CN209170314U - It is a kind of for minimizing the function discharge protection circuit of ODU transmission channel - Google Patents
It is a kind of for minimizing the function discharge protection circuit of ODU transmission channel Download PDFInfo
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- CN209170314U CN209170314U CN201821656733.0U CN201821656733U CN209170314U CN 209170314 U CN209170314 U CN 209170314U CN 201821656733 U CN201821656733 U CN 201821656733U CN 209170314 U CN209170314 U CN 209170314U
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- pressure stabilizing
- protection circuit
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Abstract
The utility model discloses a kind of for minimizing the function discharge protection circuit of ODU transmission channel, including 6V voltage input end and 5V voltage input end, and power filter is carried out respectively and obtains pressure stabilizing 5V and pressure stabilizing 6V, pressure stabilizing 5V accesses transforming circuit, it is produced as the reverse voltage of radio-frequency power amplifier power supply, pressure stabilizing 5V and pressure stabilizing 6V also accesses protection circuit, positive polarity voltage is provided by pressure stabilizing 5V control protection electric circuit for radio-frequency power amplifier, and when pressure stabilizing 5V is invalid, then reverse voltage and positive line voltage will not generate, therefore ensure that the bipolar voltage of radio-frequency power amplifier being capable of normal power-up and power-off.The function discharge protection circuit provides required positive bucking voltage both for radio-frequency power amplifier, meets power amplifier power demands, and provides power supply protection function, it is ensured that the reliable and stable work of radio-frequency power amplifier.
Description
Technical field
The utility model belongs to field of communication technology, more particularly to a kind of function suitable for minimizing ODU transmission channel
Discharge protection circuit.
Background technique
In satellite communication equipment, ODU (Out-door Unit) refers to outdoor unit, mainly includes frequency transformation and function
Rate amplification, specific to be divided into transmission channel and receiving channel again, transmission channel typically refers to BUC (Block Up-
Converter), i.e., up-conversion power amplifier, receiving channel are primarily referred to as LNB (Low Noise Block down-
Converter), i.e. low noise amplification, frequency converter.
Radiofrequency signal progress power amplification after usually requiring mixing in transmission channel, and the power supply to power amplifier
It needs to stablize, and power amplifier is usually to be powered by multiple and different voltage, it is necessary to guarantee that these voltages can
It powers, otherwise power amplifier can be damaged when there is a voltage power-off and other voltage also normal power supplies, or even meeting simultaneously
It damages.Therefore, it is necessary to the power supplies to power amplifier to protect.
Utility model content
The utility model is mainly solving the technical problems that provide a kind of power amplifier protection for minimizing ODU transmission channel
Circuit solves the problems, such as to lack power supply power supply protection when power amplifier in the prior art has multiple voltage supply.
In order to solve the above technical problems, the technical solution adopted in the utility model is to provide one kind for minimizing ODU hair
Penetrate the function discharge protection circuit in channel, the function discharge protection circuit includes direct current 6V voltage input end and direct current 5V voltage input end,
The direct current 5V voltage input end obtains pressure stabilizing 5V voltage, the direct current 6V voltage input end after the first power filter network
Pressure stabilizing 6V voltage is obtained after second source filter network, the pressure stabilizing 5V voltage accesses transforming circuit, by the transformation electricity
Road is produced as the reverse voltage of radio-frequency power amplifier power supply, and the pressure stabilizing 5V voltage and the pressure stabilizing 6V voltage also access
Protect circuit, when the pressure stabilizing 5V voltage normally exports, pressure stabilizing 6V voltage Xiang Suoshu through the protection circuit output
Radio-frequency power amplifier provides positive polarity voltage, and when pressure stabilizing 5V power-off, the pressure stabilizing 6V voltage is through the protection circuit
And it disconnects and provides positive polarity voltage to the radio-frequency power amplifier, while the transforming circuit also stops to the radio-frequency power
Amplifier exports the cathode line voltage.
In another embodiment for the function discharge protection circuit that the utility model is used to minimize ODU transmission channel, the change
Volt circuit includes chip LTC1983ES6-5 and chip AD8615AUJZ, and the pressure stabilizing 5V voltage passes through concatenated two inductance electricity
Connect the power end of the chip LTC1983ES6-5, the voltage output end and chip of the chip LTC1983ES6-5
The 2nd pin of AD8615AUJZ is electrically connected, and is in addition also concatenated and is accessed the 3rd of the chip AD8615AUJZ after a resistance and draw
Foot, and the 3rd pin is also electrically connected another resistance, the other end ground connection of the resistance, the 1st pin of the chip AD8615AUJZ
It is electrically connected with the 4th pin, and the 4th pin exports the cathode line voltage to the radio-frequency power amplifier.
