CN207251469U - A kind of DC DC conversion circuits for being used for intelligent express delivery cabinet - Google Patents
A kind of DC DC conversion circuits for being used for intelligent express delivery cabinet Download PDFInfo
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- CN207251469U CN207251469U CN201721255299.0U CN201721255299U CN207251469U CN 207251469 U CN207251469 U CN 207251469U CN 201721255299 U CN201721255299 U CN 201721255299U CN 207251469 U CN207251469 U CN 207251469U
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Abstract
The utility model provides a kind of DC DC conversion circuits for being used for intelligent express delivery cabinet, it is serially connected with after the storage battery P is in parallel with capacitance C1 between 12V voltage ends and ground, the Vin ends of chip U1 are connected with 12V voltage ends, GND ends are grounded, FB ends are grounded by torch C2, Vout ends are grounded by diode D1, and Vout ends also pass sequentially through inductance L1 and diode D2 ground connection；The anode of diode D2 is connected through inductance L2 with 5V voltage ends；One end is connected with 5V voltage ends after capacitance C3 and capacitance C4 parallel connections, other end ground connection, and diode D3 is also in series with the branch where capacitance C4；The utility model in input pipe foot by setting double capacitor filters, and the RC filter circuits of double capacitances are set in efferent duct foot and rectify adjustable voltage stabilizing chip, TVS transient voltages suppression principle using three, it can not effectively filter out interference signal present in input direct voltage when solving the problems, such as to need to obtain a variety of DC voltage values.
Description
Technical field
It the utility model is related to express delivery cabinet power technique fields, and in particular to a kind of DC-DC for being used for intelligent express delivery cabinet turns
Change circuit.
Background technology
For dc-dc effectively to export the electric pressure converter of fixed voltage after transformation input voltage, dc-dc can
It is divided into three classes：Booster type dc-dc, buck DC-DC converter and buck-boost type dc-dc.According to demand
Three classes can be used to control：PWM control types are efficient and have good output voltage ripple and noise.Even if PFM control types are long
Have the advantages that power consumption is small when time use, especially small load.PFM controls are carried out during the small load of PWM/PFM conversion hysterias, and in weight
PWM controls are automatically switched to during load.DC-DC converters are widely used in mobile phone, MP3, digital camera, portable matchmaker at present
In the products such as body player.
However, even if the design input and output of many DC-DC conversion circuits have terminated filter circuit, in the circuit course of work
The unstable situation of voltage supply still occurs, so as to cause whole system cisco unity malfunction.Cause the master of this problem
It is exactly to output and input in DC voltage that there are interference signal, the input pipe of existing most DC-DC conversion circuits to want reason
Foot is filtered using common Single Capacitance, can not filter out interference signal present in input direct voltage, and is to do in output terminal
Filtering process operates.
Utility model content
In order to solve the above technical problems, the utility model provides a kind of DC-DC conversion electricity for being used for intelligent express delivery cabinet
Road, this is used for the DC-DC conversion circuits of intelligent express delivery cabinet by setting double capacitor filters in input pipe foot, and is exporting
Pin end sets the RC filter circuits of double capacitances and rectifies adjustable voltage stabilizing chip using three, TVS transient voltages suppress principle, solves
The problem of when needing to obtain a variety of DC voltage values and interference signal present in input direct voltage can not be effectively filtered out.
The utility model is achieved by the following technical programs.
A kind of DC-DC conversion circuits for being used for intelligent express delivery cabinet provided by the utility model, including storage battery P, chip U1
~U3, capacitance C1~C10, resistance R1~R2, inductance L1 and L2, diode D1~D3；After the storage battery P is in parallel with capacitance C1
It is serially connected between 12V voltage ends and ground, the Vin ends of chip U1 are connected with 12V voltage ends, and GND ends ground connection, FB ends pass through torch C2
Ground connection, Vout ends are grounded by diode D1, and Vout ends also pass sequentially through inductance L1 and diode D2 ground connection；Diode D2's
Anode is connected through inductance L2 with 5V voltage ends；One end is connected with 5V voltage ends after capacitance C3 and capacitance C4 parallel connections, other end ground connection,
And diode D3 is also in series with the branch where capacitance C4；
The Vin ends of chip U2 are connected with 5V voltage ends, and GND ends ground connection, Vout ends are connected with 3.3V voltage ends；Resistance R1 and
One end is connected with 5V voltage ends after capacitance C5 parallel connections, other end ground connection；One end and 3.3V voltages after capacitance C6 and capacitance C7 parallel connections
End connection, other end ground connection；
The Vin ends of chip U3 are connected with 5V voltage ends, and GND ends ground connection, Vout ends are connected with 1.8V voltage ends；Resistance R2 and
One end is connected with 5V voltage ends after capacitance C8 parallel connections, other end ground connection；One end and 1.8V voltages after capacitance C9 and capacitance C10 parallel connections
End connection, other end ground connection.
