DE10227831A1 - Switch converter has rectifying mos transistor with load between inductance and capacitor energy stores controlled by voltage between the two stores - Google Patents
Switch converter has rectifying mos transistor with load between inductance and capacitor energy stores controlled by voltage between the two stores Download PDFInfo
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- DE10227831A1 DE10227831A1 DE2002127831 DE10227831A DE10227831A1 DE 10227831 A1 DE10227831 A1 DE 10227831A1 DE 2002127831 DE2002127831 DE 2002127831 DE 10227831 A DE10227831 A DE 10227831A DE 10227831 A1 DE10227831 A1 DE 10227831A1
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- 239000003990 capacitor Substances 0.000 title abstract description 25
- 230000001939 inductive effect Effects 0.000 claims abstract description 28
- 239000004065 semiconductor Substances 0.000 claims description 20
- 238000004146 energy storage Methods 0.000 claims description 18
- 238000005516 engineering process Methods 0.000 claims description 4
- 230000003071 parasitic effect Effects 0.000 claims description 4
- 230000006798 recombination Effects 0.000 claims description 4
- 238000005215 recombination Methods 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 3
- 229910021332 silicide Inorganic materials 0.000 claims description 3
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 claims description 3
- 239000008186 active pharmaceutical agent Substances 0.000 claims description 2
- 239000002800 charge carrier Substances 0.000 description 3
- 230000001419 dependent effect Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 101001064460 Gallus gallus Ephrin type-B receptor 3 Proteins 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 2
- 229910010271 silicon carbide Inorganic materials 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. PN junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/76—Unipolar devices, e.g. field effect transistors
- H01L29/772—Field effect transistors
- H01L29/78—Field effect transistors with field effect produced by an insulated gate
- H01L29/7801—DMOS transistors, i.e. MISFETs with a channel accommodating body or base region adjoining a drain drift region
- H01L29/7802—Vertical DMOS transistors, i.e. VDMOS transistors
- H01L29/7803—Vertical DMOS transistors, i.e. VDMOS transistors structurally associated with at least one other device
- H01L29/7806—Vertical DMOS transistors, i.e. VDMOS transistors structurally associated with at least one other device the other device being a Schottky barrier diode
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. PN junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/76—Unipolar devices, e.g. field effect transistors
- H01L29/772—Field effect transistors
- H01L29/78—Field effect transistors with field effect produced by an insulated gate
- H01L29/7801—DMOS transistors, i.e. MISFETs with a channel accommodating body or base region adjoining a drain drift region
- H01L29/7802—Vertical DMOS transistors, i.e. VDMOS transistors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. PN junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/76—Unipolar devices, e.g. field effect transistors
- H01L29/772—Field effect transistors
- H01L29/78—Field effect transistors with field effect produced by an insulated gate
- H01L29/7801—DMOS transistors, i.e. MISFETs with a channel accommodating body or base region adjoining a drain drift region
- H01L29/7802—Vertical DMOS transistors, i.e. VDMOS transistors
- H01L29/7803—Vertical DMOS transistors, i.e. VDMOS transistors structurally associated with at least one other device
- H01L29/7808—Vertical DMOS transistors, i.e. VDMOS transistors structurally associated with at least one other device the other device being a breakdown diode, e.g. Zener diode
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. PN junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/76—Unipolar devices, e.g. field effect transistors
- H01L29/772—Field effect transistors
- H01L29/78—Field effect transistors with field effect produced by an insulated gate
- H01L29/7801—DMOS transistors, i.e. MISFETs with a channel accommodating body or base region adjoining a drain drift region
- H01L29/7802—Vertical DMOS transistors, i.e. VDMOS transistors
- H01L29/7813—Vertical DMOS transistors, i.e. VDMOS transistors with trench gate electrode, e.g. UMOS transistors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. PN junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/76—Unipolar devices, e.g. field effect transistors
- H01L29/772—Field effect transistors
- H01L29/78—Field effect transistors with field effect produced by an insulated gate
