CN207504761U - A kind of DC power supply for being used to wirelessly communicate wifi module - Google Patents
A kind of DC power supply for being used to wirelessly communicate wifi module Download PDFInfo
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- CN207504761U CN207504761U CN201721341971.8U CN201721341971U CN207504761U CN 207504761 U CN207504761 U CN 207504761U CN 201721341971 U CN201721341971 U CN 201721341971U CN 207504761 U CN207504761 U CN 207504761U
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- power supply
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Abstract
A kind of DC power supply for being used to wirelessly communicate wifi module; it is made of power supply control chip and protection circuit and filter circuit; the chopper circuit (3) composed in parallel by inductance L1, capacitance C2 is connected on the input protection circuit (1) that the power input of the power supply control chip (2) is terminated with being made of an anti-lightning strike clamp diode TVS3, resistance R2 and resistance RV3, R1, capacitance C1 and diode D1, the output terminal of power supply control chip (2)；Chopper circuit (is connected to the filter circuit (4) composed in parallel by divider resistance R3, R4 and capacitance C3 on the output terminal of (3).As a result of anti-instantaneous voltage circuit, lightning prevention circuit, filtering chopper circuit etc., therefore it ensure that the reliability and stability of power module power input output entirely wirelessly communicated；And due to the use of power supply control chip SY8088, therefore the component for using entire power module less reduces cost.
Description
Technical field
The utility model is related to DC power supply circuit designing technique, the DC power supply electricity in more particularly to wireless wifi communications
Road.
Background technology
With Internet of Things, smart home concept is more and more burning hoter, and relevant product is also more and more in the market.Therefore it is producing
It is also higher and higher to the stability, reliability and cost requirement of product in product design.Wifi module is wirelessly communicated as current city
The most commonly used wireless communication technique in field, is the largest its reliability and cost requirement.According to statistics, by taking the U.S. as an example：By
In lightning stroke or surge to halt production, leeway, prematurely maintenance of equipment, the direct losses such as more exchange device caused by every profession and trade
Up to 26,000,000,000 U.S. dollars every year.In China, according to the relevent statistics, be under warranty in the electric product to go wrong, 63% be by
It is generated in surge, lightning stroke.Therefore, high reliability, circuit it is brief wireless wifi communication in DC power supply circuit increasingly by
The concern of enterprise, businessman and users.
Utility model content
The purpose of this utility model be to provide north of the city low cost, high reliability for wirelessly communicating the straight of wifi module
Galvanic electricity source.
The DC power supply for being used to wirelessly communicate wifi module, by power supply control chip and protection circuit and filtered electrical
Road forms, it is characterized in that：The power input of the power supply control chip 2 be terminated with by an anti-lightning strike clamp diode TVS3,
The input protection circuit 1 of resistance R2 and resistance RV3, R1, capacitance C1 and diode D1 compositions, resistance in input protection circuit 1
RV3 one end is connected after being connected with the anode of diode D1, the cathode of clamp diode TVS3 with external world input 5V power supplys VCC, electricity
The other end of resistance RV3 is connected with capacitance C1, after the other end of capacitance C1 is connected with the cathode of one end of resistance R1 and diode D1
Access a power input port of power supply control chip 2, another power input of another termination power supply control chip 2 of resistance R1
Port, one end of resistance R2 are connected with the cathode of clamp diode TVS3, and the other end is connected with power output end VDD；Power supply
It controls and is connected to the chopper circuit 3 composed in parallel by inductance L1, capacitance C2 on the output terminal of chip 2；On the output terminal of chopper circuit 3
The filter circuit 4 composed in parallel by divider resistance R3, R4 and capacitance C3 is connected to, specifically, the both ends of capacitance C2 are connected in parallel on resistance
R3 both ends, an end of R4 are connected on the node being connected with R3, C2, and other end ground connection, an end of C3 is connected on what is be connected with R3, C2
On another node, and it is connected with power output end VDD, other end ground connection.
The DC power supply circuit of used wireless communication wifi module, inputs, 3.3V output power supply circuits for 5V.This practicality
Using power supply control chip SILERGY U.S. silicon Cenda SY8088 power supply chips as core in novel, around it is aided with anti-lightning strike electricity
Road, LC chopper circuits and filter circuit composition.5V inputs first pass through input of the lightning prevention circuit as SY8088, SY8088 outputs
3.3V DC power supplies will just be exported by connecting LC chopper circuits, and clutter is filtered out using a filter circuit, be formed final steady
Fixed reliable 3.3V DC power supplies.
The utility model ensures the stability of 3.3V outputs by lightning prevention circuit, SY8088 circuits and filter circuit
And reliability, and the use of SY8088 power supply control chips can reduce the component of periphery as far as possible, reach cost drop
Low purpose.
Description of the drawings
Fig. 1 is the utility model circuit diagram.
Specific embodiment
Fig. 1 is the circuit diagram of one specific embodiment of the utility model.As shown in Figure 1, described be used to wirelessly communicate
The DC power supply of wifi module is made of power supply control chip and protection circuit and filter circuit.Core is controlled in the power supply
The power input of piece 2 is terminated with by an anti-lightning strike clamp diode TVS3, resistance R2 and resistance RV3, R1, capacitance C1 and diode
The input protection circuit 1 of D1 compositions, resistance RV3 one end and anode, the clamp diode of diode D1 in input protection circuit 1
The cathode of TVS3 is connected after being connected with external world input 5V power supplys VCC, and the other end of resistance RV3 is connected with capacitance C1, capacitance C1's
The other end accesses a power input port of power supply control chip 2 after being connected with one end of resistance R1 and the cathode of diode D1
(4), another power input port (port 1) of another termination power supply control chip 2 of resistance R1, one end of resistance R2 and clamper
The cathode of diode TVS3 is connected, and the other end is connected with power output end VDD；It is connected on the output terminal of power supply control chip 2
The chopper circuit 3 composed in parallel by inductance L1, capacitance C2；It is connected on the output terminal of chopper circuit 3 by divider resistance R3, R4 and electricity
Hold the filter circuits 4 that compose in parallel of C3, specifically, the both ends of capacitance C2 are connected in parallel on resistance R3 both ends, an end of R4 be connected on
On the node that R3, C2 are connected, other end ground connection, an end of C3 is connected on another node being connected with R3, C2, and defeated with power supply
Outlet VDD is connected, other end ground connection.
