CN108345340A - A kind of program-controlled high-precision low noise OLED screen power generating devices - Google Patents
A kind of program-controlled high-precision low noise OLED screen power generating devices Download PDFInfo
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- CN108345340A CN108345340A CN201810258745.6A CN201810258745A CN108345340A CN 108345340 A CN108345340 A CN 108345340A CN 201810258745 A CN201810258745 A CN 201810258745A CN 108345340 A CN108345340 A CN 108345340A
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- field effect
- effect transistor
- metal
- half field
- connect
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- 230000005669 field effect Effects 0.000 claims abstract description 33
- 229910044991 metal oxide Inorganic materials 0.000 claims abstract description 31
- 150000004706 metal oxides Chemical class 0.000 claims abstract description 31
- 238000006243 chemical reaction Methods 0.000 claims abstract description 26
- 238000004891 communication Methods 0.000 claims description 10
- 208000033707 Early-onset X-linked optic atrophy Diseases 0.000 claims description 8
- 208000025019 optic atrophy 2 Diseases 0.000 claims description 8
- 101100067427 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) FUS3 gene Proteins 0.000 claims description 5
- 101100015484 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) GPA1 gene Proteins 0.000 claims description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 2
- 239000010931 gold Substances 0.000 claims description 2
- 229910052737 gold Inorganic materials 0.000 claims description 2
- 229910052760 oxygen Inorganic materials 0.000 claims description 2
- 239000001301 oxygen Substances 0.000 claims description 2
- 230000005611 electricity Effects 0.000 description 4
- 230000003321 amplification Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 229920001621 AMOLED Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
- G05F1/56—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices
- G05F1/561—Voltage to current converters
Abstract
A kind of program-controlled high-precision low noise OLED screen power generating devices, including microcontroller, microcontroller connect the first connector；Microcontroller connects the first analog-to-digital conversion module, and the first analog-to-digital conversion module connects DC to DC module, and DC to DC module connects the first metal-oxide half field effect transistor, and the first metal-oxide half field effect transistor connects the second metal-oxide half field effect transistor；Second the first output end of metal-oxide half field effect transistor connects the second connector, and second output terminal connects analog-to-digital conversion module, and third output end connects the second amplifier, and the second connector connects the second amplifier；Microcontroller connects the second analog-to-digital conversion module, and the output of the second analog-to-digital conversion module is divided into two-way, connects the first amplifier all the way, another way connects third metal-oxide half field effect transistor, and the first amplifier connects the first metal-oxide half field effect transistor, and the second amplifier connects the first amplifier；Microcontroller connects DC to DC module, and DC to DC module connects power input.
Description
Technical field
The invention belongs to photoelectric fields, and in particular to a kind of OLED screen power generating devices, more particularly to it is a kind of program-controlled
High-precision, low noise, versatile OLED screen power generating devices.
Background technology
Organic Light Emitting Diode（Organic Light-Emitting Diode, OLED）Also known as organic electric laser is aobvious
Show, organic luminous semiconductor.Deng Qingyun is taught by Chinese descendant in America（Ching W. Tang）It was found in the lab in 1979.
OLED display technologies have many advantages, such as self-luminous, wide viewing angle, almost infinite high contrast, compared with low power consumption, high reaction speed
And it is widely used in display area.
Existing OLED screen driving power generating means are substantially based on integrated form power supply IC, are difficult on output-index
Reach higher output accuracy, output current and relatively low output noise, realizes that output voltage adjustment is also relatively difficult, it is difficult to suitable
The OLED screen of different model is answered, and then needs to use high-precision, the low noise for capableing of a wide range of pressure regulation in OLED screen detection device
Sound power generating devices.
In consideration of it, in order to solve this problem, proposing that a kind of program-controlled high-precision low noise OLED screen power supply generates dress
It is the project of the invention to be studied to set.
Invention content
The present invention provides a kind of program-controlled high-precision low noise OLED screen power generating devices, and its purpose is to solve
The prior art is difficult to reach higher output accuracy, output current and relatively low output noise on output-index, realizes output
Voltage adjusts also relatively difficult and poor versatility problem.
