CN206698112U - A kind of DC DC intelligence insulating power supply modules for PLC power supplies - Google Patents
A kind of DC DC intelligence insulating power supply modules for PLC power supplies Download PDFInfo
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- CN206698112U CN206698112U CN201720334993.5U CN201720334993U CN206698112U CN 206698112 U CN206698112 U CN 206698112U CN 201720334993 U CN201720334993 U CN 201720334993U CN 206698112 U CN206698112 U CN 206698112U
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- circuit
- power supply
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- insulating power
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Abstract
The utility model discloses a kind of DC DC intelligence insulating power supply modules for PLC power supplies, the DC DC intelligence insulating power supplies module includes anti-input reverse-connection circuit, input short circuit over-current protection circuit, EMC filter circuit, DC DC circuit for power conversion and output filter circuit.24V DC input voitages pass through the reverse-connection preventing circuit and the input short circuit over-current protection circuit; again by entering the DC DC circuit for power conversion after the EMC filter circuit, pass through the 5V output voltages stablized again after output filter circuit filtering after HF power conversion.The utility model simple circuit, debugging is simple, and easy to maintenance, power density is big, greatly reduces loss, improves the reliability of system.
Description
Technical field
Electric energy switch technology field is the utility model is related to, more particularly to a kind of DC-DC for PLC power supplies intelligently isolates
Power module.
Background technology
For PLC power modules, according to different application scenarios, its input voltage is generally electric main or high pressure
Direct current 220V, low-voltage direct 48V, 24V etc., it is desirable to power module exports constant DC voltage 5V, and requires high conversion efficiency,
With good reliability.Power module must also have the necessary protections such as overvoltage, excessively stream, short circuit, overtemperature simultaneously, to ensure
Whole PLC system can safely and reliably be run.
Its general circuit of existing PLC power supplys is relative complex, by taking the 100W power supplys for exporting 5V20A as an example, often volume
Huge, power density is relatively low.Because PLC power modules are low-voltage, high-current output, so the loss of power is larger, it is less efficient,
Typically 80% or so.In addition existing PLC power supplys are largely the power modules of foreign brand name, expensive, cost performance compared with
It is low.
Therefore, those skilled in the art is directed to developing a kind of DC-DC intelligence insulating power supply moulds for PLC power supplies
Block, loss is reduced, improve the security and reliability of system.
Utility model content
In view of the drawbacks described above of prior art, the utility model, which provides a kind of DC-DC for PLC power supplies, intelligently isolates
Power module, power consumption can be reduced, improve the safety and reliability of system.
To achieve the above object, the utility model provides a kind of DC-DC intelligence insulating power supply moulds for PLC power supplies
Block, the DC-DC intelligence insulating power supply module include anti-input reverse-connection circuit, input short circuit over-current protection circuit, EMC filtered electricals
Road, DC-DC circuit for power conversion and output filter circuit；
The anti-input reverse-connection circuit receives direct current 24V input voltages, carries out reversal connection detection, is transferred to the input excessively stream
Short-circuit protection circuit；The input short circuit over-current protection circuit is used to carry out overcurrent protection to input voltage, and by input voltage
It is sent to the EMC filter circuit；
The EMC filter circuit is used for the high-frequency noise for absorbing the DC-DC intelligence insulating power supply module, restrains the electricity
Influence of the high-frequency noise of source module to supply line；
The DC-DC circuit for power conversion is IC1 chips, for realizing high frequency conversion, output voltage stabilizing, output overcurrent overvoltage
Protection, overtemperature prote and input with export isolate；
The output filter circuit is filtered to the output voltage of the DC-DC circuit for power conversion so that described defeated
It is satisfactory direct-flow steady voltage to go out voltage transformation；
24V DC input voitages are by the reverse-connection preventing circuit and the input short circuit over-current protection circuit, then pass through institute
Enter the DC-DC circuit for power conversion after stating EMC filter circuit, by being filtered again by the output after HF power conversion
The 5V output voltages stablized after circuit filtering.
In better embodiment of the present utility model, the anti-input reverse-connection circuit include anti-reverse diode D1 and
Fuse FUSE.
In another better embodiment of the present utility model, the EMC filter circuit include electric capacity C10, C11, C2,
C7 and common mode inductance L1.