Light emitting diode D4 is also in series with branch where the resistance R1.
Light emitting diode D5 is also in series with branch where the resistance R2.
The chip U1 rectifies adjustable voltage stabilizing chip LM117K for three.
The model AMS1117S-3.3 of the chip U2.
The model AMS1117S-1.8 of the chip U3.
The diode D1 and diode D2 are TVS transient voltage suppressors.
The beneficial effects of the utility model are：By setting double capacitor filters in input pipe foot, and exporting
Pin end sets the RC filter circuits of double capacitances and rectifies adjustable voltage stabilizing chip using three, TVS transient voltages suppress principle, solves
The problem of when needing to obtain a variety of DC voltage values and interference signal present in input direct voltage can not be effectively filtered out；This
Utility model employs LC filter circuits, RC filters current-limiting circuit and double capacitor filters, three proper adjustable voltage stabilizing chips,
TVS transient voltages suppress principle, have positive meaning to the stability and robustness for improving DC-DC conversion circuits.
Brief description of the drawings
Fig. 1 is the circuit diagram of the utility model.
Embodiment
Be described further below the technical solution of the utility model, but claimed scope be not limited to it is described.
A kind of DC-DC conversion circuits for being used for intelligent express delivery cabinet as shown in Figure 1, including storage battery P, chip U1~U3,
Capacitance C1~C10, resistance R1~R2, inductance L1 and L2, diode D1~D3；The storage battery P after capacitance C1 parallel connections with concatenating
Between 12V voltage ends and ground, the Vin ends of chip U1 are connected with 12V voltage ends, and GND ends ground connection, FB ends are connect by torch C2
Ground, Vout ends are grounded by diode D1, and Vout ends also pass sequentially through inductance L1 and diode D2 ground connection；The anode of diode D2
It is connected through inductance L2 with 5V voltage ends；One end is connected with 5V voltage ends after capacitance C3 and capacitance C4 parallel connections, other end ground connection, and electricity
Diode D3 is also in series with branch where appearance C4；
The Vin ends of chip U2 are connected with 5V voltage ends, and GND ends ground connection, Vout ends are connected with 3.3V voltage ends；Resistance R1 and
One end is connected with 5V voltage ends after capacitance C5 parallel connections, other end ground connection；One end and 3.3V voltages after capacitance C6 and capacitance C7 parallel connections
End connection, other end ground connection；
The Vin ends of chip U3 are connected with 5V voltage ends, and GND ends ground connection, Vout ends are connected with 1.8V voltage ends；Resistance R2 and
One end is connected with 5V voltage ends after capacitance C8 parallel connections, other end ground connection；One end and 1.8V voltages after capacitance C9 and capacitance C10 parallel connections
End connection, other end ground connection.
Light emitting diode D4 is also in series with branch where the resistance R1.
Light emitting diode D5 is also in series with branch where the resistance R2.
The chip U1 rectifies adjustable voltage stabilizing chip LM117K for three.
The model AMS1117S-3.3 of the chip U2.
The model AMS1117S-1.8 of the chip U3.
The diode D1 and diode D2 are TVS transient voltage suppressors.