It is described negative in another embodiment for the function discharge protection circuit that the utility model is used to minimize ODU transmission channel
Polar voltages are -0.55V.
In another embodiment for the function discharge protection circuit that the utility model is used to minimize ODU transmission channel, the guarantor
Protection circuit includes that triode MMBT3904 and PMOS tube IRF7210PBF, the pressure stabilizing 5V are electrically connected the triode MMBT3904
Base stage, the emitter ground connection of the triode MMBT3904, the first divider resistance of collector series connection and the second divider resistance,
It is electrically connected the grid of the PMOS tube IRF7210PBF between first divider resistance and the second divider resistance, described second
The other end of divider resistance is electrically connected the source electrode of the PMOS tube IRF7210PBF, and described in the pressure stabilizing 6V is also electrically connected
The drain electrode of the source electrode of PMOS tube IRF7210PBF, the PMOS tube IRF7210PBF is electrically connected the radio-frequency power amplifier
Positive pole terminals.
In another embodiment for the function discharge protection circuit that the utility model is used to minimize ODU transmission channel, described the
The resistance value of one divider resistance and the second divider resistance is 50k Ω.
It is described to penetrate in another embodiment for the function discharge protection circuit that the utility model is used to minimize ODU transmission channel
Frequency power amplifier is chip TGA2533.
In another embodiment for the function discharge protection circuit that the utility model is used to minimize ODU transmission channel, described the
One power filter network includes the multiple capacitors being electrically connected with the direct current 5V voltage input end parallel connection, and the capacitor includes first
Filter capacitor, the second filter capacitor, third filter capacitor and the 4th filter capacitor, corresponding capacitance be respectively 100nF,
47uF, 10uF and 1uF.
In another embodiment for the function discharge protection circuit that the utility model is used to minimize ODU transmission channel, described the
Two power filter networks include the multiple capacitors being electrically connected with the direct current 6V voltage input end parallel connection, and the capacitor includes the 5th
Filter capacitor, the 6th filter capacitor and the 7th filter capacitor, corresponding capacitance are 47uF, 10uF and 1uF respectively.
The beneficial effects of the utility model are: the utility model discloses a kind of for minimizing the function of ODU transmission channel
Discharge protection circuit, including 6V voltage input end and 5V voltage input end, and carry out power filter respectively and obtain pressure stabilizing 5V and steady
It presses 6V, pressure stabilizing 5V to access transforming circuit, is produced as the reverse voltage of radio-frequency power amplifier power supply, pressure stabilizing 5V and pressure stabilizing 6V are also
Access protection circuit, is that radio-frequency power amplifier provides positive polarity voltage by pressure stabilizing 5V control protection electric circuit, and work as pressure stabilizing 5V without
When effect, then reverse voltage and positive line voltage will not generate, and therefore ensure that the bipolar voltage energy of radio-frequency power amplifier
Enough normal power-ups and power-off.The function discharge protection circuit provides required positive bucking voltage both for radio-frequency power amplifier, full
Sufficient power amplifier power demands, and provide power supply protection function, it is ensured that the reliable and stable work of radio-frequency power amplifier.
Detailed description of the invention
Fig. 1 is the one embodiment composition block diagram of function discharge protection circuit that the utility model is used to minimize ODU transmission channel；
Fig. 2 is that the utility model is used to minimize the first electricity in another embodiment of function discharge protection circuit of ODU transmission channel
Source filtering netwok figure；
Fig. 3 is that the utility model is used to minimize the second electricity in another embodiment of function discharge protection circuit of ODU transmission channel
Source filtering netwok figure；
Fig. 4 is that the utility model is used to minimize transformation electricity in another embodiment of function discharge protection circuit of ODU transmission channel
Road schematic diagram；
Fig. 5 is that the utility model is used to minimize protection electricity in another embodiment of function discharge protection circuit of ODU transmission channel
Road schematic diagram.
