit UB1 sends reset signal.The mode detection module U3 receives external switch module by DET ports The mode control signal of transmission, switching signal corresponding to G1 and G2 outputs is made, signal condition is as shown in fig. 6, work as DET low levels When, G1, G2 low levels, after DET inputs the high level pulse of different quantity, G1, the G2 figure more than switch in order.First Pulse G1 high level, G2 low levels, second pulse G1 low level, G2 high level, the 3rd pulse G1, G2 are all high level, 4th pulse returns to state G1 high level and the low level states of G2, by that analogy.Low level detection unit UB2 modules are used In low level time detect, when the DET times exceed 10S, export reset signal RST, reset UB1 modules, even UB1 reset, under Secondary DET again high level when, start again from the 1st state (in the present embodiment, first state is G1 high level, G2 low levels) Count.

Further regard to shown in Fig. 7, be shown as the electricity of electric current drive module of the present utility model in one embodiment Road principle schematic.The electric current drive module U4 includes comparator UC1, comparator UC2, fet N2, field-effect Triode N3, resistance R3 and resistance R4, the electrode input end of the comparator UC1 are connected with REF_O, the comparator UC1 Negative pole electrically connected with the source electrode of the fet N2, the output end of the comparator UC1 and the pole of field-effect three Pipe N2 grid electrical connection, the source electrode of the fet N2 are grounded by the resistance R3, and the comparator UC1's makes Energy end receives the input of the switching signal G1, and the drain electrode of the fet N2 passes through inductance L1 and the first via is luminous single The input electrical connection of member, constant current input is provided for first via luminescence unit.The electrode input end and REF_ of the comparator UC2 O connections, the negative pole of the comparator UC2 electrically connect with the source electrode of the fet N3, the output of the comparator UC2 End is electrically connected with the grid of the fet N3, and the source electrode of the fet N3 is connect by the resistance R4 Ground, the Enable Pin of the comparator UC2 receive the input of the switching signal G2, and the drain electrode of the fet N3 passes through Inductance L2 is electrically connected with the input of the second road luminescence unit, and constant current input is provided for the second road luminescence unit.And IL1 is electricity Feel L1 current waveform, A1 is fet N2 switch controlling signal, and CS1 is the voltage wave at resistance R3 ungrounded end Shape, ILED are the current waveforms of LED in the luminescence unit connected by inductance L1, and in a particular application, IL1, A1, CS1, with And ILED waveform is as shown in figure 8, REF_O DC reference voltage input comparator UC1, UC2 comparator anodes, resistance under CS1 R3 connects feedback resistance, when CS1 voltages less than REF_O be comparator output high level open N1, CS1 is charged, the low electricity of IO1 Flat, close to 0V, inductance L1 is electrically charged, and after CS1 voltages reach REF_O, N1, D1 high level, IO1 are closed in comparator UC1 upsets Clamper is carried out by DD1 to be discharged in voltage HV, inductance L1.IO1 jumps low level after inductive discharge terminates, and N1 is reopened, Inductive current peak voltage REF_O/CS1, it is zero after discharge off, inductance average current is 0.5* (REF_O/CS1), inductance electricity Stream all flows through LED string, and the average current of LED string is controlled with this can, and L1 and C1 form the further mistake of filter circuit LED electric current is flowed through in filter.G1 is switching signal, and high level works, and low level is stopped.

ILED=0.5* (REF_O/CS1)；

Above is the type of drive that first via luminescence unit is luminous, and pass through comparator UC2, resistance R4 and field-effect What the driving principle of the drive circuit of the second road luminescence unit of triode N3, inductance L2 composition lighted with first via luminescence unit Driving principle and type of drive are similar, not repeated description herein.

Fig. 9 is further regarded to, is shown as the principle schematic of illuminating circuit in the specific embodiment of the utility model one.It is described Illuminating circuit 3 includes controller 2 as shown in Figure 2 and receives the light emitting module 31 that the controller 2 is dimmed and driven, institute Stating controller 2 can be integrated on chip.In the present embodiment, the light emitting module 31 includes two luminescence units, i.e., luminous Unit 311 and luminescence unit 312, in addition to constant-current source DC, luminescence unit 311 include diode DD1, electric capacity C1 and multiple The LED of series connection, diode DD1 anode and the LED negative electrode connected electrically connect, and diode DD1 negative electrode is with the LED's that connects Anode electrically connects, and electric capacity C1 is connected in parallel on multiple LED being connected in series both ends, and multiple LED being connected in series negative electrode passes through Inductance L1 receives the current drive signal that the electric current drive module U4 is sent, and diode DD1 negative electrode is with constant-current source DC's Positive pole electrically connects, and constant-current source DC negative pole ground connection, the circuit structure of luminescence unit 312 is similar with luminescence unit 312, with reference to hair Structure shown by the description of light unit 311 and accompanying drawing 9 can be drawn, be not added with repeating herein.