For the utility model in practical work process, the DC voltage by decompression input is being connected to electrolytic capacitor C1 just
Extremely, the Vin pins of LM117K chips are connected to after filtered, energy storage and conversion；Inputted so in power up straight
Interference signal in galvanic electricity pressure is effectively filtered out by L1, C2 and L2, the double LC filter circuits of C3 compositions, and by screening signal, filtering is made an uproar
Sound, stabling current and suppression Electromagnetic Interference etc., it is ensured that by the stability of DC-DC conversion circuit output voltages, improve DC-
Electrical stability on DC chips；The 5V voltages are connected to AMS1117S-3.3 chips by R1 and C5 circuit smoothes signal or voltage
Input terminal Vin, double capacitor filters that the AMS1117S-3.3 chips output pin Vout is formed via capacitance C6 and C7
After obtain 3.3V voltages；The 5V voltages are connected to AMS1117S-1.8 cores by R2 and C7 circuit smoothes signal or voltage at the same time
Double capacitor filterings electricity that piece input terminal Vin, the AMS1117S-1.8 chips output pin Vout are formed via capacitance C8 and C9
1.8V voltages are obtained behind road, when this circuit design employs LC filter circuits, RC filtering current-limiting circuits and double capacitor filterings electricity
Road, three rectify adjustable voltage stabilizing chip, TVS transient voltages suppress principle, stability and robustness to improving DC-DC conversion circuits
There is positive meaning.
Claims (7)
1. a kind of DC-DC conversion circuits for being used for intelligent express delivery cabinet, including storage battery P, chip U1~U3, capacitance C1~C10, electricity
Hinder R1~R2, inductance L1 and L2, diode D1~D3, it is characterised in that：It is serially connected with after the storage battery P is in parallel with capacitance C1
Between 12V voltage ends and ground, the Vin ends of chip U1 are connected with 12V voltage ends, and GND ends ground connection, FB ends are grounded by torch C2,
Vout ends are grounded by diode D1, and Vout ends also pass sequentially through inductance L1 and diode D2 ground connection；The anode warp of diode D2
Inductance L2 is connected with 5V voltage ends；One end is connected with 5V voltage ends after capacitance C3 and capacitance C4 parallel connections, other end ground connection, and capacitance
Diode D3 is also in series with branch where C4；
The Vin ends of chip U2 are connected with 5V voltage ends, and GND ends ground connection, Vout ends are connected with 3.3V voltage ends；Resistance R1 and capacitance
One end is connected with 5V voltage ends after C5 parallel connections, other end ground connection；One end connects with 3.3V voltage ends after capacitance C6 and capacitance C7 parallel connections
Connect, other end ground connection；
The Vin ends of chip U3 are connected with 5V voltage ends, and GND ends ground connection, Vout ends are connected with 1.8V voltage ends；Resistance R2 and capacitance
One end is connected with 5V voltage ends after C8 parallel connections, other end ground connection；One end connects with 1.8V voltage ends after capacitance C9 and capacitance C10 parallel connections
Connect, other end ground connection.
2. the DC-DC conversion circuits as claimed in claim 1 for being used for intelligent express delivery cabinet, it is characterised in that：The resistance R1 institutes
Branch on be also in series with light emitting diode D4.
3. the DC-DC conversion circuits as claimed in claim 1 for being used for intelligent express delivery cabinet, it is characterised in that：The resistance R2 institutes
Branch on be also in series with light emitting diode D5.
4. the DC-DC conversion circuits for being used for intelligent express delivery cabinet as described in any in claims 1 to 3, it is characterised in that：It is described
Chip U1 rectifies adjustable voltage stabilizing chip LM117K for three.
5. the DC-DC conversion circuits for being used for intelligent express delivery cabinet as described in any in claims 1 to 3, it is characterised in that：It is described
The model AMS1117S-3.3 of chip U2.
6. the DC-DC conversion circuits for being used for intelligent express delivery cabinet as described in any in claims 1 to 3, it is characterised in that：It is described
The model AMS1117S-1.8 of chip U3.
7. the DC-DC conversion circuits for being used for intelligent express delivery cabinet as described in any in claims 1 to 3, it is characterised in that：It is described
Diode D1 and diode D2 is TVS transient voltage suppressors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721255299.0U CN207251469U (en) | 2017-09-28 | 2017-09-28 | A kind of DC DC conversion circuits for being used for intelligent express delivery cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721255299.0U CN207251469U (en) | 2017-09-28 | 2017-09-28 | A kind of DC DC conversion circuits for being used for intelligent express delivery cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207251469U true CN207251469U (en) | 2018-04-17 |
Family
ID=61885534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721255299.0U Expired - Fee Related CN207251469U (en) | 2017-09-28 | 2017-09-28 | A kind of DC DC conversion circuits for being used for intelligent express delivery cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207251469U (en) |
-
2017
- 2017-09-28 CN CN201721255299.0U patent/CN207251469U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180417 Termination date: 20180928 |