In order to achieve the above objectives, the technical solution adopted by the present invention is：A kind of program-controlled high-precision low noise OLED screen
Power generating devices, including a microcontroller, the microcontroller connect one first connector by serial communication end, are used for and outside master
Machine communicates；
First I of the microcontroller2C communication terminals connect the input terminal of the first analog-to-digital conversion module, the first analog-to-digital conversion mould
The output end of block connects the first input end for the DC Module that circulates always, the output end connection first of the DC to DC module
The output end of the first input end of metal-oxide half field effect transistor, first metal-oxide half field effect transistor connects the second MOS field
Imitate the first input end of transistor；First output end of second metal-oxide half field effect transistor is as power supply output connection one the
The input terminal of two connectors, second output terminal connect the first input end of a second operational amplifier, second connector
Output end connects the second input terminal of second operational amplifier；
2nd I of the microcontroller2C communication terminals connect the input terminal of the second analog-to-digital conversion module, the second analog-to-digital conversion mould
The output end of block is divided into two-way, connects the first input end of one first operational amplifier all the way, first operational amplifier
Output end connects the second input terminal of first metal-oxide half field effect transistor, the output end connection of the second operational amplifier
Second input terminal of the first operational amplifier；
First input/output terminal of the microcontroller connects the second input terminal of the DC to DC module, and the direct current turns straight
The third input terminal of flow module connects power input；
Second input/output terminal of the microcontroller is divided into two-way, and the first via connects the input of third metal-oxide half field effect transistor
End, the second tunnel connect the second input terminal of the second metal-oxide half field effect transistor.
Related content in above-mentioned technical proposal is explained as follows：
1, in said program, the universal asynchronous receiving-transmitting transmitter that the microcontroller is externally communicated by one is bi-directionally connected described first
Connector.
2, in said program, the source electrode of second metal-oxide half field effect transistor and third metal-oxide half field effect transistor connects
Ground.
3, in said program, the analog-to-digital conversion leads ends of the microcontroller connect the first input of an analog-to-digital conversion module
End, the third output end of second metal-oxide half field effect transistor connect the second input terminal of an analog-to-digital conversion module.
4, in said program, although in the application being a kind of program-controlled high-precision low noise OLED screen power supply generation dress
It sets, in fact can also be that AMOLED screens generate power supply.
Since above-mentioned technical proposal is used, the present invention has following advantages compared with prior art：
The present invention compared with the prior art, voltage output precision height, high resolution, noise bottom, be provided simultaneously with proximal end voltage compensation and
The ability of distal end voltage compensation.
Description of the drawings
Attached drawing 1 is the circuit block diagram of the present embodiment OLED screen power generating devices.
Specific implementation mode
The invention will be further described with reference to the accompanying drawings and embodiments：
Embodiment：A kind of program-controlled high-precision low noise OLED screen power generating devices
Referring to attached drawing 1, including a microcontroller MUC, the universal asynchronous receiving-transmitting transmitter that microcontroller MUC is externally communicated by one
UART is bi-directionally connected one first connector CON1, for being communicated with external host.
The first I of the microcontroller MUC2The input terminal of the first analog-to-digital conversion module DAC1 of C communication terminals connection, described first
The output end of analog-to-digital conversion module DAC1 connects the first input end of circulation DC Module DC/DC always, the DC to DC
The output end of module DC/DC connects the first input end of the first metal-oxide half field effect transistor MOSFET1, first MOS field
The output end for imitating transistor MOSFET1 connects the first input end of the second metal-oxide half field effect transistor MOSFET2；Second gold medal
The first output end of oxygen half field effect transistor MOSFET2 exports the input terminal of one second connector CON2 of connection as power supply, the
Two output ends connect the first input end of a second operational amplifier OPA2, the output end connection the of the second connector CON2
The second input terminal of two operational amplifier OPA2.
The 2nd I of the microcontroller MUC2The input terminal of the second analog-to-digital conversion module DAC2 of C communication terminals connection, described second
The output end of analog-to-digital conversion module DAC2 is divided into two-way, connects the first input end of one first operational amplifier OPA1, institute all the way
The output end for stating the first operational amplifier OPA1 connects the second input terminal of the first metal-oxide half field effect transistor MOSFET1,
The output end of the second operational amplifier OPA2 connects the first input end of the first operational amplifier OPA1.
Wherein, the first operational amplifier OPA1 plays amplification, and second operational amplifier OPA2 plays compensating action.
The first input and output pin of the microcontroller MUC connects the second input of the DC to DC module DC/DC
End, the third input terminal connection power input POWER IN of the DC to DC module DC/DC.
The second input and output pin of the microcontroller MUC is divided into two-way, and the first via connects third OH crystal
The input terminal of pipe MOSFET3, the second tunnel connect the second input terminal of the second metal-oxide half field effect transistor MOSFET2.Wherein, described
The source grounding of second metal-oxide half field effect transistor MOSFET2 and third metal-oxide half field effect transistor MOSFET3.
