CN110138205A - A kind of multichannel aerial camera low noise power supply component - Google Patents
A kind of multichannel aerial camera low noise power supply component Download PDFInfo
- Publication number
- CN110138205A CN110138205A CN201910362373.6A CN201910362373A CN110138205A CN 110138205 A CN110138205 A CN 110138205A CN 201910362373 A CN201910362373 A CN 201910362373A CN 110138205 A CN110138205 A CN 110138205A
- Authority
- CN
- China
- Prior art keywords
- isolation circuit
- power supply
- chip
- dcdc
- low noise
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/44—Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/65—Control of camera operation in relation to power supply
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Camera Bodies And Camera Details Or Accessories (AREA)
- Studio Devices (AREA)
- Dc-Dc Converters (AREA)
Abstract
The invention belongs to aerial camera design field more particularly to a kind of multichannel aerial camera low noise power supply components, including power input interface, DCDC chip, LDO chip, isolation circuit；The power input interface is electrically connected with the DCDC chip input terminal；The DCDC chip includes the first DCDC chip, and the first DCDC chip output and the first LDO chip input terminal electrical links, the first LDO chip output are connected with the first isolation circuit input terminal；First isolation circuit point, 6 tunnels export analog power VDD_PLL.Beneficial effect is that a kind of multichannel aerial camera low noise power supply of the invention designs and method.It is designed using power circuit of the four step design methods to six channel aerial cameras, proposes the mode of DCDC+LDO+ isolation circuit, guarantee that noise is effectively isolated；It has been multiplexed partial power, the design of original 24 LDO is reduced to 7, improves power-efficient, while ensure that small-sized and inexpensive advantage.
Description
Technical field
The invention belongs to aerial camera design field more particularly to a kind of multichannel aerial camera low noise power supply groups
Part.
Background technique
In recent years, multichannel aerial camera is with advantages such as low cost, maneuverability, quick responses, in wisdom agricultural, emergency
The fields such as remote sensing, spectrographic detection show very wide application prospect.The superiority and inferiority intuition of power supply design determines multichannel
The picture noise of aerial camera is horizontal, how on the basis of guaranteeing small-sized and inexpensive, make detector noise itself and
Crosstalk noise between detector is minimum, is aerial camera probe assembly all the time to improve the imaging quality of aerial camera
The difficult point of design.
Based on this, need it is a kind of it is at low cost, multichannel aerial camera low noise power supply component with high accuracy is existing to solve
The problem of technology.
Summary of the invention
The present invention provides a kind of multichannel aerial camera low noise power supply components, deposit in current background technique to solve
The problem of.
A kind of multichannel aerial camera low noise power supply component, including power input interface, DCDC chip, LDO chip, every
From circuit；The power input interface is electrically connected with the DCDC chip input terminal；
The DCDC chip includes the first DCDC chip, and the first DCDC chip output and the first LDO chip input
Electrical links are held, the first LDO chip output is connected with the first isolation circuit input terminal；The output of first isolation circuit point, 6 tunnels
Analog power VDD_PLL.
Preferably, the first DCDC chip input terminal voltage uses 5V, and the first DCDC chip output voltage is
3.3V。
Further, the first DCDC chip output also passes through two the 2nd LDO chips in parallel and is isolated with second
Circuit series connection, second isolation circuit point, 6 tunnels export analog power VAA.
Further, the first DCDC chip output also passes through two the 3rd LDO chips in parallel and is isolated with third
Circuit series connection, 6 tunnels of the third isolation circuit point export digital power VDD_IO.
Further, the first DCDC chip output also passes through two the 4th LDO chips in parallel and is isolated with the 4th
Circuit series connection, 6 tunnels of the third isolation circuit point export digital power VDD.
Preferably, first isolation circuit, the second isolation circuit, third isolation circuit, the 4th isolation circuit output end
It is 2.8V.
Further, the DCDC chip further includes the 2nd DCDC chip, and the 2nd DCDC chip output is directly defeated
It powers out to FPGA.
Preferably, the 2nd DCDC chip output voltage is 1.2V.