In better embodiment of the present utility model, the output filter circuit includes electric capacity C3, C4, C5, C6, C8
And inductance L2.
In another better embodiment of the present utility model, the DC-DC intelligence insulating power supply module also includes output
Adjustment circuit, the output regulation circuit include R1, R2 positioned at the IC1 chip peripheries, output voltage are adjusted, made
Output voltage stabilization is obtained on 4.5V-5.5V any one magnitude of voltage.
In better embodiment of the present utility model, the DC-DC intelligence insulating power supply module also includes switch S1,
The switch S1 be connected to the DC-DC intelligence insulating power supply module IC1 chips and the EMC filter circuit electric capacity C1 it
Between, the closing of the remote controlled IC1 chips of switch S1 and open-minded.
DC-DC intelligence insulating power supply modular circuit is succinct disclosed in the utility model, and debugging is simple, easy to maintenance, power
Density is big, and its conversion efficiency is up to 92%, greatly reduces loss, improves the reliability of system；Using isolated topology
Structure, there is input reverse-connection protection, the various protections such as input short protection, output overvoltage, excessively stream, short circuit, safety and reliability.
Design, concrete structure and caused technique effect of the present utility model are made furtherly below with reference to accompanying drawing
It is bright, to be fully understood from the purpose of this utility model, feature and effect.
Brief description of the drawings
Fig. 1 is the DC-DC intelligence insulating power supply modules for being used for PLC power supplies of a preferred embodiment of the present utility model
Structural schematic block diagram.
Fig. 2 is the DC-DC intelligence insulating power supplies module electricity for being used for PLC power supplies of a preferred embodiment of the present utility model
Line structure schematic diagram.
Embodiment
As depicted in figs. 1 and 2, a kind of DC-DC intelligence insulating power supply modules for PLC power supplies, the DC-DC intelligence
Insulating power supply module includes anti-input reverse-connection circuit 1, input short circuit over-current protection circuit 2, EMC filter circuit 3, DC-DC power
Change-over circuit 4 and output filter circuit 5.
Anti- input reverse-connection circuit 1 receives direct current 24V input voltages, carries out reversal connection detection, and it is short to be transferred to the input excessively stream
Road protection circuit 2；Anti- input reverse-connection circuit 1 includes anti-reverse diode D1 and fuse FUSE, due to D1 effect, when straight
When stream input voltage is reversed, module can not obtain electric work, be effectively protected module.
Input short circuit over-current protection circuit 2 is used to be sent to institute to input voltage just overcurrent protection, and by input voltage
State EMC filter circuit 3.
EMC filter circuit 3 is used for the high-frequency noise for absorbing the power module, restrains the high-frequency noise of power module to supplying
The influence of electric line, including electric capacity C10, C11, C2, C7 and common mode inductance L1.
DC-DC circuit for power conversion 4 is IC1 chips, for realize high frequency conversion, output voltage stabilizing, output overcurrent overvoltage
Protection, overtemperature prote and input are isolated with output.
Output filter circuit 5 is filtered to output voltage so that the output voltage is transformed to satisfactory direct current
Burning voltage, including electric capacity C3, C4, C5, C6, C8 and inductance L2.
24V DC input voitages are by reverse-connection preventing circuit 1 and input short circuit over-current protection circuit 2, then pass through EMC filtered electricals
Enter DC-DC circuit for power conversion 4 behind road 3, by passing through output filter circuit after the HF power conversion by IC1 chips again
The 5V output voltages stablized after 5 filtering.
The DC-DC intelligence insulating power supply module also includes output regulation circuit 6, and output regulation circuit 6 includes being located at institute
R1, R2 of IC1 chip peripheries are stated, output voltage is adjusted so that any one electricity of output voltage stabilization in 4.5V-5.5V
In pressure value.
The DC-DC intelligence insulating power supply module also includes switch S17, and switch S17 is connected to DC-DC intelligence insulating power supplies
Between the IC1 chips of module 4 and the electric capacity C1 of EMC filter circuit 3, the closing of remote controlled IC1 chips and open-minded, so as to
Control output voltage.
