CN102760564A - Drive transformer for MOS (metal oxide semiconductor) transistor of power converter - Google Patents
Drive transformer for MOS (metal oxide semiconductor) transistor of power converter Download PDFInfo
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- CN102760564A CN102760564A CN2012102383362A CN201210238336A CN102760564A CN 102760564 A CN102760564 A CN 102760564A CN 2012102383362 A CN2012102383362 A CN 2012102383362A CN 201210238336 A CN201210238336 A CN 201210238336A CN 102760564 A CN102760564 A CN 102760564A
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Abstract
The invention relates to a drive transformer for the MOS (metal oxide semiconductor) transistor of a power converter, comprising a magnetic core, wherein grooves used for inserting a primary-side printed board and a drive printed board are formed on the magnetic core, through holes used for penetrating through lead needles are formed on the primary-side printed board and the drive printed board, and both of the primary-side printed board and the drive printed board use PCBs (printed circuit board). According to the invention, the primary-side printed board and the drive printed board formed by the wiring of the PCBs are used as the coils of the drive transformer, the drive printed board is coupled with the primary-side printed board via the magnetic core, and safe isolation is provided while a drive signal is transferred. Because of adopting the printed boards, the drive transformer disclosed by the invention is low in copper loss, low in leakage inductance and low in distributed capacitance; additionally, the drive transformer disclosed by the invention further is simple in structure, low in cost, easy in production, good in consistency, etc.
Description
Technical field
The present invention relates to a kind of transformer, especially a kind of driving transformer of power inverter metal-oxide-semiconductor.
Background technology
Powerful AC-DC converter need adopt the Mos pipe Driving technique of isolation, when high-end and low side Mos pipe drive current are provided, guarantees the isolation of control circuit and electrical network.Traditional isolating transformer adopts magnet ring or common magnetic core, utilizes enamelled wire coiling line bag, this mode complex manufacturing technology, and parasitic parameter is bigger, and volume is bigger, is not suitable for producing in enormous quantities.
Summary of the invention
The object of the present invention is to provide that a kind of manufacture craft is simple, distributed constant is little, volume is little, the driving transformer of the power inverter metal-oxide-semiconductor of high conformity.
For realizing above-mentioned purpose; The present invention has adopted following technical scheme: a kind of driving transformer of power inverter metal-oxide-semiconductor; Comprise magnetic core; Offer on the magnetic core and can supply the printed board of former limit, drive the groove that printed board is inserted, all offer in the printed board of former limit, the driving printed board and can supply to draw the through hole that pin passes, the printed board of former limit is all adopted the PCB circuit board with the driving printed board.
Can know by technique scheme; The present invention adopts former limit printed board that PCB circuit board cabling forms, drives the line bag of printed board as driving transformer; Drive printed board and intercouple, safe isolation is provided when transmitting drive signal through magnetic core and the printed board of former limit.Owing to adopt printed board, make the present invention have low copper loss, low leakage inductance and low distributed capacitance, in addition, that the present invention also has is simple in structure, cost is low, is easy to produce advantages such as high conformity.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 is the structural representation of first and second magnetic core among the present invention;
Fig. 4 is the vertical view of Fig. 3;
Fig. 5 is the structural representation that the first driving printed board, former limit printed board, second drive printed board among the present invention;
Fig. 6 is the vertical view of Fig. 5.
Embodiment
A kind of driving transformer of power inverter metal-oxide-semiconductor; Comprise magnetic core; Offer on the magnetic core and can supply former limit printed board 30, drive the groove that printed board is inserted; All offer in former limit printed board 30, the driving printed board and can supply to draw the through hole 80 that pin 60 passes, former limit printed board 30 is all adopted the PCB circuit board with driving printed board, and is as shown in Figure 1.Advantages such as it is low to adopt the PCB circuit board to make driving transformer have leakage inductance as the line bag, and operating frequency is wide, and working temperature is wide.
Like Fig. 1,2,3, shown in 4; Described magnetic core is made up of first and second identical magnetic core 10,20 of shape; Described first and second magnetic core 10,20 all adopts the plane magnetic core; Positioned opposite and the cross sectional shape of the two all are E shape about the two, offer on first and second groove 11,12, the second magnetic cores 20 that offer on first magnetic core 10 and can supply former limit printed board 30, drive the printed board insertion and can supply former limit printed board 30, drive third and fourth groove 21,22 that printed board is inserted; First and third groove 11,21 is offered relatively; The second, four grooves 12,22 are offered relatively, and first protruding 13 at first and second groove 11, between 12, and second protruding 23 at third and fourth groove 21, between 22.Advantages such as it is little to adopt the plane magnetic core to make driving transformer have a volume, and section is low are fit to the application of high-density power converter.
Like Fig. 1,2,5, shown in 6; Described driving printed board drives printed board 40,50 by first and second and forms; It is identical with the shape of former limit printed board 30 that first and second drives printed board 40,50; The first driving printed board 40, former limit printed board 30, second drive printed board 50 and all insert in the groove of offering on first and second magnetic core 10,20, and former limit printed board 30 is in first and second driving printed board 40, between 50.The first driving printed board 40 and second drives printed board 50 and is coupled mutually through first and second magnetic core 10,20 and former limit printed board 30, transmits drive signal and isolation each other.The shape of described former limit printed board 30 is worker's shape, and four edges of former limit printed board 30 are offered and can be supplied to draw the through hole 80 that pin 60 passes, and strip hole 31 is offered at the center of former limit printed board 30, the aperture of strip hole 31 and first and second consistent size of protruding 12,23.Described first and second drives the equal Continuous pressing device for stereo-pattern 70 in both sides up and down of printed board 40,50 and former limit printed board 30.In order to reduce the cost of PCB circuit board, via holes all in the printed board all use through hole, and printing board surface has cabling, and equal Continuous pressing device for stereo-pattern 70 is in order to increase the insulation between the printed board in the printed board both sides.This structure that adopts printed board to insert magnetic core makes the driving transformer manufacture craft simple, and high conformity has also reduced cost for producing in enormous quantities.
