DE102006038487A1 - Semiconductor rectifier, has two transistors, where voltage rising/falling over one transistor is applied to control electrode of other transistor for increasing voltage at latter transistor, when voltage is applied at reverse direction - Google Patents
Semiconductor rectifier, has two transistors, where voltage rising/falling over one transistor is applied to control electrode of other transistor for increasing voltage at latter transistor, when voltage is applied at reverse direction Download PDFInfo
- Publication number
- DE102006038487A1 DE102006038487A1 DE200610038487 DE102006038487A DE102006038487A1 DE 102006038487 A1 DE102006038487 A1 DE 102006038487A1 DE 200610038487 DE200610038487 DE 200610038487 DE 102006038487 A DE102006038487 A DE 102006038487A DE 102006038487 A1 DE102006038487 A1 DE 102006038487A1
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- Prior art keywords
- transistor
- voltage
- transistors
- semiconductor rectifier
- semiconductor
- Prior art date
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- 239000004065 semiconductor Substances 0.000 title claims description 29
- 230000000630 rising effect Effects 0.000 title abstract 2
- 230000005669 field effect Effects 0.000 claims description 14
- 239000008186 active pharmaceutical agent Substances 0.000 claims description 8
- 230000000295 complement effect Effects 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 claims description 2
- 230000000903 blocking effect Effects 0.000 description 11
- 230000008901 benefit Effects 0.000 description 7
- 230000001360 synchronised effect Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
Classifications
-
- 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
- H01L29/86—Types of semiconductor device ; Multistep manufacturing processes therefor controllable only by variation of the electric current supplied, or only the electric potential applied, to one or more of the electrodes carrying the current to be rectified, amplified, oscillated or switched
- H01L29/861—Diodes
- H01L29/872—Schottky diodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier
- H01L27/04—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being a semiconductor body
- H01L27/08—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being a semiconductor body including only semiconductor components of a single kind
- H01L27/0814—Diodes only
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier
- H01L27/04—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being a semiconductor body
- H01L27/08—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being a semiconductor body including only semiconductor components of a single kind
- H01L27/085—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being a semiconductor body including only semiconductor components of a single kind including field-effect components only
- H01L27/095—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being a semiconductor body including only semiconductor components of a single kind including field-effect components only the components being Schottky barrier gate field-effect transistors
-
- 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
- H01L29/86—Types of semiconductor device ; Multistep manufacturing processes therefor controllable only by variation of the electric current supplied, or only the electric potential applied, to one or more of the electrodes carrying the current to be rectified, amplified, oscillated or switched
- H01L29/861—Diodes
-
- 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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc power output without possibility of reversal 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
- H02M7/217—Conversion of ac power input into dc power output without possibility of reversal 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
Abstract
Description
Die Erfindung betrifft einen Halbleitergleichrichter.The The invention relates to a semiconductor rectifier.
Die in der Halbleitertechnik entwickelten Gleichrichterdioden haben alle schematisch eine Kennlinie nach Bild 1. In Sperrichtung fließt unvermeidlich ein möglichst niedriger Sperrstrom. In Durchlassrichtung fließt ein Strom (I), der als Funktion der Durchlassspannung (U) meistens exponentiell ansteigt. In den praktischen Einsatzfällen definiert man oft eine Schleusenspannung(Us), unterhalb derer der Strom näherungsweise als Null angesetzt wird, außerdem definiert man für den Arbeitspunkt A eine Ersatzgerade G.The have in semiconductor technology developed rectifier diodes all schematically a characteristic according to Figure 1. In reverse direction inevitably flows one possible low reverse current. In the forward direction, a current flows (I), the function the forward voltage (U) usually increases exponentially. In the practical applications Defined one often a lock voltage (Us), below which the Current approximately is set as zero, as well one defines for the working point A is a substitute straight G.
