EP0795808B1 - Geregelte Versorgungsspannungsquelle - Google Patents
Geregelte Versorgungsspannungsquelle Download PDFInfo
- Publication number
- EP0795808B1 EP0795808B1 EP97200692A EP97200692A EP0795808B1 EP 0795808 B1 EP0795808 B1 EP 0795808B1 EP 97200692 A EP97200692 A EP 97200692A EP 97200692 A EP97200692 A EP 97200692A EP 0795808 B1 EP0795808 B1 EP 0795808B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- current
- emitter
- value input
- input
- transistor
- 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.)
- Expired - Lifetime
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Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F3/00—Non-retroactive systems for regulating electric variables by using an uncontrolled element, or an uncontrolled combination of elements, such element or such combination having self-regulating properties
- G05F3/02—Regulating voltage or current
- G05F3/08—Regulating voltage or current wherein the variable is dc
- G05F3/10—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics
- G05F3/16—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices
- G05F3/20—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices using diode- transistor combinations
- G05F3/26—Current mirrors
- G05F3/265—Current mirrors using bipolar transistors only
Definitions
- the invention relates to a regulated supply voltage source containing a parallel controller with a controllable semiconductor component, the Load path between output connections of the supply voltage source is arranged and its control input with an output of a control device is connected, the control device having a reference input for feeding a reference voltage.
- DE-OS 42 31 571 is an integrable shunt controller with a controllable Known semiconductor device, the load path between the poles of a supply voltage source is switched and its control input with the output is connected to a control device and to a reference voltage source the reference input of the control device is connected.
- the stability this regulator especially when connected to a supply voltage source with complex internal resistance should be increased in that a transistor is operated in the control device at the saturation limit.
- a voltage regulator which is a series regulator which is operated by a parallel controller.
- the series controller includes a parallel arrangement of four bipolar PNP transistors, each with a double Collector connection. All emitter connections of these transistors are with the positive pole connected to a supply voltage source, all basic connections and one Collector connection of one of the transistors are connected to one another Collector connection of a control transistor connected, and all others Collector connections are with an output connection of the voltage regulator Delivery of a regulated current connected. Between this output connection of the parallel regulator and the negative pole of the supply voltage source is the Parallel controller inserted. This has an output transistor, the emitter with the negative pole of the supply voltage source and its collector via one Current measuring transistor of the parallel regulator with the output terminal of the Voltage regulator is connected.
- the parallel controller has an error measuring amplifier consisting of two emitter-coupled NPN transistors whose emitters are connected via a resistor the negative pole of the supply voltage source and its collectors via one Current mirrors are connected to the output terminal of the voltage regulator. From one of the collector connections of the error measuring amplifier is connected via a Transistor stage controlled by the parallel regulator output transistor. Via a transistor and resistor network will have a defined reference voltage of 18 mV for the Error measuring amplifier generated.
- the invention has the task of a regulated supply voltage source type mentioned above to create a parallel controller to regulate high supply voltages is set up and when switched on, i.e. of the Commissioning or the activation of the control device, only a very needs a short period of time to reach its linear working range.
- control device a from a current bank with at least one constant current source fed control amplifier the voltage between the output connections at an actual value input the supply voltage source and at a setpoint input Reference voltage is supplied from the reference input of the control device that an output of the control amplifier forms the output of the control device and that the control device comprises a bias current stage which, depending on the Difference of the voltages at the actual value input and at the setpoint input of the control amplifier this feeds a bias current that is at least partially via the output the control device is fed to the control input of the semiconductor component.
- the power bank represents a circuit arrangement, of which usually several direct currents can be emitted, which stabilize each other simultaneously are and are therefore preferably in a constant relationship to each other.
- a power bank at least one Constant current source comprises, all constant current sources of the power bank be stabilized together.
- An advantageous embodiment of such Strombank is in shape with semiconductor devices, especially transistors a current mirror with an input and preferably a plurality of outputs. Due to the fixed proportionality between those at the outputs Delivered, fixed set direct currents can also more extensive circuit arrangements, that require multiple DC sources, precisely fed become.
- the invention enables a significantly accelerated settling of the regulated Supply voltage source during commissioning by the of the Pre-current stage supplied pre-current reached by the reloading processes at Settling can be accelerated significantly.
- the supply voltage source according to the invention is ready for use in a very short time after switching on.
- the bias current stage preferably supplies the bias current when the voltage at Actual value input that at the setpoint input by a predetermined difference exceeds.
