CN207965718U - A kind of multifunctional power adapter - Google Patents
A kind of multifunctional power adapter Download PDFInfo
- Publication number
- CN207965718U CN207965718U CN201820501254.5U CN201820501254U CN207965718U CN 207965718 U CN207965718 U CN 207965718U CN 201820501254 U CN201820501254 U CN 201820501254U CN 207965718 U CN207965718 U CN 207965718U
- Authority
- CN
- China
- Prior art keywords
- current
- voltage
- processing units
- mcu processing
- output
- 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.)
- Active
Links
Landscapes
- Dc-Dc Converters (AREA)
Abstract
The utility model is related to power supply quasi-instrument instrumentations, it discloses a kind of multifunctional power adapters, decompression, constant current and the adjustable function of constant voltage/constant current are realized on the same device, reduce cost, and solve the constant-current source in traditional technology there are current regulations less efficient, the relatively low problem of precision.The power supply adaptor includes MCU processing units, DC DC converter units and output signal collecting unit；Output signal collecting unit includes current signal collecting unit, voltage signal acquisition unit and channel switching module；The output signal of the input terminal connection MCU processing units of DC DC converter units, the input terminal of output end connection the current signal collecting unit and voltage signal acquisition unit of DC DC converter units；The output end of current signal collecting unit and voltage signal acquisition unit is all connected with the input signal of MCU processing units, and the input signal of DC DC converter units is connected by channel switching module；Channel switching module is controlled by MCU processing units.
Description
Technical field
The utility model is related to power supply quasi-instrument instrumentations, and in particular to a kind of multifunctional power adapter.
Background technology
Constant pressure source and constant-current source are common components in daily circuit debugging, and constant pressure source is moved using Voltage Feedback
State adjusts power supply power supply state so that output voltage is constant；Constant-current source is supplied come dynamic regulation power supply using current feedback
Electricity condition so that constant output current.
Constant pressure source and constant-current source in currently available technology are independent device, have the following defects：
1) constant pressure source only has carries out buck or boost to input voltage, the function of then being exported with certain voltage constant pressure,
It cannot achieve constant current output；Constant-current source can realize constant current function, but output voltage is non-adjustable；
When user simultaneously need decompression, constant-current source, and module output voltage/current can timing, need to purchase a variety of
Equipment, it is of high cost.
2) current constant-current source mainly uses discrete device power MOS (Metal-Oxide Semiconductor field-effect transistor) to manage
It is realized with comparator, using Voltage Feedback, (current signal is converted into voltage signal to comparator inverting input, and substantially electric current is anti-
Feedback), comparator in-phase input end adjusts given reference voltage manually using potentiometer, and this method is the base based on linear power supply
Plinth design, it is less efficient that there are current regulations, the relatively low problem of precision.
Utility model content
The utility model proposes a kind of multifunctional power adapter, realize on the same device decompression, constant current and constant pressure/
The adjustable function of constant current, reduces cost, and solves the constant-current source in traditional technology there are current regulations less efficient, and precision is relatively low
The problem of.
The embodiments of the present invention propose a kind of multifunctional power adapter, including MCU processing units, DC-DC are (directly
Stream-direct current) converter unit and output signal collecting unit；The output signal collecting unit includes that current signal acquisition is single
Member, voltage signal acquisition unit and channel switching module；The input terminal connection MCU processing of the DC-DC converter unit is single
The output end of the output signal of member, DC-DC converter unit connects the current signal collecting unit and voltage signal acquisition list
The input terminal of member；The output end of the current signal collecting unit and voltage signal acquisition unit is all connected with MCU processing units
Input signal, and the input signal of DC-DC converter unit is connected by channel switching module；The channel switching module by
The MCU processing units control.
As advanced optimizing, the MCU processing units include loading ADC (analog-digital converter) modules and DAC moulds
The microcontroller of block.
As advanced optimizing, the DC-DC converter unit includes PWM (pulse width modulation) controllers and phase therewith
BUCK (buck chopper) converter circuit even；The PWM controller includes error amplifier, the same phase of the error amplifier
Input terminal connects the DAC module of MCU processing units；The inverting input interface channel handover module of the error amplifier.
As advanced optimizing, the current signal collecting unit includes current sensing device, current amplifier；The electricity
Current sensor part is connected between power supply adaptor output end and ground networks, described in the input terminal acquisition of the current amplifier
The voltage of current sensing device both sides, the output end while interface channel handover module and MCU processing units of current amplifier
ADC module.
As advanced optimizing, the current sensing device is inspection leakage resistance.
As advanced optimizing, the voltage signal acquisition unit includes voltage follower, the voltage follower it is defeated
Enter the voltage acquisition point of end connection power supply adaptor, the output end of the voltage follower simultaneously interface channel handover module and
The ADC module of MCU processing units.
