CN106535412B - The digital simulation light adjusting circuit that a kind of port shares - Google Patents
The digital simulation light adjusting circuit that a kind of port shares Download PDFInfo
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- CN106535412B CN106535412B CN201611188715.XA CN201611188715A CN106535412B CN 106535412 B CN106535412 B CN 106535412B CN 201611188715 A CN201611188715 A CN 201611188715A CN 106535412 B CN106535412 B CN 106535412B
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- comparator
- door
- input
- simulation light
- buffer
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The invention discloses the digital simulation light adjusting circuit that a kind of port shares, including comparator module, buffer module, gate logic module；Wherein, comparator module includes first, second comparator A1 and A2, first comparator A1 handles digital dimming and passes through buffer module B1, B2 and capacitance C controls the Enable Pin EN working conditions of the second comparator A2, second comparator A2 processing simulation light modulations, through two comparators treated dim signal again by gate logic module or door or and export with door and, it is to incorporate simulation light modulation and the input interface of digital dimming that beneficial effects of the present invention, which are, so that an input port has the function of analog- and digital- light modulation simultaneously, it is simple in structure simultaneously, save chip area and packaging cost.
Description
Technical field
The present invention relates to electronic circuit technology field, digital simulation light adjusting circuit that especially a kind of port shares.
Background technology
LED power chip usually has the function of simulation light modulation and digital dimming, however LED power chip is simulated and number
Dimming function is usually different input ports, and different circuit modular structures also increases while increasing circuit complexity
Chip area and packaging cost.
Therefore, for LED power driving, the digital simulation light adjusting circuit that port shares can integrate simulation well
It with the function of digital dimming, and is inputted by a port, so as to save chip area and packaging cost.
Invention content
The technical problems to be solved by the invention are：The digital simulation light adjusting circuit that a kind of port shares, Ke Yitong are provided
An input port is crossed to realize the function of simulation and digital dimming, with overcome the deficiencies in the prior art.
The invention is realized in this way：
The digital simulation light adjusting circuit that a kind of port shares, including comparator module, buffer module, gate logic module,
Comparator module is made of first comparator A1 and the second comparator A2, first comparator A1 in-phase input ends connection reference voltage
Vref, inverting input connect the second comparator A2 in-phase ends P and or door or input terminal IN2, output terminal connection buffer B1
Input terminal；Second comparator A2 in-phase input ends connect first comparator A1 reverse input ends and/or door or input terminal IN2, reversely
Input terminal connect sawtooth signal Vpeak, Enable Pin EN connections buffer B2 output terminals and or door or input terminal IN1, export
End connection gate logic module with door and input terminals；Buffer module is made of two buffers B1, B2 and capacitance C, wherein slow
Device B1 input terminals connection first comparator A1 output terminals, output terminal connection capacitance C and buffer B2 are rushed, the capacitance C other ends are grounded,
Buffer B2 output terminals connect the second comparator A2 EN ends and or door or input terminals IN1；Gate logic module by or door or and
With door and form, wherein or door or input terminals IN1 connection buffer B2 output terminals, input terminal IN2 connection first comparators A1 it is anti-
Phase input terminal and the second comparator A2 in-phase input ends, output terminal connection and door and input terminals IN2；It is connect with door and input terminals
Second comparator A2 output terminals.
In the digital simulation light adjusting circuit that a kind of aforementioned port shares, the second comparator A2 Enable Pins EN is high level
When, comparator normal work；When comparator A2 Enable Pins EN is low level, comparator output is high level.
In the digital simulation light adjusting circuit that a kind of aforementioned port shares, first comparator A1 processing digital dimmings simultaneously control
The working condition of second comparator A2, the second comparator A2 processing simulation light modulations.
In the digital simulation light adjusting circuit that a kind of aforementioned port shares, when simulation light modulation inputs, comparator A1 backward ends
Input signal Vin, comparator A1 hold reference voltage Vref and comparator A2 backward ends to input the peak value of sawtooth signal in the same direction
The relationship of Vpeak meets：Vin ＜ Vpeak ＜ Vref.
In the digital simulation light adjusting circuit that a kind of aforementioned port shares, buffer B1 have to capacitance C the velocity of discharge it is fast,
The slow function of charging rate.
In the digital simulation light adjusting circuit that a kind of aforementioned port shares, gate logic module is respectively with door and input terminals
Simulate dim signal DIM_A and digital dim signal DIM_D.
