CN208806657U - A kind of wireless transmission circuit based on TPS28225 - Google Patents
A kind of wireless transmission circuit based on TPS28225 Download PDFInfo
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- CN208806657U CN208806657U CN201821758330.7U CN201821758330U CN208806657U CN 208806657 U CN208806657 U CN 208806657U CN 201821758330 U CN201821758330 U CN 201821758330U CN 208806657 U CN208806657 U CN 208806657U
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Abstract
The utility model discloses a kind of wireless transmission circuits based on TPS28225, it include: frequency dividing circuit, power amplification circuit, power driving circuit, radio transmitter, wireless receiving circuit, full bridge rectifier and filter circuit, the frequency dividing circuit is connect with power driving circuit, the power driving circuit is connect with power amplification circuit, the power amplification circuit is connect with radio transmitter, the radio transmitter and wireless receiving circuit are wirelessly connected, wireless receiving circuit is connect with full bridge rectifier, the full bridge rectifier is connect with filter circuit；The utility model can be realized wireless power or wireless charging, and working principle is simple, anti-interference ability is good, and efficiency of transmission is high, at low cost, be of great significance to the wireless transmission of energy.
Description
Technical field
The utility model, which can be applied, is wirelessly transferred industry, especially wireless charging field in energy, and in particular to a kind of
Wireless transmission circuit based on TPS28225.
Background technique
With the development of intelligent electric appliance, more and more intelligent electric appliance enters into our life, the wireless power of equipment at
The indispensable a part of smart machine, if it is possible to realize the wireless power or wireless charging of equipment, it will be to ours
It is very big convenient that life is realized, therefore needs a kind of wireless transmission circuit at present to realize wireless power or wireless charging electric work
Energy.
Summary of the invention
Technical problem to be solved in the utility model is to provide one kind in view of the above shortcomings of the prior art to be based on
The wireless transmission circuit of TPS28225, based on the wireless transmission circuit of TPS28225 can be realized equipment wireless power or
Wireless charging, working principle is simple, anti-interference ability is good, and efficiency of transmission is high, at low cost, has to the wireless transmission of energy important
Meaning.
To realize the above-mentioned technical purpose, the technical solution that the utility model is taken are as follows:
A kind of wireless transmission circuit based on TPS28225, comprising: frequency dividing circuit, power amplification circuit, power drive electricity
Road, radio transmitter, wireless receiving circuit, full bridge rectifier and filter circuit, the frequency dividing circuit and power drive electricity
Road connection, the power driving circuit are connect with power amplification circuit, and the power amplification circuit is connect with radio transmitter,
The radio transmitter and wireless receiving circuit are wirelessly connected, and wireless receiving circuit is connect with full bridge rectifier, described complete
Bridge rectification circuit is connect with filter circuit；
The frequency dividing circuit is used to repeatedly divide signal source by chip SN74HC74A, the power drive
Circuit is used for the driving by power drive chip TPS28225DR realization to upper and lower half-bridge, and the power amplification circuit is for leading to
It crosses metal-oxide-semiconductor CSD19533KCS and forms half-bridge up and down, the radio transmitter is used for the series resonance pair by capacitor and inductance
Signal carries out power amplification and converts electrical energy into magnetic field energy and launch, and the wireless receiving circuit is used to pass through capacitor and electricity
The series resonance of sense receives magnetic field energy and magnetic field energy is converted to electric energy, and the full bridge rectifier is used for the sine that will be received
Signal is converted into direct current signal, and the filter circuit is for being filtered the direct current signal received and by filtered direct current
Signal is used for power termination.
