CN208955899U - A kind of jamproof 24V turns 5V DC voltage module - Google Patents
A kind of jamproof 24V turns 5V DC voltage module Download PDFInfo
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- CN208955899U CN208955899U CN201821809007.8U CN201821809007U CN208955899U CN 208955899 U CN208955899 U CN 208955899U CN 201821809007 U CN201821809007 U CN 201821809007U CN 208955899 U CN208955899 U CN 208955899U
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Abstract
The utility model relates to a kind of jamproof 24V to turn 5V DC voltage module, its innovative point is: including power protecting circuit, level-one filter circuit, DC-DC module, low-frequency filter circuit and high-frequency filter circuit, the input terminal of the power protecting circuit is direct current 24V voltage connection, the output end of power protecting circuit is electrically connected with the input terminal of level-one filter circuit, the output end of level-one filter circuit is electrically connected with the input terminal of DC-DC module, the output end of DC-DC module is electrically connected with the input terminal of low-frequency filter circuit, the input terminal of high-frequency filter circuit is electrically connected with the output end of low-frequency filter circuit, the output end of high-frequency filter circuit is direct current 5V voltage output connection terminal.Not only structure is more reasonable for the utility model, but also can be realized multiple anti-interference.
Description
Technical field
The utility model relates to a kind of DC voltage modules, and in particular to a kind of jamproof 24V turns 5V direct current pressing mold
Block.
Background technique
Circuit interference is the eternal project of circuit design, and power supply is the main entrance of circuit board interference, therefore designs power supply
It is anti-interference particularly significant.The jamproof performance of power supply is relatively poor in prior art, so that power supply interferes not circuit board
Can be ignored, therefore, urgent need design one kind can multistage jamproof power supply, make circuit board no longer by power supply disturbance, it is ensured that electricity
The stability that modules work in the plate of road.
Utility model content
The purpose of this utility model is: it is more reasonable to provide a kind of not only structure, but also can be realized multiple jamproof
24V turns 5V DC voltage module.
In order to achieve the above object, the technical solution of the present invention is:, and a kind of jamproof 24V turns 5V direct current pressing mold
Block, innovative point are: filtering including power protecting circuit, level-one filter circuit, DC-DC module, low-frequency filter circuit and high frequency
Wave circuit, the input terminal of the power protecting circuit are direct current 24V voltage connection, the output end of power protecting circuit and one
The input terminal electrical connection of grade filter circuit, the output end of level-one filter circuit are electrically connected with the input terminal of DC-DC module, DC-DC
The output end of module is electrically connected with the input terminal of low-frequency filter circuit, the input terminal of high-frequency filter circuit and low-frequency filter circuit
Output end electrical connection, the output end of high-frequency filter circuit are direct current 5V voltage output connection terminal.
In the above-mentioned technical solutions, the power protecting circuit includes that current foldback circuit and power supply prevent reversed protection electricity
Road, the input terminal of the current foldback circuit are direct current 24V voltage connection, the output end of the current foldback circuit with
Power supply prevents the input terminal electrical connection of reversed protection circuit, and the output end and power supply of the current foldback circuit prevent reversed protection circuit
Input terminal and output end corresponding with level-one filter circuit connecting pin electrical connection respectively.
In the above-mentioned technical solutions, the current foldback circuit includes overcurrent protection FU1, and power supply prevents reversed protection circuit packet
Diode D1 is included, the input terminal of the overcurrent protection FU1 is direct current 24V voltage connection, the output end of overcurrent protection FU1
Be electrically connected with one end of diode D1, the both ends of the output end of overcurrent protection FU1 and diode D1 respectively with level-one filter circuit
Corresponding connecting pin electrical connection.
