CN208806787U - A kind of telemetering terminal power supply circuit - Google Patents
A kind of telemetering terminal power supply circuit Download PDFInfo
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- CN208806787U CN208806787U CN201821482604.4U CN201821482604U CN208806787U CN 208806787 U CN208806787 U CN 208806787U CN 201821482604 U CN201821482604 U CN 201821482604U CN 208806787 U CN208806787 U CN 208806787U
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Abstract
This application involves power supply control technology field more particularly to a kind of telemetering terminal power supply circuits.Including switch voltage-stabilizing circuit, the first linear voltage-stabilizing circuit, the second linear voltage-stabilizing circuit and jumper cap.External dc power provides the voltage of 9-28V through the effect of switch voltage-stabilizing circuit, obtains 5V voltage；5V voltage exports the voltage of 3.6~4.2V and the voltage of 3.3V by the effect of the first linear voltage-stabilizing circuit and the second linear voltage-stabilizing circuit respectively, the voltage of 3.6~4.2V uses for the communication module of different communication networks, and the voltage of 3.3V uses for the 3.3V microcontroller chip inside telemetering terminal with other 3.3V chips.If using 5V microcontroller chip inside telemetering terminal, jumper cap is taken out, does not export 3.3V voltage drop low-power consumption.It solves a telemetering terminal of every exploitation, the type selecting of power supply chip and the design of power supply circuit will be carried out, increase the period of exploitation, the problem of waste of manpower, material resources and financial resources.
Description
Technical field
This application involves power supply control technology field more particularly to a kind of telemetering terminal power supply circuits.
Background technique
Telemetering terminal can acquire all kinds of instrument, the output signal of transmitter and remotely be passed by internal communication function
Transmission of data, it is with the development of electronic information technology, distant at present suitable for not having the monitoring field of condition of power supply, bad environments
Terminating machine is surveyed to be widely used in fields such as wisdom water utilities, wisdom agricultural, intelligence manufacture and smart cities.According to wireless
The difference of communication network, telemetering terminal in the market can be divided into four kinds of modes i.e.: GPRS mode, 3G mode, 4G mode and
NBIOT mode.Usually using different communication modules to adapt to different communication network standards inside telemetering terminal.Different nets
It is different using voltage for the communication module of network, and recommending voltage such as the BC95 module of NBIOT mode is 3.6V, 4G mode
It is 3.8V that SIM7600CE module, which recommends voltage, and it is 4.0V that the G510 module of GPRS mode, which recommends voltage,.The not only use electricity of module
Pressure is different, and requirement of each communication module to electric current is also different, and furthermore telemetering terminal internal microcontroller chip is according to using electricity
Pressure can be divided into 3.3V chip and 5V chip.
For the difference of communication module and microcontroller chip power supply parameter, currently used solution is first selected logical
The model for interrogating module and microcontroller chip carries out power supply chip further according to the use voltage of communication module and microcontroller chip
Type selecting and power supply circuit design.
The problem of this brings be a telemetering terminal of every exploitation, will carry out the type selecting and power supply circuit of power supply chip
Design, which increase the periods of exploitation, waste the energy of designer, and waste is all caused in human and material resources, financial resources.
Utility model content
This application provides a kind of telemetering terminal power supply circuits, to solve every a telemetering terminal of exploitation, Dou Yaojin
The type selecting of row power supply chip and the design of power supply circuit, increase the period of exploitation, waste the energy of designer, while object
The problem of waste is all caused in power, financial resources.Including switch voltage-stabilizing circuit, the first linear voltage-stabilizing circuit, the second linear voltage stabilization electricity
The input terminal of road and jumper cap, the switch voltage-stabilizing circuit is connect with external dc power, output end respectively with the First Line
The input terminal of property voltage regulator circuit is connected with the input terminal of the jumper cap；The output end of the jumper cap is linear steady with described second
The input terminal of volt circuit connects.
Optionally, the switch voltage-stabilizing circuit includes DC/DC conversion chip and the first peripheral circuit, the DC/DC conversion
Chip has eight pins, and wherein third pin is enable end, first peripheral circuit and the first of the DC/DC conversion chip
Pin, the 4th pin, the 5th pin, the 6th pin, the 7th pin and the connection of the 8th pin.
