EP2932597A1 - Schaltnetzteil mit einer kaskodenschaltung - Google Patents
Schaltnetzteil mit einer kaskodenschaltungInfo
- Publication number
- EP2932597A1 EP2932597A1 EP13792904.8A EP13792904A EP2932597A1 EP 2932597 A1 EP2932597 A1 EP 2932597A1 EP 13792904 A EP13792904 A EP 13792904A EP 2932597 A1 EP2932597 A1 EP 2932597A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- power supply
- bipolar transistor
- switching power
- switching
- transformer
- 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.)
- Withdrawn
Links
- 230000005669 field effect Effects 0.000 claims abstract description 30
- 238000004804 winding Methods 0.000 claims abstract description 28
- 230000000903 blocking effect Effects 0.000 description 8
- 229910000859 α-Fe Inorganic materials 0.000 description 5
- 239000003990 capacitor Substances 0.000 description 4
- 238000009499 grossing Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 239000002800 charge carrier Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/04—Modifications for accelerating switching
- H03K17/042—Modifications for accelerating switching by feedback from the output circuit to the control circuit
- H03K17/0424—Modifications for accelerating switching by feedback from the output circuit to the control circuit by the use of a transformer
-
- 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
- H02M3/22—Conversion of DC power input into DC power output with intermediate conversion into AC
- H02M3/24—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters
- H02M3/28—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC
- H02M3/325—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
-
- 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
- H02M3/10—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
- H02M3/158—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/10—Modifications for increasing the maximum permissible switched voltage
- H03K17/107—Modifications for increasing the maximum permissible switched voltage in composite switches
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
- H03K17/567—Circuits characterised by the use of more than one type of semiconductor device, e.g. BIMOS, composite devices such as IGBT
-
- 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
- H02M1/0048—Circuits or arrangements for reducing losses
- H02M1/0054—Transistor switching losses
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
- H03K17/687—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being field-effect transistors
- H03K2017/6875—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being field-effect transistors using self-conductive, depletion FETs
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Definitions
- Switching power supplies have a switching element with which a rectified as well
- the object is achieved by a switching power supply with a
- the switching element is a bipolar transistor and a
- the field effect transistor is a self-conducting field effect transistor. Also, the technical advantage is achieved that an available in large quantities and high quality electronic component can be used.
- a switched-mode power supply transformer is provided for latching, which has a center tap, which is electrically conductive with the
- the transformer has a winding which is electrically conductively connected to the switching element, wherein the center tap of the winding
- the switched-mode power supply has a transformer which has an input which is electrically conductively connected to an output of the switching element.
- the switched-mode power supply has an output rectifier which has an input which is electrically conductive with an output of the transformer connected is.
- the object is achieved by the use of a
- Bipolar transistor namely, to have high reverse voltages can be combined. This minimizes the switching losses.
- the object is achieved by a method for driving a cascode circuit. This achieves the technical advantage that the advantages of a field-effect transistor, namely to switch quickly, and the advantages of a
- Bipolar transistor namely, to have high reverse voltages can be combined. This minimizes the switching losses.
- Fig. 1 is a perspective view of an electrical assembly
- FIG. 2 is a perspective view of a carrier with a power supply component
- Fig. 3 is a schematic representation of a switched mode power supply
- FIG. 4 is a circuit diagram of a cascode of the switched mode power supply of FIG. 3;
- FIG. 1 shows a switched-mode power supply as an exemplary embodiment of an electrical subassembly 100.
- the electrical subassembly 100 has a housing 102 which is in the present embodiment
- Embodiment on its back 104 has a latching device 106, with which it is locked on a DIN rail 108.
- FIG. 2 shows an exemplary embodiment of a power supply component 200 of the electrical assembly 100.
- the power supply component 200 is designed as a switched-mode power supply 202 in the present exemplary embodiment.
- the power supply component 200 includes in the present embodiment, a plurality of electrical components 204, which are arranged in the present embodiment on a support 206 and connected accordingly.
- the switched-mode power supply 202 has a mains connection 330 for connection to a
- Mains voltage e.g. 230 volts, 50 Hz, and an output terminal 332, to which an electrical load (not shown) can be connected.
- the switching power supply 202 has in the present embodiment a
- Input rectifier 300 which rectifies and smooths the mains voltage.
- the input rectifier 300 in the present embodiment a line filter 302, a diode 304 or a bridge rectifier and a smoothing capacitor 306, such as a Elko on.
