CN105101574A - Two-wire light emitting diode (LED) driving control integrated circuit with power supply and signal combined - Google Patents
Two-wire light emitting diode (LED) driving control integrated circuit with power supply and signal combined Download PDFInfo
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- CN105101574A CN105101574A CN201510559991.1A CN201510559991A CN105101574A CN 105101574 A CN105101574 A CN 105101574A CN 201510559991 A CN201510559991 A CN 201510559991A CN 105101574 A CN105101574 A CN 105101574A
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Abstract
The invention relates to a two-wire light emitting diode (LED) driving control integrated circuit with power supply and signal combined. The two-wire LED driving control integrated circuit with power supply and signal combined comprises a voltage detection module, an oscillation module, a logic module, a decoding module, a constant current module, multiple groups of light emitting diodes and a power supply, wherein the voltage detection module and the oscillation module are connected with the logic module, the logic module is connected with the decoding module, each group of light emitting diodes is formed by N light emitting diodes, cathodes of the multiple groups of light emitting diodes are connected in parallel and grounded, anodes of the multiple groups of light emitting diodes are connected with the constant current module through switches, the other end of the constant current module is connected in parallel and connected with the power supply, the decoding module is connected with the switches, and the other end of the voltage detection module is connected with the power supply. In the two-wire LED driving control integrated circuit, signals 1.0.mark are judged according to the falling edge time of a high potential and a low potential, an address, a brightness value and the like are respectively read through a section of continuous signals, and thus, the programmable two-wire LED driving integrated circuit is achieved.
Description
Technical field
The present invention relates to integrated circuit, be specifically related to a kind of two-wire system LED drived control integrated circuit combined with signal of powering.
Background technology
Fig. 1 is traditional signal LED control circuit, independent power supply VCC and GND, obtains data by the input of Data-in data, judge whether be current LED if not, export to next LED from Data-out, if current LED, so usage data is gone to drive current LED.
Summary of the invention
For above the deficiencies in the prior art, the invention provides a kind of two-wire system LED drived control integrated circuit combined with signal of powering.
A kind of two-wire system LED drived control integrated circuit combined with signal of powering, the two-wire system LED drived control integrated circuit that described power supply combines with signal comprises detection voltage module, concussion module, Logic module, decoder module, constant flow module, array light-emitting diode, power supply, described detection voltage module, concussion model calling Logic module, described Logic model calling decoder module, often group light-emitting diode in described array light-emitting diode is formed by connecting by N number of diode, ground connection after the negative pole parallel connection of described array light-emitting diode, positive pole connects constant flow module by switch, power supply is connected after the parallel connection of the described constant flow module other end, described decoder module connecting valve, the described detection voltage module other end connects power supply.
Described detection voltage module is that DetectVDDvoltage detects voltage module.
Described concussion module is OSC module.
Described constant flow module is CC constant flow module.
Described decoder module is Codec module.
Beneficial effect of the present invention is: the invention provides a kind of two-wire system LED drived control integrated circuit combined with signal of powering, the trailing edge time of high potential and electronegative potential is utilized to judge signal 1.0.mark, address is read respectively by one section of continuous print signal, brightness value etc., thus realize two-wire system LED drive integrated circult able to programme.
Accompanying drawing explanation
Fig. 1 is traditional signal LED control circuit;
Fig. 2 is circuit connection diagram of the present invention;
In figure: 1 for detecting voltage module; 2 is concussion module; 3 is Logic module; 4 is decoder module; 5 is constant flow module; 6 is light-emitting diode; 7 is switch.
Embodiment
Illustrate below in conjunction with embodiment and accompanying drawing and the present invention is described in further details.
As shown in Figure 2, a kind of two-wire system LED drived control integrated circuit combined with signal of powering, the two-wire system LED drived control integrated circuit that described power supply combines with signal comprises and detects voltage module 1, concussion module 2, Logic module 3, decoder module 4, constant flow module 5, array light-emitting diode 6, power supply, described detection voltage module 1, concussion module 2 connects Logic module 3, described Logic module 3 connects decoder module 4, often group light-emitting diode 6 in described array light-emitting diode 6 is formed by connecting by N number of diode, ground connection after the negative pole parallel connection of described array light-emitting diode 6, positive pole connects constant flow module 5 by switch 7, power supply is connected after the parallel connection of described constant flow module 5 other end, described decoder module 4 connecting valve 7, described detection voltage module 1 other end connects power supply, the type of light-emitting diode 6 does not limit in the present invention, can be other driving tubes, if change the type of light-emitting diode 6, realize other functions to be also fine.The invention provides a kind of two-wire system LED drived control integrated circuit combined with signal of powering, the trailing edge time of high potential and electronegative potential is utilized to judge signal 1.0.mark, address is read respectively by one section of continuous print signal, brightness value etc., thus realize two-wire system LED drive integrated circult able to programme.
As shown in Figure 1, traditional signal LED control circuit, independent power supply VCC and GND, obtain data by the input of Data-in data, judge whether be current LED if not, export to next LED from Data-out, if current LED, so usage data is gone to drive current LED.The present invention is directed to the drawback of prior art, a kind of two-wire system LED drived control integrated circuit having power supply and combine with signal is proposed, the trailing edge time of high potential and electronegative potential is utilized to judge that high potential is such as set to 5V by signal 1.0.mark., electronegative potential is set to 2.5V, after the falling edge triggering of 5V to 2.5V, read 2.5V and judge signal 1.0.mark the time, read address respectively by one section of continuous print signal, brightness value etc., thus realize two-wire system LED drive integrated circult able to programme.