Specific embodiment
For the ease of understanding the utility model, in the following with reference to the drawings and specific embodiments, the utility model is carried out more detailed
Thin explanation.The preferred embodiment of the utility model is given in attached drawing.But the utility model can be with many different
Form is realized, however it is not limited to this specification described embodiment.On the contrary, purpose of providing these embodiments is makes to this
The understanding of the disclosure of utility model is more thorough and comprehensive.
It should be noted that unless otherwise defined, all technical and scientific terms used in this specification with belong to
The normally understood meaning of those skilled in the art of the utility model is identical.In the used in the description of the utility model
Term be only for the purpose of describing specific embodiments be not intended to limitation the utility model.
With reference to the accompanying drawing, each embodiment of the utility model is described in detail.Fig. 1 is the utility model for small
The one embodiment composition schematic diagram of function discharge protection circuit of type ODU transmission channel.As shown in Figure 1, the function discharge protection circuit packet
Direct current 5V voltage input end 11 and direct current 6V voltage input end 12 are included, the direct current 5V voltage input end 11 is filtered by the first power supply
Pressure stabilizing 5V voltage is obtained after wave network 1, the direct current 6V voltage input end 12 obtains pressure stabilizing after second source filter network 2
6V voltage, the pressure stabilizing 5V voltage access transforming circuit 3, are produced as radio-frequency power amplifier 5 by the transforming circuit 3 and power
Reverse voltage, the pressure stabilizing 5V voltage and the pressure stabilizing 6V voltage also access protection circuit 4, when the pressure stabilizing 5V voltage
When normal output, the pressure stabilizing 6V voltage exports through the protection circuit 4 and provides positive polarity to the radio-frequency power amplifier 5
Voltage, when pressure stabilizing 5V power-off, the pressure stabilizing 6V voltage is disconnected through the protection circuit 4 to be amplified to the radio-frequency power
Device 5 provides positive polarity voltage, while the transforming circuit 3 also stops exporting the negative polarity to the radio-frequency power amplifier 5
Voltage.
As can be seen that working as pressure stabilizing 5V when something goes wrong, by protecting circuit that can to supply radio-frequency power amplifier
Positive polarity voltage disconnects, while the reverse voltage for supplying radio-frequency power amplifier can be made also to disconnect by transforming circuit,
Single only positive polarity voltage power supply or only reverse voltage would not occur in the power supply of radio-frequency power amplifier in this way, protect
Controlled power supply or power-off can be synchronized in opposed polarity power voltage supply by having demonstrate,proved radio-frequency power amplifier.
As shown in Fig. 2, the first power filter network, including the first filter capacitor C6, the second filter capacitor C7, third
Filter capacitor C8 and the 4th filter capacitor C9, corresponding capacitance are respectively C6=100nF, C7=47uF, C8=10uF, C9=
1uF, these capacitors are to be connected in parallel on direct current 5V voltage input end, and the other end of these capacitors is grounded.Also, these capacitors are to electricity
Source surge is able to carry out filtering, eliminates and powers on or power off suddenly bring voltage instability and rush of current.
As shown in figure 3, the second source filter network includes the multiple capacitors being electrically connected with direct current 6V voltage input end,
Including the 5th filter capacitor C67 of capacitor, the 6th filter capacitor C68 and the 7th filter capacitor C69, corresponding capacitance is respectively
C67=47uF, C68=10uF, C69=1uF, these capacitors are to be connected in parallel on direct current 6V voltage input end, these capacitors it is another
End is grounded.And it is also electrically connected with a resistance R32 in direct current 6V voltage input end, the other end of resistance R32 connects capacitor
The other end of C70, capacitor C70 are grounded, R32=51 Ω, C70=100nF.And it is also electrically connected in direct current 6V voltage input end
There is a resistance R32, the other end of resistance R32 connects capacitor C70, the other end ground connection of capacitor C70, R32=51 Ω, C70=
100nF。
Further, as shown in figure 4, the transforming circuit includes chip LTC1983ES6-5 and chip AD8615AUJZ,
The pressure stabilizing 5V voltage is electrically connected the power end of the chip LTC1983ES6-5 by concatenated inductance L15 and L14.The power supply
End is also electrically connected shunt capacitance C82 and is grounded, and the voltage output end of the chip then passes through potential-divider network and connects chip
AD8615AUJZ.Specifically, access chip after the voltage output end series resistor R35 of chip LTC1983ES6-5
The 3rd pin of AD8615AUJZ, and the pin is also electrically connected another resistance R36, and the other end of resistance R36 is grounded, and chip
The voltage output end of LTC1983ES6-5 is also directly electrically connected with the 2nd pin of chip AD8615AUJZ.Chip AD8615AUJZ
The 1st pin and the 4th pin electrical connection, and the 4th pin as voltage output pin be also connected with shunt capacitance C86 with
C85, C85=0.1uF, C86=1nF.4th pin output voltage is the negative line exported to radio-frequency power amplifier
Voltage.