Optionally, the external dc power is connect by capacitor with the second pin of the DC/DC conversion chip.
Optionally, first linear voltage-stabilizing circuit includes the first LDO chip and the second peripheral circuit, the first LDO
Chip is there are five pin, and wherein third pin is grounded, the 4th pin of second peripheral circuit and the first LDO chip and
The connection of 5th pin.
Optionally, the output end of the switch voltage-stabilizing circuit is drawn by three capacitors with the first of the first LDO chip
Foot is connected with second pin.
It optionally, further include adjustable resistance in second peripheral circuit.
A kind of telemetering terminal power supply circuit according to claim 1, which is characterized in that second linear voltage stabilization
Circuit includes the 2nd LDO chip and third peripheral circuit, and there are five pins for the 2nd LDO chip, and wherein second pin is grounded,
The third peripheral circuit is connect with the 4th pin of the 2nd LDO chip and the 5th pin.
Optionally, the jumper cap is connected by the first pin and third pin of three capacitors and the 2nd LDO chip
It connects.
The technical scheme provided by the application includes following advantageous effects:
This application provides a kind of telemetering terminal power supply circuit, including switch voltage-stabilizing circuit, the first linear voltage-stabilizing circuit,
The input terminal of second linear voltage-stabilizing circuit and jumper cap, the switch voltage-stabilizing circuit is connect with external dc power, output end point
It is not connect with the input terminal of the input terminal of first linear voltage-stabilizing circuit and the jumper cap；The output end of the jumper cap with
The input terminal of second linear voltage-stabilizing circuit connects.External dc power provide 9-28V voltage through capacitive energy storage, filter it
The second pin of DC/DC conversion chip is entered afterwards, and the third pin of DC/DC conversion chip is chip enable end, defaults high electricity
Flat or unloaded effective, external dc power obtains 5V voltage after DC/DC conversion chip and its external circuit effect.The voltage
It can power for the 5V microcontroller chip inside telemetering terminal with other 5V power supply chips.The 5V electricity of switch voltage-stabilizing circuit output
Pressure enters the first pin of input terminal second pin and enable end of the first LDO chip, chip default after capacitor filtering
Enable end high level is effective, and the 4th pin of the first LDO chip is output end, and output voltage obtains voltage after capacitor filtering
VCC.By the adjustable resistance resistance value in the second peripheral circuit of adjusting, the voltage of VCC can be set in the section 3.6~4.2V,
The voltage uses for the communication module of different communication networks.The 5V voltage of switch voltage-stabilizing circuit output is connected to the one of jumper cap
End, the other end of jumper cap enter the first pin of input terminal and enable end third of the 2nd LDO chip after capacitor filtering
Pin, chip default enable end high level is effective, and the 5th pin of the 2nd LDO chip is output end, and output voltage is by electricity
3.3V voltage is obtained after capacitor filter.The voltage is for the 3.3V microcontroller chip and other 3.3V chips inside telemetering terminal
It uses.As used 5V microcontroller chip inside telemetering terminal, then jumper cap can be taken out, not export 3.3V voltage,
Reduce power consumption.This application provides a kind of telemetering terminal power supply circuit can satisfy on the market most of telemetering terminals to confession
The demand of electrical parameter has reached the reduction development cycle, saves the purpose of development cost.
Detailed description of the invention
In order to illustrate more clearly of the technical solution of the application, letter will be made to attached drawing needed in the embodiment below
Singly introduce, it should be apparent that, for those of ordinary skills, without any creative labor,
It is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of telemetering terminal power supply circuit construction schematic diagram provided by the embodiments of the present application.
Fig. 2 is switch voltage-stabilizing circuit schematic diagram provided by the embodiments of the present application.
Fig. 3 is the first linear voltage-stabilizing circuit schematic diagram provided by the embodiments of the present application.
Fig. 4 is the second linear voltage-stabilizing circuit provided by the embodiments of the present application and jumper cap schematic diagram.
Description of symbols:
1, external dc power；2, switch voltage-stabilizing circuit；21, DC/DC conversion chip；3, the first linear voltage-stabilizing circuit；31,
First LDO chip；4, jumper cap；5, the second linear voltage-stabilizing circuit；51, the 2nd LDO chip.