As the further improved technical solution of the utility model, the frequency dividing circuit includes chip U1 and chip U2,
The chip U1 and chip U2 is all made of chip SN74HC74A, and the pin 3 of the chip U1 is for receiving 4MHz signal source, institute
The pin 2 and pin 5 for stating chip U1 connect, and pin 6 and pin 11 connection of the chip U1, the pin 7 of the chip U1 connects
Ground line, pin 9 and pin 12 connection of the chip U1, pin 1, pin 4, pin 10,13 and of pin of the chip U1
Pin 14 is respectively connected with+5V power supply, and the pin 8 of the chip U1 is connect with the pin 3 of chip U2, the pin 2 of the chip U2
It is connected with pin 5, the pin 7 of the chip U2 connects ground wire, pin 1, pin 4, pin 10,13 and of pin of the chip U2
Pin 14 is respectively connected with 5V power supply, and the pin 6 of the chip U2 is connect with power driving circuit.
As the further improved technical solution of the utility model, the power driving circuit includes power drive chip
The pin 3 of TPS28225DR, the power drive chip TPS28225DR are connect with the pin 6 of chip U2, power drive chip
The pin 1 and pin 2 of TPS28225DR is connect with one end of capacitor C5, the both ends of capacitor C5 with power drive chip
The pin 8 of TPS28225DR is connected with power amplification circuit, and the pin 4 of the power drive chip TPS28225DR connects ground
The pin 5 of line, power drive chip TPS28225DR is connect with power amplification circuit, and power drive chip TPS28225DR's draws
Foot 6 and pin 7 are all connected with+5V power supply.
As the further improved technical solution of the utility model, the power amplification circuit includes metal-oxide-semiconductor Q1 and MOS
Pipe Q2, the metal-oxide-semiconductor Q1 and metal-oxide-semiconductor Q2 are all made of metal-oxide-semiconductor CSD19533KCS, and the grid and power of the metal-oxide-semiconductor Q1 drives
The pin 8 of dynamic chip TPS28225DR connects, and the drain electrode of metal-oxide-semiconductor Q1 is connected with+5V power supply, the source electrode and nothing of the metal-oxide-semiconductor Q1
The connection of line transmit circuit, the grid of the metal-oxide-semiconductor Q2 are connect with the pin 5 of power drive chip TPS28225DR, metal-oxide-semiconductor Q2's
Drain electrode is connect with the source electrode of metal-oxide-semiconductor Q1, and the source electrode of the metal-oxide-semiconductor Q2 connects ground wire.
As the further improved technical solution of the utility model, the radio transmitter includes by multiple capacitor strings
The inductance coil L1, the capacitor CBB1 for the 21 μ H that the capacitor CBB1 and multiple inductance of the 4.82nF composed in parallel is formed in series and parallel
It is connect with the source electrode of the metal-oxide-semiconductor Q1 of power amplification circuit, the capacitor CBB1 is connect with inductance coil L1, the inductance coil L1
Connect ground wire.
As the further improved technical solution of the utility model, the wireless receiving circuit includes by multiple capacitor strings
The inductance coil L2 for the 21 μ H that the capacitor CBB2 and multiple inductance of the 4.82nF composed in parallel is formed in series and parallel, the capacitor
CBB2 connects with inductance coil L2, and the capacitor CBB2 and inductance coil L2 are connect with full bridge rectifier.
As the further improved technical solution of the utility model, the full bridge rectifier includes diode D1 to two
The anode of pole pipe D4, the diode D1 and the cathode of diode D3 are connect with the capacitor CBB2 of wireless receiving circuit, described
The anode of diode D2 and the cathode of diode D4 are connect with the inductance coil L2 of wireless receiving circuit, the diode D1's
The cathode of cathode and diode D2 are connect with filter circuit, the anode of the diode D3 and diode D4 it is positive with filter
Wave circuit connection.
As the further improved technical solution of the utility model, the filter circuit includes capacitor C8, the capacitor
The cathode of the diode D2 of one end and full bridge rectifier of C8 connects, the other end of the capacitor C8 and the anode of diode D4
Connection, the capacitor C8 is in parallel with power termination.
The utility model has the following beneficial effects: the utility model passes through LC series resonance, the maximum power of Lai Shixian energy
Transmission after being transmitted, is converting DC power supply for AC power source by rectification, filtering, in this way can be negative for subsequent power
It carries and directly uses.This circuit can be realized the wireless power or wireless charging of power termination, and working principle is simple, anti-interference energy
Power is good, efficiency of transmission is high, at low cost, and practical application value with higher may extend to other electric energy wireless transmissions, wireless charging
The industries such as electricity.
Detailed description of the invention
Fig. 1 is the circuit block diagram of the utility model.
Fig. 2 is the circuit theory schematic diagram of the utility model.
Specific embodiment
Specific embodiment of the present utility model is further illustrated below according to Fig. 1 to Fig. 2:
Referring to Fig. 1, a kind of wireless transmission circuit based on TPS28225, comprising: frequency dividing circuit, power amplification circuit, function
Rate driving circuit, radio transmitter, wireless receiving circuit, full bridge rectifier and filter circuit, the frequency dividing circuit and function
The connection of rate driving circuit, the power driving circuit are connect with power amplification circuit, the power amplification circuit and wireless transmission
Circuit connection, the radio transmitter and wireless receiving circuit are wirelessly connected, and wireless receiving circuit and full bridge rectifier connect
It connects, the full bridge rectifier is connect with filter circuit；
The frequency dividing circuit is used to repeatedly divide signal source by chip SN74HC74A, the power drive
Circuit is used for the driving by power drive chip TPS28225DR realization to upper and lower half-bridge, and the power amplification circuit is for leading to
It crosses metal-oxide-semiconductor CSD19533KCS and forms half-bridge up and down, the radio transmitter is used for the series resonance pair by capacitor and inductance
Signal carries out power amplification and converts electrical energy into magnetic field energy and launch, and the wireless receiving circuit is used to pass through capacitor and electricity
The series resonance of sense receives magnetic field energy and magnetic field energy is converted to electric energy, and the full bridge rectifier is used for the sine that will be received
Signal is converted into direct current signal, and the filter circuit is for being filtered the direct current signal received and by filtered direct current
Signal is used for power termination.
In the present embodiment, referring to fig. 2, the frequency dividing circuit includes chip U1 and chip U2, the chip U1 and chip
U2 is all made of chip SN74HC74A, and the pin 3 of the chip U1 pin 2 of the chip U1 and draws for receiving 4M signal source
Foot 5 connects, and pin 6 and pin 11 connection of the chip U1, the pin 7 of the chip U1 connects ground wire, the chip U1's
Pin 9 and pin 12 connect, and pin 1, pin 4, pin 10, pin 13 and the pin 14 of the chip U1 is respectively connected with+5V electricity
Source, the pin 8 of the chip U1 are connect with the pin 3 of chip U2, pin 2 and pin 5 connection of the chip U2, the chip
The pin 7 of U2 connects ground wire, and pin 1, pin 4, pin 10, pin 13 and the pin 14 of the chip U2 is respectively connected with 5V electricity
The pin 6 in source, the chip U2 is connect with power driving circuit.
In the present embodiment, referring to fig. 2, the power driving circuit includes power drive chip TPS28225DR, described
The pin 3 of power drive chip TPS28225DR is connect with the pin 6 of chip U2, the pin of power drive chip TPS28225DR
1 and pin 2 connect with one end of capacitor C5, the both ends of capacitor C5 with the pin 8 of power drive chip TPS28225DR and
The pin 4 of power amplification circuit connection, the power drive chip TPS28225DR connects ground wire, power drive chip
The pin 5 of TPS28225DR is connect with power amplification circuit, and the pin 6 and pin 7 of power drive chip TPS28225DR connects
Connect+5V power supply.