- H01L29/7827—Vertical transistors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. PN junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/76—Unipolar devices, e.g. field effect transistors
- H01L29/772—Field effect transistors
- H01L29/78—Field effect transistors with field effect produced by an insulated gate
- H01L29/7827—Vertical transistors
- H01L29/7828—Vertical transistors without inversion channel, e.g. vertical ACCUFETs, normally-on vertical MISFETs
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- 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
- H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
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- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. PN junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/40—Electrodes ; Multistep manufacturing processes therefor
- H01L29/41—Electrodes ; Multistep manufacturing processes therefor characterised by their shape, relative sizes or dispositions
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. PN junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/76—Unipolar devices, e.g. field effect transistors
- H01L29/772—Field effect transistors
- H01L29/78—Field effect transistors with field effect produced by an insulated gate
- H01L29/7838—Field effect transistors with field effect produced by an insulated gate without inversion channel, e.g. buried channel lateral MISFETs, normally-on lateral MISFETs, depletion-mode lateral MISFETs
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. PN junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/76—Unipolar devices, e.g. field effect transistors
- H01L29/772—Field effect transistors
- H01L29/78—Field effect transistors with field effect produced by an insulated gate
- H01L29/7839—Field effect transistors with field effect produced by an insulated gate with Schottky drain or source contact
Abstract
Description
Die vorliegende Erfindung betrifft einen Schaltwandler gemäß den Merkmalen des Oberbegriffs des Patentanspruchs 1.The present invention relates to a switching converter according to the features the preamble of claim 1.
Ein derartiger Schaltwandler ist
hinlänglich bekannt
und beispielsweise in Köstner,
Möschwitzer: "Elektronische Schaltungen", Hanser Verlag,
München,
1993 beschrieben. Der Aufbau und die Funktionsweise eines derartigen
Schaltwandlers nach dem Stand der Technik werden nachfolgend anhand
von
Der Schaltwandler umfasst Eingangsklemmen EK1, EK2 zum Anlegen einer Eingangsspannung Uin und Ausgangsklemmen AK10, AK20 an denen eine Ausgangsspannung Uout für eine Last zur Verfügung steht. Eine Reihenschaltung mit einem induktiven Energiespeicher, beispielsweise einer Drossel L10, und einem getaktet angesteuerten Schalter S10 sind zwischen die Eingangsklemmen EK10 und EK20 geschaltet. Parallel zu dem Schalter S10 liegt eine Reihenschaltung mit einer Diode D10 und einem Ausgangskondensator C10, über welchem die Ausgangsspannung Uout anliegt. Ist der getaktet angesteuerte Schalter S10 geschlossen, so nimmt die Drossel L10 Energie über die Eingangsklemmen EK10, EK20 auf. Wird der Schalter S10 anschließend geöffnet, so steigt das Potential an dem der Drossel L10 und dem Schalter S10 gemeinsamen Knoten an und die in der Spule gespeicherte Energie L10 wird über die Diode D10 an den Ausgangskondensator C10 abgegeben. Das Potential an dem der Drossel L10 und dem Schalter S10 gemeinsamen Knoten kann abhängig von der durch die Drossel L10 während des geschlossenen Schalters S10 aufgenommenen Energie die Eingangsspannung Uin übersteigen, so dass mit dem dargestellten Schaltwandler Ausgangsspannungen Uout möglich sind, die größer als die Eingangsspannung Uin sind.The switching converter includes input terminals EK1, EK2 for applying an input voltage Uin and output terminals AK10, AK20 at which an output voltage Uout is available for a load. A series connection with an inductive energy store, for example a choke L10, and a clocked switch S10 are connected between the input terminals EK10 and EK20. Parallel to the switch S10 there is a series connection with a diode D10 and an output capacitor C10, across which the output voltage Uout is concerned. If the clocked controlled switch S10 is closed, the choke L10 takes energy via the input terminals EK10, EK20 on. If switch S10 is then opened, the potential increases at the node common to the choke L10 and the switch S10 at and The energy L10 stored in the coil is passed through the diode D10 to the output capacitor C10 issued. The potential at that of the choke L10 and the switch S10 common node can be dependent from the through the choke L10 during of the closed switch S10 absorbed energy the input voltage Exceed uin so that with the switching converter shown output voltages Uout possible are larger than are the input voltage Uin.