Specific embodiment
Illustratively, as shown in Figure 1, being a kind of telemetering terminal power supply circuit provided by the present application, to solve every exploitation
A telemetering terminal will carry out the type selecting of power supply chip and the design of power supply circuit, increase the period of exploitation, waste
The energy of designer, while the problem of all cause waste in material resources, financial resources.
A kind of telemetering terminal power supply circuit provided by the present application includes switch voltage-stabilizing circuit 2, the first linear voltage-stabilizing circuit
3, the input terminal of the second linear voltage-stabilizing circuit 5 and jumper cap 4, switch voltage-stabilizing circuit 2 is connect with external dc power 1, output end
It is connect respectively with one end of the input terminal of the first linear voltage-stabilizing circuit 3 and jumper cap 4；The other end of jumper cap 4 and second is linearly
The input terminal of voltage regulator circuit 5 connects.
Illustratively, as shown in Fig. 2, being the schematic diagram of switch voltage-stabilizing circuit 2, switch voltage-stabilizing circuit 2 is converted including DC/DC
Chip 21 and the first peripheral circuit, DC/DC conversion chip 21 have eight pins, and wherein third pin is enable end, default high electricity
It is flat or unloaded effective.One end of external dc power 1 is connect by capacitor C3 with the second pin of DC/DC conversion chip 21, electricity
Holding is energy-storage travelling wave tube, neither generates nor consumes energy, have the effects that filtering, phase shift, bypass, coupling in electronic circuit,
Effect with the capacitor here is that external dc power 1 is entered to DC/DC conversion chip after the energy storage of capacitor C3, filtering
21 second pin.First pin of DC/DC conversion chip 21 is connect by capacitor C1 with the first peripheral circuit, DC/DC conversion
4th pin of chip 21 is grounded by capacitor C6；Electricity in 5th pin of DC/DC conversion chip 21 and the first peripheral circuit
Resistance R1 is connected with R3, and R3 is grounded after connecting with resistance R4；In 6th pin of DC/DC conversion chip 21 and the first peripheral circuit
Capacitor C4, capacitor C7 and resistance R2 connection, after wherein capacitor C4 connects with resistance R2 again with capacitor C7 earth；DC/DC
7th pin of conversion chip 21 is grounded；The 8th pin of DC/DC conversion chip 21 and diode D1, electricity in the first peripheral circuit
Feel L1, capacitor C2 and capacitor C5 connection, wherein diode D1 is in parallel with inductance L1, capacitor C2 it is in parallel with capacitor C5 again with inductance
L1 series connection.External dc power 1 can provide the voltage of 9-28V, by DC/DC conversion chip 21 and with DC/DC conversion chip 21
First peripheral circuit collective effect of connection, can export the voltage of 5V, which can be the 5V micro-control inside telemetering terminal
Device chip processed and other 5V power supply chips are powered.
Illustratively, as shown in figure 3, being the schematic diagram of the first linear voltage-stabilizing circuit 3, the first linear voltage-stabilizing circuit 3 includes
First LDO chip 31 and the second peripheral circuit, there are five pins for the first LDO chip 31, and wherein third pin is grounded, the second periphery
Circuit is connect with the 4th pin of the first LDO chip 31 and the 5th pin.The 5V voltage that switch voltage-stabilizing circuit 2 exports passes through capacitor
The first pin of input terminal second pin and enable end of the first LDO chip 31, enable end are entered after C19, C15 and C16 filtering
It is effective that first pin defaults high level；The third pin of first LDO chip 31 is grounded；4th pin is output end, the 4th pin
Connect with the resistance R5 of the second peripheral circuit, resistance R6, capacitor C20, capacitor C17 and capacitor C18, wherein resistance R5, resistance R6,
Capacitor C20, capacitor C17 and capacitor C18 are connected in parallel；5th pin is connect with R7, R8 of the second peripheral circuit, wherein R7 and R8
It is grounded after series connection.
Switch voltage-stabilizing circuit 2 export 5V voltage by the first LDO chip 31 and connect with the first LDO chip 31 second
Voltage VCC is obtained after peripheral circuit effect.By adjusting the resistance value of adjustable resistance R8, the voltage of VCC can be set in 3.6~
In the section 4.2V, which uses for the communication module of different communication networks.