Die Schleusenspannung(Us) ist für den Einsatz der Dioden in der Leistungselektronik nachteilig, weil diese zusätzliche Verluste verursacht. Dies ist besonders kritisch, wenn die Diode in niedrigen Spannungsbereichen (z.B. 12V Batteriespannung) eingesetzt wird. Daher setzt man bei diesen Anwendungen häufig Metall-Halbleiterdioden (Schottky-Diode) ein, weil deren Schleusenspannung nur etwa halb so groß wie die von Sperrschichtdioden ist. Ein bekannter Nachteil von Schottky-Dioden ist jedoch der hohe Sperrstrom. Er reduziert den zulässigen Temperaturbereich erheblich. Es gibt Schottkydioden mit integrierten Gitterstrukturen, in denen dieser Nachteil abgemildert ist, aber trotzdem bleibt der Einsatz bei erhöhten Temperaturen eingeschränkt. Ein besonderer Vorteil der Schottkydioden ist das gute Schaltverhalten. Bipolare Dioden enthalten dagegen bei Stromfluss eine Speicherladung, die dynamische Verluste verursacht.The Slip voltage (Us) is for the use of diodes in power electronics adversely because this extra Losses caused. This is especially critical when the diode in low voltage ranges (e.g., 12V battery voltage) becomes. For this reason, metal-semiconductor diodes are frequently used in these applications (Schottky diode), because their lock voltage only about half as big as that is of barrier diodes. A known disadvantage of Schottky diodes is however the high reverse current. It reduces the permissible temperature range considerably. There are Schottky diodes with integrated lattice structures, in which this disadvantage is mitigated, but still remains Use at elevated Temperatures are limited. A particular advantage of the Schottky diodes is the good switching behavior. In contrast, bipolar diodes contain a storage charge when there is a current flow, which causes dynamic losses.
Es gibt Sychrongleichrichter, bei denen die Schleusenspannung vermieden wird und deren Sperrverhalten demjenigen einer Sperrschicht-Diode entspricht. Auch diese Gleichrichter enthalten keine Speicherladung.It There are synchronous rectifiers in which the lock voltage is avoided and whose blocking behavior corresponds to that of a junction diode. These rectifiers contain no storage charge.
In Bild 2 ist die Funktion dieser Gleichrichter dargestellt. Sie sind Leistungs-MOSFETs, die im dritten Quadranten (QIII) betrieben werden, also mit positiv gepoltem Source-Kontakt und negativem Drain-Kontakt als Durchlass-Richtung. Ohne Ansteuersignal (Gate positiv) haben sie wesentlich verbesserte Durchlass-Eigenschaften. Die Nachteile dieser Technik sind jedoch:
- – Es ist eine Ansteuerschaltung mit Hilfsenergie-Versorgung notwendig.
- – Der Einsatz ist nur möglich wenn der Eintritt in den Sperrzustand bekannt ist, weil die Gate-Ansteuerung vor diesem Eintritt den Sperrzustand bestellen muss. Ein zu frühes Abschalten des Gatesignals würde das Bauelement in einen Zustand mit erhöhter Speicherladung bringen. Dies verursacht erhebliche Schaltverluste, weil die Diode jetzt ein bipolares Bauelement ist. Daher sind Synchrongleichrichter nur für Anwendungen geeignet, die eine präzise Synchronsteuerung zulassen.
- - It is a drive circuit with auxiliary power supply necessary.
- - The use is only possible if the entry into the blocking state is known, because the gate control must order the blocking state before this entry. Turning off the gate signal too early would place the device in a state of increased storage charge. This causes significant switching losses because the diode is now a bipolar device. Therefore, synchronous rectifiers are only suitable for applications that allow precise synchronous control.
Der vorliegenden Erfindung liegt die Aufgabe zugrunde, eine speicherladungsfreie, also unipolare Diode zu schaffen, deren Schleusenspannung sehr gering ist oder vollständig verschwindet, und die keine externe synchrone Ansteuerung oder Hilfsenergie benötigt.Of the present invention has for its object to provide a non-charge, So to create a unipolar diode whose slip voltage is very low is or completely disappears, and does not require external synchronous drive or auxiliary power.
Die Aufgabe wird durch die im Anspruch 1 angegebenen Merkmale gelöst. Weitergehende vorteilhafte Ausgestaltungen finden sich in den weiteren Ansprüchen.The The object is achieved by the features specified in claim 1. further advantageous embodiments can be found in the other claims.