Preferably, chip AD8615AUJZ output negative pole voltage, the reverse voltage are -0.55V.
Further, as shown in figure 5, the protection circuit includes triode MMBT3904 and PMOS tube IRF7210PBF,
The base stage of the triode MMBT3904 is electrically connected after one resistance R34 of the pressure stabilizing 5V concatenation, the triode MMBT3904's
Emitter ground connection, collector series connection the first divider resistance R31 and the second divider resistance R30, the first divider resistance R31 and the
The grid of the PMOS tube IRF7210PBF, the other end of the second divider resistance R30 are electrically connected between two divider resistance R30
It is electrically connected the source electrode of the PMOS tube IRF7210PBF, and the pressure stabilizing 6V is also electrically connected the PMOS tube IRF7210PBF's
Source electrode, the drain electrode of the PMOS pipe IRF7210PBF are electrically connected the positive pole terminals of the radio-frequency power amplifier.
Preferably, the resistance value of the first divider resistance R31 and the second divider resistance R30 are 50k Ω.Here when steady
When pressing 5V normal, triode MMBT3904 conducting, pressure stabilizing 6V passes through the first divider resistance R31 and the second divider resistance R30, so that
Pressure difference is generated between the grid G and source S of PMOS tube IRF7210PBF, so that pressure stabilizing 6V electricity be connected to drain D, and then to radio frequency
Power amplifier exports 6V voltage, if pressure stabilizing 5V electricity does not add, triode MMBT3904 is not turned on, and divider resistance 31 will not
It works, without pressure difference between grid G and source S, PMOS tube IRF7210PBF is not turned on, and drain D will not export pressure stabilizing 6V voltage.
In addition, the radio-frequency power amplifier selected here is TGA2533, two kinds of polar power supplys of needs of the chip
Power supply, is 6V and -0.55V respectively.
It is possible thereby to it is further seen that, it powers, bears for the bipolar power supply of radio-frequency power amplifier chip TGA2533
Voltage -0.55V is divided after chip LTC1983ES6-5 and chip AD8615AUJZ carry out turning pressure by pressure stabilizing 5V and is obtained, this
Negative pressure will not be generated in the case where no pressure stabilizing 5V applies, simultaneously because the effect of protection circuit, powers to chip TGA2533
Pressure stabilizing 6V will not be applied on the chip, thus ensure to radio-frequency power amplifier chip TGA2533 bipolarity power
Synchronous protection characteristic.
Based on above embodiments, the power amplifier that the utility model discloses a kind of for minimizing ODU transmission channel protects electricity
Road, including 6V voltage input end and 5V voltage input end, and carry out power filter respectively and obtain pressure stabilizing 5V and pressure stabilizing 6V, pressure stabilizing
5V accesses transforming circuit, is produced as the reverse voltage of radio-frequency power amplifier power supply, pressure stabilizing 5V and pressure stabilizing 6V also access protection
Circuit provides positive polarity voltage by pressure stabilizing 5V control protection electric circuit for radio-frequency power amplifier, and when pressure stabilizing 5V is invalid, then it bears
Polar voltages and positive line voltage will not generate, and therefore ensure that the bipolar voltage of radio-frequency power amplifier being capable of normal power-up
And power-off.The function discharge protection circuit provides required positive bucking voltage both for radio-frequency power amplifier, meets power amplifier power supply
Demand, and provide power supply protection function, it is ensured that the reliable and stable work of radio-frequency power amplifier.
The above description is only the embodiments of the present invention, and therefore it does not limit the scope of the patent of the utility model, all
Equivalent structure transformation made based on the specification and figures of the utility model, it is relevant to be applied directly or indirectly in other
Technical field is included in the scope of patent protection of the utility model.