Further, the DCDC chip further includes the 3rd DCDC chip, and the 3rd DCDC chip output is through being isolated
It powers respectively to FPGA and DDR memory after circuit, while special chip TPS518200 having been used to generate the VTTVREF that DDR is used
Power supply and VTTDDR power supply.
Preferably, the 3rd DCDC chip output voltage is 1.5V.
Further, the multichannel aerial camera low noise power supply component further includes soft starting circuit, the soft start
Circuit is arranged between the power input interface and the DCDC chip, prevents current surge.
Preferably, the soft starting circuit uses model TPC8120.
Further, the isolation circuit includes magnetic bead, capacitor, magnetic bead described in isolation circuit input terminal capital with it is described
Isolation circuit output end is connected；Described capacitor one end is connected with the magnetic bead, and the other end is connected with ground line.
The invention has the benefit that a kind of multichannel aerial camera low noise power supply design of the invention and method.It answers
It is designed with power circuit of the four step design methods to six channel aerial cameras, proposes the mode of DCDC+LDO+ isolation circuit,
Guarantee that noise is effectively isolated；It has been multiplexed partial power, the design of original 24 LDO is reduced to 7, has improved power supply effect
Rate, while ensure that small-sized and inexpensive advantage.
Detailed description of the invention
Fig. 1 is low noise assembly connecting structure schematic diagram of the present invention；
Fig. 2 is isolation circuit attachment structure schematic diagram of the present invention；
Fig. 3 is noise analysis figure before optimizing；
Fig. 4 is noise analysis figure after optimization.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
Embodiment 1
As shown in Figs 1-4, a kind of multichannel aerial camera low noise power supply component, including power input interface, DCDC core
Piece, LDO chip, isolation circuit；The power input interface is electrically connected with the DCDC chip input terminal；
The DCDC chip includes the first DCDC chip, and the first DCDC chip output and the first LDO chip input
Electrical links are held, the first LDO chip output is connected with the first isolation circuit input terminal；The output of first isolation circuit point, 6 tunnels
Analog power VDD_PLL.
Preferably, the first DCDC chip input terminal voltage uses 5V, and the first DCDC chip output voltage is
3.3V。
Described in the present embodiment, the first DCDC chip output also passes through two the 2nd LDO chips in parallel and
The series connection of two isolation circuits, second isolation circuit point, 6 tunnels export analog power VAA.
Described in the present embodiment, the first DCDC chip output also passes through two the 3rd LDO chips in parallel and
The series connection of three isolation circuits, 6 tunnels of the third isolation circuit point export digital power VDD_IO.
Described in the present embodiment, the first DCDC chip output also passes through two the 4th LDO chips in parallel and
The series connection of four isolation circuits, 6 tunnels of the third isolation circuit point export digital power VDD.
Preferably, first isolation circuit, the second isolation circuit, third isolation circuit, the 4th isolation circuit output end
It is 2.8V.
Described in the present embodiment, the DCDC chip further includes the 2nd DCDC chip, the 2nd DCDC chip output
It is directly output to FPGA power supply.
Preferably, the 2nd DCDC chip output voltage is 1.2V.
Described in the present embodiment, the DCDC chip further includes the 3rd DCDC chip, the 3rd DCDC chip output
It powers respectively to FPGA and DDR memory after isolation circuit, while special chip TPS518200 having been used to generate what DDR was used
VTTVREF power supply and VTTDDR power supply.
Preferably, the 3rd DCDC chip output voltage is 1.5V.
Described in the present embodiment, the multichannel aerial camera low noise power supply component further includes soft starting circuit, described
Soft starting circuit is arranged between the power input interface and the DCDC chip, prevents current surge.
Preferably, the soft starting circuit uses model TPC8120.
Described in the present embodiment, the isolation circuit includes magnetic bead, capacitor, magnetic bead described in isolation circuit input terminal capital
It is connected with the isolation circuit output end；Described capacitor one end is connected with the magnetic bead, and the other end is connected with ground line.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (9)
1. a kind of multichannel aerial camera low noise power supply component, which is characterized in that including power input interface, DCDC chip,
LDO chip, isolation circuit；The power input interface is electrically connected with the DCDC chip input terminal；
The DCDC chip includes the first DCDC chip, the first DCDC chip output and the first LDO chip input terminal electricity
Link, the first LDO chip output are connected with the first isolation circuit input terminal；The output simulation of first isolation circuit point, 6 tunnels
Power vd D_PLL.