- the parallel regulator that covered the load range of the one it had Semiconductor component between the output terminals of the supply voltage source is arranged, causes at these output connections in operation a supply voltage that is lower than the voltage between the Output connections of the supply voltage source, if one Power is supplied to these output connections, the parallel regulator itself but is not in operation. Therefore, for the operation of the parallel controller Voltage at the setpoint input of the control amplifier (setpoint) less than that Voltage at the actual value input (actual value), which changes when the Parallel controller results. The voltage at the actual value input is therefore used during commissioning initially be greater than the voltage at the setpoint input.
- the regulated supply voltage source is the pre-current stage from one of the constant current sources of the power bank fed.
- a defined bias current can be set, which leads to leads to increased stability with respect to the tendency of the control device to oscillate.
- the bias current always flows when the voltage at Actual value input that at the setpoint input by the specified difference exceeds, if the bias current is therefore always inactive Parallel regulator flows, the current bank is also supplied with the bias current, if the remaining parts of the control device, in particular the control amplifier, are ineffective and therefore do not take any electricity from the power bank.
- the supply voltage source according to the invention is advantageously designed such that that the control amplifier is an emitter coupled from at least one of the constant current sources the current bank has a pair of transistors fed, one of which is controlled by the actual value input and its other by the setpoint input, and a current combining stage, through which the sum of the transistors led currents is fed to the output of the control device.
- each of the transistors of the emitter-coupled Pair an emitter follower stage fed by one of the constant current sources of the current bank, via which the actual value input and the setpoint input with those of them controlled transistors of the emitter-coupled pair are connected, and includes furthermore the bias current stage a diode arrangement which in the flow direction of the Constant current source of the emitter follower stage connected to the actual value input the emitter of that of the transistors of the emitter-coupled pair is guided, which is controlled by the setpoint input.
- This configuration makes a very receive simple and reliable pre-current stage at which the specified Difference between the voltages at the actual value input and the setpoint input, if it is exceeded, the bias current flows through one or more Diode flux voltages is determined.
- the figure shows an embodiment of the regulated supply voltage source according to the invention.
- This includes a parallel controller that is controllable Has semiconductor component, which as a Darlington circuit made of two npn transistors 1, 2 is constructed.
- a resistor 3 connects the emitters of the transistors 1 and 2 of the Darlington circuit. This is with your load distance between a first output terminal 4 and a second output terminal 5 are arranged.
- the output connections 4, 5 the by the Tapped supply voltage to be stabilized in parallel.
- From the first Output terminal 4 is a capacitor 6 from the second output terminal 5 RC element 7 led to ground 8.
- the first output terminal 4 is over the load path of a first current source transistor 9 connected to a common supply voltage line 10.
- the Supply voltage line 10 can be with a battery or a power supply or the like to be connected for supplying electrical energy.
- the one on the supply voltage line 10 applied voltage need not be stabilized.
- the supply voltage source has a control device a control amplifier.
- This control amplifier comprises an emitter-coupled one Pair of pnp transistors 11, 12, the coupling of the emitters via a Resistor 13 takes place.
- the emitters of the pnp transistors 11 and 12 are via one second or a third current source transistor 14 or 15 with the supply voltage line 10 connected.
- the current source transistors 14, 15 are components a current bank, which also has a fourth and a fifth current source transistor 16 and 17 and a control transistor 18 includes. All current source transistors 14 to 17 and the control transistor 18 are as pnp transistors formed, whose emitter with the supply voltage line 10 and their bases are interconnected.
- the interconnected bases are with the collector of the control transistor 18 and with a connection of a resistor 19 connected, which is also part of the electricity bank and with his second terminal is connected to ground 8.
- Current source transistors 14 to 17 can be connected to the current bank Current source transistors 20, 21 include those in another, through a Dashed line symbolized circuitry 22 for the delivery of Constant currents serve in a fixed correlation to those of the current source transistors 14 to 17 delivered direct currents.
- the first current source transistor 9 is not from the current bank 14 to 21, but has its own control transistor 23 and its own resistor 24 connected to ground 8.
- the control transistor 23 by connecting its base and its collector as Diode connected, the bases of the first current source transistor 9 and the control transistor 23 are connected together, and the series connection between the formed as a pnp type, connected as a diode control transistor 23 and the Resistor 24 connects the supply voltage line 10 to ground 8.