As advanced optimizing, the voltage signal acquisition unit further includes bleeder circuit, the input of the bleeder circuit
The output end of end connection power supply adaptor, the output end of bleeder circuit connect the voltage acquisition point.
As advanced optimizing, the bleeder circuit is slide rheostat.
As advanced optimizing, the channel switching module is analog switch.
The utility model has the beneficial effects that：
The power supply adaptor realized based on MCU processing units, DC-DC converter unit and output signal collecting unit is adopted
Realize that output voltage/electric current is constant with voltage/current feedback mode, which simply easily realizes；
By controlling the voltage/current feedback kind of adapter come so that adapter is operated in different patterns, to realize
Plurality of devices need not be configured, you can meet different power supply type demands, to reduce cost；
In different modes, using the one-to-one relationship of the reference voltage of PWM controller and output voltage/electric current, lead to
The reference voltage of control PWM controller is crossed to realize that adapter output current or voltage are adjustable；
The comparison of the voltage/current parameter and setting value of acquisition is controlled using MCU processing units, realization output voltage/
Electric current is accurate and stablizes；
The power supply adaptor in the utility model has high-precision, high reliability, top adjustment efficiency and low cost as a result,
Advantage.
Description of the drawings
Fig. 1 is the multifunctional power adapter structure diagram in the utility model embodiment；
Fig. 2 is the structure diagram of output signal sampling unit.
Specific implementation mode
The utility model is directed to a kind of multifunctional power adapter, on the same device realize decompression, constant current and
The adjustable function of constant voltage/constant current, reduces cost, and solves the constant-current source in traditional technology there are current regulations less efficient, essence
Spend relatively low problem.It is real that the utility model is based on MCU processing units, DC-DC converter unit and output signal collecting unit
Existing power supply adaptor realizes that output voltage/electric current is constant using voltage/current feedback system, and the circuit structure is simple easily real
It is existing；By controlling the voltage/current feedback kind of adapter come so that adapter is operated in different patterns, to be implemented without
Configure plurality of devices, you can meet different power supply type demands, to reduce cost；In different modes, it is controlled using PWM
The reference voltage of device and the one-to-one relationship of output voltage/electric current, it is suitable to realize by the reference voltage for controlling PWM controller
Orchestration output current or voltage are adjustable；Comparison control using MCU processing units to the voltage/current parameter and setting value of acquisition
System realizes that output voltage/electric current is accurate and stablizes.
The embodiment of the utility model is further described with reference to the accompanying drawings and embodiments.
As shown in Figure 1, the multifunctional power adapter in the present embodiment includes：
MCU processing units, DC-DC converter unit and output signal collecting unit；The output signal collecting unit
Including current signal collecting unit, voltage signal acquisition unit and analog switch；The input terminal of the DC-DC converter unit
The output signal of MCU processing units is connected, the output end of DC-DC converter unit connects the current signal collecting unit and electricity
Press the input terminal of signal gathering unit；The output end of the current signal collecting unit and voltage signal acquisition unit is all connected with
The input signal of MCU processing units, and the input signal of DC-DC converter unit is connected by analog switch；The simulation
Switch is controlled by the MCU processing units.
Wherein, MCU processing units, mainly by singlechip group at the microcontroller loads ADC and DAC module, and it is suitable to be responsible for power supply
Orchestration output current and voltage detecting control the operating mode of power supply adaptor by the different feedback channel of control selections,
And the reference voltage for controlling PWM controller reaches the adjustable effect of voltage/current size of adapter output, in addition, can also incite somebody to action
The voltage/current parameter of acquisition is compared control with setting value, realizes that output voltage/electric current is accurate and stablizes.
DC-DC converter unit, it is main to realize voltage/current feedback and realize that dynamic adjustment reaches according to end load variation
The effect exported to adapter constant voltage/constant current.
Output signal sampling unit, it is main to realize that current sample amplification and voltage acquisition follow function, the electric current of acquisition and
Voltage signal is connected to the ADC pins of MCU, while being connected to the feedback channel with channel selecting function.
In specific implementation, DC-DC converter unit is mainly made of PWM controller and BUCK converter circuits, PWM controls
The DAC module of the in-phase input end connection MCU processing units of the error amplifier of device processed, to obtain the DAC set by MCU
Value is used as reference voltage, and error amplifier inverting input connects analog switch, to select Voltage Feedback or current feedback
It is compared with the reference voltage signal of in-phase input end, realizes constant voltage/constant current output.BUCK converter circuits are controlled by PWM
The control of device, for realizing buck functionality.