In the present embodiment, referring to fig. 2, the power amplification circuit includes metal-oxide-semiconductor Q1 and metal-oxide-semiconductor Q2, the metal-oxide-semiconductor
Q1 and metal-oxide-semiconductor Q2 is all made of metal-oxide-semiconductor CSD19533KCS, the grid and power drive chip TPS28225DR of the metal-oxide-semiconductor Q1
Pin 8 connect, the drain electrode of metal-oxide-semiconductor Q1 is connected with+5V power supply, and the source electrode of the metal-oxide-semiconductor Q1 is connect with radio transmitter,
The grid of the metal-oxide-semiconductor Q2 is connect with the pin 5 of power drive chip TPS28225DR, and the drain electrode of metal-oxide-semiconductor Q2 is with metal-oxide-semiconductor Q1's
The source electrode of source electrode connection, the metal-oxide-semiconductor Q2 connects ground wire.
In the present embodiment, referring to fig. 2, the radio transmitter includes the 4.82nF being made of in series and parallel multiple capacitors
Capacitor CBB1 and multiple inductance the inductance coil L1, the capacitor CBB1 of the 21 μ H that form in series and parallel and power amplification circuit
The source electrode of metal-oxide-semiconductor Q1 connects, and the capacitor CBB1 is connect with inductance coil L1, the inductance coil L1 connection ground wire.
In the present embodiment, referring to fig. 2, the wireless receiving circuit includes the 4.82nF being made of in series and parallel multiple capacitors
Capacitor CBB2 and the 21 μ H that form in series and parallel of multiple inductance inductance coil L2, the capacitor CBB2 and inductance coil L2 string
Connection, the capacitor CBB2 and inductance coil L2 are connect with full bridge rectifier.
In the present embodiment, referring to fig. 2, the full bridge rectifier includes diode D1 to diode D4, two pole
The anode and the cathode of diode D3 of pipe D1 connect with the capacitor CBB2 of wireless receiving circuit, the diode D2 it is positive with
The cathode of diode D4 is connect with the inductance coil L2 of wireless receiving circuit, the cathode of the diode D1 and diode D2's
Cathode is connect with filter circuit, and the anode of the diode D3 and the anode of diode D4 are connect with filter circuit.
In the present embodiment, referring to fig. 2, the filter circuit includes capacitor C8, and one end of the capacitor C8 and full-bridge are whole
The cathode of the diode D2 of current circuit connects, and the other end of the capacitor C8 is connect with the anode of diode D4, the capacitor C8
For in parallel with power termination.
The wireless transmission circuit of the present embodiment is mainly realized by LC series resonance, as shown in Fig. 2, in order to meet pair
The frequency requirement of power discharging device is needed to the reference frequency for generating a 500kHz, as the input of driving unit, the present embodiment
Using chip SN74HC74A(U1 and U2) as during frequency dividing, using dividing three times, the signal source of 4MHz is divided as 500kHz
Reference signal.In power driving circuit, pass through power drive chip TPS28225DR(U3) and capacitor C5 composition driving signal
Generator can produce two opposite driving signals, guarantees that metal-oxide-semiconductor Q1 and Q2 will not be simultaneously turned on, prevents from burning out power supply.?
Radio transmitter carries out power amplification mainly by the series resonance of capacitor and inductance, can convert electrical energy into as far as possible
Magnetic field energy is launched.Equally, in wireless receiving circuit, and by the series resonance of capacitor and inductance, increase resonance current, mention
Height receives power, can convert electric energy for the magnetic field energy more crossed in this way.Therefore, in order to improve the efficiency of transmission of circuit, wirelessly
Capacitor CBB1, inductance L1 in transmit circuit should be consistent as far as possible with the parameter of the capacitor CBB2 of wireless receiving circuit, inductance L2.?
Full bridge rectifier, passes through 4 diode 1N4007(D1 ~ D4) direct current signal is converted by the sinusoidal signal received.In order to
It improves power supply quality to be filtered in filter unit by the capacitor C8 of 470uF, the DC power supply of output can be made more flat
It is sliding, to be powered or charge for power termination.By test, entire anti-interference is good, the operation is stable, efficiency of transmission
High, long transmission distance is of great significance in wireless transmission industry.