Als Diode D10 werden bei herkömmlichen Schaltwandlern üblicherweise pn-Dioden verwendet. Diese Dioden besitzen aller dings den Nachteil, dass sie in leitendem Zustand Ladungsträger speichern, die bei anschließendem Anlegen einer Sperrspannung erst abgeführt werden müssen, bevor die Diode sperrt. Die Diode bleibt also auch bei Anlegen einer Sperrspannung noch für eine gewisse Zeitdauer, bis die Ladungsträger abgeflossen sind, leitend. Dies begrenzt die maximale Schaltfrequenz, also die Frequenz, mit der der Schalter S10 getaktet geöffnet und geschlossen wird.The diode D10 is usually used in conventional switching converters pn diodes used. However, these diodes have the disadvantage that they store charge carriers in the conductive state, which are then created a reverse voltage only dissipated Need to become, before the diode turns off. The diode remains even when a reverse voltage is applied still for a certain period of time until the charge carriers have flowed off. This limits the maximum switching frequency, i.e. the frequency which the switch S10 opens clocked and is closed.
Zur Lösung dieses Problems ist es bekannt, Silizium-Karbid-Dioden zu verwenden, bei denen in leitendem Zustand keine Ladungsträger gespeichert werden. Allerdings sind derartige Silizium-Karbid-Dioden bislang sehr teuer.It is to solve this problem known, silicon carbide diodes to be used in which no charge carriers are stored in the conductive state. However, such silicon carbide diodes have so far been very expensive.
Ziel der vorliegenden Erfindung ist es, einen Schaltwandler der eingangs genannten Art zur Verfügung zu stellen, der einfach und kostengünstig realisierbar ist und der mit hohen Schaltfrequenzen betrieben werden kann.The aim of the present invention is it, a switching converter of the type mentioned is available make that simple and inexpensive is feasible and can be operated with high switching frequencies can.
Dieses Ziel wird durch einen Schaltwandler gemäß den Merkmalen des Anspruchs 1 erreicht. Vorteilhafte Ausgestaltungen in der Erfindung sind Gegenstand der Unteransprüche.This goal is achieved by a switching converter according to the features of claim 1 achieved. Advantageous embodiments in the invention are the subject of the subclaims.
Der erfindungsgemäße Schaltwandler umfasst Eingangsklemmen zum Anlegen einer Eingangsspannung und Ausgangsklemmen zum Bereitstellen einer Ausgangsspannung, eine Reihenschaltung mit einem induktiven Energiespeicher und einem Schalter, die zwischen die Eingangsklemmen geschaltet ist, und eine Reihenschaltung mit einer Gleichrichteranordnung und einem kapazitiven Energiespeicher parallel zu dem Schalter, wobei die Ausgangsspannung über dem kapazitiven Energiespeicher anliegt. Die Gleichrichteranordnung umfasst einen MOS-Transistor mit einer floatend angeordneten oder hochohmig angeschlossenen Body-Zone, der eine Laststrecke und einen Ansteueranschluss aufweist, wobei die Laststrecke zwischen den induktiven Energiespeicher und den kapazitiven Energiespeicher geschaltet ist und wobei der MOS-Transistor abhängig von einer Spannung zwischen dem induktiven Energiespeicher und dem kapazitiven Energiespeicher angesteuert ist.The switching converter according to the invention comprises input terminals for applying an input voltage and output terminals for provision an output voltage, a series connection with an inductive Energy storage and a switch connected between the input terminals is, and a series circuit with a rectifier arrangement and a capacitive energy storage parallel to the switch, wherein the output voltage over the capacitive energy storage. The rectifier arrangement includes a MOS transistor with a floating or high-resistance connected body zone, which has a load path and a control connection, wherein the load path between the inductive energy storage and the capacitive energy storage is switched and the MOS transistor dependent of a voltage between the inductive energy storage and the capacitive energy storage is controlled.