The structure of output signal collecting unit is as shown in Figure 2 comprising analog switch is put by current sensing device and electric current
The current signal collecting unit of big device composition, the voltage signal acquisition unit being made of bleeder circuit and voltage follower；
The current sensing device is connected between adapter output end and ground networks, the input of the current amplifier
End acquires the voltage of the current sensing device both sides, and the output end of current amplifier connects analog switch, to pass through mould
When quasi- switch selection current feedback channel, the output to the inverting input feedback adaptation device of the error amplifier of PWM controller
Current signal, meanwhile, the output end of current amplifier is also connected with the ADC module of MCU processing units, consequently facilitating MCU processing is single
Member obtains the output current parameter of adapter；
The input terminal of the bleeder circuit connects adapter output end, the output end connection voltage follower of bleeder circuit
The output end of input terminal, voltage follower connects analog switch, thus when selecting Voltage Feedback channel by analog switch, to
The output voltage signal of the inverting input feedback adaptation device of the error amplifier of PWM controller, meanwhile, the output of bleeder circuit
End is also connected with the ADC module of MCU processing units, consequently facilitating MCU processing units obtain the output voltage parameter of adapter.MCU
By the output power that can obtain power supply adaptor by calculating to Current Voltage parameter acquisition.
Here high stability inspection leakage resistance may be used in current sensing device, by examining output of the leakage resistance to adapter
Current signal is sampled, and realizes simplicity, at low cost.The slide rheostat of low cost may be used to realize in bleeder circuit, leads to
It crosses and the output voltage signal of adapter is divided, play the role of protecting MCU processing units.Analog switch uses low conducting
The analog switch of impedance can reduce influence of the channel switching to output voltage/electric current signal.
MCU processing units mainly complete following functions：
1, the electric current and voltage parameter that the ADC module of MCU exports power supply adaptor are acquired, to obtain adapter
Electric current, voltage, the power parameter currently exported.
2, the DAC module output certain voltage value of MCU works as electricity to the in-phase input end of error amplifier as reference voltage
When source adapter is operated in constant current source module (analog switch opens current feedback channel), this DAC value and adapter output
Constant current parameter is one-to-one relationship.After the amplification factor of the DAC value divided by current amplifier again divided by inspection galvanic electricity resistance value
Required constant current parameter is obtained, it is possible thereby to which setting adapter exports the DAC value corresponding to different constant current parameters in software.
3, MCU DAC module export certain voltage value to error amplifier in-phase input end as reference voltage.When suitable
When orchestration is operated in constant pressure source module (analog switch opens Voltage Feedback channel), the constant pressure of this DAC value and adapter output
Parameter is one-to-one relationship.Reference voltage is multiplied by feedback dividing ratios and can be obtained required constant pressure parameter, it is possible thereby to
Storage adapter exports the DAC value corresponding to different constant pressure parameters in software.
4, MCU is by the constant voltage mode or constant current mode controlled to select adapter to work to analog switch, then
Required voltage or current parameters are set under associative mode, when adapter output end, which accesses, to be loaded, you can just
Often output, when load variation DAC value is constant, PWM controller adjusts PWM wave according to voltage/circuit parameter of feedback
Duty ratio, realize voltage either electric current be constant and achieve the effect that voltage or electric current output are stable.
Claims (9)
1. a kind of multifunctional power adapter, which is characterized in that including MCU processing units, DC-DC converter unit and output
Signal gathering unit；
The output signal collecting unit includes current signal collecting unit, voltage signal acquisition unit and channel switching mould
Block；The output signal of the input terminal connection MCU processing units of the DC-DC converter unit, the output of DC-DC converter unit
End connects the input terminal of the current signal collecting unit and voltage signal acquisition unit；The current signal collecting unit and electricity
The output end of pressure signal gathering unit is all connected with the input signal of MCU processing units, and connects DC- by channel switching module
The input signal of DC converter units；The channel switching module is controlled by the MCU processing units.
2. multifunctional power adapter as described in claim 1, which is characterized in that the MCU processing units include loading ADC
The microcontroller of module and DAC module.
3. multifunctional power adapter as claimed in claim 2, which is characterized in that the DC-DC converter unit includes PWM
Controller and the BUCK converter circuits being attached thereto；The PWM controller includes error amplifier, the error amplifier
In-phase input end connects the DAC module of MCU processing units；The inverting input interface channel of the error amplifier switches mould
Block.
4. multifunctional power adapter as claimed in claim 3, which is characterized in that the current signal collecting unit includes electricity
Current sensor part, current amplifier；The current sensing device is connected between power supply adaptor output end and ground networks, institute
The input terminal for stating current amplifier acquires the voltage of the current sensing device both sides, and the output end of current amplifier connects simultaneously
The ADC module of channel switching module and MCU processing units.
5. multifunctional power adapter as claimed in claim 4, which is characterized in that the current sensing device is inspection galvanic electricity
Resistance.
6. multifunctional power adapter as claimed in claim 2, which is characterized in that the voltage signal acquisition unit includes electricity
Press follower, the voltage follower input terminal connection power supply adaptor voltage acquisition point, the voltage follower it is defeated
The ADC module of outlet while interface channel handover module and MCU processing units.