- the control transistor 23 can be modified from the illustrated exemplary embodiment and the resistor 24 saved and the base of the first current source transistor 9 be connected to the base of the control transistor 18, so that the first Current source transistor 9 is part of the current bank.
- the control amplifier is emitter-coupled at the base of the first pnp transistor 11 Pair of a reference input 25, which in the present embodiment is identical to the setpoint input, a reference voltage for the setting of the actual value of the voltage at the first output terminal 4 is supplied.
- the reference input 25 is connected to the base via an input resistor 26 a pnp transistor 27 forming a first emitter follower stage, the Emitter with the base of the first pnp transistor 11 of the emitter-coupled pair of the control amplifier and the collector of the fourth current source transistor 16 Electricity bank is connected.
- the first emitter follower stage 27 of the fourth current source transistor 16 which is one of the constant current sources of the current bank forms, fed.
- the collector of the pnp transistor forming the first emitter follower stage 27 is connected to ground 8.
- a pnp transistor 28 forms one second emitter follower stage.
- the transistor 28 forming the second emitter follower stage is with its emitter to the collector of the fifth current source transistor 17 and the base of the second pnp transistor 12 of the emitter-coupled pair of the control amplifier connected.
- the collector of transistor 28 is also included Ground 8 connected.
- the base of transistor 28 is via an associated one Input resistor 29 connected to the first output terminal 4.
- the second emitter follower stage 28 is also fed from the power bank; it (and the input resistor 29) the actual value of the voltage on Output terminal 4 to the second transistor 12 of the emitter-coupled pair headed.
- the control amplifier also contains a current combination stage, through which the currents supplied by the transistors 11, 12 of the emitter-coupled pair an output current can be linked, which is the base of the NPN transistor 1 Darlington circuit, i.e. the control input of the semiconductor device Parallel regulator, is supplied.
- This current combination stage includes one Current mirror made of two npn transistors 31, 32, their bases with each other and their Emitters are connected to ground 8.
- the collector of the first NPN transistor 31 of the current mirror is coupled to the collector of the second pnp transistor 12 of the emitter Pair of the control amplifier connected. Through a connection between the base and the collector is the first NPN transistor 31 of the current mirror as whose input is switched.
- the collector of the second npn transistor 32 of the Current mirror forms its output and is with the collector of the first pnp transistor 11 of the emitter-coupled pair connected.
- an output resistor 33 is also connected via which the current combination stage connected to the base of transistor 1 in the manner mentioned is.
- the parallel controller of the circuit arrangement shown can by a switching transistor 34 switched off, i.e. be brought into an ineffective state, in which the semiconductor device from the transistors 1, 2 regardless of the Voltage at actual value input 30 remains blocked.
- the switching transistor 34 becomes a switching voltage via a switching input 35 fed.
- the switching input 35 is connected to the base of the switching transistor 34.
- the switching voltage converts the switching transistor 34 into its conductive one Status.
- the current in the output resistor 33 immediately follows Ground 8 derived, the Darlington circuit remains locked.
- About the first Current source transistor 9 then turns on the first output terminal 4 Voltage applied to the supply voltage line 10.
- the Supply of the switching voltage at switching input 35 interrupted or there one low switching voltage applied (i.e. switching input 35 connected to ground 8), blocks the switching transistor 34, and the parallel regulator is according to the figure effective.
- the capacitor 36 there is also between the actual value input 30 and the connection between the output resistor 33, the base of the transistor 1 and the collector of the switching transistor 34, a capacitor 36 inserted, the one Stabilization of the collector-base voltage of transistor 1 of the Darlington circuit causes.
- the capacitor 36 generates positive feedback of the Actual value input 30 when switching the parallel regulator through switching transistor 34, whereby the switching operations in the effective or ineffective state of the Parallel controller should be accelerated.
- the dimensioning of the Capacitor 36 in particular with an integrated structure of the parallel regulator a semiconductor body set a narrow limit, and the each time the Switching voltage at switching input 35 following charge of capacitor 36 the current source transistors of the current bank - and also the first current source transistor 9 - takes due to the specified currents of these current source transistors a disproportionate amount of time.
- the pre-current stage 37 consists of a diode-connected circuit npn transistor, whose collector (and base) with the collector of the fifth current source transistor 17 and its emitter with the emitter of the first pnp transistor 11 of the emitter-coupled pair is connected.
- the pre-current stage 37 forms thus a diode arrangement which flows in the direction of flow from the constant current source 17th the emitter follower stage 28 connected to the actual value input 30 to the emitter of the transistor 11 controlled by the setpoint input 25 of the emitter-coupled Couple is led.