- the rectified and smoothed electrical voltage is then chopped.
- the switching power supply 202 in the present embodiment a switching element 308, which has an input 334 which is electrically connected to an output 336 of the input rectifier 300.
- the chopped electrical voltage is then transformed by a transformer 312.
- the transformer 312 in the present embodiment has an input 338, which is electrically conductively connected to an output 340 of the switching element 308.
- the transformer 312 has a ferrite core Transformer 314 on.
- the transformed electrical voltage is rectified and smoothed by an output rectifier 316 again.
- the output rectifier 316 has an input 342, which is electrically connected to an output 310 of the transformer 312.
- the output rectifier 316 has a diode 318 or a bridge rectifier and a second smoothing capacitor 320, such as, for example, FIG. an Elko, up.
- the switched-mode power supply 202 has a regulator 322 in the present exemplary embodiment.
- the controller 322 ensures in the present embodiment by means of pulse width modulation or pulse phase control that, apart from losses in the switching power supply 202 itself, only as much energy flows into the switching power supply 202 as is passed on to an electrical consumer.
- the switching power supply 202 has a controller 328 which controls the switching element 308 to bring the switching element 308 from a conductive state into a blocking state and vice versa.
- the switching element 308 is in the primary circuit of the ferrite core transformer 314, so that it is in the switching power supply 202 in
- the switching element 308 may be disposed in the secondary circuit of the ferrite core transformer 314, so that it is a secondary clocked switching power supply.
- FIG. 4 shows the switching element 308, which has a cascode 400 in the present exemplary embodiment.
- the cascode 400 has in the present embodiment, a bipolar transistor 402 and a field effect transistor 404, which are connected in series.
- the bipolar transistor 402 has a collector terminal 406, a base terminal 408 and an emitter terminal 410.
- the field effect transistor 404 has a drain terminal 412, a gate terminal 414 and a source terminal 416.
- the bipolar transistor 402 is an npn transistor.
- the bipolar transistor 402 has an electrical blocking voltage of 400 to 1000 VDC.
- the field effect transistor 404 is in the present embodiment, an n-type field effect transistor, such as a MOSFET.
- the field effect transistor 404 has an electrical blocking voltage of 10 to 30 VDC. For putting in the field effect transistor 404 in the present embodiment of the self-conductive type.
- the emitter terminal 410 of the bipolar transistor 402 and the drain terminal 412 of the field-effect transistor 404 are directly electrically conductively connected to one another in the present exemplary embodiment.
- collector terminal 406 is electrically connected to the output 336 of the first rectifier 300, and the source terminal 416 is electrically connected to an input 342 of the ferrite core transformer 314 of the transformer 312.
- the bipolar transistor 402 is driven by the controller 328 to be in a conductive state.
- the cascode 400 is self-conducting, since the
- Field effect transistor 404 is of the normally-on type. In order to bring the cascode 400 into a blocking state, the controller 328 controls the field effect transistor 404 so that the electrical drain voltage and thus the emitter voltage of the
- Bipolar transistor 402 rises to a value which is above the voltage applied to the base terminal 408 electrical voltage (to ground). As a result, the base of the bipolar transistor 402 is cleared of charge carriers, so that the
- Bipolar transistor 402 changes to the blocking state and the high reverse voltage takes over.
- 5 shows a further exemplary embodiment of a cascode 400.
- the cascode 400 shown in FIG. 5 has the same structure as the cascode 400 illustrated in FIG. 4, except that the emitter terminal 410 of the bipolar transistor 402 is electrically conductively connected to an input 500 of a winding 502 of an auxiliary transformer 504. Furthermore, the drain terminal 412 is electrically conductively connected to an output 506 of the winding 502 of the auxiliary transformer 504. Of the
- Auxiliary transformer 504 has in the present embodiment, a second winding 508, which is magnetically coupled to the first winding 502.
- the second winding 508 is electrically conductively connected to a transducer unit 510, which converts the voltage induced in the second coil 508 electrical voltage and optionally smoothes.
- the converter unit 510 has an output 512, which is electrically conductively connected to the base terminal 408 of the bipolar transistor 402.
- Transducer unit 510 is converted and the base terminal 408 of the bipolar transistor 402 is supplied, which causes as a drive signal that the bipolar transistor 402 remains in the conductive state.
- the cascode 400 is operated in a self-holding.