In summary, the utility model proposes a kind of illuminating circuit and its controller of application, wherein, controller be used for pair Light emitting module is dimmed, and the light emitting module includes at least one luminescence unit, and the controller is adjusted including reference voltage Module, the external reference voltage of reference voltage adjustment module and switching signal, to according to the switching signal, to the reference Voltage is adjusted accordingly, and generates regulation reference voltage to export.I.e. the utility model can according to different switching signals, Reference voltage is adjusted, and then adjusts the luminous situation of luminescence unit, the intelligent of product is lifted and improves Consumer's Experience. So the utility model effectively overcomes various shortcoming of the prior art and has high industrial utilization.

Above-described embodiment only illustrative principle of the present utility model and its effect are new not for this practicality is limited Type.Any person skilled in the art can all be carried out without prejudice under spirit and scope of the present utility model to above-described embodiment Modifications and changes.Therefore, such as those of ordinary skill in the art without departing from the essence disclosed in the utility model God and all equivalent modifications completed under technological thought or change, should be covered by claim of the present utility model.

Claims

A kind of 1. controller for illuminating circuit, it is characterised in that for being dimmed to light emitting module, the light emitting module Including at least one luminescence unit, the controller includes：

Reference voltage adjustment module, an external reference voltage and switching signal, to according to the switching signal, to the reference Voltage is adjusted accordingly, and generates regulation reference voltage to export.
2. controller according to claim 1, it is characterised in that：The controller also includes：Reference voltage generation module, To generate the reference voltage.
3. controller according to claim 1 or 2, it is characterised in that：The controller also includes：Mode detection module, For distinguishing corresponding switching signal with least one luminescence unit with defeated according to the mode control signal received, generation Go out.
4. controller according to claim 3, it is characterised in that：The controller also includes：Electric current drive module, with institute State light emitting module, reference voltage adjustment module and the mode detection module electrical connection, to according to the switching signal with And the regulation reference voltage is respectively to driving current corresponding to the corresponding luminescence unit output.
5. controller according to claim 1, it is characterised in that：The switching signal includes luminescence unit point corresponding to order Corresponding to bright ON signal and order luminescence unit extinguish OFF signal, and when all switching signals are ON signal or When in the presence of two being at least while ON signal in the switching signal, the reference voltage adjustment module is according to the voltage of selection The reference voltage is adjusted shaping modes.
6. controller according to claim 3, it is characterised in that：The switching signal includes luminescence unit point corresponding to order Corresponding to bright ON signal and order luminescence unit extinguish OFF signal, and when all switching signals are ON signal or When in the presence of two being at least while ON signal in the switching signal, the reference voltage adjustment module is according to the voltage of selection The reference voltage is adjusted shaping modes.
7. controller according to claim 4, it is characterised in that：The luminescence unit is two, when all switches When in the presence of two being at least while ON signal when signal is ON signal or in the switching signal, the reference voltage regulation Module carries out corresponding proportion to the reference voltage according to the voltage-regulation pattern of selection and zoomed in or out, to generate the tune Save reference voltage.
8. controller according to claim 7, it is characterised in that：It is equal when at least while there is two in the switching signal For ON signal when, the reference voltage adjustment module according in the switching signal simultaneously for ON signal switching signal number Select the voltage-regulation pattern.
9. controller according to claim 3, it is characterised in that：The mode control signal is a mode control module root Generated according to the control instruction of reception；And the mode control module is according to the multiple control instructions received successively, and The mode control signal that circulation output matches with current control instruction in a predetermined sequence respectively.
10. controller according to claim 9, it is characterised in that：One is pre-set in the mode control module to write from memory The mode control signal recognized, and ought currently receive the time of the control instruction and the last time phase difference for receiving control instruction During more than a preset time threshold, the mode control module is made to export the mode control signal of the acquiescence.
11. controller according to claim 1, it is characterised in that：The reference voltage adjustment module includes decoding and gated Unit, the voltage electrically connected with the decoding gating unit choose unit, the voltage tune electrically connected with the decoding gating unit Unit is saved, the voltage regulation unit is used for the input for receiving the reference voltage, and the reference voltage is adjusted to have The voltage output of multiple voltage size, the decoding gating unit receive the input of the switching signal, and according to the switch Signal and the voltage choose the selection signal of unit, select one kind in the multiple voltage output as the regulation ginseng Voltage is examined to be exported.
