CN204216786U - Many pins low clearance chip type power module - Google Patents
Many pins low clearance chip type power module Download PDFInfo
- Publication number
- CN204216786U CN204216786U CN201420743280.0U CN201420743280U CN204216786U CN 204216786 U CN204216786 U CN 204216786U CN 201420743280 U CN201420743280 U CN 201420743280U CN 204216786 U CN204216786 U CN 204216786U
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- power module
- ceramic substrate
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- chip type
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Abstract
The utility model discloses a kind of many pins low clearance chip type power module, comprise transformer, control power circuit board and shell.Power module adopts single-ended reverse exciting circuit topology, control circuit and power circuit Integrated design are on ceramic substrate, it is integrally welded that ceramic substrate and metal shell base plate pass through tin cream, one-body molded along being connect by parallel seam welding on cover plate of outer casing and metal shell, form a confined space, and at this confined space inert gas injecting, play antioxidation; Power module is 18 pins, is mounted in metal shell by the mode of glass insulation grain, and pin the inner is welded on the pin pad of ceramic substrate.The beneficial effects of the utility model are: power module internal power loop, shell, control circuit, transformer and inductor integrated formation Integrated design, its structure is simple, volume is little, reliability is high, cost is low, applied range.
Description
Technical field
The utility model relates to a kind of power module, specifically, relates to a kind of many pins low clearance chip type power module.
Background technology
At present, power module ubiquity then poor reliability as little in fruit volume, if want reliability height, volume is large, but very important occasion needs volume little and the high power module of reliability at home.
Utility model content
One many pins low clearance chip type power module that the utility model designs to solve the problems of the technologies described above just.
The utility model solves the technical scheme that its technical problem adopts:
A kind of many pins low clearance chip type power module, comprises transformer, controls power circuit board and shell.Power module adopts single-ended reverse exciting circuit topology, control circuit and power circuit Integrated design are on ceramic substrate, it is integrally welded that ceramic substrate and metal shell base plate pass through tin cream, one-body molded along being connect by parallel seam welding on cover plate of outer casing and metal shell, form a confined space, and at this confined space inert gas injecting, play antioxidation; Power module is 18 pins, is mounted in metal shell by the mode of glass insulation grain, and pin the inner is welded on the pin pad of ceramic substrate.
Described many pins low clearance chip type power module, its input voltage covers DC9V-DC80V, and single channel output voltage covers DC3.3V-DC36V, and peak power output is 15W, and maximum output current is 3A, and maximum power density is 23.3W/in
3, shell sizes is 47.9*22.4*10mm.
The utility model many pins low clearance chip type power module has features:
1, isolating withstand voltage between input and output is DC500V;
2, internal power circuit, shell, cover plate of outer casing, control circuit, transformer integrated design;
3, natural heat dissipation mode is adopted, without the need to additional cooling measure.
The beneficial effect of the utility model many pins low clearance chip type power module is: power module internal power loop, shell, control circuit, transformer and inductor integrated formation Integrated design, its structure is simple, volume is little, reliability is high, cost is low, applied range.
Accompanying drawing explanation
Fig. 1 is the utility model many pins low clearance chip type power module fundamental diagram.
Fig. 2 is the utility model many pins low clearance chip type power module circuitry figure.
Fig. 3 is the utility model many pins low clearance chip type power module ceramic substrate top view structure chart.
Fig. 4 is the utility model many pins low clearance chip type power module sectional structure chart.
Fig. 5 is that pin Welding Structure figure is drawn in the utility model many pins low clearance chip type power module inside.
Fig. 6 is the utility model many pins low clearance chip type power module outline dimensional drawing.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further illustrated.
As depicted in figs. 1 and 2, a kind of novel many pins low clearance chip type power module of the utility model, when main switch mosfet pipe conducting, supply voltage is added on transformer primary side winding, now vice-side winding induces voltage, its polarity " * " end is " just ", and diode D1 is ended, and load current is provided by filter capacitor electric capacity C0.Now transformer secondary winding open circuit, only have the winding work of former limit, be equivalent to an inductance, therefore primary current starts linear rising.In the process, magnetic core of transformer is magnetized, and its magnetic flux also linearly increases.When switch mosfet pipe turns off, transformer primary side winding is opened a way, and the induced potential of vice-side winding is reverse, " * " end is " bearing ", and make diode D1 conducting, the energy be stored in transformer magnetic field is discharged by D1, charge on the one hand electric capacity C0, power to the load on the other hand.Now transformer only has vice-side winding work, is equivalent to an inductance.Secondary winding current starts linear decline.In the process, transformer is by degaussing, and its magnetic flux also linearly reduces, and adopts single-ended reverse exciting circuit, and structure is simple, and functional reliability is high.