Die Verwendung eines MOS-Transistors mit einer floatend angeordneten oder hochohmig an einen der Laststreckenanschlüsse angeschlossenen Body-Zone als Gleichrichterelement bringt folgende Vorteile mit sich: Derartige MOS-Transistoren sind in Silizium-Technologie einfach und kostengünstig realisierbar. Darüber hinaus werden bei derartigen MOS-Transistoren, in leitendem Zustand keine Ladungsträger gespeichert, so dass hohe Schaltfrequenzen erzielbar sind. Der Begriff MOS-Transistor mit floatend angeordneter Body-Zone wird im Folgenden synonym auch für solche MOS-Transistoren verwendet, bei denen die Body-Zone hochohmig an den Source-Anschluss angeschlossen ist. Derartige MOS-Transistoren, deren Body-Zone floatend angeordnet ist, sperren abhängig von einem angelegten Ansteuerpotential in beiden Richtungen, sie besitzen also keine integrierte Freilaufdiode, die bei MOS-Transistoren vorhanden ist, bei denen die Source-Zone und die Body-Zone kurzgeschlossen sind.The use of a MOS transistor with a floating body zone or a high-resistance body zone connected to one of the load path connections as a rectifier element has the following advantages: Such MOS transistors can be implemented simply and inexpensively using silicon technology. About that In addition, such MOS transistors are in the conductive state no load carriers saved so that high switching frequencies can be achieved. The term MOS transistor with In the following, a body zone arranged in a floating manner becomes synonymous for such zones MOS transistors are used in which the body zone with high resistance to the Source connector is connected. Such MOS transistors, whose body zone is arranged floating, lock depending on an applied control potential in both directions, so they have no integrated free-wheeling diode, which is present in MOS transistors in which the source zone and the body zone are short-circuited.
Der Aufbau und die Funktionsweise
derartiger MOS-Transistoren mit einer floatend angeordneten Body-Zone
ist hinlänglich
bekannt und beispielsweise in folgenden Druckschriften beschrieben:
Zur Ansteuerung des MOS-Transistors abhängig von der zwischen dem induktiven Energiespeicher und dem kapazitiven Energiespeicher anliegenden Spannung ist eine Ansteuerschaltung vorgesehen, die bei einer Ausführungsform erste und zweite Eingangsklemmen und eine Ausgangsklemme aufweist, wobei die Ausgangsklemme an den Ansteueranschluss des MOS-Transistors angeschlossen ist und wobei die erste Eingangsklemme an den induktiven Energiespeicher und die zweite Eingangsklemme an den kapazitiven Energiespeicher angeschlossen ist, so dass zwi schen den ersten und zweiten Eingangsklemmen die zwischen dem induktiven und dem kapazitiven Energiespeicher anliegende Spannung anliegt.To control the MOS transistor Depending on the voltage present between the inductive energy store and the capacitive energy store, a control circuit is provided, which in one embodiment has first and second input terminals and an output terminal, the output terminal being connected to the control terminal of the MOS transistor and the first input terminal being connected to the inductive energy store and the second input terminal is connected to the capacitive energy store, so that between the first and second input terminals the voltage present between the inductive and the capacitive energy store is present.