- the bias current stage 37 becomes conductive when the collector of the fifth current source transistor 17 a double the base-emitter forward voltage of a transistor carries higher voltage than the collector of the fourth current source transistor 16, or in other words: the voltage at the base of the from the actual value input 30 controlled transistor 12 is twice the forward voltage higher than the voltage at the base of the transistor controlled by setpoint input 25 11. Since the emitter follower stages 27, 28 of the associated current source transistors 16, 17 still fed with direct currents the voltage difference described is also between the actual value input 30 and the setpoint input 25. If this is exceeded by the Interpretation of the pre-current stage 37 predeterminable difference - it can be connected in series several transistors connected as diodes can be varied - begins the bias current to flow through the bias current stage 37.
- the switching transistor 34 In the inactive state of the parallel regulator, in which the switching transistor 34 is conductive is the bias current from the bias current stage 37 via the first pnp transistor 11, the output resistor 33 and the switching transistor 34 derived to ground 8. He thus has on the one hand no influence on the control of the Darlington circuit 1, 2; on the other hand, there is also the pnp transistor 27 of the first emitter follower stage is still conductive, a fixed coupling between the voltages at the collector of the fifth current source transistor 17 on the one hand and at the reference input (setpoint input) 25 on the other hand. The voltage at the collector of the fifth current source transistor 17 is clamped to a value which is three times the The forward voltage of the transistors is higher than the reference voltage at the reference input 25.
- the parallel regulator is functional to the extent that of the other current source transistors 20, 21 emitted direct currents by switching the parallel regulator not be influenced.
- the bias current stage 37 acts in the same way via the Base-emitter path of the second pnp transistor 12 also saturation of the third current source transistor 15 counter, whose collector in a corresponding Is clamped to a value that is a maximum of four times the flow voltage of the transistors is higher than the reference voltage.
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Automation & Control Theory (AREA)
- Continuous-Control Power Sources That Use Transistors (AREA)
- Amplifiers (AREA)
- Control Of Electrical Variables (AREA)
Description
Claims (6)
- Geregelte Versorgungsspannungsquelle, enthaltend einen Parallelregler mit einem steuerbaren Halbleiterbauelement (1, 2), dessen Laststrecke zwischen Ausgangsanschlüssen (4, 5) der Versorgungsspannungsquelle angeordnet ist und dessen Steuereingang mit einem Ausgang (über 33) einer Steuereinrichtung verbunden ist, wobei die Steuereinrichtung einen Referenzeingang (25) zum Zuführen einer Referenzspannung aufweist, dadurch gekennzeichnet,
daß die Steuereinrichtung einen aus einer Strombank (14 bis 18) mit wenigstens einer Konstantstromquelle gespeisten Regelverstärker (11, 12, 13) aufweist, dem an einem Istwerteingang (30) die Spannung zwischen den Ausgangsanschlüssen (4, 5) der Versorgungsspannungsquelle und an einem Sollwerteingang (25) die Referenzspannung vom Referenzeingang (25) der Steuereinrichtung zugeführt wird, daß ein Ausgang des Regelverstärkers (11, 12, 13) den Ausgang der Steuereinrichtung bildet und daß die Steuereinrichtung eine Vorstromstufe (37) umfaßt, die in Abhängigkeit von der Differenz der Spannungen am Istwerteingang (30) und am Sollwerteingang (25) des Regelverstärkers (11, 12, 13) diesem einen Vorstrom zuführt, der wenigstens teilweise über den Ausgang der Steuereinrichtung dem Steuereingang des Halbleiterbauelements zugeführt wird. - Geregelte Versorgungsspannungsquelle nach Anspruch 1, dadurch gekennzeichnet,
daß die Vorstromstufe (über 33) den Vorstrom liefert, wenn die Spannung am Istwerteingang (30) diejenige am Sollwerteingang (25) um einen vorgegebenen Differenzbetrag übersteigt. - Geregelte Versorgungsspannungsquelle nach Anspruch 1 oder 2, dadurch gekennzeichnet,
daß die Vorstromstufe (über 33) aus einer der Konstantstromquellen der Strombank (25) gespeist wird. - Geregelte Versorgungsspannungsquelle nach Anspruch 1, 2 oder 3, dadurch gekennzeichnet,
daß der Regelverstärker (11, 12, 13) ein emittergekoppeltes von wenigstens einer der Konstantstromquellen der Strombank (25) gespeistes Paar von Transistoren (11, 12) aufweist, deren einer (12) vom Istwerteingang (30) und deren anderer (11) vom Sollwerteingang (25) gesteuert wird, sowie eine Stromverknüpfungsstufe (31, 32), durch die die Summe der von den Transistoren (11, 12) geführten Ströme dem Ausgang (über 33) der Steuereinrichtung zugeführt wird. - Geregelte Versorgungsspannungsquelle nach Anspruch 4, dadurch gekennzeichnet,
daß der Regelverstärker zu jedem der Transistoren (11, 12) des emittergekoppelten Paares eine von je einer der Konstantstromquellen der Strombank (25) gespeiste Emitterfolgerstufe (27, 28) umfaßt, über die der Istwerteingang (30) und der Sollwerteingang (25) mit den von ihnen gesteuerten Transistoren (11, 12) des emittergekoppelten Paares verbunden sind, und daß die Vorstromstufe (über 33) eine Diodenanordnung umfaßt, die in Flußrichtung von der Konstantstromquelle (17) der mit dem Istwerteingang (30) verbundenen Emitterfolgerstufe (28) an den Emitter desjenigen (11) der Transistoren (11, 12) des emittergekoppelten Paares geführt ist, der vom Sollwerteingang (25) gesteuert wird. - Geregelte Versorgungsspannungsquelle nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet,
daß die Strombank (25) weitere Konstantstromquellen (20, 21) umfaßt zum Speisen weiterer Baugruppen, insbesondere weiterer Steuereinrichtungen (22) für weitere geregelte Versorgungsspannunsquellen.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19609971 | 1996-03-14 | ||
DE19609971A DE19609971A1 (de) | 1996-03-14 | 1996-03-14 | Geregelte Versorgungsspannungsquelle |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0795808A1 EP0795808A1 (de) | 1997-09-17 |
EP0795808B1 true EP0795808B1 (de) | 1999-12-22 |
Family
ID=7788230
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97200692A Expired - Lifetime EP0795808B1 (de) | 1996-03-14 | 1997-03-07 | Geregelte Versorgungsspannungsquelle |
Country Status (4)
Country | Link |
---|---|
US (1) | US5764042A (de) |
EP (1) | EP0795808B1 (de) |
JP (1) | JPH1039940A (de) |
DE (2) | DE19609971A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3068482B2 (ja) * | 1997-01-30 | 2000-07-24 | 日本電気アイシーマイコンシステム株式会社 | 定電圧回路 |
DE69919674D1 (de) * | 1999-01-21 | 2004-09-30 | St Microelectronics Srl | Vollintegrierter linearer Regler mit einer Darlington bipolaren Ausgangstufe |
JP4122910B2 (ja) * | 2002-09-24 | 2008-07-23 | ミツミ電機株式会社 | 電源供給回路 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4352056A (en) * | 1980-12-24 | 1982-09-28 | Motorola, Inc. | Solid-state voltage reference providing a regulated voltage having a high magnitude |
DE3225157A1 (de) * | 1982-07-06 | 1984-01-12 | Robert Bosch Gmbh, 7000 Stuttgart | Regelvorrichtung fuer ein elektrisches stellglied |
US4743833A (en) * | 1987-04-03 | 1988-05-10 | Cross Technology, Inc. | Voltage regulator |
GB2226664B (en) * | 1988-11-26 | 1992-09-09 | Motorola Inc | Shunt regulators |
DE4231571B4 (de) * | 1992-09-21 | 2007-09-13 | Infineon Technologies Ag | Integrierbarer Shunt-Regler |
-
1996
- 1996-03-14 DE DE19609971A patent/DE19609971A1/de not_active Withdrawn
-
1997
- 1997-03-07 EP EP97200692A patent/EP0795808B1/de not_active Expired - Lifetime
- 1997-03-07 DE DE59700869T patent/DE59700869D1/de not_active Expired - Fee Related
- 1997-03-13 US US08/818,139 patent/US5764042A/en not_active Expired - Fee Related
- 1997-03-13 JP JP9059188A patent/JPH1039940A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
US5764042A (en) | 1998-06-09 |
EP0795808A1 (de) | 1997-09-17 |
DE19609971A1 (de) | 1997-09-18 |
JPH1039940A (ja) | 1998-02-13 |
DE59700869D1 (de) | 2000-01-27 |
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