As shown in Fig. 3, Fig. 4, Fig. 5 and Fig. 6, the utility model power module internal control circuit and power circuit Integrated design are on ceramic substrate 4, ceramic substrate 4 welds 5 with metal shell 1 by tin cream and is integrally formed integrated design, it is high that ceramic substrate 4 has insulation, the feature that conductive coefficient is high, the heat of power module loss almost completely on conductive metal shell 1, can arrive desirable thermal equilibrium state.Power module is 18 pins 8, be mounted in housing by the mode of glass insulation grain 7, pin 8 the inner is welded on the pin pad 6 of ceramic substrate, inert gas is poured in power module inside 3, arrive oxidation resistant effect, cover plate of outer casing 2 and metal shell 1 connect one-body molded by parallel seam welding, prevent the inert gas of power module inside 3 from leaking, have good air-tightness.Of the present utility modelly achieve internal power circuit, metal shell 1, cover plate of outer casing 2, control circuit, transformer and inductor integrated Integrated design.
By adopting above-mentioned design, the utility model power module achieves input voltage and covers DC9V-DC80V, output voltage covers DC3.3V-DC36V(single channel and exports), volume is: 47.9*22.4*10(unit: mm), peak power output is 15W, maximum output current is 3A, and maximum power density is 23.3W/in
3.
The utility model is not limited to above-mentioned preferred forms, anyone other any or akin products identical with the utility model drawn under enlightenment of the present utility model, all drops within protection range of the present utility model.
Claims (2)
1. the low clearance of pin more than a chip type power module, comprises transformer, controls power circuit board and shell; It is characterized in that: power module adopts single-ended reverse exciting circuit topology, control circuit and power circuit Integrated design are on ceramic substrate, ceramic substrate (4) and metal shell (1) base plate by tin cream weld (5) integral, one-body molded along being connect by parallel seam welding on cover plate of outer casing (2) and metal shell, form a confined space (3), and at this confined space inert gas injecting, play antioxidation; Power module is 18 pins (8), is mounted in metal shell (1) by the mode of glass insulation grain (7), and pin the inner is welded on the pin pad (6) of ceramic substrate.
2. many pins low clearance chip type power module according to claim 1, it is characterized in that: input voltage covers DC9V-DC80V, single channel output voltage covers DC3.3V-DC36V, and peak power output is 15W, maximum output current is 3A, and maximum power density is 23.3W/in
3, shell sizes is 47.9*22.4*10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420743280.0U CN204216786U (en) | 2014-12-03 | 2014-12-03 | Many pins low clearance chip type power module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420743280.0U CN204216786U (en) | 2014-12-03 | 2014-12-03 | Many pins low clearance chip type power module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204216786U true CN204216786U (en) | 2015-03-18 |
Family
ID=52985419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420743280.0U Active CN204216786U (en) | 2014-12-03 | 2014-12-03 | Many pins low clearance chip type power module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204216786U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106253688A (en) * | 2016-09-27 | 2016-12-21 | 航天长峰朝阳电源有限公司 | A kind of multi-pipe pin two-way follows regulated power supply module |
| TWI584315B (en) * | 2015-04-10 | 2017-05-21 | 台達電子企業管理（上海）有限公司 | Power module and energy converting device using the same |
-
2014
- 2014-12-03 CN CN201420743280.0U patent/CN204216786U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI584315B (en) * | 2015-04-10 | 2017-05-21 | 台達電子企業管理（上海）有限公司 | Power module and energy converting device using the same |
| CN106253688A (en) * | 2016-09-27 | 2016-12-21 | 航天长峰朝阳电源有限公司 | A kind of multi-pipe pin two-way follows regulated power supply module |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |