CN208028769U - High frequency switch power with real-time voltage electric current display function - Google Patents
High frequency switch power with real-time voltage electric current display function Download PDFInfo
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- CN208028769U CN208028769U CN201721718979.1U CN201721718979U CN208028769U CN 208028769 U CN208028769 U CN 208028769U CN 201721718979 U CN201721718979 U CN 201721718979U CN 208028769 U CN208028769 U CN 208028769U
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Abstract
The utility model discloses the high frequency switch powers with real-time voltage electric current display function, are provided with PWM controller, power conversion system, rear class current rectifying, output circuit and Current Voltage protection system；It is provided with reference signal circuit in Current Voltage protection system, voltage stabilization and current stabilization selection circuit, current feedback circuit, current-limiting circuit and current display circuit, output circuit connects current feedback circuit, current feedback circuit connects voltage stabilization and current stabilization selection circuit, voltage stabilization and current stabilization selection circuit is connected with PWM controller, reference signal circuit connects voltage stabilization and current stabilization selection circuit, current display circuit is connected with current feedback circuit, current feedback circuit connects current-limiting circuit, current-limiting circuit connects PWM controller, current display circuit is set in Current Voltage protection system, output current value can be shown in real time, so as to user can real-time awareness for DC power supply current value whether in allowed limits.
Description
Technical field
The utility model is related to the fields such as power technology, PWM technologies, are that band real-time voltage electric current shows work(specifically
The high frequency switch power of energy.
Background technology
Power supply is the device that power is provided to electronic equipment, also referred to as power supply unit, it provides all components in computer
Required electric energy.Whether the size of power, electric current and voltage are stablized, and by the working performance for directly affecting computer and make
Use the service life.
Switching Power Supply is to utilize modern power electronics technology, and the time ratio that control switching tube turns on and off remains steady
Determine a kind of power supply of output voltage, Switching Power Supply is generally modulated by pulse width（PWM）IC and MOSFET is controlled to constitute.With electricity
The development and innovation of power electronic technology so that switch power technology is also innovated constantly.Currently, Switching Power Supply is with small-sized, light
Amount and efficient feature are widely used almost all of electronic equipment, are that current electronics and information industry rapid development is indispensable
A kind of few power mode.
Switching Power Supply product is widely used in industrial automatic control, military industry equipment, research equipment, LED illumination, industry control are set
Standby, communication apparatus, power equipment, instrument and meter, Medical Devices, semiconductor refrigerating heating, air purifier, electronic refrigerator, liquid
Crystal display, LED lamp, communication apparatus, audio-visual products, safety monitoring, LED light bag, computer housing, digital product and instrument class
Equal fields.
Pulse width is modulated（PWM）It is non-come the one kind controlled analog circuit using the numeral output of microprocessor
Normal effective technology is widely used in from measurement, communicates into many fields of power control and transformation.
Pulse width modulation is a kind of analog control mode, according to the variation of respective loads come modulation transistor base stage or
The biasing of metal-oxide-semiconductor grid, to realize the change of transistor or metal-oxide-semiconductor turn-on time, to realize switching power supply output
Change.This mode can be such that the output voltage of power supply is kept constant in operation conditions change, be the number using microprocessor
A kind of very effective technology that signal controls analog circuit.
PWM control technologies are simple with its control, flexibly and the good advantage of dynamic response and to become power electronic technique most wide
The control mode of general application and the hot spot of people's research.Since the development of current science and technology is without between subject
Boundary, in conjunction with modern control theory thought or realize that resonance free wave switching technique will become the master that PWM control technologies develop
Want one of direction.It changes according to respective loads come the biasing of modulation transistor base stage or metal-oxide-semiconductor grid, to realize transistor
Or the change of metal-oxide-semiconductor turn-on time, to realize the change of switching power supply output.This mode can make the output electricity of power supply
Kept constant when being pressed in operation conditions change, be using microprocessor digital signal to analog circuit controlled one kind it is non-
Normal effective technology.