Zur Bereitstellung eines geeigneten Ansteuerpotentials für den MOS-Transistor ist vorzugsweise eine Spannungsversorgungsschaltung vorgesehen, die beispielsweise als Bootstrap-Schaltung ausgebildet ist, und die an den induktiven Energiespeicher gekoppelt ist und stets ein Ansteuerpotential bereitstellt, welches um einen vorgegebenen Wert oberhalb des Potentials an einem der Anschlüsse des induktiven Energiespeichers liegt. Das durch diese Spannungsversorgungsschaltung bereitgestellte Ansteuerpotential ist einem Ansteuerpotentialeingang der Ansteuerschaltung zugeführt.To provide a suitable Driving potential for the MOS transistor is preferably a voltage supply circuit provided, which is designed for example as a bootstrap circuit, and the the inductive energy storage is coupled and always a control potential provides which is above the potential by a predetermined value on one of the connections of the inductive energy store. That through this voltage supply circuit The control potential provided is a control potential input Drive circuit supplied.
Vorzugsweise umfasst die Ansteuerschaltung einen Schalter, der zwischen den Ansteuerpotentialeingang und die Ausgangsklemme geschaltet ist und der nach Maßgabe der zwischen der ersten und zweiten Eingangsklemme anliegenden Spannung leitet oder sperrt, um den MOS-Transistor abhängig von dieser Spannung leitend oder sperrend anzusteuern. Die Ansteuerschaltung ist dabei so ausgebildet, dass sie den MOS-Transistor dann leitend ansteuert, wenn das Potential an dem induktiven Energiespeicher größer ist als das Potential an dem kapazitiven Energiespeicher, um dann einen Strom von dem induktiven Energiespeicher zu dem kapazitiven Energiespeicher zu ermöglichen. Der MOS-Transistor wird durch die Ansteuerschaltung gesperrt, wenn das Potential an dem induktiven Energiespeicher beziehungsweise an dem dem induktiven Energiespeicher und dem Schalter gemeinsamen Knoten kleiner ist als das Potential an dem kapazitiven Energiespeicher, um dadurch ein Abfließen der in dem kapazitiven Energiespeicher gespeicherten Ladung zu verhindern.The control circuit preferably comprises a switch that connects between the control potential input and the Output terminal is connected and that according to the between the first and current applied or blocked at the second input terminal, dependent on the MOS transistor to be controlled by this voltage in a conducting or blocking manner. The control circuit is designed so that it then conducts the MOS transistor controls when the potential at the inductive energy storage is bigger than the potential at the capacitive energy storage, then a current from the inductive energy store to the capacitive energy store to enable. The MOS transistor is blocked by the drive circuit when the potential at the inductive energy storage or on the common to the inductive energy store and the switch Node is smaller than the potential at the capacitive energy store, to thereby drain the to prevent charge stored in the capacitive energy store.
Bei einer weiteren Ausführungsform der Erfindung ist vorgesehen, eine Schottky-Diode oder eine Zenerdiode zwischen den induktiven Energiespeicher und einen der Laststreckenan schlösse des MOS-Transistors zu schalten und den Ansteueranschluss des MOS-Transistors an den dem induktiven Energiespeicher und dem Schalter gemeinsamen Knoten zu koppeln.In another embodiment the invention provides a Schottky diode or a Zener diode between the inductive energy storage and one of the Laststreckenan circuit of the MOS transistor to switch and the drive connection of the MOS transistor to the the inductive energy store and the switch common node to couple.
Der MOS-Transistor mit floatend angeordneter Body-Zone kann dabei als selbstleitender Transistor ausgebildet sein, dessen Ansteueranschluss dann unmittelbar an den gemeinsamen Knoten des induktiven Energiespeichers und des Schalter angeschlossen ist.The MOS transistor with a floating arrangement Body zone can be designed as a self-conducting transistor be, the control connection then directly to the common Inductive energy storage node and switch connected is.
