CN109801904A - Length climbs electric light electric coupler current transfer ratio middle-grade rate control method and production method - Google Patents
Length climbs electric light electric coupler current transfer ratio middle-grade rate control method and production method Download PDFInfo
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- CN109801904A CN109801904A CN201811535623.3A CN201811535623A CN109801904A CN 109801904 A CN109801904 A CN 109801904A CN 201811535623 A CN201811535623 A CN 201811535623A CN 109801904 A CN109801904 A CN 109801904A
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Abstract
The invention discloses a kind of length to climb electric light electric coupler current transfer ratio middle-grade rate control method and production method, and the control method includes: to carry out stepping according to the radiation flux of the light emitting source of photoelectrical coupler to obtain the first stepping value；Stepping, which is carried out, according to the current gain of the light-receiving device of photoelectrical coupler obtains the second stepping value；It is matched according to the first stepping value and the second stepping value to meet the pairing range pre-seted to control the current transfer ratio.Embodiment provided by the invention is matched by the current gain of radiation flux and light-receiving device to light emitting source, the middle-grade rate of the long current transfer ratio for climbing electric light electric coupler can effectively be promoted, electric light coupling ac voltage withstanding >=7000V is climbed meeting length, thickness≤2mm, while creepage distance >=8mm, the long current transfer ratio for climbing electric light electric coupler is accurately controlled, being customized of different demands can be directed to, production cost is reduced, and promotes the competitiveness of product.
Description
Technical field
The present invention relates to length to climb electric light electric coupler technical field, climbs electric light electric coupler electric current more particularly to a kind of length
Transfer ratio middle-grade rate control method and production method.
Background technique
Photoelectrical coupler is a kind of special semiconductor isolation device, its working principle is that adding in photoelectrical coupler input terminal
Electric signal makes light emitting source shine, and the intensity of light depends on the size of exciting current, when the illumination that the light emitting source issues is mapped to envelope
After the light-receiving device being fitted together, the light-receiving device is because photoelectric effect generates photoelectric current and is drawn by light-receiving device output end, thus
Realize the conversion of electric one electricity of a light.And since the photoelectrical coupler realizes the physical isolation of input/output terminal,
Has the advantages that small in size, the service life is long, contactless, anti-interference.
Several major parameters of photoelectrical coupler have: current transfer ratio CTR (Current Transfer Radio), output
When the operating voltage of pipe is specified value, output the ratio between electric current and light emitting diode forward current are current transfer ratio CTR.Climb electricity away from
From the shortest distance along the measurement of exhausted insulating surface of two adjacent conductors or a conductor and adjacent motor casing surface.
In order to promote the safety of photoelectrical coupler, the insulation distance of the photoelectrical coupler is improved, and make photoelectric coupling
Device miniaturises, and length climbs electric light electric coupler and comes into being.As shown in Figure 1, the long design feature for climbing electric light electric coupler
It misplaces for light emitting source LED chip and light-receiving device PT chip to penetrating.To current transfer ratio CTR's when due to terminal market application
Required precision is relatively high, and length climbs designing because of the relative position of luminous source chip and light-receiving device chip farther out for electric light electric coupler
The optical path distance resulted in also farther out, brings uncertainty for the stability of optocoupler CTR.Therefore it is badly in need of one kind to be both able to satisfy
The length of photoelectrical coupler climbs electricity and the raising that can accurately control CTR again length is required to climb electric light electric coupler current transfer ratio middle-grade rate
Control method and the long production method for climbing electric light electric coupler.
Summary of the invention
At least one to solve the above-mentioned problems, first aspect present invention provides a kind of length and climbs electric light electric coupler electric current biography
It is defeated than middle-grade rate control method, comprising:
Stepping, which is carried out, according to the radiation flux of the light emitting source of photoelectrical coupler obtains the first stepping value；
Stepping, which is carried out, according to the current gain of the light-receiving device of photoelectrical coupler obtains the second stepping value；
It is matched according to the first stepping value and the second stepping value to meet the pairing range pre-seted to control
State current transfer ratio.
Further, the radiation flux direct proportionality of the current transfer ratio and the light emitting source.
Further, the current gain direct proportionality of the current transfer ratio and the light-receiving device.
Further, the method also includes:
The space length of the light emitting source and light-receiving device is adjusted to control the current transfer ratio.
Further, the current transfer ratio and the inversely proportional relationship of the space length.