Illustratively, as shown in figure 4, being the schematic diagram of the second linear voltage-stabilizing circuit 5 and jumper cap 4, switch voltage-stabilizing circuit 2
The 5V voltage of output is connected to the input terminal of jumper cap 4, and the output end of jumper cap 4 is filtered by capacitor C8, capacitor C9 and capacitor C10
The first pin of input terminal and enable end third pin of the 2nd LDO chip 51 of the second linear voltage-stabilizing circuit 5 are entered after wave, it should
Chip default enable end high level is effective, then the 4th pin is connect with capacitor C11 to be grounded；The of second linear voltage-stabilizing circuit 5
5th pin of two LDO chips 51 is output end, capacitor C14, capacitor C12 and the capacitor of the 5th pin and third peripheral circuit
C13 connection, wherein capacitor C14, capacitor C12 and capacitor C13 belong to parallel relationship；Output voltage passes through capacitor C12, C13 and C14
3.3V voltage is obtained after filtering.The 5V voltage that switch voltage-stabilizing circuit 2 exports passes through the 2nd LDO core of the second linear voltage-stabilizing circuit 5
Obtain voltage after piece 51 and the third peripheral circuit being connect with the 2nd LDO chip 51 effect and obtain 3.3V voltage, the voltage for
3.3V microcontroller chip and other 3.3V chips inside telemetering terminal use.If using 5V inside telemetering terminal
Microcontroller chip can then take out jumper cap 4, not export 3.3V voltage, reduce power consumption.
Optionally, 21 model TPS54331DR of DC/DC conversion chip.
Optionally, 31 model MIC29302AWU of the first LDO chip.
Optionally, 51 model MIC5219-3.3BM5 of the 2nd LDO chip.
This application provides a kind of telemetering terminal power supply circuit, including switch voltage-stabilizing circuit, the first linear voltage-stabilizing circuit,
The input terminal of second linear voltage-stabilizing circuit and jumper cap, switch voltage-stabilizing circuit is connect with external dc power, output end respectively with
The input terminal of first linear voltage-stabilizing circuit is connected with one end of jumper cap；The other end of jumper cap and the second linear voltage-stabilizing circuit
Input terminal connection.External dc power enters the second pin of DC/DC conversion chip, DC/DC after capacitive energy storage, filtering
The third pin of conversion chip is chip enable end, defaults high level or unloaded effective, external dc power converts core through DC/DC
After piece and its external circuit effect, 5V voltage is obtained.The voltage can for inside telemetering terminal 5V microcontroller chip and its
He powers at 5V power supply chip.The 5V voltage of switch voltage-stabilizing circuit output enters the defeated of the first LDO chip after capacitor filtering
Enter to hold the first pin of second pin and enable end, chip default enable end high level is effective, the 4th pin of the first LDO chip
For output end, output voltage obtains voltage VCC after capacitor filtering.By adjusting the adjustable resistance resistance in the second peripheral circuit
The voltage of VCC, can be set in the section 3.6~4.2V by value, which uses for the communication module of different communication networks.It opens
The 5V voltage for closing voltage regulator circuit output is connected to one end of jumper cap, and the other end of jumper cap enters the after capacitor filtering
The first pin of input terminal and enable end third pin of two LDO chips, chip default enable end high level is effective, the 2nd LDO
5th pin of chip is output end, and output voltage obtains 3.3V voltage after capacitor filtering.The voltage is for telemetry terminal system
3.3V microcontroller chip and other 3.3V chips inside machine use.As used 5V microcontroller inside telemetering terminal
Chip, then can take out jumper cap, not export 3.3V voltage, reduce power consumption.This application provides a kind of power supplies of telemetering terminal
Circuit can satisfy demand of most of telemetering terminals to power supply parameter on the market, reach the reduction development cycle, and saving is opened
Send out the purpose of cost.
