EP4449611A1 - Elektrogerät mit einer treiberschaltung zur versorgung eines steuereingangs eines steuerbaren ersten halbleiterschalters - Google Patents
Elektrogerät mit einer treiberschaltung zur versorgung eines steuereingangs eines steuerbaren ersten halbleiterschaltersInfo
- Publication number
- EP4449611A1 EP4449611A1 EP22822179.2A EP22822179A EP4449611A1 EP 4449611 A1 EP4449611 A1 EP 4449611A1 EP 22822179 A EP22822179 A EP 22822179A EP 4449611 A1 EP4449611 A1 EP 4449611A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- switch
- semiconductor switch
- driver circuit
- resistor
- controllable
- 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.)
- Pending
Links
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
- H03K17/041—Modifications for accelerating switching without feedback from the output circuit to the control circuit
- H03K17/0412—Modifications for accelerating switching without feedback from the output circuit to the control circuit by measures taken in the control circuit
- H03K17/04123—Modifications for accelerating switching without feedback from the output circuit to the control circuit by measures taken in the control circuit in field-effect transistor switches
-
- 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
- H03K17/041—Modifications for accelerating switching without feedback from the output circuit to the control circuit
- H03K17/0412—Modifications for accelerating switching without feedback from the output circuit to the control circuit by measures taken in the control circuit
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K2217/00—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
- H03K2217/0036—Means reducing energy consumption
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K2217/00—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
- H03K2217/009—Resonant driver circuits
Definitions
- the invention relates to an electrical device with a driver circuit for supplying a control input of a controllable first semiconductor switch.
- control input of a power semiconductor can be controlled by a driver circuit.
- a driver circuit for an IGBT that has two half-bridges and is to be operated in a time-controlled manner is known as the closest prior art.
- a control circuit for a switching element is known from DE 11 2012 007 247 T5.
- An adjustable hybrid switch for power converters is known from WO 2021/074 387 A1.
- the object of the invention is therefore to reduce power losses in an electrical device.
- the object is achieved with the electrical device according to the features specified in claim 1.
- a driver circuit for supplying a control input of a controllable first semiconductor switch, in particular a field effect-controlled semiconductor switch, in particular a load current, in particular a load current of more than 10 amperes, from the first controllable semiconductor switch can be switched and/or controlled, wherein the turn-on current path leading from the driver circuit to the control input, in particular of the driver circuit, has an inductance, in particular no inductance being arranged in the turn-off current path leading from the control input to the driver circuit.
- the advantage here is that when switching on, in particular during the collector-emitter or drain-source voltage change at the first controllable semiconductor switch, the power semiconductor, i.e. the first controllable semiconductor switch, the charging current through the inductance is constant and thus the intrinsic capacitance in particular at the Control input of the semiconductor switch can only be loaded with a constant current.
- the duration of the Miller plateau is independent of the load current, that is to say essentially independent of the load current to be switched by the first semiconductor switch.
- the current and voltage curves are advantageously such that less power loss is generated when switching on.
- the switching behavior according to the invention is therefore controlled by an oscillating circuit in a physically given and therefore safer manner, in contrast to the time-controlled, in particular computer-controlled switching behavior of the prior art.
- the turn-off current path has no inductance designed as a component.
- a low inductance value of the electrical lines is present for physical reasons, but is smaller by orders of magnitude than the inductance value of the entire switch-on current path, since this has the inductance designed as a component.
- inductance is understood to mean the inductance implemented as a component.
- the inductance is dimensioned such that the rate of voltage change dU/dt in the area of the Miller plateau, in particular of the controllable first semiconductor switch, is independent of the load current, in particular of the load current to be controlled by the controllable first semiconductor switch.
- the advantage here is that the inductance limits the rate of voltage change or stabilizes it over the load current range, and the voltage curves and current curves are thus brought about in such a way that the power loss is reduced.