With the development of electronic technology, there are a variety of PWM technologies, including：Phase voltage controls PWM, pulsewidth PWM
Method, random PWM, SPWM methods, line voltage control PWM etc., and the pulsewidth PWM methods used in nickel-hydrogen battery smart charger, it
It is spike train that each pulse width is equal as PWM waveform, the period by changing spike train can change arteries and veins with frequency modulation
The width or duty ratio of punching can be such that voltage changes with frequency coordination with pressure regulation using suitable control method.Tune can be passed through
The period of whole PWM, the duty ratio of PWM and achieve the purpose that control charging current.
Pulsewidth modulation（PWM）Basic principle：Control mode is exactly to control the break-make of inverter circuit switching device, is made
Output end obtains a series of equal pulse of amplitudes, and sine wave or required waveform are replaced with these pulses.Namely exist
Multiple pulses are generated in the half period of output waveform, it is sinusoidal waveform to make the equal threshold voltages of each pulse, and the output obtained is flat
Sliding and low-order harmonic is few.The width of each pulse is modulated by certain rule, you can change inverter circuit output voltage
Output frequency also can be changed in size.
Utility model content
The purpose of this utility model is to provide the high frequency switch powers with real-time voltage electric current display function, defeated in power supply
Current Voltage of the setting with defencive function protects system in outlet, can work as in the case of there is output overcurrent or/and overvoltage,
Carry out automatic protection so that output current or voltage in allowed limits, avoid causing electricity to be powered due to overcurrent or overvoltage
The case where road is burned out, while current display circuit is set in Current Voltage protection system, it can show in real time defeated
Go out current value, so as to user can real-time awareness for DC power supply current value whether in allowed limits, have set
Count the features such as reasonable, easy to use.
The utility model is achieved through the following technical solutions：High frequency switch power with real-time voltage electric current display function,
It is provided with PWM controller, power conversion system, rear class current rectifying, output circuit and Current Voltage protection system, it is described
PWM controller connects power conversion system, and power conversion system connects rear class current rectifying, and rear class current rectifying connects
Output circuit is connect, output circuit connects Current Voltage and protects system；Reference signal electricity is provided in Current Voltage protection system
Road, voltage stabilization and current stabilization selection circuit, current feedback circuit, current-limiting circuit and current display circuit, the output circuit connect electric current
Feedback circuit, current feedback circuit connect voltage stabilization and current stabilization selection circuit, and voltage stabilization and current stabilization selection circuit is connected with PWM controller,
Reference signal circuit connects voltage stabilization and current stabilization selection circuit, and current display circuit is connected with current feedback circuit, current feedback electricity
Road connects current-limiting circuit, and current-limiting circuit connects PWM controller.
Further is that the utility model is better achieved, and especially uses following setting structures：It is protected in the Current Voltage
Voltage feedback circuit, pressure limiting circuit and voltage display circuit are additionally provided in protecting system, the output circuit connects Voltage Feedback
Circuit, voltage feedback circuit connect voltage stabilization and current stabilization selection circuit, and voltage display circuit is connected with voltage feedback circuit, and voltage is anti-
Current feed circuit connects pressure limiting circuit, and pressure limiting circuit connects PWM controller.
Further is that the utility model is better achieved, and especially uses following setting structures：The power conversion system
It is inside provided with driving circuit, full-bridge converter and transformer circuit, PWM controller connects driving circuit, and driving circuit connection is complete
Bridging parallel operation, full-bridge converter connect transformer circuit, and transformer circuit connects rear class current rectifying.
Further is that the utility model is better achieved, and especially uses following setting structures：Further include and PWM controller
The thermal-shutdown circuit being connected, temperature sensor Simultaneous Monitoring driving circuit, the full-bridge converter of the thermal-shutdown circuit
And the temperature change of transformer circuit.
Further is that the utility model is better achieved, and especially uses following setting structures：It further include prime rectification filter
Wave circuit and prime protect circuit, the prime protection circuit to connect full-bridge converter by prime current rectifying and wave filtering circuit.
Further is that the utility model is better achieved, and especially uses following setting structures：It is filtered in the prime rectification
Auxiliary power circuit is also associated on wave circuit, and auxiliary power circuit is for being electrically connected PWM controller.
Further is that the utility model is better achieved, and especially uses following setting structures：It further include overvoltage/undervoltage protection
Circuit, the monitoring point of the over under-voltage protection circuit are connected to the output end of prime current rectifying and wave filtering circuit, and overvoltage/undervoltage protection electricity
Road is connected with PWM controller.