Der MOS-Transistor kann auch als selbstsperrender MOS-Transistor mit floatend angeordneter Body-Zone ausgebildet sein, wobei der Ansteueranschluss des MOS-Transistors dann vorzugsweise über einen Potentialschieber, beispielsweise eine Bootstrap-Schaltung an den gemeinsamen Knoten des induktiven Energiespeichers und des Schalters angeschlossen ist.The MOS transistor can also be used as self-blocking MOS transistor be formed with a floating body zone, the Control connection of the MOS transistor then preferably via a Potential shifters, for example a bootstrap circuit on the common node of the inductive energy store and the switch connected is.
Die Zenerdiode oder die Schottky-Diode und der MOS-Transistor können in einem gemeinsamen Halbleiterkörper integriert sein oder sie können in zwei getrennten Halbleiterkörpern integriert sein, die beispielsweise in Chip-On-Chip-Technologie miteinander verbunden sein.The Zener diode or the Schottky diode and the MOS transistor can in a common semiconductor body be integrated or they can in two separate semiconductor bodies be integrated, for example in chip-on-chip technology be connected.
Die vorliegende Erfindung wird nachfolgend in Ausführungsbeispielen anhand von Figuren näher erläutert. In den Figuren zeigtThe present invention is hereinafter described in embodiments explained in more detail with reference to figures. In shows the figures
In den Figuren bezeichnen, sofern nicht anders angegeben, gleiche Bezugszeichen gleiche Teile mit gleicher Bedeutung.Designate in the figures, if not specified otherwise, the same reference numerals have the same parts of equal importance.
Diese Gleichrichteranordnung umfasst
in dem Beispiel gemäß
In dem Ausführungsbeispiel gemäß
Zur Ansteuerung des Transistors T1
ist eine Ansteuerschaltung
Die Ansteuerschaltung
Der als pnp-Bipolartransistor ausgebildete Transistor
T21 ist mittels eines als npn-Bipolartransistor ausgebildeten Transistors
T22 angesteuert, dessen Kollektor-Emitter-Strecke über einen
Widerstand R22 an die Basis des Transistors T21 angeschlossen ist.
Die Basis des Transistors T22 ist an den Eingangsanschluss
Die Schaltungsanordnung gemäß
Sperrt der Schalter S1 anschließend und steigt
das Potential an dem Knoten N1 über
den Wert des Ausgangspotentials Uout an, so leitet der Transistor
T22, und zieht das Potential an den Basisanschluss des Transistors
T21 annäherungsweise
auf den Wert des Ausgangspotentials Uout. Dieses Ausgangspotential
Uout ist kleiner als das Ansteuerpotential U12, welches um den Wert
der über
dem Kondensator C11 anliegenden Spannung oberhalb des Potentials
U11 an dem Knoten N1 liegt. Der pnp-Transistor T21 leitet damit, und legt
den Gate-Anschluss G des MOS-Transistors T1 an das Ansteuerpotential
U12, welches größer ist
als dessen Source-Potential, so dass der MOS-Transistor T1 leitet. Sinkt das Potential
an dem Knoten N1 durch Einschalten des Schalter S1 oder durch Abkommutieren der
Spule L1 so weit ab, bis der Transistor T22 nicht mehr leitet, so
sperrt wieder der Transistor T21 und der MOS-Transistor T1 wird dadurch gesperrt,
dass dessen Gate-Ladung über
einen zwischen die Klemmen
Vorzugsweise ist zwischen den Source-Anschluss
S und den Gate-Anschluss G des MOS-Transistors T1 eine Diode D1
geschaltet, die bei ansteigendem Potential an dem Knoten N1 dafür sorgt, dass
der MOS-Transistor T1 schnell zu leiten beginnt, wobei der Transistor
T1 erst nachfolgend durch die Ansteuerschaltung
Die dargestellte Ansteuerschaltung
Der Bipolartransistor
T32 sperrt, wenn das Potential an den Knoten
The bipolar transistor T32 blocks when the potential at the node
Diese Gleichrichteranordnung mit dem MOS-Transistor T1 und der Zenerdiode Z1 funktioniert wie folgt: Übersteigt das Potential U11 an dem Knoten N1 das Ausgangspotential Uout so leitet die Zenerdiode Z1 und das Source-Potential des selbstleitenden Transistors T1 ist in etwa um den Wert der Durchlassspannung der Zenerdiode Z1 niedriger als dessen Gate-Potential, so dass auch der Transistor T1, der bereits bei Gate-Source-Spannungen von 0 V leitet, zu leiten beginnt, um die in der Spule L1 gespeicherte Energie an den Ausgangskondensator Cout zu übertragen. Übersteigt das Ausgangspotential Uout, beispielsweise bei Schließen des Schalters S1 das Potential U11 an dem Knoten N1, so bleibt der Transistor T1 zunächst leitend und die Zenerdiode Z1 verhindert einen Stromfluss von der Ausgangsklemme AK1 an den Knoten N1. Der Transistor T1 sperrt dann, wenn der Betrag der über der Zenerdiode Z1 anliegenden Sperrspannung größer wird als der Betrag der negativen Einsatzspannung des Transistors T1. Die Zenerdiode Z1 muss dabei so dimensioniert sein, dass deren Durchbruchspannung lediglich größer ist als der Betrag der negativen Einsatzspannung des Transistors T1. Der Großteil der zwischen der Ausgangsklemme AK1 und dem Knoten N1 bei leitendem Schalter S1 anliegenden Ausgangsspannung Uout wird dann durch den Transistor T1 übernommen.This rectifier arrangement with the MOS transistor T1 and the Zener diode Z1 works as follows: Exceeds the potential U11 at the node N1 conducts the output potential Uout the Zener diode Z1 and the source potential of the normally-on transistor T1 is approximately the value of the forward voltage of the Zener diode Z1 lower than its gate potential, so that the transistor T1, which is already at gate-source voltages leads from 0 V, begins to conduct, to the energy stored in the coil L1 to the output capacitor Cout transferred to. exceeds the output potential Uout, for example when the Switch S1 the potential U11 at the node N1, the transistor remains T1 first conductive and the Zener diode Z1 prevents current flow from the Output terminal AK1 at node N1. The transistor T1 then blocks, if the amount of over the reverse voltage applied to the Zener diode Z1 is greater than the amount of negative threshold voltage of the transistor T1. The Zener diode Z1 must be dimensioned so that their breakdown voltage is only larger than the amount of the negative threshold voltage of the transistor T1. The majority the between the output terminal AK1 and the node N1 when conductive Switch S1 applied output voltage is then by the Transistor T1 taken over.
Die Gleichrichteranordnung gemäß
Auch die in
Darüber hinaus kann optional, wie
dies in
Außerdem kann optional, wie dies
ebenfalls gestrichelt in
Abschließend werden anhand der
Das Halbleiterbauelement gemäß
Die Body-Zone
In nicht näher dargestellter Weise besteht auch
die Möglichkeit,
die Body-Zone hochohmig an die Source-Zone
Die Source-Zone
- 1010
- Ansteuerschaltungdrive circuit
- 10, 11010 110
- Drain-ZoneDrain region
- 100, 200100 200
- HalbleiterkörperSemiconductor body
- 11, 1311 13
- Eingängeinputs
- 1212
- AnsteuerpotentialeingangAnsteuerpotentialeingang
- 12, 11212 112
- Drift-ZoneDrift region
- 130130
- Kanalchannel
- 1414
- Ausgangoutput
- 20, 12020 120
- Body-ZoneBody zone
- 22, 12222 122
- Rekombinationszonerecombination
- 30, 13130 131
- Source-ZoneSource zone
- 32, 13232 132
- Source-ElektrodeSource electrode
- 40, 14040 140
- Gate-ElektrodeGate electrode
- 50, 15050, 150
- Isolationsschichtinsulation layer
- AK1, AK2AK1, AK2
- Ausgangsklemmenoutput terminals
- Coutcout
- Ausgangskondensatoroutput capacitor