Further, the method also includes:
Adjustment carries out silica gel protected parameter to the light emitting source to control the current transfer ratio.
Further, the dispensing air pressure for controlling the silica gel and dispensing time are for adjusting the silica gel protected silicon used
Colloid product is to control the current transfer ratio.
Further, silica gel protected time and the mixing time of rising again is adjusted to control the current transfer ratio.
Second aspect of the present invention provides a kind of production method that length climbs electric light electric coupler, comprising:
Stepping is carried out according to the radiation flux of the light emitting source of photoelectrical coupler and obtains the first stepping value, according to photoelectrical coupler
Light-receiving device current gain carry out stepping obtain the second stepping value；
The light emitting source and light-receiving device are matched according to the pairing range pre-seted, the first stepping value and the second stepping value
It is right；
Adjust separately the bonding die position of the light emitting source and light-receiving device on the Ji Dao of bracket；
Adjustment carries out silica gel protected parameter to the light emitting source.
Further, the control carries out silica gel protected parameter to the light emitting source and further comprises:
Dispensing air pressure and the dispensing time of the silica gel are controlled to adjust the silica gel protected silicone volume used；
Adjust silica gel protected rise again time and the mixing time.
Beneficial effects of the present invention are as follows:
The present invention, which climbs electric light electric coupler for current existing length, has that current transfer ratio is unstable, formulates one
Kind improve the long method and production method for climbing electric light electric coupler current transfer ratio, and by radiation flux to light emitting source and by
The current gain of light device is matched, and the middle-grade rate of the long current transfer ratio for climbing electric light electric coupler can be effectively promoted, full
Foot length climbs electric light coupling ac voltage withstanding >=7000V, thickness≤2mm, while creepage distance >=8mm, climbs electric light electric coupler to length
Current transfer ratio accurately controlled, can be directed to being customized of different demands, reduce production cost, reduction inventory's pressure
Power, and promote the competitiveness of product.
Detailed description of the invention
Specific embodiments of the present invention will be described in further detail with reference to the accompanying drawing.
Fig. 1 shows length in the prior art and climbs electric light electric coupler；
Fig. 2 shows length described in one embodiment of the present of invention to climb electric light electric coupler current transfer ratio middle-grade rate control method
Flow chart；
Fig. 3 shows the structural schematic diagram that the source chip that shines described in one embodiment of the present of invention is fixed on Ji Dao；
Fig. 4 shows the structural schematic diagram that light-receiving device chip described in one embodiment of the present of invention is fixed on Ji Dao；
Fig. 5 shows the flow chart of production method described in one embodiment of the present of invention.
Specific embodiment
In order to illustrate more clearly of the present invention, the present invention is done further below with reference to preferred embodiments and drawings
It is bright.Similar component is indicated in attached drawing with identical appended drawing reference.It will be appreciated by those skilled in the art that institute is specific below
The content of description is illustrative and be not restrictive, and should not be limited the scope of the invention with this.
As shown in Fig. 2, An embodiment provides a kind of length to climb electric light electric coupler current transfer ratio middle-grade
Rate control method, comprising: stepping is carried out according to the radiation flux of the light emitting source of photoelectrical coupler and obtains the first stepping value；According to light
The current gain of the light-receiving device of electric coupler carries out stepping and obtains the second stepping value；According to the first stepping value and the second stepping
Value is matched to meet the pairing range pre-seted to control the current transfer ratio.
In a specific example, the radiation flux of the current transfer ratio of the photoelectrical coupler and the light emitting source at
The ratio of proportional relationship, the current transfer ratio of the more strong then photoelectrical coupler of the radiation flux of the light emitting source is bigger.Institute simultaneously
The current transfer ratio of photoelectrical coupler and the current gain direct proportionality of the light-receiving device are stated, the electric current of the light-receiving device increases
The ratio of the current transfer ratio of the more big then photoelectrical coupler of benefit is bigger.Based on this principle, first by luminous source chip according to certain
The radiation flux of range carries out stepping, such as: 0.05mW is a stepping range, is divided into A grades, B grades, C grades；Simultaneously by light-receiving device
Chip according to a certain range of current gain carry out stepping, such as: 100 be a stepping range, a grades, b grades, c grades.Such as table 1
It is shown, the luminous source chip and light-receiving device chip are matched according to the pairing range pre-seted, such as: A matches c, and B matches b,
C matches a.By being matched to the luminous source chip and light-receiving device chip, so that the current transfer ratio with photoelectrical coupler is strong
Relevant two variables, the radiation flux of light emitting source and the current gain of light-receiving device are able to fine distribution to using, thus preliminary real
The accurate control of CTR is showed, so as to carry out the customization of photoelectrical coupler for different demands, has met use to greatest extent
Family demand, while production efficiency is improved, reduce inventory, reduces production cost.
