CN205490146U - Output circuit of linear direct current steady voltage of MOSFET - Google Patents
Output circuit of linear direct current steady voltage of MOSFET Download PDFInfo
- Publication number
- CN205490146U CN205490146U CN201620210870.6U CN201620210870U CN205490146U CN 205490146 U CN205490146 U CN 205490146U CN 201620210870 U CN201620210870 U CN 201620210870U CN 205490146 U CN205490146 U CN 205490146U
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- circuit
- mosfet
- electric capacity
- mosfet pipe
- voltage
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Abstract
The utility model discloses an output circuit of linear direct current steady voltage of MOSFET, including first electric capacity, second electric capacity, resistance, stabilivolt and MOSFET pipe, a capacitance connection between the input and output of circuit, the 2nd capacitance connection between the output of first electric capacity and circuit, resistance and stabilivolt series connection after be connected with a capacitance parallel connection again, MOSFET pipe including grid, source electrode and drain electrode, the output of grid and circuit of MOSFET pipe be connected, the source electrode of MOSFET pipe be connected with resistance and stabilivolt respectively, the input of drain electrode and circuit of MOSFET pipe be connected. In this way, the utility model discloses an output circuit of linear direct current steady voltage of MOSFET, it has the operating voltage range width, reduces advantages such as shared area of PCB design time and the better lectotype of device.
Description
Technical field
This utility model belongs to the technical field of circuit, is specifically related to the output circuit of a kind of MOSFET linear DC voltage stabilizing.
Background technology
At present, the traditional audion electronic filter circuit used in circuit and LM7812 voltage stabilizing chip, input voltage ratio is relatively low, when input voltage is higher than 30V, and this circuit cannot re-use.
Utility model content
This utility model is mainly solving the technical problems that provide the output circuit of a kind of MOSFET linear DC voltage stabilizing, under keeping original function, by each components and parts, achieve Width funtion input, solve when input voltage is higher than 30V, the problem that this circuit cannot re-use, it has operating voltage range width, reduces the advantage such as area shared during PCB design and the more preferable type selecting of device.
For solving above-mentioned technical problem, the technical scheme that this utility model uses is: provide the output circuit of a kind of MOSFET linear DC voltage stabilizing, including the first electric capacity, second electric capacity, resistance, stabilivolt and MOSFET pipe, the first described electric capacity is connected between the input of circuit and outfan, the second described electric capacity is connected between the first electric capacity and the outfan of circuit, described resistance is connected in parallel with the first electric capacity after being connected in series with stabilivolt again, described MOSFET pipe includes grid, source electrode and drain electrode, the described grid of MOSFET pipe is connected with the outfan of circuit, the source electrode of described MOSFET pipe is connected with resistance and stabilivolt respectively, the described drain electrode of MOSFET pipe is connected with the input of circuit.
In one preferred embodiment of this utility model, the first described electric capacity and the second electric capacity all use electrochemical capacitor.
In one preferred embodiment of this utility model, described MOSFET pipe uses N-type MOSFET pipe, and its model is IRF640, and the grid voltage of described MOSFET pipe is consistently higher than the voltage of source electrode.
In one preferred embodiment of this utility model, a width of 15-100VDC of voltage range of the input of described circuit.
In one preferred embodiment of this utility model, the voltage of the input of described circuit is 48VDC.
In one preferred embodiment of this utility model, the voltage of the outfan of described circuit is 12VDC.
The beneficial effects of the utility model are: the output circuit of MOSFET linear DC voltage stabilizing of the present utility model, under keeping original function, by each components and parts, achieve Width funtion input, solve when input voltage is higher than 30V, the problem that this circuit cannot re-use, it has operating voltage range width, reduces the advantage such as area shared during PCB design and the more preferable type selecting of device.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme in this utility model embodiment, in describing embodiment below, the required accompanying drawing used is briefly described, apparently, accompanying drawing in describing below is only embodiments more of the present utility model, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings, wherein:
Fig. 1 is the circuit diagram of a preferred embodiment of the output circuit of this utility model MOSFET linear DC voltage stabilizing.
Detailed description of the invention
Technical scheme in this utility model embodiment will be clearly and completely described below, it is clear that described embodiment is only a part of embodiment of the present utility model rather than whole embodiments.Based on the embodiment in this utility model, all other embodiments that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of this utility model protection.
As it is shown in figure 1, this utility model embodiment includes:
nullA kind of output circuit of MOSFET linear DC voltage stabilizing，Including the first electric capacity C1、Second electric capacity C2、Resistance R1、Stabilivolt ZD1 and MOSFET pipe Q1，The first described electric capacity C1 is connected between the input of circuit and outfan，The second described electric capacity C2 is connected between the first electric capacity C1 and the outfan of circuit，Described resistance R1 is connected in parallel with the first electric capacity C1 after being connected in series with stabilivolt ZD1 again，Described MOSFET pipe Q1 includes grid G、Source S and drain D，The grid G of described MOSFET pipe Q1 is connected with the outfan of circuit，The source S of described MOSFET pipe Q1 is connected with resistance R1 and stabilivolt ZD1 respectively，The drain D of described MOSFET pipe Q1 is connected with the input of circuit.
In above-mentioned, a width of 15-100VDC of voltage range of the input of described circuit.In the present embodiment, the voltage of the input of described circuit is 48VDC；The voltage of the outfan of described circuit is 12VDC.
Wherein, the first described electric capacity C1 and the second electric capacity C2 all uses electrochemical capacitor；Described MOSFET pipe Q1 uses N-type MOSFET pipe, and its model is IRF640, and the grid voltage of described MOSFET pipe Q1 is consistently higher than the voltage of source electrode.
