CN201523472U - SOC lighting management chip of LED lamp - Google Patents
SOC lighting management chip of LED lamp Download PDFInfo
- Publication number
- CN201523472U CN201523472U CN2009202273402U CN200920227340U CN201523472U CN 201523472 U CN201523472 U CN 201523472U CN 2009202273402 U CN2009202273402 U CN 2009202273402U CN 200920227340 U CN200920227340 U CN 200920227340U CN 201523472 U CN201523472 U CN 201523472U
- Authority
- CN
- China
- Prior art keywords
- circuit
- soc
- chip
- converter
- led
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000001360 synchronised effect Effects 0.000 claims abstract description 9
- 238000013021 overheating Methods 0.000 claims abstract description 8
- 238000005286 illumination Methods 0.000 claims description 15
- 238000011161 development Methods 0.000 description 4
- 239000004065 semiconductor Substances 0.000 description 4
- 230000006870 function Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Images
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
- Led Devices (AREA)
Abstract
The utility model discloses an SOC lighting management chip of an LED lamp, belonging to the SOC chip; the structure of the SOC lighting management chip comprises the SOC chip which is integrated with a microcontroller, an AD converter, a PWM controller and an LED drive circuit, wherein the microcontroller is connected with the AD converter; the AD converter is connected with the PWM controller; the PWM controller is connected with the LED driver circuit; and the LED drive circuit comprises a power supply management module, a band-gap reference and bias circuit, a ring-shaped oscillator circuit, an error amplifier circuit, a slope compensation generator, a PWM comparator, a combinational logical operation module, a synchronous rectification drive circuit, an overheating protection circuit and an over-current protection circuit. Compared with the prior art, the SOC lighting management chip of the LED lamp is characterized by small volume, low power consumption, high reliability, low cost and the like.
Description
Technical field
The utility model relates to a kind of SOC chip, specifically the SOC illumination supervision chip of LED lamp.
Background technology
Along with the development of semiconductor process techniques and IC designing technique, more and more Fu Za function is integrated on the chip, so SOC (system on a chip) SOC (System on a chip) occurred.SOC is integrated in microprocessor, Simulation with I P nuclear, digital IP kernel and memory on the one chip exactly, finishes complicated function.
Along with development of semiconductor, the LED illumination has also obtained development fast, the LED light-emitting diode is formed PN junction by N type semiconductor and P type semiconductor, when electric current the time by PN junction, electronics will be pushed the P district to, and in the P district, electronics is with hole-recombination, send energy with the form of photon then, the luminous principle of LED that Here it is.Compare with traditional lighting source, LED has following advantages: (1) volume is little, and the PN junction wafer is installed in the epoxy resin; (2), power consumption is low; (3), long service life, the life-span can reach 100,000 hours under suitable condition; (4), high brightness is low in calories, the energy that LED discharges mainly concentrates on visible region; (5), environmental protection, LED is that non-toxic material is made, and is recyclable; (6), sturdy and durable, LED is contained in the epoxy resin, is difficult for loosening.
Indulge the above, the LED illumination will have more vast market space in future, so also more and more important to the research and the design of LED illumination driving circuit.
But, the managing chip of present LED lamp, technical development is perfect not enough, has shortcomings such as power consumption height, poor reliability, cost height.
The utility model content
Technical assignment of the present utility model is at above weak point, provides that a kind of volume is little, the SOC illumination supervision chip of low-power consumption, high reliability, LED lamp with low cost.
The technical scheme that its technical problem that solves the utility model adopts is: comprise the SOC chip, be integrated with microcontroller, AD converter, PWM (pulse-width modulation) controller and led drive circuit on the SOC chip; Microcontroller connects AD converter, and AD converter connects the PWM controller, and the PWM controller connects led drive circuit; Led drive circuit comprises power management module, band-gap reference and biasing circuit, ring oscillator circuit, error amplifier circuit, slope compensation generator, PWM comparator, combinational logic computing module, synchronous rectification driving circuit, overheating protection circuit, circuit overcurrent protection; Band-gap reference and biasing circuit are connected with power management module, error amplifier circuit, PWM comparator respectively; error amplifier circuit is connected with the slope compensation generator; the slope compensation generator is connected with the PWM comparator; the PWM comparator is connected with the combinational logic computing module; the combinational logic computing module is connected with synchronous rectification driving circuit; ring oscillator circuit is connected with the PWM comparator, and overheating protection circuit all is connected with the combinational logic computing module with circuit overcurrent protection.