The pairing range of 1 current transfer ratio of table
In a preferred embodiment, the method also includes: adjust the space length of the light emitting source and light-receiving device
To control the current transfer ratio.Specifically, the space length of the light emitting source and light-receiving device is with the current transfer ratio at anti-
Proportionate relationship.When the space of the light emitting source and light-receiving device is specifically remoter, then the current transfer ratio is smaller.Based on this principle,
As shown in Figure 3 and Figure 4, luminous source chip and light-receiving device chip are adjusted on the Ji Dao of the long frame for climbing electric light electric coupler of preparation
Position can achieve the purpose that accurately to control current transfer ratio.By actual verification, the luminous source chip is every to described
Influence about 2% of the light-receiving device chip close to 1mm, to current transfer ratio；Meanwhile the light-receiving device chip is every to the luminous source core
For piece close to 1mm, the influence to current transfer ratio is about 5%.Therefore by the luminous source chip and light-receiving device chip in space
The movement of position realizes the further accurate control to current transfer ratio.
In another preferred embodiment, the method also includes: adjustment the light emitting source is carried out it is silica gel protected
Parameter is to control the current transfer ratio.It is climbed in the manufacturing process of electric light electric coupler in length, the luminous source chip is fixed on
It needs to carry out a silica gel treatment after Ji Dao, as shown in Figure 1, protected to fragile luminous source chip, it is another
Aspect is the light type that the silica gel can change light emitting source, to keep the light of light-receiving device more uniform.Therefore the pattern of silica gel
It is a variable for influencing current transfer ratio.It, can be by adjusting the silica gel protected silicone volume used based on this principle
The accurate control to the current transfer ratio, such as the parameter of control point silica gel device are realized, such as air pressure 200-600pi, time
0.1-1s；Silica gel protected the time can also be risen again and mixing time realizes essence to the current transfer ratio by adjusting described
Really control, for example, by accurately controlling rising again the time for silica gel, such as 1-8 hours, mixing time is 1-5 hours；To realize
The consistency of silica gel pattern and dosage, and then the consistency of optical path is controlled, and the good of optical path repeats to have advanced optimized electricity
Flow the consistency of transfer ratio.
Corresponding with the raising method of current transfer ratio provided by the above embodiment, one embodiment of the present of invention also provides
A kind of production method that length climbs electric light electric coupler, due to production method provided by the embodiments of the present application and above-mentioned several embodiments
The method of the raising current transfer ratio of offer is corresponding, therefore is also applied for production provided in this embodiment in aforementioned embodiments
Method is not described in detail in the present embodiment.
As shown in figure 5, one embodiment of the present of invention also provides a kind of production method that length climbs electric light electric coupler, packet
It includes:
Firstly, carrying out stepping according to the radiation flux of the light emitting source of photoelectrical coupler obtains the first stepping value, according to photoelectricity
The current gain of the light-receiving device of coupler carries out stepping and obtains the second stepping value.
Secondly, according to the pairing range pre-seted, the first stepping value and the second stepping value by the light emitting source and light-receiving device
It is matched.
Again, the bonding die position of the light emitting source and light-receiving device on the Ji Dao of bracket is adjusted separately.
Finally, adjustment carries out silica gel protected parameter to the light emitting source, the dispensing gas for controlling the silica gel is specifically included
Pressure and dispensing time are to adjust the silica gel protected silicone volume used；Adjust silica gel protected rise again time and the stirring
Time.
The present invention, which climbs electric light electric coupler for current existing length, has that current transfer ratio is unstable, formulates one
Kind improve the long method and production method for climbing electric light electric coupler current transfer ratio, and by radiation flux to light emitting source and by
The current gain of light device is matched, and the middle-grade rate of the long current transfer ratio for climbing electric light electric coupler can be effectively promoted, full
Foot length climbs electric light coupling ac voltage withstanding >=7000V, thickness≤2mm, while creepage distance >=8mm, climbs electric light electric coupler to length
Current transfer ratio accurately controlled, can be directed to being customized of different demands, reduce production cost, reduction inventory's pressure
Power, and promote the competitiveness of product.