The present embodiment mainly passes through LC series resonance, and the maximum power transfer of Lai Shixian energy after being transmitted, is passing through
AC power source is converted DC power supply by rectification, filtering, can load for subsequent power directly use in this way.The work of this circuit is former
Reason is simple, anti-interference ability is good, efficiency of transmission is high, at low cost, is of great significance to the wireless transmission of energy.
Test shows that the wireless transmission of the energy may be implemented in this circuit, first divides high-frequency signal, gives driving electricity
Road provides benchmark, generates half-bridge driven signal, drives metal-oxide-semiconductor, provides excitation to transmit circuit.Receive the magnetic that circuit will receive
Field energy is converted into electric energy, is passing through rectification, filter circuit, then supply load.This circuit reliable operation, long transmission distance, biography
Defeated high-efficient, practical application value with higher may extend to the industries such as other electric energy wireless transmissions, wireless charging.
The protection scope of the utility model includes but is not limited to embodiment of above, and the protection scope of the utility model is to weigh
Subject to sharp claim, replacement, deformation, the improvement that those skilled in the art that any pair of this technology is made is readily apparent that are each fallen within
The protection scope of the utility model.
Claims (8)
1. a kind of wireless transmission circuit based on TPS28225 characterized by comprising frequency dividing circuit, power amplification circuit, function
Rate driving circuit, radio transmitter, wireless receiving circuit, full bridge rectifier and filter circuit, the frequency dividing circuit and function
The connection of rate driving circuit, the power driving circuit are connect with power amplification circuit, the power amplification circuit and wireless transmission
Circuit connection, the radio transmitter and wireless receiving circuit are wirelessly connected, and wireless receiving circuit and full bridge rectifier connect
It connects, the full bridge rectifier is connect with filter circuit；
The frequency dividing circuit is used to repeatedly divide signal source by chip SN74HC74A, the power driving circuit
For realizing the driving to upper and lower half-bridge by power drive chip TPS28225DR, the power amplification circuit is for passing through
Metal-oxide-semiconductor CSD19533KCS forms half-bridge up and down, and the radio transmitter is used for through the series resonance of capacitor and inductance to letter
It number carries out power amplification and converts electrical energy into magnetic field energy and launch, the wireless receiving circuit is used to pass through capacitor and inductance
Series resonance receive magnetic field energy and magnetic field energy be converted into electric energy, the sinusoidal letter that the full bridge rectifier is used to receive
It number is converted into direct current signal, the filter circuit is for being filtered the direct current signal received and believing filtered direct current
Number for power termination use.
2. the wireless transmission circuit according to claim 1 based on TPS28225, which is characterized in that the frequency dividing circuit
It is all made of chip SN74HC74A including chip U1 and chip U2, the chip U1 and chip U2, the pin 3 of the chip U1 is used
In receiving 4MHz signal source, pin 2 and pin 5 connection of the chip U1, the pin 6 and pin 11 of the chip U1 is connected,
The pin 7 of the chip U1 connects ground wire, pin 9 and pin 12 connection of the chip U1, and the pin 1 of the chip U1 draws
Foot 4, pin 10, pin 13 and pin 14 are respectively connected with+5V power supply, and the pin 8 of the chip U1 and the pin 3 of chip U2 connect
It connects, pin 2 and pin 5 connection of the chip U2, the connection ground wire of pin 7 of the chip U2, the pin 1 of the chip U2,
Pin 4, pin 10, pin 13 and pin 14 are respectively connected with 5V power supply, and the pin 6 and power driving circuit of the chip U2 connects
It connects.