In the above-mentioned technical solutions, the level-one filter circuit includes primary filtering C2, transient state inhibition TVS1, ㄇ type filtering
Device, capacitor C3, diode D2 and resistance R1, one end of the primary filtering C2, transient state inhibit one end and the filtering of ㄇ type of TVS1
Device connecting pin electrical connection corresponding with power protecting circuit respectively, and the other end of primary filtering C2, transient state inhibition TVS1's is another
One end and ㄇ mode filter are electrically connected with one end of capacitor C3 respectively, the other end of the capacitor C3 and one end electricity of diode D2
Connection, the other end of diode D2 are electrically connected with one end of resistance R1, and the other end of resistance R1 is corresponding with DC-DC module to be connected
End electrical connection.
In the above-mentioned technical solutions, the ㄇ mode filter has inductance L1, capacitor C4 and capacitor C5 to constitute.
In the above-mentioned technical solutions, the low-frequency filter circuit includes capacitor C7, the both ends of the capacitor C7 respectively with DC-
DC module and the corresponding connecting pin electrical connection of high-frequency filter circuit.
In the above-mentioned technical solutions, the high-frequency filter circuit includes capacitor C16, C17 and the C18 being connected in parallel, described
The connecting pin electrical connection corresponding with low-frequency filter circuit respectively of the both ends of capacitor C16.
Good effect possessed by the utility model is: turning 5V DC voltage using the jamproof 24V of the utility model
After module, since the utility model includes power protecting circuit, level-one filter circuit, DC-DC module, low-frequency filter circuit and height
Frequency filter circuit, the input terminal of the power protecting circuit are direct current 24V voltage connection, the output end of power protecting circuit
It being electrically connected with the input terminal of level-one filter circuit, the output end of level-one filter circuit is electrically connected with the input terminal of DC-DC module,
The output end of DC-DC module is electrically connected with the input terminal of low-frequency filter circuit, the input terminal and low frequency filtering of high-frequency filter circuit
The output end of circuit is electrically connected, and the output end of high-frequency filter circuit is direct current 5V voltage output connection terminal, the utility model
Power protecting circuit can play overcurrent protection, and 24V input power can be prevented reversed, to protect DC-DC module,
The level-one filter circuit can be realized primary filtering and inhibit high-frequency and high-voltage disturbing pulse, and DC-DC module can be by 24V voltage
5V voltage is converted to, the low-frequency filter circuit can realize low frequency filtering to 5V voltage, and high-frequency filter circuit can be again to low
Frequently filtered 5V voltage realizes High frequency filter, and the utility model can realize that 3 weights are anti-interference to 24V input power, effectively and high
Effect solves interference of the power supply to circuit board, meanwhile, not only structure is more reasonable for the utility model, but also cost is low.
Detailed description of the invention
Fig. 1 is a kind of circuit theory schematic diagram of specific embodiment of the utility model.
Specific embodiment
Below in conjunction with attached drawing and the embodiment provided, the utility model is further described, but is not limited to
This.
As shown in Figure 1, a kind of jamproof 24V turns 5V DC voltage module, including the filtering of power protecting circuit 1, level-one
Circuit 2, DC-DC module 3, low-frequency filter circuit 4 and high-frequency filter circuit 5, the input terminal of the power protecting circuit 1 are direct current
24V voltage connection, the output end of power protecting circuit 1 are electrically connected with the input terminal of level-one filter circuit 2, level-one filtered electrical
The output end on road 2 is electrically connected with the input terminal of DC-DC module 3, the input of the output end and low-frequency filter circuit 4 of DC-DC module 3
End electrical connection, the input terminal of high-frequency filter circuit 5 is electrically connected with the output end of low-frequency filter circuit 4, high-frequency filter circuit 5 it is defeated
Outlet is direct current 5V voltage output connection terminal.Wherein, WRB2405S-3WR2 is DC-DC module, it is the core of the circuit.