The PWM controller is connected with the error amplifier circuit of led drive circuit.
Microcontroller is 8 a microcontroller.
AD converter is 10 a AD converter, adopts the segma-delta structure.
Band-gap reference and biasing circuit temperature coefficient are 10 ppm.
Operation principle is as follows: the external world passes to analog signal of the present utility model, by 10 AD converter analog signal conversion is become the manageable digital signal of microcontroller; AD converter has adopted the segma-delta structure, obtains to change accurately figure place by over-sampling, and simultaneously treated frequency analog signal can reach 512KHz; Dispatch by 8 microcontroller through the digital signal after the AD converter conversion, form control signal and pass to the PWM controller, the PWM controller produces corresponding pulse signal again and sends led drive circuit to.
In the led drive circuit, power management module is used for producing correspondent voltage; Band-gap reference and biasing circuit can produce direct voltage or the electric current with definite temperature characterisitic; Ring oscillator circuit is used for producing to the input signal of PWM comparator as benchmark; Overheating protection circuit can produce reset signal when the utility model temperature is too high, circuit overcurrent protection also can produce reset signal when electric current is excessive.The pulse signal that the PWM controller produces enters the combinational logic computing module through behind error amplifier circuit, slope compensation generator and the PWM comparator, produce the last synchronous rectification driving circuit of corresponding signal controlling by the combinational logic computing module, finally come the output current of stabilizing circuit, thereby realize constant current function by the LED lamp by synchronous rectification driving circuit.
The SOC illumination supervision chip of LED lamp of the present utility model is compared with prior art, has that volume is little, low-power consumption, high reliability, characteristics such as with low cost, thereby, have good value for applications.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further specified.
Accompanying drawing 1 is the circuit structure block diagram of the SOC illumination supervision chip of LED lamp;
Accompanying drawing 2 is the circuit structure block diagram of led drive circuit of the SOC illumination supervision chip of LED lamp.
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
The SOC illumination supervision chip of LED lamp of the present utility model, its structure comprises the SOC chip, is integrated with microcontroller, AD converter, PWM (pulse-width modulation) controller and led drive circuit on the SOC chip; Microcontroller connects AD converter, and AD converter connects the PWM controller, and the PWM controller connects led drive circuit; Led drive circuit comprises power management module, band-gap reference and biasing circuit, ring oscillator circuit, error amplifier circuit, slope compensation generator, PWM comparator, combinational logic computing module, synchronous rectification driving circuit, overheating protection circuit, circuit overcurrent protection; Band-gap reference and biasing circuit are connected with power management module, error amplifier circuit, PWM comparator respectively; error amplifier circuit is connected with the slope compensation generator; the slope compensation generator is connected with the PWM comparator; the PWM comparator is connected with the combinational logic computing module; the combinational logic computing module is connected with synchronous rectification driving circuit; ring oscillator circuit is connected with the PWM comparator, and overheating protection circuit all is connected with the combinational logic computing module with circuit overcurrent protection.
The PWM controller is connected with the error amplifier circuit of led drive circuit.
Microcontroller is 8 a microcontroller.
AD converter is 10 a AD converter, adopts the segma-delta structure.
Band-gap reference and biasing circuit temperature coefficient are 10 ppm.
Except that the described technical characterictic of specification, be the known technology of those skilled in the art.
Claims (5)
1.LED the SOC illumination supervision chip of lamp comprises the SOC chip, it is characterized in that being integrated with on the SOC chip microcontroller, AD converter, PWM controller and led drive circuit; Microcontroller connects AD converter, and AD converter connects the PWM controller, and the PWM controller connects led drive circuit; Led drive circuit comprises power management module, band-gap reference and biasing circuit, ring oscillator circuit, error amplifier circuit, slope compensation generator, PWM comparator, combinational logic computing module, synchronous rectification driving circuit, overheating protection circuit, circuit overcurrent protection; Band-gap reference and biasing circuit are connected with power management module, error amplifier circuit, PWM comparator respectively; error amplifier circuit is connected with the slope compensation generator; the slope compensation generator is connected with the PWM comparator; the PWM comparator is connected with the combinational logic computing module; the combinational logic computing module is connected with synchronous rectification driving circuit; ring oscillator circuit is connected with the PWM comparator, and overheating protection circuit all is connected with the combinational logic computing module with circuit overcurrent protection.