- a resistor R_ON in particular an ohmic resistor, is connected in parallel with the inductor, in particular with the resistor R_ON being designed as a component. The advantage here is that there is no purely inductive behavior in the switch-on current path and the tendency to oscillate is thus prevented.
- the driver circuit has a half-bridge which has a first switch in its upper branch, in particular and the inductor, and a second switch in its lower branch, in particular the upper branch being formed from the first switch and a first resistor Having a series circuit, in particular wherein the lower branch has a series circuit formed from the first switch and a second resistor.
- a connection, in particular the emitter or source, of the first switch is connected via the first resistor R_ON and the second resistor R_OFF, which is connected in series with the first resistor R_ON, to a connection, in particular the collector or drain, of the second switch, in particular where the inductor L_ON is connected in parallel with the first resistor R_ON.
- a second controllable semiconductor switch in particular a field-effect-controlled semiconductor switch, is connected to the first controllable semiconductor switch.
- the advantage here is that large currents can be switched, since the load current is divided between the semiconductor switches.
- the turn-off current path leading from the control input to the driver circuit has an ohmic resistance, ie in particular no inductance.
- the advantage here is that no current limitation is implemented in the switch-off path, thus enabling rapid switch-off.
- a second controllable semiconductor switch is connected in parallel to the first controllable semiconductor switch, the first controllable semiconductor switch being driven synchronously with the second controllable semiconductor switch.
- the driver circuit is supplied with a DC voltage, the upper potential of which is connected to the drain connection or collector connection of the first switch, the lower potential being connected to the source connection or emitter connection of the second switch, in particular where the first switch is a field effect transistor and/or wherein the second switch is a field effect transistor.
- an additional capacitance is provided from the control input of the first controllable semiconductor switch to its source or emitter, and/or an additional capacitance is provided from the control input of the second controllable semiconductor switch to its source or emitter.
- FIG. 1 An electronic circuit of a first electrical device according to the invention is shown schematically in FIG.
- a controllable semiconductor switch V1 which is a field-effect-controlled semiconductor switch, in particular an IGBT or a MOSFET, is driven by a driver circuit.
- the driver circuit has a half-bridge made up of two switches (T1, T2), in particular transistors or field-effect transistors, with the first switch T1 being connected in series with a parallel circuit made up of a resistor R_ON and an inductance L_ON preferably embodied as a component.
- a resistor R_OFF is connected in series to the second switch T2.
- the center tap is arranged between the parallel circuit and the resistor R_OFF and feeds the control input of the first controllable semiconductor switch V1 via a resistor RP1.
- the resistor RP1 can preferably be implemented as an internal gate resistor, so that a real component can even be saved.
- the first switch T1 becomes conductive and thus connects an upper potential of a DC voltage via the parallel circuit and the resistor RP1 to the control input of the first controllable semiconductor switch.
- the switch-on path has the parallel circuit and the resistor RP1.
- the second switch T2 remains blocking.
- the first switch T1 is opened and the second switch T2 becomes conductive, so that the control input of the first controllable semiconductor switch V1 is connected to the lower potential of the DC voltage via the resistor RP1 and the resistor R_OFF.
- the driver circuit thus has the first switch T1 in the switch-on path, the current passed through it, in particular the output current, in the conductive state of the first switch T1 via a parallel connection of the inductance L_ON and a resistive Resistor R_ON is performed and is then fed via the further resistor RP1 to the control input of the controllable semiconductor switch V1.
- the dashed path in FIG. 1 indicates a controllable switch V2 that is additionally provided in parallel with the first controllable switch V1, so that higher power levels can be switched.
- the controllable semiconductor switch V1 has a gate-drain capacitance or base-collector capacitance, which is referred to as a Miller capacitance.
- the control current When switching on, the control current initially charges the gate-source capacitance or base-emitter capacitance until a threshold voltage, in particular a threshold voltage, is reached, from which point the load current begins to flow. The load current then flows from the drain to the source connection or from the collector to the emitter connection of the controllable semiconductor switch V1. During this period of the switch-on phase, the drain-source voltage or collector-emitter voltage is reduced. If the controllable semiconductor switch V1 carries the load current completely, the further switching on reduces the drain-source voltage or collector-emitter voltage.