The analog-to-digital conversion leads ends of the microcontroller MUC connect the first input end of an analog-to-digital conversion module ADC, and described the
The third output end of two metal-oxide half field effect transistor MOSFET2 connects the second input terminal of the analog-to-digital conversion module ADC.
In the present embodiment, MCU is opened to the ports UART all the way and realizes that externally communication, host can pass through this port controlling electricity
In addition the output voltage and power-on and power-off sequential in source are opened to the output voltage that the 2 road ports I2C are respectively used to configuration DC/DC power supplys
With the output voltage of MOSFET1.
DAC1 exports the output voltage that program-controlled voltage all the way is used to adjust DC/DC, and the output voltage of DC/DC is for being
MOSFET1 powers, and the power attenuation on MOSFET1 can effectively be preferably minimized for improving power supply output by this design
Power.
DAC2 output all the way program-controlled voltage be given to OPA1 for indirectly adjustment MOSFET1 output voltage, wherein OPA1
Realize that the function of linear power supply error amplifier, MOSFET1 realize the function of linear power supply adjustment pipe, the line of MOSFET1 outputs
Property power supply directly exported after by MOSFET2, wherein MOSFET2 and MOSFET3 are respectively used to realize output electric discharge and open
Powered-down function.
When the ON/OFF signals of MCU outputs drag down, MOSFET2 conductings, MOSFET3 conductings, MOSFET1 output voltages will
For 0V, when ON/OFF signals are drawn high, MOSFET2 cut-offs, MOSFET3 cut-offs, MOSFET1 normal output voltages, OPA2 are used for
Proximally and distally output voltage compensation, ADC are sampled and are calibrated for output voltage.
The present embodiment uses the framework of MCU+DC/DC+DAC+OPA+MOSFET to realize on hardware, and MCU is realized pair
Outer communication, output voltage configuration and power-on and power-off timing control, DC/DC realize decompression for the first time for being powered for MOSFET to reduce
Power attenuation on MOSFET, DAC realize the adjustment of output voltage, and OPA+MOSFET realizes the power amplification of out-put supply and remote
Terminal voltage compensates, and uses high-precision 16bit DAC in material type selecting first for adjusting out-put supply with high-resolution
Voltage value, while being equipped with that ± 0.02 ﹪, 2ppm/ DEG C of high-precision, extremely low temperature drift reference voltage source is ensureing output voltage
Precision can reach the output voltage precision of ± 1mV, then use precision operational-amplifier and high power after the calibration
MOSFET is used to amplify the output voltage of out-put supply with set gain and improves output current, while distal end electricity may be implemented
Press the function of compensation.
The present embodiment has the beneficial effect that：The defeated of all driving powers of OLED screen can be controlled by the ports UART all the way
Go out voltage value and power-on and power-off sequential；Use 2 road DAC adjust separately the output voltage of DC/DC electric power output voltages and MOSFET with
Reduce the power attenuation on MOSFET；The present apparatus is set to be provided simultaneously with proximal end voltage compensation and distal end electricity in such a way that OPA is followed
The ability for pressing compensation, without switching；Realize that the high-accuracy voltage of the present apparatus is defeated using 16bit DAC and precision OPA+MOSFET
Go out；5 ppm/ DEG C of Low Drift Temperature power supply outputs of the present apparatus are realized using extremely low temperature drift reference source and Low Drift Temperature gain resistor；Using
16bit ADC acquisition output voltages are calibrated for realizing output voltage to improve present apparatus voltage output precision；Using MOSFET
The mode of electric discharge ensures out-put supply noresidue charge when powered-down；Present apparatus output electricity is controlled by the way of switch mosfet
The switch in source.
The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow person skilled in the art
Scholar cans understand the content of the present invention and implement it accordingly, and it is not intended to limit the scope of the present invention.It is all according to the present invention
Equivalent change or modification made by Spirit Essence, should be covered by the protection scope of the present invention.