3. the wireless transmission circuit according to claim 2 based on TPS28225, which is characterized in that the power drive
Circuit includes power drive chip TPS28225DR, and the pin 3 and chip U2's of the power drive chip TPS28225DR draws
Foot 6 connects, and the pin 1 and pin 2 of power drive chip TPS28225DR is connect with one end of capacitor C5, the both ends of capacitor C5
It is connect with the pin 8 of power drive chip TPS28225DR and power amplification circuit, the power drive chip
The pin 4 of TPS28225DR connects ground wire, and the pin 5 of power drive chip TPS28225DR is connect with power amplification circuit, function
The pin 6 and pin 7 of rate driving chip TPS28225DR is all connected with+5V power supply.
4. the wireless transmission circuit according to claim 3 based on TPS28225, which is characterized in that the power amplification
Circuit includes that metal-oxide-semiconductor Q1 and metal-oxide-semiconductor Q2, the metal-oxide-semiconductor Q1 and metal-oxide-semiconductor Q2 are all made of metal-oxide-semiconductor CSD19533KCS, described
The grid of metal-oxide-semiconductor Q1 is connect with the pin 8 of power drive chip TPS28225DR, and the drain electrode of metal-oxide-semiconductor Q1 is connected with+5V power supply,
The source electrode of the metal-oxide-semiconductor Q1 is connect with radio transmitter, the grid and power drive chip of the metal-oxide-semiconductor Q2
The pin 5 of TPS28225DR connects, and the drain electrode of metal-oxide-semiconductor Q2 is connect with the source electrode of metal-oxide-semiconductor Q1, the source electrode connection of the metal-oxide-semiconductor Q2
Ground wire.
5. the wireless transmission circuit according to claim 1 based on TPS28225, which is characterized in that the wireless transmission
Circuit includes the electricity of the capacitor CBB1 for the 4.82nF being made of in series and parallel multiple capacitors and 21 μ H that multiple inductance form in series and parallel
The source electrode of the metal-oxide-semiconductor Q1 of sense coil L1, the capacitor CBB1 and power amplification circuit connects, the capacitor CBB1 and inductance coil
L1 connection, the inductance coil L1 connection ground wire.
6. the wireless transmission circuit according to claim 5 based on TPS28225, which is characterized in that the wireless receiving
Circuit includes the electricity of the capacitor CBB2 for the 4.82nF being made of in series and parallel multiple capacitors and 21 μ H that multiple inductance form in series and parallel
Feel coil L2, the capacitor CBB2 connects with inductance coil L2, and the capacitor CBB2 and inductance coil L2 are whole with full-bridge
Current circuit connection.
7. the wireless transmission circuit according to claim 6 based on TPS28225, which is characterized in that the full-bridge rectification
Circuit includes diode D1 to diode D4, and the cathode of the anode of the diode D1 and diode D3 are and wireless receiving circuit
Capacitor CBB2 connection, the diode D2 anode and diode D4 cathode with the inductance coil L2 of wireless receiving circuit
Connection, the cathode of the diode D1 and the cathode of diode D2 connect with filter circuit, the anode of the diode D3 with
The anode of diode D4 is connect with filter circuit.
8. the wireless transmission circuit according to claim 7 based on TPS28225, which is characterized in that the filter circuit
Including capacitor C8, the cathode of the diode D2 of one end and full bridge rectifier of the capacitor C8 is connected, and the capacitor C8's is another
One end is connect with the anode of diode D4, and the capacitor C8 is in parallel with power termination.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821758330.7U CN208806657U (en) | 2018-10-27 | 2018-10-27 | A kind of wireless transmission circuit based on TPS28225 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821758330.7U CN208806657U (en) | 2018-10-27 | 2018-10-27 | A kind of wireless transmission circuit based on TPS28225 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208806657U true CN208806657U (en) | 2019-04-30 |
Family
ID=66239427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821758330.7U Expired - Fee Related CN208806657U (en) | 2018-10-27 | 2018-10-27 | A kind of wireless transmission circuit based on TPS28225 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208806657U (en) |
-
2018
- 2018-10-27 CN CN201821758330.7U patent/CN208806657U/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 |
Granted publication date: 20190430 Termination date: 20191027 |
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| CF01 | Termination of patent right due to non-payment of annual fee |