Im folgenden wird die Erfindung anhand von in der Zeichnung dargestellten Ausführungsbeispielen naher her erläutert, es zeigen:in the Following is the invention with reference to shown in the drawing embodiments explained in more detail, show it:
Die
Der
Transistor
Die
Source-Elektroden
Die
Schaltung hat die Funktion einer Diode, wobei der Anschluss
Bei positiver Polung
der Anode zur Kathode sind beide Kanalbereiche leitend. Die Durchlassspannung des
Transistors
With positive polarity of the anode to the cathode, both channel regions are conductive. The forward voltage of the transistor
Wenn
eine Spannung in entgegen gesetzter Richtung angelegt wird, fließt ein Rückstrom,
dessen Durchlassspannung im Transistor
Erst
bei Überschreitung
einer kritischen Spannung erfolgt ein Durchbruch des Elements durch
Stoßionisation
oder Source-Drain-Durchgriff. Die Kennlinie ist schematisch in
Es
ist möglich,
die Feldeffekt-Transistoren als normal-leitende MOS-Transistoren
auszuführen. Dies
ist in
Komplementär aufgebaut
ist der normal-leitende MOS-Feldeffektor
In
der
In
Für Transistoren
mit höherer
Sperrfähigkeit ist
es günstig,
einen zusätzlichen
normal-leitenden Transistor vorzusehen, der in der Funktion einer
Kaskodenschaltung gemäß den
In Sperrrichtung haben alle diese Schaltungen die Eigenschaft, bei kleinen Sperrspannungen einen Rückstrom zuzulassen; bei höheren Sperrspannungen wird dieser auf sehr kleine Werte reduziert. Bei hohen Temperaturen ist der Sperrstrom zwar relativ stark erhöht, jedoch immer noch wesentlich niedriger als derjenige von Schottkydioden und MPS Gleichrichter. Das gefürchtete "thermische Weglaufen" durch Selbstaufheizung wird dadurch weitgehend verhindert.In Reverse direction, all of these circuits have the property at small reverse voltages a reverse current permit; at higher Blocking voltages are reduced to very low values. at high temperatures, the reverse current is indeed relatively high, however still much lower than that of Schottky diodes and MPS rectifier. The dreaded "thermal runaway" by self-heating is thereby largely prevented.
Wenn
der bei 1V auftretende Rückstrom nicht
zulässig
ist und wenn es wesentlich auf gute Sperrcharakteristik ankommt,
kann die hier vorgeschlagene Schaltung mit einer Metall-Halbleiter-Diode
kombiniert werden. Die Schaltungen sind in
Weitere
Versionen der erfindungsgemäßen Bauelemente
sind in
Das Bauelement kann in monolithisch integrierter Weise, aber auch ab schaltungstechnische Kombination von Bauelementen eingesetzt werden.The Component can be monolithically integrated way, but also from circuit combination of components are used.
Der Vorteil, keine Schleusenspannung zu benötigen, ist insbesondere bei Halbleitern mit großem Bandabstand, z.B. SiC oder GaN, von Vorteil.Of the The advantage of not needing a lock-up tension is particularly evident Semiconductors with large Band gap, e.g. SiC or GaN, an advantage.
In diesen Materialen können mit besonderem Vorteil auch Metall-Halbleiter-Transistoren (MESFETs) anstelle der Sperrschicht-Feldeffekt-Transistoren eingesetzt werden.In these materials can with particular advantage also metal-semiconductor transistors (MESFETs) be used in place of the junction field effect transistors.
Claims (18)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200610038487 DE102006038487A1 (en) | 2006-08-16 | 2006-08-16 | Semiconductor rectifier, has two transistors, where voltage rising/falling over one transistor is applied to control electrode of other transistor for increasing voltage at latter transistor, when voltage is applied at reverse direction |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200610038487 DE102006038487A1 (en) | 2006-08-16 | 2006-08-16 | Semiconductor rectifier, has two transistors, where voltage rising/falling over one transistor is applied to control electrode of other transistor for increasing voltage at latter transistor, when voltage is applied at reverse direction |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102006038487A1 true DE102006038487A1 (en) | 2008-02-21 |
Family
ID=38954826
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200610038487 Withdrawn DE102006038487A1 (en) | 2006-08-16 | 2006-08-16 | Semiconductor rectifier, has two transistors, where voltage rising/falling over one transistor is applied to control electrode of other transistor for increasing voltage at latter transistor, when voltage is applied at reverse direction |
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DE (1) | DE102006038487A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2384518A2 (en) * | 2009-01-06 | 2011-11-09 | STMicroelectronics N.V. | Self-bootstrapping field effect diode structures and methods |
-
2006
- 2006-08-16 DE DE200610038487 patent/DE102006038487A1/en not_active Withdrawn
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9029921B2 (en) | 2007-09-26 | 2015-05-12 | Stmicroelectronics International N.V. | Self-bootstrapping field effect diode structures and methods |
EP2384518A2 (en) * | 2009-01-06 | 2011-11-09 | STMicroelectronics N.V. | Self-bootstrapping field effect diode structures and methods |
EP2384518A4 (en) * | 2009-01-06 | 2014-01-22 | St Microelectronics Nv | Self-bootstrapping field effect diode structures and methods |
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Date | Code | Title | Description |
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OP8 | Request for examination as to paragraph 44 patent law | ||
R016 | Response to examination communication | ||
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |
Effective date: 20120301 |