Claims (4)
1. a kind of program-controlled high-precision low noise OLED screen power generating devices, it is characterised in that：Including a microcontroller
（MUC）, the microcontroller（MUC）One first connector is connected by serial communication end（CON1）, for being communicated with external host；
The microcontroller（MUC）The first I2C communication terminals connect the first analog-to-digital conversion module（DAC1）Input terminal, described first
Analog-to-digital conversion module（DAC1）Output end connection circulate always DC Module（DC/DC）First input end, the direct current turn
DC Module（DC/DC）Output end connect the first metal-oxide half field effect transistor（MOSFET1）First input end, described first
Metal-oxide half field effect transistor（MOSFET1）Output end connect the second metal-oxide half field effect transistor（MOSFET2）First input
End；Second metal-oxide half field effect transistor（MOSFET2）The first output end as power supply export connection one second connector
（CON2）Input terminal, second output terminal connect a second operational amplifier（OPA2）First input end, it is described second connection
Device（CON2）Output end connect second operational amplifier（OPA2）The second input terminal；
The microcontroller（MUC）The 2nd I2C communication terminals connect the second analog-to-digital conversion module（DAC2）Input terminal, described second
Analog-to-digital conversion module（DAC2）Output end be divided into two-way, all the way connect one first operational amplifier（OPA1）First input
End, first operational amplifier（OPA1）Output end connect first metal-oxide half field effect transistor（MOSFET1）
Two input terminals, the second operational amplifier（OPA2）Output end connect the first operational amplifier（OPA1）Second input
End；
The microcontroller（MUC）The first input/output terminal connect the DC to DC module（DC/DC）The second input terminal,
The DC to DC module（DC/DC）Third input terminal connect power input（POWER IN）；
The microcontroller（MUC）The second input/output terminal be divided into two-way, the first via connects third metal-oxide half field effect transistor
（MOSFET3）Input terminal, the second tunnel connect the second metal-oxide half field effect transistor（MOSFET2）The second input terminal.
2. program-controlled high-precision low noise OLED screen power generating devices according to claim 1, it is characterised in that：Institute
State microcontroller（MUC）The universal asynchronous receiving-transmitting transmitter externally communicated by one（UART）It is bi-directionally connected first connector
（CON1）.
3. program-controlled high-precision low noise OLED screen power generating devices according to claim 1, it is characterised in that：Institute
State the second metal-oxide half field effect transistor（MOSFET2）With third metal-oxide half field effect transistor（MOSFET3）Source electrode ground connection.
4. program-controlled high-precision low noise OLED screen power generating devices according to claim 1, it is characterised in that：Institute
State microcontroller（MUC）Analog-to-digital conversion leads ends connect an analog-to-digital conversion module（ADC）First input end, the second gold medal oxygen
Half field effect transistor（MOSFET2）Third output end connect the analog-to-digital conversion module（ADC）The second input terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810258745.6A CN108345340B (en) | 2018-03-27 | 2018-03-27 | Programmable high-precision low-noise OLED screen power supply generating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810258745.6A CN108345340B (en) | 2018-03-27 | 2018-03-27 | Programmable high-precision low-noise OLED screen power supply generating device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108345340A true CN108345340A (en) | 2018-07-31 |
| CN108345340B CN108345340B (en) | 2023-12-15 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030107440A1 (en) * | 2001-12-11 | 2003-06-12 | Osamu Miki | Power supply system for a high frequency power amplifier |
| US20090160418A1 (en) * | 2007-12-19 | 2009-06-25 | Oki Semiconductor Co., Ltd. | Dc-dc converter |
| US20100201332A1 (en) * | 2007-04-10 | 2010-08-12 | Thien Le | Voltage regulator circuitry with adaptive compensation |
| CN101949962A (en) * | 2010-05-27 | 2011-01-19 | 东莞市锐源仪器有限公司 | Programmable electronic load |
| CN208188711U (en) * | 2018-03-27 | 2018-12-04 | 苏州佳智彩光电科技有限公司 | A kind of program-controlled high-precision low noise OLED screen power generating devices |
-
2018
- 2018-03-27 CN CN201810258745.6A patent/CN108345340B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030107440A1 (en) * | 2001-12-11 | 2003-06-12 | Osamu Miki | Power supply system for a high frequency power amplifier |
| US20100201332A1 (en) * | 2007-04-10 | 2010-08-12 | Thien Le | Voltage regulator circuitry with adaptive compensation |
| US20090160418A1 (en) * | 2007-12-19 | 2009-06-25 | Oki Semiconductor Co., Ltd. | Dc-dc converter |
| CN101949962A (en) * | 2010-05-27 | 2011-01-19 | 东莞市锐源仪器有限公司 | Programmable electronic load |
| CN208188711U (en) * | 2018-03-27 | 2018-12-04 | 苏州佳智彩光电科技有限公司 | A kind of program-controlled high-precision low noise OLED screen power generating devices |
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| Publication number | Publication date |
|---|---|
| CN108345340B (en) | 2023-12-15 |
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