In the digital simulation light adjusting circuit that a kind of aforementioned port shares, the second comparator A2 output terminals are simulation light modulation letter
Number DIM_A, gate logic module or door or output terminals are digital dimming signal DIM_D.
Compared with prior art, it is to incorporate simulation light modulation and the input of digital dimming connects that beneficial effects of the present invention, which are,
Mouthful so that an input port has the function of analog- and digital- light modulation, while simple in structure simultaneously, save chip area with
Packaging cost.
Description of the drawings
Attached drawing 1 is the principle of the present invention schematic diagram；
Input voltage and output voltage relational graph when attached drawing 2 is present invention simulation light modulation input；
Input voltage and output voltage relational graph when attached drawing 3 is digital dimming input of the present invention.
Specific embodiment
The embodiment of the present invention：The digital simulation light adjusting circuit that a kind of port shares, as shown in drawings, including comparator mould
Block, buffer module, gate logic module, comparator module are made of first comparator A1 and the second comparator A2, and first compares
Device A1 in-phase input ends connect reference voltage Vref, inverting input connect the second comparator A2 in-phase ends P and or door or it is defeated
Enter and hold IN2, output terminal connection buffer B1 input terminals；Second comparator A2 in-phase input ends connection first comparator A1 is reversely defeated
Enter end and/or door or input terminal IN2, reverse input end connection sawtooth signal Vpeak, Enable Pin EN connection buffers B2 output
End and or door or input terminal IN1, output terminal connection gate logic module with door and input terminals；Buffer module is slow by two
Rush device B1, B2 and capacitance C compositions, wherein buffer B1 input terminals connection first comparator A1 output terminals, output terminal connection capacitance C
With buffer B2, capacitance C other ends ground connection, buffer B2 output terminals connect the second comparator A2 EN ends and or door or inputs
Hold IN1；Gate logic module by or door or and form with door and, wherein or door or input terminals IN1 connection buffers B2 outputs
End, input terminal IN2 connections first comparator A1 inverting inputs and the second comparator A2 in-phase input ends, output terminal connection and door
And input terminals IN2；The second comparator A2 output terminals are connect with door and input terminals.
When wherein the second comparator A2 Enable Pins EN is high level, comparator normal work；Comparator A2 Enable Pins EN is
During low level, comparator output is high level；First comparator A1 handles digital dimming and controls the work of the second comparator A2
State, the second comparator A2 processing simulation light modulations.
During simulation light modulation input, comparator A1 backward end input signals Vin, comparator A1 hold reference voltage Vref in the same direction,
And the relationship of the peak value Vpeak of comparator A2 backward ends input sawtooth signal meets：Vin ＜ Vpeak ＜ Vref, and buffer
Device B1 has the function of that the velocity of discharge is fast, charging rate is slow to capacitance C, and gate logic module is respectively to simulate with door and input terminals
Dim signal DIM_A1 and digital dim signal DIM_D2, the second comparator A2 output terminals is simulate dim signal DIM_A1, door
Logic module or door or output terminals are digital dimming signal DIM_D2.
Comparator module includes first, second comparator A1 and A2, first comparator A1 processing numbers in the present embodiment
Dim and pass through buffer module B1, B2 and capacitance C control the second comparator A2 Enable Pin EN working conditions, the second comparator
A2 processing simulation light modulations, through two comparators treated dim signal again by gate logic module or door or and with door and
Output.
Specifically operation principle is：
When second comparator A2 Enable Pins EN is high level, comparator normal work；Second comparator A2 Enable Pins EN is
During low level, comparator output is high level.
During simulation light modulation input, first comparator A1 backward end input signals Vin, first comparator A1 are held in the same direction with reference to electricity
Vref and the relationship of the peak value Vpeak of the second comparator A2 backward ends input sawtooth signal is pressed to meet：Vin ＜ Vpeak ＜
Vref.At this point, first comparator A1 outputs are high level, still it is high level, i.e. Enable Pin after buffered device B1, B2 and capacitance C
EN is high level, and the second comparator A2 is worked normally, since the input of comparator A2 inverting inputs N and in-phase input end P are believed
Number be respectively sawtooth wave and Vin, after comparison comparator output DIM_A be square-wave signal, and or mono- input terminal IN1 of door or be
Height is then height with mono- input terminal IN2 input DIM_D of door and.Then output terminal out output signals are the square wave identical with DIM_A
Signal, and Vin is bigger, the duty ratio of square-wave signal is bigger, as shown in Figure 2.