2. the SOC illumination supervision chip of LED lamp according to claim 1 is characterized in that the PWM controller is connected with the error amplifier circuit of led drive circuit.
3. the SOC illumination supervision chip of LED lamp according to claim 1 is characterized in that microcontroller is 8 a microcontroller.
4. the SOC illumination supervision chip of LED lamp according to claim 1 is characterized in that AD converter is 10 a AD converter, adopts the segma-delta structure.
5. the SOC illumination supervision chip of LED lamp according to claim 1 is characterized in that band-gap reference and biasing circuit temperature coefficient are 10 ppm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202273402U CN201523472U (en) | 2009-09-25 | 2009-09-25 | SOC lighting management chip of LED lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202273402U CN201523472U (en) | 2009-09-25 | 2009-09-25 | SOC lighting management chip of LED lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201523472U true CN201523472U (en) | 2010-07-07 |
Family
ID=42509648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202273402U Expired - Fee Related CN201523472U (en) | 2009-09-25 | 2009-09-25 | SOC lighting management chip of LED lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201523472U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102264181A (en) * | 2011-07-11 | 2011-11-30 | 苏州辰戈电子有限公司 | Multi-path LED (Light Emitting Diode) controlling and driving system |
| CN107635322A (en) * | 2017-10-27 | 2018-01-26 | 国网山东省电力公司商河县供电公司 | A kind of Dimmable LED constant-current drive circuit |
-
2009
- 2009-09-25 CN CN2009202273402U patent/CN201523472U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102264181A (en) * | 2011-07-11 | 2011-11-30 | 苏州辰戈电子有限公司 | Multi-path LED (Light Emitting Diode) controlling and driving system |
| CN107635322A (en) * | 2017-10-27 | 2018-01-26 | 国网山东省电力公司商河县供电公司 | A kind of Dimmable LED constant-current drive circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101389168B (en) | High-voltage large power LCD constant current driving device | |
| CN202005042U (en) | Novel light-emitting diode (LED) drive circuit with high power factor | |
| CN102404895A (en) | Illumination control system utilizing microcontroller and illumination control method | |
| CN103889122A (en) | Control system for solar street lamp | |
| CN103354685A (en) | LED driving chip | |
| CN201523472U (en) | SOC lighting management chip of LED lamp | |
| CN108633136B (en) | Highly integrated LED driving package | |
| CN202713751U (en) | LED energy saving lamp integrated module | |
| CN206433224U (en) | Extra exit lighting circuit | |
| CN205489762U (en) | Simple and practical's portable power source | |
| Tong et al. | A dual mode dimming white LED driver based on Buck DC-DC converter | |
| CN202634794U (en) | Automobile dimming LED reading lamp | |
| CN105937746A (en) | Solar streetlamp | |
| Jha et al. | Smart solar hybrid LED streetlight | |
| CN202435648U (en) | Electrodeless dimming switch based on LED illumination | |
| CN204442759U (en) | Based on the LED lights of Internet of Things | |
| CN204190985U (en) | A kind of high voltage and constant current LED light source | |
| CN206237636U (en) | A kind of solar street lamp controller | |
| CN201965888U (en) | LED (Light Emitting Diode) screen driving device | |
| CN102781136A (en) | LED (Light-emitting diode) energy-saving lamp integration module | |
| CN204068712U (en) | There is the pwm power Switching Power Supply that former limit controls high precision constant current | |
| CN203378104U (en) | Light modulation circuit | |
| CN202617439U (en) | LED constant current driving circuit | |
| CN204104181U (en) | Plate carries constant current surface mount type LED fluorescent lamp | |
| CN203231229U (en) | All-weather solar street lamp |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100707 Termination date: 20130925 |