Further is that the utility model is better achieved, and especially uses following setting structures：The prime protects circuit
Including lightning prevention circuit, surge restraint circuit and power-supply filter, the lightning prevention circuit connects surge restraint circuit, surge suppression
Circuit processed connects power-supply filter, and power-supply filter is connected with the input terminal of prime current rectifying and wave filtering circuit.
The utility model compared with prior art, has the following advantages and advantageous effect：
The Current Voltage protection system with defencive function is arranged in the utility model on power output end, can be when appearance
In the case of output overcurrent or/and overvoltage, automatic protection is carried out so that output current or voltage in allowed limits, avoid
The case where causing circuit to be powered to be burned out due to overcurrent or overvoltage, while electric current is set in Current Voltage protection system
Display circuit can show output current value in real time, so as to user can real-time awareness for DC power supply current value
Whether in allowed limits, has the characteristics that reasonable design, easy to use.
Various protection circuits set by the utility model can be by the duty ratio of change PWM controller, to reach
To the purpose for changing output voltage.
The thermal-shutdown circuit of the utility model setting can work as driving circuit or/and full-bridge converter or/and transformer
When temperature anomaly occurs in circuit, overheat protector is carried out so that the duty ratio of PWM controller becomes smaller, so that entire power supply
Output reduces, and revert in the range of permission.
The voltage display circuit that the utility model is arranged in Current Voltage protection system can show output electricity in real time
Pressure value, so as to user can real-time awareness for DC power supply electric current pressure value whether in allowed limits.
The utility model individually directly takes electricity using an auxiliary power circuit and is converted out of prime current rectifying and wave filtering circuit
For the required working power of PWM controller, the working power of PWM controller can be avoided to be influenced by output circuit so that
PWM controller can be steady in a long-term work, improve the work validity of entire power supply.
Surge restraint circuit set by the utility model can effectively inhibit the surge voltage in alternating current, avoid wave
Voltage is gushed to damage entire circuit.
The utility model is designed using various kinds of protective circuit, can all can when there is overvoltage, overcurrent or under-voltage condition
Enough stable operations have the features such as the operation is stable, safe to use.
Description of the drawings
Fig. 1 is the utility model principle block diagram.
Specific implementation mode
The utility model is described in further detail with reference to embodiment, but the embodiment of the utility model is not
It is limited to this.
Embodiment 1：
High frequency switch power with real-time voltage electric current display function is arranged on power output end with defencive function
Current Voltage protects system, can carry out automatic protection in the case of there is output overcurrent or/and overvoltage so that output electricity
Stream or voltage in allowed limits, the case where avoiding causing circuit to be powered to be burned out due to overcurrent or overvoltage, simultaneously
Current display circuit is set in Current Voltage protection system, can show output current value in real time, so that user can
Real-time awareness for DC power supply current value whether in allowed limits, have the characteristics that reasonable design, easy to use, such as
Shown in Fig. 1, following setting structures are especially used：It is provided with PWM controller, power conversion system, rear class current rectifying, defeated
Go out circuit and Current Voltage protection system, the PWM controller connect power conversion system, it is whole that power conversion system connects rear class
Filter circuit is flowed, rear class current rectifying connects output circuit, and output circuit connects Current Voltage and protects system；In electric current electricity
It is aobvious it to be provided with reference signal circuit, voltage stabilization and current stabilization selection circuit, current feedback circuit, current-limiting circuit and electric current in pressure protection system
Show that circuit, the output circuit connect current feedback circuit, current feedback circuit connects voltage stabilization and current stabilization selection circuit, voltage stabilization and current stabilization
Selection circuit is connected with PWM controller, and reference signal circuit connects voltage stabilization and current stabilization selection circuit, current display circuit and electric current
Feedback circuit is connected, and current feedback circuit connects current-limiting circuit, and current-limiting circuit connects PWM controller.