12. controller according to claim 11, it is characterised in that：The voltage, which chooses unit, includes at least one electricity Resistance, current source, one end ground connection of the resistance, the other end connection constant-current source of the resistance, the voltage choose unit by institute The voltage for stating resistance both ends chooses signal to the decoding gating unit, institute compared with least one threshold voltage with output It is adjustable resistance to state resistance.
13. controller according to claim 12, it is characterised in that：The adjustable resistance is built-in or is external in the control Device.
14. controller according to claim 11, it is characterised in that：The decoding gating unit includes decoding gate.
15. controller according to claim 11, it is characterised in that：The voltage regulation unit includes operational amplifier (UA5), fet (N1), resistance string, the resistance string include at least two resistance, and the resistance in the resistance string Series connection, one end ground connection of the resistance string, the other end of the resistance string connect source electrode and the institute of the fet Decoding gating unit is stated, and each resistance in the resistance string electrically connects the decoding gating unit, the operational amplifier (UA5) electrode input end receives the input of the reference voltage, and output end and the field of the operational amplifier (UA5) are imitated The grid of triode (N1) is answered to electrically connect, the drain electrode connection power supply of the fet (N1), the fet (N1) source electrode also with the negative input of the operational amplifier (UA5) it is electric and it is described decoding gating unit be connected.
16. controller according to claim 11, it is characterised in that：The voltage is chosen unit and compared including first voltage Device (UA1), second voltage comparator (UA2), tertiary voltage comparator (UA3), resistance (R1), resistance (R2) and constant-current source (DC), the first end ground connection of the resistance (R1), the second end of the resistance (R1) electrically connect the constant-current source (DC) and institute First voltage comparator (UA1) electrode input end is stated, the voltage of the negative input of the first voltage comparator is first Threshold value, the electrode input end of the second voltage comparator electrically connect with the second end of the resistance (R1), the second voltage The voltage of the negative input of comparator (UA2) is Second Threshold, the first end ground connection of the resistance (R2), the resistance (R2) The second end electrically connect the electrode input end of the constant-current source (DC) and the tertiary voltage comparator (UA3), the described 3rd The voltage of the negative input of voltage comparator (UA3) is the 3rd threshold value, the first voltage comparator (UA1), second voltage Comparator (UA2), tertiary voltage comparator (UA3) output choose signal to the decoding gating unit.
17. controller according to claim 11, it is characterised in that：The controller also includes electric current drive module；Institute Stating decoding gating unit includes decoding gate；The voltage regulation unit includes operational amplifier (UA5), fet (N1), resistance string；The voltage, which chooses unit, includes first voltage comparator (UA1), second voltage comparator (UA2), the 3rd Voltage comparator (UA3)；The resistance string includes resistance (RR1), resistance (RR2), resistance (RR3), resistance (RR4), Yi Ji electricity Hinder (RR5), the electrode input end of the operational amplifier (UA5) receives the input of the reference voltage, the operational amplifier (UA5) output end electrically connects with the grid of the fet (N1), and the drain electrode of the fet (N1) connects Ground, the source electrode of the fet (N1) electrically connected with the first end of the resistance (RR5) and with the operational amplifier (UA5) negative input electrical connection, the second end of the resistance (RR5) electrically connect with the first end of the resistance (RR4), institute The second end for stating resistance (RR4) electrically connects with the first end of the resistance (RR3), the second end of the resistance (RR3) with it is described The first end electrical connection of resistance (RR2), the second end of the resistance (RR2) electrically connect with the first end of the resistance (RR1), institute The second end ground connection of resistance (RR1) is stated, the decoding gate (UA4) receives the input of the switching signal, and the decoding The output end of gate (UA4) and the first voltage comparator (UA1), the output end of the second voltage comparator (UA2), The output end of the tertiary voltage comparator (UA3), the first end of the resistance (RR5), the first end of the resistance (RR4), The first end of the resistance (RR3), the first end of the resistance (RR2) and

The first end electrical connection of the resistance (RR1), and the switching signal for decoding gate (UA4) to reception, institute State the output end output of the signal, the second voltage comparator (UA2) of the output end output of first voltage comparator (UA1) The signal of the output end of signal and the tertiary voltage comparator (UA3) output is compiled, to select the resistance (RR5) first end, the first end of the resistance (RR4), the first end of the resistance (RR3), the first of the resistance (RR2) The voltage of one of the first end of end and the resistance (RR1) gives the electric current as the regulation reference voltage output Drive module.
18. a kind of illuminating circuit, it is characterised in that including light emitting module, and as any one of claim 1~17 Controller, the light emitting module include at least one luminescence unit, and the controller can be integrated on chip.