Claims (6)
1. the driving transformer of a power inverter metal-oxide-semiconductor; It is characterized in that: comprise magnetic core; Offer on the magnetic core and can supply former limit printed board (30), drive the groove that printed board is inserted; All offer in former limit printed board (30), the driving printed board and can supply to draw the through hole (80) that pin (60) passes, former limit printed board (30) is all adopted the PCB circuit board with the driving printed board.
2. the driving transformer of power inverter metal-oxide-semiconductor according to claim 1; It is characterized in that: described magnetic core is made up of first and second identical magnetic core of shape (10,20); Positioned opposite and the cross sectional shape of the two all are E shape about the two; Offer on first magnetic core (10) and can supply former limit printed board (30), drive first and second groove (11,12) that printed board is inserted; Offer on second magnetic core (20) and can supply former limit printed board (30), drive third and fourth groove (21,22) that printed board is inserted, first and third groove (11,21) is offered relatively, and second, four grooves (12,22) are offered relatively; First convexity (13) is positioned between first and second groove (11,12), and second convexity (23) is positioned between third and fourth groove (21,22).
3. the driving transformer of power inverter metal-oxide-semiconductor according to claim 1; It is characterized in that: described driving printed board drives printed board (40,50) by first and second and forms; It is identical with the shape of former limit printed board (30) that first and second drives printed board (40,50); The first driving printed board (40), former limit printed board (30), second drive printed board (50) and all insert in the groove of offering on first and second magnetic core (10,20), and former limit printed board (30) is positioned at first and second and drives between printed board (40,50).
4. the driving transformer of power inverter metal-oxide-semiconductor according to claim 2 is characterized in that: described first and second magnetic core (10,20) all adopts the plane magnetic core.
5. the driving transformer of power inverter metal-oxide-semiconductor according to claim 2; It is characterized in that: the shape of described former limit printed board (30) is worker's shape; Four edges of former limit printed board (30) are offered and can be supplied to draw the through hole (80) that pin (60) passes; Strip hole (31) is offered at the center of former limit printed board (30), the consistent size of the aperture of strip hole (31) and first and second convexity (12,23).
6. the driving transformer of power inverter metal-oxide-semiconductor according to claim 3 is characterized in that: described first and second drives the equal Continuous pressing device for stereo-pattern in both sides up and down (70) of printed board (40,50) and former limit printed board (30).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102383362A CN102760564A (en) | 2012-07-11 | 2012-07-11 | Drive transformer for MOS (metal oxide semiconductor) transistor of power converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102383362A CN102760564A (en) | 2012-07-11 | 2012-07-11 | Drive transformer for MOS (metal oxide semiconductor) transistor of power converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102760564A true CN102760564A (en) | 2012-10-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102383362A Pending CN102760564A (en) | 2012-07-11 | 2012-07-11 | Drive transformer for MOS (metal oxide semiconductor) transistor of power converter |
Country Status (1)
| Country | Link |
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| CN (1) | CN102760564A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109100971A (en) * | 2018-08-20 | 2018-12-28 | 合肥华耀电子工业有限公司 | A kind of switching on and shutting down sequential control circuit with interlock function |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020149461A1 (en) * | 2000-02-01 | 2002-10-17 | Compaq Computer Corporation | Apparatus and method for PCB winding planar magnetic devices |
| CN201084533Y (en) * | 2007-06-06 | 2008-07-09 | 艾默生网络能源系统有限公司 | High-power planar transformer |
| CN201478089U (en) * | 2009-08-10 | 2010-05-19 | 深圳市创世富尔电子有限公司 | High-power planar transformer |
| CN202678076U (en) * | 2012-07-11 | 2013-01-16 | 合肥华耀电子工业有限公司 | Driver transformer for MOS (metal oxide semiconductor) transistors of power converters |
-
2012
- 2012-07-11 CN CN2012102383362A patent/CN102760564A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020149461A1 (en) * | 2000-02-01 | 2002-10-17 | Compaq Computer Corporation | Apparatus and method for PCB winding planar magnetic devices |
| CN201084533Y (en) * | 2007-06-06 | 2008-07-09 | 艾默生网络能源系统有限公司 | High-power planar transformer |
| CN201478089U (en) * | 2009-08-10 | 2010-05-19 | 深圳市创世富尔电子有限公司 | High-power planar transformer |
| CN202678076U (en) * | 2012-07-11 | 2013-01-16 | 合肥华耀电子工业有限公司 | Driver transformer for MOS (metal oxide semiconductor) transistors of power converters |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109100971A (en) * | 2018-08-20 | 2018-12-28 | 合肥华耀电子工业有限公司 | A kind of switching on and shutting down sequential control circuit with interlock function |
| CN109100971B (en) * | 2018-08-20 | 2024-02-09 | 合肥华耀电子工业有限公司 | On-off time sequence control circuit with interlocking function |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| C05 | Deemed withdrawal (patent law before 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121031 |