The rear class current rectifying carries out rectification to the voltage of preposition input and is filtered, and it is most to obtain ripple voltage
The direct current output that may lack then passes through the D.C. regulated power supply needed for output circuit output；Acquisition is set on output circuit
Point, and the current value of acquisition and/or voltage value are transmitted on current feedback circuit or/and voltage feedback circuit, current feedback
Circuit and voltage feedback circuit will be delivered to current-limiting circuit and pressure limiting circuit respectively all the way, be delivered to voltage stabilization and current stabilization selection electricity all the way
Road, the voltage regulation signal value and current stabilization signal value that voltage stabilization and current stabilization selection circuit combination reference signal circuit is provided are to convey signal
Into PWM controller, PWM controller will drive corresponding current-limiting circuit or pressure limiting circuit to work, when further the two works,
The duty ratio of PWM controller will be adjusted, the final voltage for realizing output or/and electric current in allowed limits, avoid
Output voltage or/and electric current are excessively high and damage circuit to be powered or damage the high frequency switch power itself.
Embodiment 2：
The present embodiment is further optimized based on the above embodiments, as shown in Figure 1, further is preferably real
Existing the utility model, especially uses following setting structures：Voltage Feedback electricity is additionally provided in the Current Voltage protection system
Road, pressure limiting circuit and voltage display circuit, the output circuit connect voltage feedback circuit, and it is steady that voltage feedback circuit connects voltage stabilizing
Stream select circuit, voltage display circuit are connected with voltage feedback circuit, and voltage feedback circuit connects pressure limiting circuit, pressure limiting circuit
PWM controller is connected, the voltage display circuit being arranged in Current Voltage protection system can show output voltage in real time
Value, so as to user can real-time awareness for DC power supply voltage value whether in allowed limits.
Embodiment 3：
The present embodiment is to advanced optimize based on any of the above embodiments, as shown in Figure 1, further is more preferable
The utility model is realized on ground, especially uses following setting structures：Driving circuit is provided in the power conversion system, full-bridge becomes
Parallel operation and transformer circuit, PWM controller connect driving circuit, and driving circuit connects full-bridge converter, full-bridge converter connection
Transformer circuit, transformer circuit connect rear class current rectifying.
In design in use, the prime current rectifying and wave filtering circuit, when alternating current will pass through after power-supply filter is handled
It the rectification of prime rectifier filter and is filtered, then obtains ripple voltage direct current output as few as possible, then utilize full-bridge
The energy of DC power supply is converted to the signal power needed for load by converter, and full-bridge converter at work, passes through drive
Dynamic circuit is driven, and realizes the conversion of power；The transformer circuit, is built using high frequency transformer, can be damaged as far as possible
It consumes small passing through and carries out rectification post filtering processing in the transformed power delivery to rear class current rectifying of energy, obtain line
Wave voltage direct current output as few as possible then passes through the D.C. regulated power supply needed for output circuit output；On output circuit
Collection point is set, and the current value of acquisition and/or voltage value are transmitted on current feedback circuit or/and voltage feedback circuit,
Current feedback circuit and voltage feedback circuit will be delivered to current-limiting circuit and pressure limiting circuit respectively all the way, and it is steady to be delivered to voltage stabilizing all the way
Stream select circuit, voltage regulation signal value and current stabilization signal value that voltage stabilization and current stabilization selection circuit combination reference signal circuit is provided to
It conveying in signal to PWM controller, PWM controller will drive corresponding current-limiting circuit or pressure limiting circuit to work, and further two
When person works, the duty ratio of PWM controller will be adjusted, model of the voltage or/and electric current that final realization exports in permission
In enclosing, avoid output voltage or/and electric current excessively high and damage circuit to be powered or damage the high frequency switch power itself.
Embodiment 4：
The present embodiment is to advanced optimize based on any of the above embodiments, as shown in Figure 1, further is more preferable
The utility model is realized on ground, especially uses following setting structures：Further include the thermal-shutdown circuit being connected with PWM controller,
The temperature change of the temperature sensor Simultaneous Monitoring driving circuit, full-bridge converter and transformer circuit of the thermal-shutdown circuit
Change.
The thermal-shutdown circuit, in temperature sensor setting driving circuit, full-bridge converter and transformer electricity
In the installing zone on road, the temperature information in the region can be monitored, when there is temperature anomaly, overheat protector can be carried out,
So that the duty ratio of PWM controller becomes smaller, so that the output of entire power supply reduces, it revert in the range of permission.
Embodiment 5：
The present embodiment is to advanced optimize based on any of the above embodiments, as shown in Figure 1, further is more preferable
The utility model is realized on ground, especially uses following setting structures：Further include prime current rectifying and wave filtering circuit and prime protection circuit, institute
It states prime protection circuit and full-bridge converter is connected by prime current rectifying and wave filtering circuit.
The prime current rectifying and wave filtering circuit carries out the alternating current after prime protects processing of circuit at data and filtering
Reason obtains ripple voltage and less or the direct current of ripple-free voltage and is transmitted on power conversion system as far as possible.
Embodiment 6：
The present embodiment is to advanced optimize based on any of the above embodiments, as shown in Figure 1, further is more preferable
The utility model is realized on ground, especially uses following setting structures：Auxiliary electricity is also associated on the prime current rectifying and wave filtering circuit
Source circuit, and auxiliary power circuit individually uses an auxiliary power circuit directly from prime rectification for being electrically connected PWM controller
Take electricity in filter circuit and be converted to the required working power of PWM controller, can avoid the working power of PWM controller by
Output circuit is influenced so that the work that PWM controller can be steady in a long-term improves the work validity of entire power supply.
Embodiment 7：
The present embodiment is to advanced optimize based on any of the above embodiments, as shown in Figure 1, further is more preferable
The utility model is realized on ground, especially uses following setting structures：Further include over under-voltage protection circuit, the over under-voltage protection circuit
Monitoring point be connected to the output end of prime current rectifying and wave filtering circuit, and over under-voltage protection circuit is connected with PWM controller.
The over under-voltage protection circuit is acquired from prime current rectifying and wave filtering circuit, when appearance overvoltage or undervoltage condition
When, by outputs level signals to PWM controller, PWM controller will be off after receiving signal, and power supply will be without output.
Embodiment 8：
The present embodiment is to advanced optimize based on any of the above embodiments, as shown in Figure 1, further is more preferable
The utility model is realized on ground, especially uses following setting structures：The prime protection circuit includes lightning prevention circuit, Surge suppression
Circuit and power-supply filter, the lightning prevention circuit connect surge restraint circuit, and surge restraint circuit connects power-supply filter, electricity
Source filter is connected with the input terminal of prime current rectifying and wave filtering circuit.
The anti-lightning system, in thunderstorm weather, can be produced lightning stroke when alternating current is accessed by anti-lightning system
Raw high intensity transient voltage imports ground end, and entire power supply is avoided to be damaged；
The surge restraint circuit, when alternating current is in transmission, when the surge voltage in power grid is transferred on the circuit, energy
It is enough to remove various surge spikes so that the alternating current that sine wave state is only transmitted in circuit, to avoid Hou Xiang electricity
It route and is damaged in surge effect；
The power-supply filter can avoid the situation that out-put supply is unstable caused by electromagnetic interference from occurring.
The above is only the preferred embodiment of the utility model, not does limit in any form to the utility model
System, any simple modification made by the above technical examples according to the technical essence of the present invention, equivalent variations, each falls within
Within the scope of protection of the utility model.
Claims (8)
1. the high frequency switch power with real-time voltage electric current display function, it is characterised in that：It is provided with PWM controller, power becomes
It changes system, rear class current rectifying, output circuit and Current Voltage protection system, the PWM controller and connects power conversion
System, power conversion system connect rear class current rectifying, and rear class current rectifying connects output circuit, and output circuit connects
Connect Current Voltage protection system；Reference signal circuit, voltage stabilization and current stabilization selection circuit, electricity are provided in Current Voltage protection system
Current feedback circuit, current-limiting circuit and current display circuit, the output circuit connect current feedback circuit, and current feedback circuit connects
Voltage stabilization and current stabilization selection circuit is connect, voltage stabilization and current stabilization selection circuit is connected with PWM controller, and reference signal circuit connects voltage stabilization and current stabilization
Selection circuit, current display circuit are connected with current feedback circuit, and current feedback circuit connects current-limiting circuit, and current-limiting circuit connects
Connect PWM controller.
2. the high frequency switch power according to claim 1 with real-time voltage electric current display function, it is characterised in that：Institute
It states and is additionally provided with voltage feedback circuit, pressure limiting circuit and voltage display circuit, the output circuit in Current Voltage protection system
Voltage feedback circuit is connected, voltage feedback circuit connects voltage stabilization and current stabilization selection circuit, voltage display circuit and voltage feedback circuit
It is connected, voltage feedback circuit connects pressure limiting circuit, and pressure limiting circuit connects PWM controller.
3. the high frequency switch power according to claim 1 or 2 with real-time voltage electric current display function, it is characterised in that：
Driving circuit, full-bridge converter and transformer circuit, PWM controller connection driving electricity are provided in the power conversion system
Road, driving circuit connect full-bridge converter, and full-bridge converter connects transformer circuit, and transformer circuit connects rear class rectifying and wave-filtering
Circuit.
4. the high frequency switch power according to claim 3 with real-time voltage electric current display function, it is characterised in that：Also wrap
Include the thermal-shutdown circuit being connected with PWM controller, the temperature sensor Simultaneous Monitoring driving electricity of the thermal-shutdown circuit
Road, full-bridge converter and transformer circuit temperature change.
5. the high frequency switch power according to claim 4 with real-time voltage electric current display function, it is characterised in that：Also wrap
Prime current rectifying and wave filtering circuit and prime protection circuit are included, the prime protection circuit connects full-bridge by prime current rectifying and wave filtering circuit
Converter.
6. the high frequency switch power according to claim 5 with real-time voltage electric current display function, it is characterised in that：Institute
It states and is also associated with auxiliary power circuit on prime current rectifying and wave filtering circuit, and auxiliary power circuit is for being electrically connected PWM controller.
7. the high frequency switch power according to claim 5 or 6 with real-time voltage electric current display function, it is characterised in that：
Further include over under-voltage protection circuit, the monitoring point of the over under-voltage protection circuit is connected to the output of prime current rectifying and wave filtering circuit
End, and over under-voltage protection circuit is connected with PWM controller.
8. the high frequency switch power according to claim 5 or 6 with real-time voltage electric current display function, it is characterised in that：
The prime protection circuit includes lightning prevention circuit, surge restraint circuit and power-supply filter, the lightning prevention circuit connection wave
Suppression circuit is gushed, surge restraint circuit connects power-supply filter, the input terminal phase of power-supply filter and prime current rectifying and wave filtering circuit
Connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721718979.1U CN208028769U (en) | 2017-12-12 | 2017-12-12 | High frequency switch power with real-time voltage electric current display function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721718979.1U CN208028769U (en) | 2017-12-12 | 2017-12-12 | High frequency switch power with real-time voltage electric current display function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208028769U true CN208028769U (en) | 2018-10-30 |
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ID=63898600
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721718979.1U Active CN208028769U (en) | 2017-12-12 | 2017-12-12 | High frequency switch power with real-time voltage electric current display function |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107947551A (en) * | 2017-12-12 | 2018-04-20 | 成都爱特联科技有限公司 | High frequency switch power with real-time voltage electric current display function |
| CN111632270A (en) * | 2019-03-01 | 2020-09-08 | 上海库石医疗技术有限公司 | Human body electrotherapy device with safety protection function |
| CN114019853A (en) * | 2021-10-27 | 2022-02-08 | 广州祥驰电气有限公司 | Guide rail type 5G switch power supply |
| CN116403516A (en) * | 2023-06-05 | 2023-07-07 | 成都利普芯微电子有限公司 | Display driving method and display driving chip |
-
2017
- 2017-12-12 CN CN201721718979.1U patent/CN208028769U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107947551A (en) * | 2017-12-12 | 2018-04-20 | 成都爱特联科技有限公司 | High frequency switch power with real-time voltage electric current display function |
| CN111632270A (en) * | 2019-03-01 | 2020-09-08 | 上海库石医疗技术有限公司 | Human body electrotherapy device with safety protection function |
| CN114019853A (en) * | 2021-10-27 | 2022-02-08 | 广州祥驰电气有限公司 | Guide rail type 5G switch power supply |
| CN116403516A (en) * | 2023-06-05 | 2023-07-07 | 成都利普芯微电子有限公司 | Display driving method and display driving chip |
| CN116403516B (en) * | 2023-06-05 | 2023-08-22 | 成都利普芯微电子有限公司 | Display driving method and display driving chip |
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