The DC power supply circuit of used wireless communication wifi module, inputs, 3.3V output power supply circuits for 5V.This practicality
Using power supply control chip SILERGY U.S. silicon Cenda SY8088 power supply chips as core in novel, around it is aided with anti-lightning strike electricity
Road, LC chopper circuits and filter circuit composition.5V inputs first pass through input of the lightning prevention circuit as SY8088, SY8088 outputs
3.3V DC power supplies will just be exported by connecting LC chopper circuits, and clutter is filtered out using a filter circuit, be formed final steady
Fixed reliable 3.3V DC power supplies.
VCC ends in DC supply input such as Fig. 1 pass through parallel resistance RV3, then series capacitance C1, access VR1SY8088
4 pin IN ends；VCC parallel diodes D1 also accesses the Pin 4 of SY8088 simultaneously；VCC anti-lightning strike two poles in parallel simultaneously
Pipe TVS3, is connected to ground.Connect a resistance R1 between the pin 4IN ends of SY8088 and its pin 1EN end.The pin of SY8088
2 are connected to ground.After the processing of SY8088 power supply control chips, pin 3LX and pin 5FB go here and there as output terminal, pin 3
Join inductance L1, then shunt capacitance C2, parallel resistance R3, then series resistance R4 is connected to ground；Also, make simultaneously at inductance L1 ends
For transformed power output end VDD；Inductance L1 shunt capacitances C3 is connected to ground simultaneously.In output terminal VDD by parallel resistance R2
It is connect with anti-lightning strike diode TVS3.
In the specific embodiment of Fig. 1, resistance RV3, capacitance C1 and diode D1 composition input protection circuits work as power supply
Input terminal VCC, the transient current that power input generates when interrupting and instantaneously power on suddenly will be stored in capacitance C1, then pass through electricity
Resistance RV3 is discharged, and plays the role of gentle entire circuit input voltage, increases the service life of entire circuit.
Anti-lightning strike diode TVS3 will protect circuit, particularly power supply control chip SY8088, be struck by lightning when circuit or
When being attacked by instantaneous strong voltage, diode TVS3 will be stimulated conducting, be directly grounded electric current, anti-lightning strike so as to play
Effect.
Inductance L1, capacitance C2 and SY8088 form power conversion using LC chopper circuits together in Fig. 1, by input power
The 5V of VCC is converted into 3.3V out-put supplies, and plays the role of filtering simultaneously, makes out-put supply more gentle, preferable.
Since the utility model has used anti-instantaneous voltage circuit, lightning prevention circuit, filtering chopper circuit etc., ensure
The reliability and stability of the power module power input output of entire wireless communication；And control core due to the use of power supply
Piece SY8088, therefore the component for using entire power module is less, so as to also function to certain effect to control cost.
Claims (2)
1. it is a kind of for wirelessly communicating the DC power supply of wifi module, by power supply control chip and protection circuit and filter circuit
Composition, it is characterized in that：The power input of the power supply control chip (2) be terminated with by an anti-lightning strike clamp diode TVS3,
The input protection circuit (1) of resistance R2 and resistance RV3, R1, capacitance C1 and diode D1 compositions, electricity in input protection circuit (1)
Resistance RV3 one end is connected after being connected with the anode of diode D1, the cathode of clamp diode TVS3 with external world input 5V power supplys VCC,
The other end of resistance RV3 is connected with capacitance C1, and the other end of capacitance C1 is connected with the cathode of one end of resistance R1 and diode D1
A power input port of access power supply control chip (2) afterwards, another electricity of another termination power supply control chip (2) of resistance R1
Source input port, one end of resistance R2 are connected with the cathode of clamp diode TVS3, the other end and power output end VDD phases
Even；The chopper circuit (3) composed in parallel by inductance L1, capacitance C2 is connected on the output terminal of power supply control chip (2)；Chopper circuit
(3) filter circuit (4) composed in parallel by divider resistance R3, R4 and capacitance C3, specifically, capacitance C2's are connected on output terminal
Both ends are connected in parallel on resistance R3 both ends, and an end of R4 is connected on the node being connected with R3, C2, other end ground connection, a termination of C3
It is connected on another node being connected with R3, C2, and with power output end VDD, other end ground connection.
2. it is a kind of for wirelessly communicating the DC power supply of wifi module, it is characterized in that：Power supply control chip (2) is U.S.'s silicon Cenda
SY8088 chips.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721341971.8U CN207504761U (en) | 2017-10-18 | 2017-10-18 | A kind of DC power supply for being used to wirelessly communicate wifi module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721341971.8U CN207504761U (en) | 2017-10-18 | 2017-10-18 | A kind of DC power supply for being used to wirelessly communicate wifi module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207504761U true CN207504761U (en) | 2018-06-15 |
Family
ID=62500767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721341971.8U Active CN207504761U (en) | 2017-10-18 | 2017-10-18 | A kind of DC power supply for being used to wirelessly communicate wifi module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207504761U (en) |
-
2017
- 2017-10-18 CN CN201721341971.8U patent/CN207504761U/en active Active
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