When digital dimming inputs, buffer B1 has the function of that the velocity of discharge is fast, charging rate is slow to capacitance C, when first
When comparator A1 backward ends input digital signal, first comparator A1 outputs are the digital signal identical with input signal.At this point,
Due to the effect of buffer B1 and capacitance C, the output end signal of buffer B2 remains low level, i.e. the second comparator A2 is enabled
Hold EN invalid, the second comparator A2 outputs are that an input terminal IN1 of high level or door or are the another of low level or door or
A input terminal IN2 is input signal Vin, is high level with mono- input terminal IN1 inputs DIM_A of door and, then output terminal out is defeated
Go out the digital signal identical with input signal Vin, as shown in Figure 3.
The description of said program is the invention being intended to facilitate those of ordinary skill in the art to understand and use, and is familiar with
The personnel of art technology obviously can easily make embodiment various modifications, and therefore, the present invention is not limited to above-mentioned realities
Scheme, those skilled in the art according to the method for the present invention, all should by improvement and modification made without departing from the scope of the present invention
Within protection scope of the present invention.
Claims (7)
1. the digital simulation light adjusting circuit that a kind of port shares, including comparator module, buffer module, gate logic module,
It is characterized in that：Comparator module is made of first comparator A1 and the second comparator A2, and first comparator A1 in-phase input ends connect
Connect reference voltage Vref, inverting input connect the second comparator A2 in-phase ends P and or door or input terminal IN2, output terminal connect
Connect buffer B1 input terminals；Second comparator A2 in-phase input ends connect first comparator A1 reverse input ends and/or door or inputs
Hold IN2, reverse input end connection sawtooth signal Vpeak, Enable Pin EN connections buffer B2 output terminals and or door or inputs
Hold IN1, output terminal connection gate logic module with door and input terminals；Buffer module is by two buffers B1, B2 and capacitance C
Composition, wherein buffer B1 input terminals connection first comparator A1 output terminals, output terminal connection capacitance C and buffer B2, capacitance C
The other end is grounded, and buffer B2 output terminals connect the second comparator A2 EN ends and or door or input terminals IN1；Gate logic module
By or door or and form with door and, wherein or door or input terminals IN1 connection buffer B2 output terminals, input terminal IN2 connections
One comparator A1 inverting inputs and the second comparator A2 in-phase input ends, output terminal connection and door and input terminals IN2；With door
And input terminals connect the second comparator A2 output terminals.
2. the digital simulation light adjusting circuit that a kind of port according to claim 1 shares, it is characterised in that：Second comparator
When A2 Enable Pins EN is high level, comparator normal work；When comparator A2 Enable Pins EN is low level, comparator output is height
Level.
3. the digital simulation light adjusting circuit that a kind of port according to claim 1 shares, it is characterised in that：First comparator
A1 handles digital dimming and controls the working condition of the second comparator A2, the second comparator A2 processing simulation light modulations.
4. the digital simulation light adjusting circuit that a kind of port according to claim 1 shares, it is characterised in that：Simulation light modulation is defeated
Fashionable, comparator A1 backward end input signals Vin, comparator A1 hold reference voltage Vref and comparator A2 backward ends in the same direction
The relationship for inputting the peak value Vpeak of sawtooth signal meets：Vin ＜ Vpeak ＜ Vref.
5. the digital simulation light adjusting circuit that a kind of port according to claim 1 shares, it is characterised in that：B1 pairs of buffer
Capacitance C has the function of that the velocity of discharge is fast, charging rate is slow.
6. the digital simulation light adjusting circuit that a kind of port according to claim 1 shares, it is characterised in that：Gate logic module
It is respectively to simulate dim signal DIM_A with door and input terminals（1）With digital dim signal DIM_D（2）.