Claims (6)
1. a kind of for minimizing the function discharge protection circuit of ODU transmission channel, which is characterized in that the function discharge protection circuit includes
Direct current 6V voltage input end and direct current 5V voltage input end, the direct current 5V voltage input end is after the first power filter network
Pressure stabilizing 5V voltage is obtained, the direct current 6V voltage input end obtains pressure stabilizing 6V voltage after second source filter network, described
Pressure stabilizing 5V voltage accesses transforming circuit, and the reverse voltage of radio-frequency power amplifier power supply, institute are produced as by the transforming circuit
It states pressure stabilizing 5V voltage and the pressure stabilizing 6V voltage also accesses protection circuit, it is described steady when the pressure stabilizing 5V voltage normally exports
6V voltage is pressed to provide positive polarity voltage through the protection circuit output and to the radio-frequency power amplifier, when the pressure stabilizing 5V is disconnected
When electric, the pressure stabilizing 6V voltage disconnects to the radio-frequency power amplifier through the protection circuit and provides positive polarity voltage, together
Shi Suoshu transforming circuit also stops exporting the reverse voltage to the radio-frequency power amplifier；
The transforming circuit includes chip LTC1983ES6-5 and chip AD8615AUJZ, and the pressure stabilizing 5V voltage passes through concatenated
Two inductance are electrically connected the power end of the chip LTC1983ES6-5, the voltage output end of the chip LTC1983ES6-5 with
The 2nd pin of chip AD8615AUJZ is electrically connected, and is in addition also concatenated and is accessed the 3rd of the chip AD8615AUJZ after a resistance and draw
Foot, the 1st pin of the chip AD8615AUJZ and the electrical connection of the 4th pin, and the 4th pin is put to the radio-frequency power
Big device exports the reverse voltage；
The protection circuit includes triode MMBT3904 and PMOS tube IRF7210PBF, the pressure stabilizing 5V voltage connection described three
The base stage of pole pipe MMBT3904, the emitter ground connection of the triode MMBT3904, the first divider resistance of collector series connection and the
Two divider resistances are electrically connected the grid of the PMOS tube IRF7210PBF between first divider resistance and the second divider resistance
Pole, the other end of second divider resistance are electrically connected the source electrode of the PMOS tube IRF7210PBF, and pressure stabilizing 6V electricity
Pressure is also electrically connected the source electrode of the PMOS tube IRF7210PBF, and the drain electrode of the PMOS tube IRF7210PBF is electrically connected the radio frequency
The positive pole terminals of power amplifier.
2. according to claim 1 for minimizing the function discharge protection circuit of ODU transmission channel, which is characterized in that described
Reverse voltage is -0.55V.
3. according to claim 2 for minimizing the function discharge protection circuit of ODU transmission channel, which is characterized in that described
The resistance value of first divider resistance and the second divider resistance is 50k Ω.
4. according to claim 3 for minimizing the function discharge protection circuit of ODU transmission channel, which is characterized in that described
Radio-frequency power amplifier is TGA2533.
5. according to claim 4 for minimizing the function discharge protection circuit of ODU transmission channel, which is characterized in that described
First power filter network includes the multiple capacitors being electrically connected with the direct current 5V voltage input end parallel connection, and the capacitor includes the
One filter capacitor, the second filter capacitor, third filter capacitor and the 4th filter capacitor, corresponding capacitance be respectively 100nF,
47uF, 10uF and 1uF.
6. according to claim 5 for minimizing the function discharge protection circuit of ODU transmission channel, which is characterized in that described
Second source filter network includes the multiple capacitors being electrically connected with the direct current 6V voltage input end parallel connection, and the capacitor includes the
Five filter capacitors, the 6th filter capacitor and the 7th filter capacitor, corresponding capacitance are 47uF, 10uF and 1uF respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821656733.0U CN209170314U (en) | 2018-10-12 | 2018-10-12 | It is a kind of for minimizing the function discharge protection circuit of ODU transmission channel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821656733.0U CN209170314U (en) | 2018-10-12 | 2018-10-12 | It is a kind of for minimizing the function discharge protection circuit of ODU transmission channel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209170314U true CN209170314U (en) | 2019-07-26 |
Family
ID=67333440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821656733.0U Active CN209170314U (en) | 2018-10-12 | 2018-10-12 | It is a kind of for minimizing the function discharge protection circuit of ODU transmission channel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209170314U (en) |
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2018
- 2018-10-12 CN CN201821656733.0U patent/CN209170314U/en active Active
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