- FIG. 6 shows a further exemplary embodiment of the switched-mode power supply 202.
- the switched-mode power supply 202 illustrated in FIG. 5 has the same construction as the switched-mode power supply 202 illustrated in FIG. 3, except that the transformer 312 has a switched mode power transformer 600 with a first winding 602 and with a second winding 604, wherein present embodiment, the first winding 602 has an additional center labgriff 606, which is electrically connected to the converter unit 510, whose output 512 is in turn connected electrically conductively. Consequently In contrast to the previous embodiment shown in FIG. 5, this exemplary embodiment does not have an auxiliary transformer 504.
- the cascode 400 In operation, when the cascode 400 is in the conducting state, an electrical current flows through the first winding 602 of the transformer, such that an electrical voltage is induced in the second winding 604 of the switched mode power transformer 600, which is converted by the converter unit 510 and the Base terminal 408 of the bipolar transistor 402 is supplied, which causes as a drive signal that the bipolar transistor 402 remains in the conductive state.
- the cascode 400 is also operated here in a latching. Otherwise, the operation of this embodiment corresponds to the embodiment shown in Fig. 4.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
- Amplifiers (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102012112391.8A DE102012112391B4 (de) | 2012-12-17 | 2012-12-17 | Schaltnetzteil mit einer Kaskodenschaltung |
| PCT/EP2013/074095 WO2014095201A1 (de) | 2012-12-17 | 2013-11-18 | Schaltnetzteil mit einer kaskodenschaltung |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP2932597A1 true EP2932597A1 (de) | 2015-10-21 |
Family
ID=49622818
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP13792904.8A Withdrawn EP2932597A1 (de) | 2012-12-17 | 2013-11-18 | Schaltnetzteil mit einer kaskodenschaltung |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20160043640A1 (de) |
| EP (1) | EP2932597A1 (de) |
| CN (1) | CN105229926A (de) |
| DE (1) | DE102012112391B4 (de) |
| WO (1) | WO2014095201A1 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10090766B2 (en) | 2015-11-11 | 2018-10-02 | Halliburton Energy Services, Inc. | Reusing electromagnetic energy from a voltage converter downhole |
| CN107786073B (zh) * | 2017-12-09 | 2023-11-07 | 中国电子科技集团公司第四十三研究所 | 一种开关电源标准单元电路及装置 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2163309A (en) * | 1984-08-17 | 1986-02-19 | Lutron Electronics Co | High frequency gas discharge lamp dimming ballast |
| EP0605925A2 (de) * | 1993-01-04 | 1994-07-13 | Koninklijke Philips Electronics N.V. | Leistungsversorgungsschaltung |
Family Cites Families (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4663547A (en) | 1981-04-24 | 1987-05-05 | General Electric Company | Composite circuit for power semiconductor switching |
| JP2855816B2 (ja) * | 1990-07-25 | 1999-02-10 | 三菱電機株式会社 | 半導体制御装置 |
| WO2001086795A1 (en) * | 2000-05-11 | 2001-11-15 | Sony Corporation | Switching power supply |
| DE20109957U1 (de) * | 2001-06-15 | 2002-07-18 | Siemens AG, 80333 München | Schaltungsanordnung zum Steuern der einer Last zugeführten Leistung |
| AT411945B (de) * | 2001-07-16 | 2004-07-26 | Siemens Ag Oesterreich | Schalteinrichtung |
| JP2005501459A (ja) * | 2001-08-23 | 2005-01-13 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | 高周波電力増幅回路 |
| JP3627708B2 (ja) * | 2002-01-25 | 2005-03-09 | 株式会社村田製作所 | スイッチング電源装置 |
| CN1457139A (zh) * | 2002-05-08 | 2003-11-19 | 精工爱普生株式会社 | 具有过压输出保护电路的稳压开关电源及电子设备 |
| US6903943B2 (en) * | 2002-05-10 | 2005-06-07 | Shindengen Electric Manufacturing Co. Ltd. | Switching circuit |