- D1D1
- Diodediode
- D31D31
- Diodediode
- EK1, EK2EK1, EK2
- Eingangsklemmeninput terminals
- Iqiq
- Stromquellepower source
- L1L1
- SpuleKitchen sink
- N1N1
- Schaltungsknotencircuit node
- R2R2
- Widerstandresistance
- R21, R22, R23, R24R21, R22, R23, R24
- Widerständeresistors
- R31, R32R31, R32
- Widerständeresistors
- R33R33
- Widerstandresistance
- S1S1
- Schalterswitch
- T1T1
- MOS-Transistor mit floatender Body-ZoneMOS transistor with floating body zone
- T21T21
- pnp-BipolartransistorPNP bipolar transistor
- T22T22
- npn-BipolartransistorNPN bipolar transistor
- T31T31
- n-leitender MOS-Transistorn-type MOS transistor
- T32T32
- npn-BipolartransistorNPN bipolar transistor
- U11, U1, U10U11, U1, U10
- Spannungen, Potentialetensions potentials
- U12U12
- Ansteuerpotentialdrive potential
- UinUin
- Eingangsspannunginput voltage
- UoutUout
- Ausgangsspannungoutput voltage
- Z1Z1
- ZenerdiodeZener diode
- Z11Z11
- ZenerdiodeZener diode
Claims (14)
Priority Applications (1)
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DE2002127831 DE10227831A1 (en) | 2002-06-21 | 2002-06-21 | Switch converter has rectifying mos transistor with load between inductance and capacitor energy stores controlled by voltage between the two stores |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2002127831 DE10227831A1 (en) | 2002-06-21 | 2002-06-21 | Switch converter has rectifying mos transistor with load between inductance and capacitor energy stores controlled by voltage between the two stores |
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Publication Number | Publication Date |
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DE10227831A1 true DE10227831A1 (en) | 2004-01-15 |
Family
ID=29723357
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DE2002127831 Ceased DE10227831A1 (en) | 2002-06-21 | 2002-06-21 | Switch converter has rectifying mos transistor with load between inductance and capacitor energy stores controlled by voltage between the two stores |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8026704B2 (en) | 2008-06-06 | 2011-09-27 | Infineon Technologies Austria Ag | System and method for controlling a converter |
EP3255676A1 (en) * | 2016-06-09 | 2017-12-13 | ABB Schweiz AG | Vertical power semiconductor device and method for operating such a device |
EP4016644A1 (en) * | 2020-12-21 | 2022-06-22 | Hitachi Energy Switzerland AG | Power semiconductor device and method for manufacturing a power semiconductor device |
WO2022136278A2 (en) | 2020-12-21 | 2022-06-30 | Hitachi Energy Switzerland Ag | Power semiconductor device and method for manufacturing a power semiconductor device |
-
2002
- 2002-06-21 DE DE2002127831 patent/DE10227831A1/en not_active Ceased
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8026704B2 (en) | 2008-06-06 | 2011-09-27 | Infineon Technologies Austria Ag | System and method for controlling a converter |
EP3255676A1 (en) * | 2016-06-09 | 2017-12-13 | ABB Schweiz AG | Vertical power semiconductor device and method for operating such a device |
EP4016644A1 (en) * | 2020-12-21 | 2022-06-22 | Hitachi Energy Switzerland AG | Power semiconductor device and method for manufacturing a power semiconductor device |
WO2022136278A2 (en) | 2020-12-21 | 2022-06-30 | Hitachi Energy Switzerland Ag | Power semiconductor device and method for manufacturing a power semiconductor device |
DE112021006569T5 (en) | 2020-12-21 | 2023-10-05 | Hitachi Energy Switzerland Ag | POWER SEMICONDUCTOR DEVICE AND METHOD FOR PRODUCING A POWER SEMICONDUCTOR DEVICE |
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