As shown in Figure 1, in order to play overcurrent protection to input voltage, and prevent input power reversed, it is right
DC-DC module 3 plays a protective role, and the power protecting circuit 1 includes that current foldback circuit 11 and power supply prevent reversed protection electricity
Road 12, the input terminal of the current foldback circuit 11 are direct current 24V voltage connection, the current foldback circuit 11 it is defeated
Outlet prevents that the input terminal of reversed protection circuit 12 is electrically connected with power supply, and the output end and power supply of the current foldback circuit 11 are anti-to be connect
The connecting pin electrical connection corresponding with level-one filter circuit 2 respectively of the input terminal and output end of anti-protection circuit 12.
As shown in Figure 1, the current foldback circuit 11 is protected including overcurrent in order to enable the utility model structure is more reasonable
FU1 is protected, power supply prevents that reversed protection circuit 12 includes diode D1, and the input terminal of the overcurrent protection FU1 is direct current 24V voltage
The output end of connection terminal, overcurrent protection FU1 is electrically connected with one end of diode D1, the output end of overcurrent protection FU1 and two poles
The connecting pin electrical connection corresponding with level-one filter circuit 2 respectively of the both ends of pipe D1.
As shown in Figure 1, in order to carry out primary filtering to input voltage, the level-one filter circuit 2 include primary filtering C2,
Transient state inhibits TVS1, ㄇ mode filter, capacitor C3, diode D2 and resistance R1, one end of the primary filtering C2, transient state to inhibit
One end of TVS1 and the connecting pin electrical connection corresponding with power protecting circuit 1 respectively of ㄇ mode filter, and primary filtering C2's is another
One end, transient state inhibit the other end of TVS1 and ㄇ mode filter to be electrically connected respectively with one end of capacitor C3, and the capacitor C3's is another
One end is electrically connected with one end of diode D2, and the other end of diode D2 is electrically connected with one end of resistance R1, and resistance R1's is another
Hold connecting pin electrical connection corresponding with DC-DC module 3.The transient state inhibits TVS1 for inhibiting high-frequency and high-voltage disturbing pulse,
In, the ㄇ mode filter has inductance L1, capacitor C4 and capacitor C5 to constitute, and can inhibit various interference.
As shown in Figure 1, the low-frequency filter circuit 4 includes capacitor C7, the capacitor C7's in order to realize second of filtering
Both ends connecting pin electrical connection corresponding with DC-DC module 3 and high-frequency filter circuit 5 respectively.
As shown in Figure 1, in order to realize third time filter, the high-frequency filter circuit 5 include be connected in parallel capacitor C16,
C17 and C18, the connecting pin electrical connection corresponding with low-frequency filter circuit 4 respectively of the both ends of the capacitor C16.
When the utility model is used, the input direct-current 24V voltage between VIN+ and VIN-, 1 energy of power protecting circuit
Overcurrent protection is enough played, and 24V input power can be prevented reversed, to protect DC-DC module 3, the level-one filtering
Circuit 2 can be realized primary filtering and inhibit high-frequency and high-voltage disturbing pulse, and 24V voltage can be converted to 5V electricity by DC-DC module 3
Pressure, the low-frequency filter circuit 4 can to 5V voltage realize low frequency filtering, high-frequency filter circuit 5 can again to low frequency filtering after
5V voltage realize High frequency filter, the utility model can to 24V input power realize 3 weight it is anti-interference, effectively and efficiently solve
Interference of the power supply to circuit board, meanwhile, not only structure is more reasonable for the utility model, but also cost is low.
It is enlightenment, through the above description, related work people with the above-mentioned desirable embodiment according to the utility model
Member can carry out various changes and amendments in the range of without departing from this item utility model technical idea completely.This item is real
It is not limited to the contents of the specification with novel technical scope, it is necessary to its technology is determined according to scope of the claims
Property range.