| DE10325872A1 (de) * | 2003-06-06 | 2004-12-23 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Ansteuerschaltung für den Betrieb mindestens einer Lampe in einem dazugehörigen Lastkreis |
| US7345894B2 (en) * | 2005-09-27 | 2008-03-18 | Carl Sawtell | Cascode switch power supply |
| JP4414446B2 (ja) * | 2007-04-13 | 2010-02-10 | 株式会社ケー・エー・シー・ジャパン | スイッチング電源回路 |
| US7911814B2 (en) * | 2008-05-30 | 2011-03-22 | Active-Semi, Inc. | Constant current and voltage controller in a three-pin package with dual-use power pin |
| US20100309689A1 (en) * | 2009-06-03 | 2010-12-09 | David Coulson | Bootstrap Circuitry |
| US8248145B2 (en) * | 2009-06-30 | 2012-08-21 | Cirrus Logic, Inc. | Cascode configured switching using at least one low breakdown voltage internal, integrated circuit switch to control at least one high breakdown voltage external switch |
| CN101662218A (zh) * | 2009-09-04 | 2010-03-03 | 福建星网锐捷网络有限公司 | 一种开关电源、系统及保护方法 |
| JP4787350B2 (ja) * | 2009-10-14 | 2011-10-05 | Smk株式会社 | 自励式スイッチング電源回路 |
| DE102010027832B3 (de) * | 2010-04-15 | 2011-07-28 | Infineon Technologies AG, 85579 | Halbleiterschaltanordnung mit einem selbstleitenden und einem selbstsperrenden Transistor |
| DE102010038623A1 (de) | 2010-07-29 | 2012-02-02 | Robert Bosch Gmbh | Schaltungsanordnung und Verfahren zur Begrenzung von Stromstärke und/oder Flankensteilheit elektrischer Signale |
| CN102377327B (zh) * | 2010-08-11 | 2015-11-25 | 快捷半导体公司 | 高压启动电路 |
| US8638575B2 (en) * | 2010-08-11 | 2014-01-28 | Fairchild Semiconductor Corporation | High voltage startup circuit |
| US8947896B2 (en) * | 2011-10-11 | 2015-02-03 | Fairchild Semiconductor Corporation | Proportional bias switch driver circuit |
| US8981819B2 (en) * | 2011-12-23 | 2015-03-17 | Fairchild Semiconductor Corporation | Proportional bias switch driver circuit with current transformer |
| US9013903B2 (en) * | 2012-02-07 | 2015-04-21 | Fairchild Semiconductor Corporation | High side driver circuitry |
| US10014771B2 (en) * | 2013-12-06 | 2018-07-03 | Astec International Limited | Switching shunt regulator circuits |
| US10050620B2 (en) * | 2015-02-27 | 2018-08-14 | Renesas Electronics America Inc. | Cascode connected SiC-JFET with SiC-SBD and enhancement device |
-
2012
- 2012-12-17 DE DE102012112391.8A patent/DE102012112391B4/de not_active Expired - Fee Related
-
2013
- 2013-11-18 EP EP13792904.8A patent/EP2932597A1/de not_active Withdrawn
- 2013-11-18 CN CN201380066095.0A patent/CN105229926A/zh active Pending
- 2013-11-18 WO PCT/EP2013/074095 patent/WO2014095201A1/de not_active Ceased
- 2013-11-18 US US14/652,732 patent/US20160043640A1/en not_active Abandoned
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2163309A (en) * | 1984-08-17 | 1986-02-19 | Lutron Electronics Co | High frequency gas discharge lamp dimming ballast |
| EP0605925A2 (de) * | 1993-01-04 | 1994-07-13 | Koninklijke Philips Electronics N.V. | Leistungsversorgungsschaltung |
Non-Patent Citations (3)
| Title |
|---|
| GOODFELLOW J K ET AL: "The bipolar transistor and GTO thyristor in a high power, high frequency cascode switch configuration", 19880411; 19880411 - 19880414, 11 April 1988 (1988-04-11), pages 695 - 702, XP010070224 * |
| See also references of WO2014095201A1 * |
| TIETZE U ET AL: "FELDEFFEKTTRANSISTOREN, HALBLEITER-SCHALTUNGSTECHNIK", HALBLEITER-SCHALTUNGSTECHNIK, XX, XX, 1 January 1993 (1993-01-01), pages 83 - 84, XP002216831 * |
Also Published As
| Publication number | Publication date |
|---|---|
| US20160043640A1 (en) | 2016-02-11 |
| WO2014095201A1 (de) | 2014-06-26 |
| CN105229926A (zh) | 2016-01-06 |
| DE102012112391B4 (de) | 2018-10-04 |
| DE102012112391A1 (de) | 2014-06-18 |
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