It should be noted that the relational terms of such as " first " and " second " or the like be used merely to an entity or
Operation is distinguished with another entity or operation, and without necessarily requiring or implying between these entities or operation, there are any
This actual relationship or sequence.Moreover, the terms "include", "comprise" or its any other variant be intended to it is non-exclusive
Property include so that including the article of a series of elements or equipment not only includes those elements, but also including not having
The other element being expressly recited, or further include for elements inherent to such a process, method, article, or device.Do not having
There is the element limited in the case where more limiting by sentence "including a ...", it is not excluded that in the mistake including the element
There is also other identical elements in journey, method, article or equipment.
The above is only the specific embodiment of the application, is made skilled artisans appreciate that or realizing this Shen
Please.Various modifications to these embodiments will be apparent to one skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the application.Therefore, the application
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
It should be understood that the application is not limited to the content for being described above and being shown in the accompanying drawings, and can
To carry out various modifications and change without departing from the scope.Scope of the present application is only limited by the accompanying claims.
Claims (8)
1. a kind of telemetering terminal power supply circuit, including switch voltage-stabilizing circuit (2), the first linear voltage-stabilizing circuit (3), second are linearly
Voltage regulator circuit (5) and jumper cap (4), which is characterized in that the input terminal and external dc power of the switch voltage-stabilizing circuit (2)
(1) it connects, output end connects with the input terminal of the input terminal of first linear voltage-stabilizing circuit (3) and the jumper cap (4) respectively
It connects；The output end of the jumper cap (4) is connect with the input terminal of second linear voltage-stabilizing circuit (5).
2. a kind of telemetering terminal power supply circuit according to claim 1, which is characterized in that the switch voltage-stabilizing circuit
It (2) include DC/DC conversion chip (21) and the first peripheral circuit, the DC/DC conversion chip (21) has eight pins, wherein the
Three pins are enable end, the first pin of first peripheral circuit and the DC/DC conversion chip (21), the 4th pin, the
Five pins, the 6th pin, the 7th pin and the connection of the 8th pin.
3. a kind of telemetering terminal power supply circuit according to claim 2, which is characterized in that the external dc power
(1) it is connect by capacitor with the second pin of the DC/DC conversion chip (21).
4. a kind of telemetering terminal power supply circuit according to claim 1, which is characterized in that the first linear voltage stabilization electricity
Road (3) includes the first LDO chip (31) and the second peripheral circuit, pin there are five the first LDO chips (31), wherein third
Pin ground connection, second peripheral circuit are connect with the 4th pin of the first LDO chip (31) and the 5th pin.
5. a kind of telemetering terminal power supply circuit according to claim 4, which is characterized in that the switch voltage-stabilizing circuit
(2) output end is connect by three capacitors with the first pin of the first LDO chip (31) and second pin.
6. a kind of telemetering terminal power supply circuit according to claim 4, which is characterized in that in second peripheral circuit
It further include adjustable resistance.
7. a kind of telemetering terminal power supply circuit according to claim 1, which is characterized in that the second linear voltage stabilization electricity
Road (5) includes the 2nd LDO chip (51) and third peripheral circuit, and there are five pins for the 2nd LDO chip (51), wherein second
Pin ground connection, the third peripheral circuit are connect with the 4th pin of the 2nd LDO chip (51) and the 5th pin.
8. a kind of telemetering terminal power supply circuit according to claim 7, which is characterized in that the jumper cap (4) passes through
Three capacitors are connect with the first pin of the 2nd LDO chip (51) and third pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821482604.4U CN208806787U (en) | 2018-09-11 | 2018-09-11 | A kind of telemetering terminal power supply circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821482604.4U CN208806787U (en) | 2018-09-11 | 2018-09-11 | A kind of telemetering terminal power supply circuit |
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| Publication Number | Publication Date |
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| CN208806787U true CN208806787U (en) | 2019-04-30 |
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| CN201821482604.4U Active CN208806787U (en) | 2018-09-11 | 2018-09-11 | A kind of telemetering terminal power supply circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109039352A (en) * | 2018-09-11 | 2018-12-18 | 西安航天自动化股份有限公司 | A kind of telemetering terminal power supply circuit |
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2018
- 2018-09-11 CN CN201821482604.4U patent/CN208806787U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109039352A (en) * | 2018-09-11 | 2018-12-18 | 西安航天自动化股份有限公司 | A kind of telemetering terminal power supply circuit |
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