7. the digital simulation light adjusting circuit that a kind of port according to claim 1 shares, it is characterised in that：Second comparator
A2 output terminals are simulation dim signal DIM_A（1）, gate logic module or door or output terminals are digital dimming signal DIM_D（2）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611188715.XA CN106535412B (en) | 2016-12-21 | 2016-12-21 | The digital simulation light adjusting circuit that a kind of port shares |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611188715.XA CN106535412B (en) | 2016-12-21 | 2016-12-21 | The digital simulation light adjusting circuit that a kind of port shares |
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| Publication Number | Publication Date |
|---|---|
| CN106535412A CN106535412A (en) | 2017-03-22 |
| CN106535412B true CN106535412B (en) | 2018-07-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611188715.XA Active CN106535412B (en) | 2016-12-21 | 2016-12-21 | The digital simulation light adjusting circuit that a kind of port shares |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107027224A (en) * | 2017-06-09 | 2017-08-08 | 厦门奇力微电子有限公司 | A kind of LED light adjusting circuits and LED drive circuit |
| EP3457814B1 (en) | 2017-09-15 | 2020-07-22 | Yu Jing Energy Technology Co., Ltd. | Dimming control optimization system |
| CN109526091B (en) * | 2017-09-20 | 2021-02-19 | 昱京能源科技股份有限公司 | Dimming control system |
| CN108322964B (en) * | 2018-04-03 | 2023-09-08 | 深圳茂硕电子科技有限公司 | LED driving power circuit |
| CN116112002B (en) * | 2023-04-12 | 2023-07-25 | 长鑫存储技术有限公司 | Comparison circuit |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4891828A (en) * | 1987-03-09 | 1990-01-02 | Oki Electric Industry Co., Ltd. | Voltage to pulse-width conversion circuit |
| US6314506B1 (en) * | 1998-12-28 | 2001-11-06 | Intel Corporation | Method and apparatus for determining a next address within a binary search algorithm |
| CN101466185A (en) * | 2007-12-21 | 2009-06-24 | 立锜科技股份有限公司 | Circuit and method for adjusting light |
| CN101742803A (en) * | 2008-11-12 | 2010-06-16 | 成都芯源系统有限公司 | Pulse dimming circuit and pulse dimming method |
| CN103327694A (en) * | 2013-06-26 | 2013-09-25 | 上海晶丰明源半导体有限公司 | Silicon controlled dimming LED drive circuit |
| CN103354685A (en) * | 2013-07-22 | 2013-10-16 | 广州晶锐信息技术有限公司 | LED driving chip |
| CN204031519U (en) * | 2014-06-11 | 2014-12-17 | 普诚科技（深圳）有限公司 | A kind of LED adjusting control circuit |
| CN104270861A (en) * | 2014-09-30 | 2015-01-07 | 成都芯源系统有限公司 | LED driver, control circuit and LED driving method |
| CN205017644U (en) * | 2015-09-09 | 2016-02-03 | 广州达森灯光股份有限公司 | LED dimmer circuit device |
| CN206283692U (en) * | 2016-12-21 | 2017-06-27 | 贵州恒芯微电子科技有限公司 | A kind of shared digital simulation light adjusting circuit in port |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6906793B2 (en) * | 2000-12-11 | 2005-06-14 | Canesta, Inc. | Methods and devices for charge management for three-dimensional sensing |
| US8067904B2 (en) * | 2009-07-20 | 2011-11-29 | Grenergy Opto, Inc. | Electronic ballast with dimming control from power line sensing |
-
2016
- 2016-12-21 CN CN201611188715.XA patent/CN106535412B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4891828A (en) * | 1987-03-09 | 1990-01-02 | Oki Electric Industry Co., Ltd. | Voltage to pulse-width conversion circuit |
| US6314506B1 (en) * | 1998-12-28 | 2001-11-06 | Intel Corporation | Method and apparatus for determining a next address within a binary search algorithm |
| CN101466185A (en) * | 2007-12-21 | 2009-06-24 | 立锜科技股份有限公司 | Circuit and method for adjusting light |
| CN101742803A (en) * | 2008-11-12 | 2010-06-16 | 成都芯源系统有限公司 | Pulse dimming circuit and pulse dimming method |
| CN103327694A (en) * | 2013-06-26 | 2013-09-25 | 上海晶丰明源半导体有限公司 | Silicon controlled dimming LED drive circuit |
| CN103354685A (en) * | 2013-07-22 | 2013-10-16 | 广州晶锐信息技术有限公司 | LED driving chip |
| CN204031519U (en) * | 2014-06-11 | 2014-12-17 | 普诚科技（深圳）有限公司 | A kind of LED adjusting control circuit |
| CN104270861A (en) * | 2014-09-30 | 2015-01-07 | 成都芯源系统有限公司 | LED driver, control circuit and LED driving method |
| CN205017644U (en) * | 2015-09-09 | 2016-02-03 | 广州达森灯光股份有限公司 | LED dimmer circuit device |
| CN206283692U (en) * | 2016-12-21 | 2017-06-27 | 贵州恒芯微电子科技有限公司 | A kind of shared digital simulation light adjusting circuit in port |
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| CN106535412A (en) | 2017-03-22 |
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