Claims (7)
1. a kind of jamproof 24V turns 5V DC voltage module, it is characterised in that: filtered including power protecting circuit (1), level-one
Circuit (2), DC-DC module (3), low-frequency filter circuit (4) and high-frequency filter circuit (5), the power protecting circuit (1) it is defeated
Entering end is direct current 24V voltage connection, the output end of power protecting circuit (1) and the input terminal electricity of level-one filter circuit (2)
Connection, the output end of level-one filter circuit (2) are electrically connected with the input terminal of DC-DC module (3), the output end of DC-DC module (3)
It is electrically connected with the input terminal of low-frequency filter circuit (4), the input terminal of high-frequency filter circuit (5) is defeated with low-frequency filter circuit (4)
Outlet electrical connection, the output end of high-frequency filter circuit (5) are direct current 5V voltage output connection terminal.
2. jamproof 24V according to claim 1 turns 5V DC voltage module, it is characterised in that: the power protection
Circuit (1) includes current foldback circuit (11) and power supply prevents reversed protection circuit (12), the current foldback circuit (11) it is defeated
Entering end is direct current 24V voltage connection, and the output end and power supply of the current foldback circuit (11) prevent reversed protection circuit
(12) input terminal electrical connection, the output end and power supply of the current foldback circuit (11) prevent the input of reversed protection circuit (12)
End and output end connecting pin electrical connection corresponding with level-one filter circuit (2) respectively.
3. jamproof 24V according to claim 2 turns 5V DC voltage module, it is characterised in that: the overcurrent protection
Circuit (11) includes overcurrent protection FU1, and power supply prevents that reversed protection circuit (12) includes diode D1, the overcurrent protection FU1's
Input terminal is direct current 24V voltage connection, and the output end of overcurrent protection FU1 is electrically connected with one end of diode D1, and overcurrent is protected
The connecting pin electrical connection corresponding with level-one filter circuit (2) respectively of the both ends of the output end and diode D1 that protect FU1.
4. jamproof 24V according to claim 1 turns 5V DC voltage module, it is characterised in that: the level-one filtering
Circuit (2) includes that primary filtering C2, transient state inhibit TVS1, ㄇ mode filter, capacitor C3, diode D2 and resistance R1, it is described just
One end of grade filtering C2, transient state inhibit one end and the connection corresponding with power protecting circuit (1) respectively of ㄇ mode filter of TVS1
End electrical connection, and the other end of primary filtering C2, the other end of transient state inhibition TVS1 and ㄇ mode filter are respectively with capacitor C3's
One end electrical connection, the other end of the capacitor C3 are electrically connected with one end of diode D2, the other end and resistance R1 of diode D2
One end electrical connection, corresponding with DC-DC module (3) connecting pin of the other end of resistance R1 is electrically connected.
5. jamproof 24V according to claim 4 turns 5V DC voltage module, it is characterised in that: the ㄇ type filtering
Device has inductance L1, capacitor C4 and capacitor C5 to constitute.
6. jamproof 24V according to claim 1 turns 5V DC voltage module, it is characterised in that: the low frequency filtering
Circuit (4) includes capacitor C7, the both ends of the capacitor C7 respectively with DC-DC module (3) and high-frequency filter circuit (5) are corresponding connects
Connect end electrical connection.
7. jamproof 24V according to claim 1 turns 5V DC voltage module, it is characterised in that: the High frequency filter
Circuit (5) includes capacitor C16, C17 and the C18 being connected in parallel, the both ends of the capacitor C16 respectively with low-frequency filter circuit (4)
Corresponding connecting pin electrical connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821809007.8U CN208955899U (en) | 2018-11-05 | 2018-11-05 | A kind of jamproof 24V turns 5V DC voltage module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821809007.8U CN208955899U (en) | 2018-11-05 | 2018-11-05 | A kind of jamproof 24V turns 5V DC voltage module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208955899U true CN208955899U (en) | 2019-06-07 |
Family
ID=66744048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821809007.8U Active CN208955899U (en) | 2018-11-05 | 2018-11-05 | A kind of jamproof 24V turns 5V DC voltage module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208955899U (en) |
-
2018
- 2018-11-05 CN CN201821809007.8U patent/CN208955899U/en active Active
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