DetectVDDvoltage detects voltage module 1: as VDD<3V, this module output low level; During VDD>3V, this module exports high level.By this module, power supply signal can be converted to data-signal.
CC constant flow module 5: this module is for generation of constant current output, and when preventing mains voltage variations larger, output current change is excessive.
OSC module: concussion module 2.
Logic module 3: button and logical circuit, pulse resets, and wherein comprises multiple with Men Feimen or door. trigger.This module detects the detectVDDvoltage low level time, when low level time is 16 ~ 32 times of the OSC cycle, thinks 0 yard; When low level time is 32 ~ 64 times of the OSC cycle, think 1 yard; When low level time is greater than 64 times of OSC cycles, think frame end code.The address itself be fixed when the address that module receives and module is consistent, just can receive data, otherwise thinks invalid.
Codec module: decoder module 4.
When this circuit is started working, OSC module continuous firing, DetectVDDvoltage detects voltage module 1, can detect the voltage on power supply, as VDD<3V, this module output low level; During VDD>3V, this module exports high level.Be as the criterion by OSC module and calculate low level time, the low level time of every section is supplied to Logic module 3, complete information before mark code is stored in Logic module 3, data are sent to R group (LED1-LED2 by after the decoding of Codec module by the complete information of Logic module 3 respectively ... N number of light-emitting diode 6) light-emitting diode 6, G group light-emitting diode 6, B group light-emitting diode 6.Each Light-Emitting Diode also has CC constant flow module 5, makes the color of LED when colour mixture more accurate.
Inside of the present invention is integrated with the circuit such as data latches.By the gray scale adjustment, cascade Mach-Zehnder interferometer etc. of peripheral this chip of MCU control realization.Properties of product are excellent, reliable in quality.Its main feature is that data and power line share, PWM control end can realize that 256 grades of gray scales regulate, output constant current etc.
Following technique effect can be realized by the present invention:
The present invention adopts power supply to combine with signal under a kind of DC power supply application conditions, make LED according to programming conducting and the control circuit turning off corresponding LED, the trailing edge time of high potential and electronegative potential is utilized to judge signal 1.0.mark, address is read respectively by one section of continuous print signal, brightness value etc., thus realize two-wire system LED drive integrated circult able to programme.
Above embodiment is only a specific execution mode of the present invention, but not limitation of the present invention, all those skilled in the art make some adjustment according to design of the present invention and change, such as increase or reduce the quantity of LED segmentation, change the type etc. of light-emitting diode 6, be still main idea place of the present invention, all because of within the scope of the present invention.
Claims (5)
1. the two-wire system LED drived control integrated circuit combined with signal of powering, it is characterized in that two-wire system LED drived control integrated circuit that described power supply combines with signal comprises and detect voltage module 1, concussion module 2, Logic module 3, decoder module 4, constant flow module 5, array light-emitting diode 6, power supply, described detection voltage module 1, concussion module 2 connects Logic module 3, described Logic module 3 connects decoder module 4, often group light-emitting diode 6 in described array light-emitting diode 6 is formed by connecting by N number of diode, ground connection after the negative pole parallel connection of described array light-emitting diode 6, positive pole connects constant flow module 5 by switch 7, power supply is connected after the parallel connection of described constant flow module 5 other end, described decoder module 4 connecting valve 7, described detection voltage module 1 other end connects power supply.
2. a kind of two-wire system LED drived control integrated circuit combined with signal of powering according to claim 1, is characterized in that described detection voltage module 1 is for DetectVDDvoltage detection voltage module 1.
3. a kind of two-wire system LED drived control integrated circuit combined with signal of powering according to claim 1, is characterized in that described concussion module 2 is OSC module.
4. a kind of two-wire system LED drived control integrated circuit combined with signal of powering according to claim 1, is characterized in that described constant flow module 5 is CC constant flow module 5.
5. a kind of two-wire system LED drived control integrated circuit combined with signal of powering according to claim 1, is characterized in that described decoder module 4 is for Codec module.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510559991.1A CN105101574A (en) | 2015-09-06 | 2015-09-06 | Two-wire light emitting diode (LED) driving control integrated circuit with power supply and signal combined |
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| CN201510559991.1A CN105101574A (en) | 2015-09-06 | 2015-09-06 | Two-wire light emitting diode (LED) driving control integrated circuit with power supply and signal combined |
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Cited By (3)
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| CN106132013A (en) * | 2016-07-14 | 2016-11-16 | 深圳市菉华半导体有限公司 | A kind of Power Carrier communication LED control method |
| CN106211433A (en) * | 2016-07-14 | 2016-12-07 | 深圳市菉华半导体有限公司 | A kind of Power Carrier communication LED control chip |
| CN114842636A (en) * | 2022-04-07 | 2022-08-02 | 深圳盈特创智能科技有限公司 | Double-line communication control device and one-machine multi-purpose equipment |
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Application publication date: 20151125 |
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