7. multifunctional power adapter as claimed in claim 6, which is characterized in that the voltage signal acquisition unit further includes
Bleeder circuit, the bleeder circuit input terminal connection power supply adaptor output end, bleeder circuit output end connection described in
Voltage acquisition point.
8. multifunctional power adapter as claimed in claim 7, which is characterized in that the bleeder circuit is slide rheostat.
9. the multifunctional power adapter as described in claim 1-8 any one, which is characterized in that the channel switching module
For analog switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820501254.5U CN207965718U (en) | 2018-04-10 | 2018-04-10 | A kind of multifunctional power adapter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820501254.5U CN207965718U (en) | 2018-04-10 | 2018-04-10 | A kind of multifunctional power adapter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207965718U true CN207965718U (en) | 2018-10-12 |
Family
ID=63727443
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820501254.5U Active CN207965718U (en) | 2018-04-10 | 2018-04-10 | A kind of multifunctional power adapter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207965718U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109782662A (en) * | 2019-01-09 | 2019-05-21 | 南通思凯光电有限公司 | A kind of digital laser control power supply |
| CN110543206A (en) * | 2019-08-28 | 2019-12-06 | 歌尔股份有限公司 | current and voltage regulating method, device, equipment and storage medium |
| CN117148910A (en) * | 2023-10-31 | 2023-12-01 | 深圳和润达科技有限公司 | Intelligent control method and system for constant-current constant-voltage power supply circuit |
-
2018
- 2018-04-10 CN CN201820501254.5U patent/CN207965718U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109782662A (en) * | 2019-01-09 | 2019-05-21 | 南通思凯光电有限公司 | A kind of digital laser control power supply |
| CN110543206A (en) * | 2019-08-28 | 2019-12-06 | 歌尔股份有限公司 | current and voltage regulating method, device, equipment and storage medium |
| CN117148910A (en) * | 2023-10-31 | 2023-12-01 | 深圳和润达科技有限公司 | Intelligent control method and system for constant-current constant-voltage power supply circuit |
| CN117148910B (en) * | 2023-10-31 | 2024-01-09 | 深圳和润达科技有限公司 | Intelligent control method and system for constant-current constant-voltage power supply circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207965718U (en) | A kind of multifunctional power adapter | |
| CN110196613A (en) | A kind of power supply device for DUT in integrated circuit test system | |
| CN208937625U (en) | A kind of electronic load circuit | |
| CN106855731B (en) | Dual-mode voltage stabilizer circuit | |
| CN203479877U (en) | Device and system for sensing and regulating inductor current in inductor | |
| CN107612303A (en) | System and method for the electric current in controlling switch adjuster | |
| CN104184348A (en) | Power supply system capable of maintaining high conversion efficiency for different loads | |
| CN103560364A (en) | Intelligent type switch socket with two-time form and intelligent type switch extension socket | |
| CN109613331B (en) | Load detection method and method for alternating current charging pile based on double-load array | |
| CN109975586A (en) | A kind of constant current electronic load circuit and its working method | |
| CN113271004A (en) | Adjustable boost power supply of high accuracy software | |
| CN115752125A (en) | Controllable voltage regulating circuit, method and test system for detonator test | |
| CN109343433B (en) | High-precision high-resolution programmable power supply circuit | |
| CN109327141A (en) | A kind of wide-range voltage and High-current output method and power-supply system | |
| CN207946716U (en) | A kind of numerical control constant-current source device | |
| CN108512429A (en) | A kind of number isolated form DC/DC converters and control method | |
| CN105116950B (en) | A kind of Digital DC Voltage-stabilized Power Source of high efficiency low ripple | |
| CN201853157U (en) | Program-controlled DC (direct current) load discharging circuit | |
| CN203838195U (en) | Voltage regulating device and wiring circuit used for electric power-frequency voltage-withstand test | |
| CN107979266B (en) | Single-inductance double-output switch converters voltage-type-capacitance current ripple mixing control method and device | |
| CN215576337U (en) | Multi-range variable-gain current source | |
| CN102570805A (en) | Buck converter | |
| CN204089619U (en) | Thin high-power programmable DC power supply | |
| CN208128138U (en) | The changeable control circuit of constant current-constant voltage mode | |
| CN208538011U (en) | A kind of high-precision pulse constant-current source |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder |
Address after: 610041 nine Xing Xing Road 16, hi tech Zone, Sichuan, Chengdu Patentee after: MAIPU COMMUNICATION TECHNOLOGY Co.,Ltd. Address before: 610041, 17 floor, maple building, 1 building, 288 Tianfu street, Chengdu, Sichuan. Patentee before: MAIPU COMMUNICATION TECHNOLOGY Co.,Ltd. |
|
| CP02 | Change in the address of a patent holder |