PLC power modules disclosed in the present embodiment suitable for input voltage are 24Vdc, output voltage is 5Vdc all types of
PLC programmable controllers, the bottom plate to PLC are powered, and as CPU module, I/O modules, also have other expansion modules etc. to carry
For required power supply.
Preferred embodiment of the present utility model described in detail above.It should be appreciated that the ordinary skill people of this area
Member makes many modifications and variations without creative work can according to design of the present utility model.Therefore, all this technology necks
Technical staff passes through logic analysis, reasoning or limited reality on the basis of existing technology according to design of the present utility model in domain
Available technical scheme is tested, all should be in the protection domain being defined in the patent claims.
Claims (6)
- A kind of 1. DC-DC intelligence insulating power supply modules for PLC power supplies；Characterized in that, the DC-DC intelligence insulating power supply Module include anti-input reverse-connection circuit, input short circuit over-current protection circuit, EMC filter circuit, DC-DC circuit for power conversion and Output filter circuit；The anti-input reverse-connection circuit receives direct current 24V input voltages, carries out reversal connection detection, is transferred to and described inputted flow short-circuit Protection circuit；The input short circuit over-current protection circuit is used to carry out overcurrent protection to input voltage, and input voltage is sent To the EMC filter circuit；The EMC filter circuit is used for the high-frequency noise for absorbing the DC-DC intelligence insulating power supply module, restrains the power supply mould Influence of the high-frequency noise of block to supply line；The DC-DC circuit for power conversion is IC1 chips, the guarantor over-pressed for realizing high frequency conversion, output voltage stabilizing, output overcurrent Shield, overtemperature prote and input are isolated with output；The output filter circuit is filtered to the output voltage of the DC-DC circuit for power conversion so that the output electricity Buckling is changed to satisfactory direct-flow steady voltage.
- 2. DC-DC intelligence insulating power supply module as claimed in claim 1, it is characterised in that the anti-input reverse-connection circuit bag Include anti-reverse diode D1 and fuse FUSE.
- 3. DC-DC intelligence insulating power supply module as claimed in claim 2, it is characterised in that the EMC filter circuit includes electricity Hold C10, C11, C2, C7 and common mode inductance L1.
- 4. DC-DC intelligence insulating power supply module as claimed in claim 1, it is characterised in that the output filter circuit includes Electric capacity C3, C4, C5, C6, C8 and inductance L2.
- 5. DC-DC intelligence insulating power supply module as claimed in claim 1, it is characterised in that the DC-DC intelligence insulating power supply Module also includes output regulation circuit, and the output regulation circuit includes R1, R2 positioned at the IC1 chip peripheries, to output Voltage is adjusted so that output voltage stabilization is on 4.5V-5.5V any one magnitude of voltage.
- 6. DC-DC intelligence insulating power supply module as claimed in claim 1, it is characterised in that the DC-DC intelligence insulating power supply Module also includes switch S1, the switch S1 and is connected to the IC1 chips of the DC-DC intelligence insulating power supply module and the EMC Between the electric capacity C1 of filter circuit, the closing of the remote controlled IC1 chips of switch S1 and open-minded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720334993.5U CN206698112U (en) | 2017-03-31 | 2017-03-31 | A kind of DC DC intelligence insulating power supply modules for PLC power supplies |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720334993.5U CN206698112U (en) | 2017-03-31 | 2017-03-31 | A kind of DC DC intelligence insulating power supply modules for PLC power supplies |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206698112U true CN206698112U (en) | 2017-12-01 |
Family
ID=60441487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720334993.5U Expired - Fee Related CN206698112U (en) | 2017-03-31 | 2017-03-31 | A kind of DC DC intelligence insulating power supply modules for PLC power supplies |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206698112U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110764546A (en) * | 2019-10-10 | 2020-02-07 | 北京麦普兹微电科技有限公司 | Two-wire loop power supply digital display intelligent temperature controller and transmitter integrated instrument |
-
2017
- 2017-03-31 CN CN201720334993.5U patent/CN206698112U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110764546A (en) * | 2019-10-10 | 2020-02-07 | 北京麦普兹微电科技有限公司 | Two-wire loop power supply digital display intelligent temperature controller and transmitter integrated instrument |
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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 |
Granted publication date: 20171201 |
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| CF01 | Termination of patent right due to non-payment of annual fee |