Obviously, the above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be pair
The restriction of embodiments of the present invention may be used also on the basis of the above description for those of ordinary skill in the art
To make other variations or changes in different ways, all embodiments can not be exhaustive here, it is all to belong to this hair
The obvious changes or variations that bright technical solution is extended out are still in the scope of protection of the present invention.
Claims (10)
1. a kind of length climbs electric light electric coupler current transfer ratio middle-grade rate control method characterized by comprising
Stepping, which is carried out, according to the radiation flux of the light emitting source of photoelectrical coupler obtains the first stepping value；
Stepping, which is carried out, according to the current gain of the light-receiving device of photoelectrical coupler obtains the second stepping value；
It is matched according to the first stepping value and the second stepping value to meet the pairing range pre-seted to control the electricity
Flow transfer ratio.
2. the method according to claim 1, wherein
The radiation flux direct proportionality of the current transfer ratio and the light emitting source.
3. the method according to claim 1, wherein
The current gain direct proportionality of the current transfer ratio and the light-receiving device.
4. the method according to claim 1, wherein the method also includes:
The space length of the light emitting source and light-receiving device is adjusted to control the current transfer ratio.
5. according to the method described in claim 4, it is characterized in that,
The current transfer ratio and the inversely proportional relationship of the space length.
6. the method according to claim 1, wherein the method also includes:
Adjustment carries out silica gel protected parameter to the light emitting source to control the current transfer ratio.
7. according to the method described in claim 6, it is characterized in that,
The dispensing air pressure for controlling the silica gel and dispensing time are for adjusting the silica gel protected silicone volume used to control
The current transfer ratio.
8. according to the method described in claim 6, it is characterized in that,
Silica gel protected time and the mixing time of rising again is adjusted to control the current transfer ratio.
9. the production method that a kind of length climbs electric light electric coupler characterized by comprising
Carry out stepping according to the radiation flux of the light emitting source of photoelectrical coupler and obtain the first stepping value, according to photoelectrical coupler by
The current gain of light device carries out stepping and obtains the second stepping value；
The light emitting source and light-receiving device are matched according to the pairing range pre-seted, the first stepping value and the second stepping value；
Adjust separately the bonding die position of the light emitting source and light-receiving device on the Ji Dao of bracket；
Adjustment carries out silica gel protected parameter to the light emitting source.
10. manufacturing method according to claim 9, which is characterized in that the control carries out silica gel guarantor to the light emitting source
The parameter of shield further comprises:
Dispensing air pressure and the dispensing time of the silica gel are controlled to adjust the silica gel protected silicone volume used；
Adjust silica gel protected rise again time and the mixing time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811535623.3A CN109801904A (en) | 2018-12-14 | 2018-12-14 | Length climbs electric light electric coupler current transfer ratio middle-grade rate control method and production method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811535623.3A CN109801904A (en) | 2018-12-14 | 2018-12-14 | Length climbs electric light electric coupler current transfer ratio middle-grade rate control method and production method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109801904A true CN109801904A (en) | 2019-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811535623.3A Pending CN109801904A (en) | 2018-12-14 | 2018-12-14 | Length climbs electric light electric coupler current transfer ratio middle-grade rate control method and production method |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1154790A (en) * | 1997-08-05 | 1999-02-26 | Sharp Corp | Optically coupled device and manufacture thereof |
| US20030015644A1 (en) * | 2001-07-18 | 2003-01-23 | Hiroaki Morikawa | Fabrication method of optically coupled device |
-
2018
- 2018-12-14 CN CN201811535623.3A patent/CN109801904A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1154790A (en) * | 1997-08-05 | 1999-02-26 | Sharp Corp | Optically coupled device and manufacture thereof |
| US20030015644A1 (en) * | 2001-07-18 | 2003-01-23 | Hiroaki Morikawa | Fabrication method of optically coupled device |
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Effective date of registration: 20210507 Address after: No.180-6, Linghu Avenue, Taihu International Science and Technology Park, Xinwu District, Wuxi City, Jiangsu Province, 214135 Applicant after: China Resources micro integrated circuit (Wuxi) Co., Ltd Address before: Part 8a, Tianxiang building, Tian'an Digital City, chegongmiao, Shennan West Road, Futian District, Shenzhen City, Guangdong Province Applicant before: CHINA RESOURCES SEMICONDUCTOR (SHENZHEN) Co.,Ltd. |
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Application publication date: 20190524 |