- a threshold voltage in particular a threshold voltage
- the inductance L_ON is arranged in the switch-on path, and its behavior as a current source keeps the control current essentially constant.
- the Miller capacitance of the first controllable semiconductor switch V1 is therefore only charged with an essentially constant current, so that the rate of voltage change dll/dt is also constant, ie independent of the magnitude of the load current.
- the rate of voltage change dll/dt is independent of the load current, despite the actual load current-dependent voltage level of the Miller plateau.
- the inductance L_ON is dimensioned in such a way that the rate of voltage change dU/dt is independent of the load current, specifically in the widest possible range of the load current, in particular not just around the nominal current, but preferably in the range from 20% to 100% of the nominal current.
- an additional capacitance is provided from the control input of the respective first controllable semiconductor switch to its source or emitter. This enables adjustment of current time change.
- the Miller capacitance is recharged.
- a plurality of controllable switches V2 are additionally provided in parallel with the first controllable switch V1, so that greater powers can be switched.
- V1 first controllable semiconductor switch
Landscapes
- Electronic Switches (AREA)
- Power Conversion In General (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102021006145 | 2021-12-13 | ||
| PCT/EP2022/083547 WO2023110384A1 (de) | 2021-12-13 | 2022-11-28 | Elektrogerät mit einer treiberschaltung zur versorgung eines steuereingangs eines steuerbaren ersten halbleiterschalters |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4449611A1 true EP4449611A1 (de) | 2024-10-23 |
Family
ID=84487628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22822179.2A Pending EP4449611A1 (de) | 2021-12-13 | 2022-11-28 | Elektrogerät mit einer treiberschaltung zur versorgung eines steuereingangs eines steuerbaren ersten halbleiterschalters |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4449611A1 (de) |
| CN (1) | CN118382999A (de) |
| DE (1) | DE102022004447A1 (de) |
| WO (1) | WO2023110384A1 (de) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4443719A (en) * | 1982-06-11 | 1984-04-17 | Honeywell Inc. | Voltage isolated gate drive circuit |
| JP5197658B2 (ja) * | 2010-03-10 | 2013-05-15 | 株式会社東芝 | 駆動回路 |
| US8456201B2 (en) * | 2011-07-06 | 2013-06-04 | Eaton Corporation | Energy-recycling resonant drive circuits for semiconductor devices |
| US9461640B2 (en) | 2012-12-21 | 2016-10-04 | Mitsubishi Electric Corporation | Switching element drive circuit, power module, and automobile |
| CN103986315B (zh) | 2014-06-10 | 2016-08-17 | 安徽工业大学 | 基于有源栅极电流控制方式的igbt电流源驱动电路及其控制方法 |
| EP2980993B1 (de) * | 2014-07-30 | 2019-10-23 | Tridonic GmbH & Co KG | Betriebsgerät für eine Lichtquelle und Verfahren zum Steuern eines Betriebsgeräts |
| EP3136599A1 (de) * | 2015-08-26 | 2017-03-01 | Siemens Aktiengesellschaft | Schaltungsanordnung mit feldeffekttransistor und ansteuerung über induktivität |
| GB2588219B (en) | 2019-10-17 | 2024-04-03 | Mtal Gmbh | Adjustable hybrid switch for power converters and methods of operating the same |
-
2022
- 2022-11-28 DE DE102022004447.1A patent/DE102022004447A1/de active Pending
- 2022-11-28 EP EP22822179.2A patent/EP4449611A1/de active Pending
- 2022-11-28 WO PCT/EP2022/083547 patent/WO2023110384A1/de not_active Ceased
- 2022-11-28 CN CN202280082174.XA patent/CN118382999A/zh active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE102022004447A1 (de) | 2023-06-15 |
| WO2023110384A1 (de) | 2023-06-22 |
| CN118382999A (zh) | 2024-07-23 |
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