Specifically, resistance R1 be 6.8K resistance, stabilivolt ZD1 be 15V stabilivolt, MOSFET pipe Q1 be IRF640, the first electric capacity C1 be 22Uf/100V electrochemical capacitor, the first electric capacity C2 be 47Uf/25V electrochemical capacitor.
Circuit input input be 48V unidirectional current through resistance R1, stabilivolt ZD1 voltage stabilizing at+15V, the on state characteristic of MOSFET pipe Q1 is just to open energy conducting when Vgs voltage reaches more than+3V, because grid (G) voltage of N-type MOSFET pipe is above source electrode (S) all the time, so source S normal table output+12VDC, MOSFET pipe Q1 is operated in linear voltage stabilization district, MOSFET pipe Q1 need to be allowed to have enough radiating conditions if now needing to increase output electric current.
The output circuit of MOSFET linear DC voltage stabilizing of the present utility model is compared with traditional audion electronic filter circuit and LM7812 voltage stabilizing chip technology, and its advantage is:
1. wide input voltage range: 15-100VDC, traditional audion electronic filter circuit and LM7812 voltage stabilizing chip voltage are usually no more than 30VDC；
The most traditional audion electronic filter circuit is that Current amplifier type carries out voltage stabilizing by triode operation amplification region, base stage needs bigger driving electric current, so the resistance of resistance R1 can not take the biggest, power can not be the least, on corresponding resistor R1, power just increases, the space just taking PCB during design circuit board is the biggest, as used MOSFET linear DC voltage stabilizing scheme of the present utility model to be, voltage driven type carries out voltage stabilizing by MOSFET pipe Q1 work amplification region, should be fed only with the just energy voltage stabilizing of corresponding voltage, so the resistance of resistance R1 can take greatly, power is the most desirable little, during design circuit board, corresponding volume also reduces；
3. the MOSFET pipe Q1 device of high voltage small size is than audion finer selection.
In sum, the output circuit of MOSFET linear DC voltage stabilizing of the present utility model, under keeping original function, by each components and parts, achieve Width funtion input, solve when input voltage is higher than 30V, and the problem that this circuit cannot re-use, it has operating voltage range width, reduces the advantage such as area shared during PCB design and the more preferable type selecting of device.
The foregoing is only embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every equivalent structure utilizing this utility model description to be made or equivalence flow process conversion; or directly or indirectly it is used in other relevant technical field, the most in like manner it is included in scope of patent protection of the present utility model.
Claims (6)
1. the output circuit of a MOSFET linear DC voltage stabilizing, it is characterized in that, including the first electric capacity, second electric capacity, resistance, stabilivolt and MOSFET pipe, the first described electric capacity is connected between the input of circuit and outfan, the second described electric capacity is connected between the first electric capacity and the outfan of circuit, described resistance is connected in parallel with the first electric capacity after being connected in series with stabilivolt again, described MOSFET pipe includes grid, source electrode and drain electrode, the described grid of MOSFET pipe is connected with the outfan of circuit, the source electrode of described MOSFET pipe is connected with resistance and stabilivolt respectively, the described drain electrode of MOSFET pipe is connected with the input of circuit.
The output circuit of MOSFET linear DC voltage stabilizing the most according to claim 1, it is characterised in that the first described electric capacity and the second electric capacity all use electrochemical capacitor.
The output circuit of MOSFET linear DC voltage stabilizing the most according to claim 1, it is characterised in that described MOSFET pipe uses N-type MOSFET pipe, and its model is IRF640, and the grid voltage of described MOSFET pipe is consistently higher than the voltage of source electrode.
The output circuit of MOSFET linear DC voltage stabilizing the most according to claim 1, it is characterised in that a width of 15-100VDC of voltage range of the input of described circuit.
The output circuit of MOSFET linear DC voltage stabilizing the most according to claim 4, it is characterised in that the voltage of the input of described circuit is 48VDC.
The output circuit of MOSFET linear DC voltage stabilizing the most according to claim 5, it is characterised in that the voltage of the outfan of described circuit is 12VDC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620210870.6U CN205490146U (en) | 2016-03-21 | 2016-03-21 | Output circuit of linear direct current steady voltage of MOSFET |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620210870.6U CN205490146U (en) | 2016-03-21 | 2016-03-21 | Output circuit of linear direct current steady voltage of MOSFET |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205490146U true CN205490146U (en) | 2016-08-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201620210870.6U Expired - Fee Related CN205490146U (en) | 2016-03-21 | 2016-03-21 | Output circuit of linear direct current steady voltage of MOSFET |
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| CN (1) | CN205490146U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105634278A (en) * | 2016-03-21 | 2016-06-01 | 江苏峰谷源储能技术研究院有限公司 | MOSFET linear direct-current voltage-stabilizing output circuit |
-
2016
- 2016-03-21 CN CN201620210870.6U patent/CN205490146U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105634278A (en) * | 2016-03-21 | 2016-06-01 | 江苏峰谷源储能技术研究院有限公司 | MOSFET linear direct-current voltage-stabilizing output circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201210 Address after: Room 308-32, 3 / F, No.21, Lane 88, Wuwei Road, Putuo District, Shanghai Patentee after: Shanghai Lingshun Energy Technology Co.,Ltd. Address before: 212000 Building C25 of Dingmao Science Park, Zhenjiang City, Jiangsu Province Patentee before: JIANGSU FGY ENERGY STORAGE RESEARCH INSTITUTE Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160817 |