2. multichannel aerial camera low noise power supply component according to claim 1, which is characterized in that the first DCDC
Chip output also passes through two the 2nd LDO chips in parallel and connects with the second isolation circuit, second isolation circuit point, 6 tunnels
Export analog power VAA.
3. multichannel aerial camera low noise power supply component according to claim 1, which is characterized in that the first DCDC
Chip output also passes through two the 3rd LDO chips in parallel and connects with third isolation circuit, 6 tunnels of the third isolation circuit point
Export digital power VDD_IO.
4. multichannel aerial camera low noise power supply component according to claim 1, which is characterized in that the first DCDC
Chip output also passes through two the 4th LDO chips in parallel and connects with the 4th isolation circuit, 6 tunnels of the third isolation circuit point
Export digital power VDD.
5. multichannel aerial camera low noise power supply component according to claim 1, which is characterized in that the DCDC chip
It further include the 2nd DCDC chip, the 2nd DCDC chip output is directly output to FPGA power supply.
6. multichannel aerial camera low noise power supply component according to claim 1, which is characterized in that the DCDC chip
It further include the 3rd DCDC chip, the 3rd DCDC chip output is powered to FPGA and DDR memory respectively after isolation circuit,
Special chip TPS518200 has been used to generate VTTVREF power supply and VTTDDR power supply that DDR is used simultaneously.
7. multichannel aerial camera low noise power supply component according to claim 1, which is characterized in that the multichannel boat
Shooting camera low noise power supply component further includes soft starting circuit, and the soft starting circuit is arranged in the power input interface and institute
It states between DCDC chip.
8. multichannel aerial camera low noise power supply component according to claim 7, which is characterized in that the soft start electricity
Road uses model TPC8120.
9. multichannel aerial camera low noise power supply component according to any one of claims 1 to 8, which is characterized in that institute
Stating isolation circuit includes magnetic bead, capacitor, and magnetic bead described in isolation circuit input terminal capital is connected with the isolation circuit output end；
Described capacitor one end is connected with the magnetic bead, and the other end is connected with ground line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910362373.6A CN110138205A (en) | 2019-04-30 | 2019-04-30 | A kind of multichannel aerial camera low noise power supply component |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910362373.6A CN110138205A (en) | 2019-04-30 | 2019-04-30 | A kind of multichannel aerial camera low noise power supply component |
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| Publication Number | Publication Date |
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| CN110138205A true CN110138205A (en) | 2019-08-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910362373.6A Pending CN110138205A (en) | 2019-04-30 | 2019-04-30 | A kind of multichannel aerial camera low noise power supply component |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117394791A (en) * | 2023-10-17 | 2024-01-12 | 上海锐星微电子科技有限公司 | Real-time clock circuit, integrated circuit, electronic device and design method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102299620A (en) * | 2010-06-24 | 2011-12-28 | 安凯(广州)微电子技术有限公司 | Voltage conversion circuit and handheld device |
| CN107222658A (en) * | 2017-07-28 | 2017-09-29 | 合肥芯福传感器技术有限公司 | A kind of apparatus and method for reducing power consumption |
-
2019
- 2019-04-30 CN CN201910362373.6A patent/CN110138205A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102299620A (en) * | 2010-06-24 | 2011-12-28 | 安凯(广州)微电子技术有限公司 | Voltage conversion circuit and handheld device |
| CN107222658A (en) * | 2017-07-28 | 2017-09-29 | 合肥芯福传感器技术有限公司 | A kind of apparatus and method for reducing power consumption |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117394791A (en) * | 2023-10-17 | 2024-01-12 | 上海锐星微电子科技有限公司 | Real-time clock circuit, integrated circuit, electronic device and design method |
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Application publication date: 20190816 |
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