DE2447850C2 - Circuit arrangement for keeping the output voltage of a DC voltage converter constant - Google Patents

Circuit arrangement for keeping the output voltage of a DC voltage converter constant

Info

Publication number
DE2447850C2
DE2447850C2 DE19742447850 DE2447850A DE2447850C2 DE 2447850 C2 DE2447850 C2 DE 2447850C2 DE 19742447850 DE19742447850 DE 19742447850 DE 2447850 A DE2447850 A DE 2447850A DE 2447850 C2 DE2447850 C2 DE 2447850C2
Authority
DE
Germany
Prior art keywords
voltage
gate
input
converter
circuit arrangement
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
Application number
DE19742447850
Other languages
German (de)
Other versions
DE2447850A1 (en
Inventor
Joel Dr.-Ing. 7150 Backnang Korn
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bosch Telecom GmbH
Original Assignee
ANT Nachrichtentechnik GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ANT Nachrichtentechnik GmbH filed Critical ANT Nachrichtentechnik GmbH
Priority to DE19742447850 priority Critical patent/DE2447850C2/en
Publication of DE2447850A1 publication Critical patent/DE2447850A1/en
Application granted granted Critical
Publication of DE2447850C2 publication Critical patent/DE2447850C2/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F5/00—Systems for regulating electric variables by detecting deviations in the electric input to the system and thereby controlling a device within the system to obtain a regulated output

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Power Engineering (AREA)
  • Dc-Dc Converters (AREA)

Description

3030th

Die Erfindung betrifft eine Schaltungsanordnung nach dem Oberbegriff des Patentanspruchs.The invention relates to a circuit arrangement according to the preamble of claim.

Eine solche Schaltungsanordnung ist aus der DE-OS 19 36 924 bekanntSuch a circuit arrangement is known from DE-OS 19 36 924

Die dort durch eine diskrete Transistorschaltung reaiisierte Anordnung ist relativ aufwendig.Which there was realized by a discrete transistor circuit Arrangement is relatively complex.

Aus dem Buch »Halbleiter-Schaltungstechnik« von U.Tietze und Ch. Schenk, 2. Auflage, 1971, Springer-Verlag, S. 449, 450 oder aus »Application note ICAN-6267, astable and monostable oscillators using RCA CO-SIMOS digital integratend circuits«, 1970, β. 4—7 ist es an sich bekannt, einen monostabilen Multivibrator aus zwei logischen Gattern aufzubauen, wobei das erste Gatter als Inverter und das zweite Gatter als NOR-Gatter geschaltet ist und der Kondensator des /?C-Gliedes zwischen dem Eingang des ersten Gatters und dem Ausgang des zweiten Gatters und der Widerstand zwischen dem Eingang des ersten Gatters und einem konstanten Potential liegt.From the book "Semiconductor Circuit Technology" by U.Tietze and Ch. Schenk, 2nd edition, 1971, Springer-Verlag, Pp. 449, 450 or from »Application note ICAN-6267, astable and monostable oscillators using RCA CO-SIMOS digital integrating circuits «, 1970, β. It is 4-7 known per se to build a monostable multivibrator from two logic gates, the first Gate is connected as an inverter and the second gate is connected as a NOR gate and the capacitor of the /? C element between the input of the first gate and the output of the second gate and the resistor between the input of the first gate and a constant potential.

Ausgehend vom Stand der Technik nach der DE-OS 19 36 924 liegt dem Anmeldungsgegenstand die Aufgabe zugrunde, mit einfachen Mitteln dieselbe Wirkung zu erzielen.Based on the prior art according to DE-OS 19 36 924, the subject of the application is the task to achieve the same effect with simple means.

Diese Aufgabe wird mit den kennzeichnenden Merkmalen des Gegenstandes des Patentanspruchs gelöst.This object is achieved with the characterizing features of the subject matter of the claim.

Hierbei kommt die eingangs geschilderte an sich bekannte aus zwei logischen Gattern aufgebaute Multivibratorschaltung zur Anwendung. Bei dieser Schaltung besteht jedoch kein linearer Zusammenhang zwischen der Umladespannung am Kondensator des ÄC-GIiedes und der Impulsdauer.This is where the multivibrator circuit described at the outset, known per se and composed of two logic gates, comes into play to use. In this circuit, however, there is no linear relationship between the charge reversal voltage at the capacitor of the ÄC-member and the pulse duration.

Um die Impulsdauer der Multivibrator so zu bestimmen, daß die Wirkung von Schwankungen der Eingangsspannung auf die Ausgangsspannung des Gleichspannungswandlers kompensiert wird, muß die Umladespannung dem GesetzTo determine the pulse duration of the multivibrator so that the effect of fluctuations in the input voltage is compensated to the output voltage of the DC voltage converter, the charge reversal voltage the law

UL= Ki + K2(UB -Ki)UL = Ki + K2 (UB -Ki)

folgen, wobei K1 ein konstanter Spannungsanteil, K 2 ein Faktor und UB die Eingangsspannung sind.follow, where K 1 is a constant voltage component, K 2 is a factor and UB is the input voltage.

Wird die Betriebsspannung für den Taktgeber und den monostabilen Multivibrator mittels Vonviderstand und stabilisierender Zenerdiode aus der Eingangsspannung gewonnen, so kann man diese Betriebsspannung als K 1 und den Faktor K 2 mittels eines Spannungsteilers realisieren.If the operating voltage for the clock generator and the monostable multivibrator is obtained from the input voltage by means of a resistor and a stabilizing Zener diode, this operating voltage can be implemented as K 1 and the factor K 2 by means of a voltage divider.

Ein Ausführungsbeispiel der Anordnung nach der Erfindung zeigt die Figur. Darin ist UB die Eingangsspannung, TG der Taktgeber, G 1 und G 2 zwei integrierte Gatter des monostabilen Multivibrators, R 1 und C das ÄC-Glied des monostabilen Multivibrators, R 2 der Vorwiderstand und D die Zenerdiode zur Gewinnung der Betriebsspannung des Taktgebers und des monostabilen Multivibrators aus der Eingangsspannung, R 3 und R 4 der Spannungsteiler zur Anpassung an die Umladespannung UL und der Wandler W. The figure shows an embodiment of the arrangement according to the invention. UB is the input voltage, TG is the clock, G 1 and G 2 are two integrated gates of the monostable multivibrator, R 1 and C are the ÄC element of the monostable multivibrator, R 2 is the series resistor and D is the Zener diode for generating the operating voltage of the clock and the monostable multivibrator from the input voltage, R 3 and R 4 the voltage divider for adaptation to the recharging voltage UL and the converter W.

Die Wirkungsweise der Anordnung ist folgende: das Gatter G 2 erhält an seinem Eingang aus dem Taktgeber Anregungsimpulse und kippt bei jedem Taktimpuls in seine aktive Lage. Die Dauer seiner Ausgangsimpulse wird durch das RC-Glied R i und C und die am Widerstand R 1 anliegende Umladespannung UL bestimmt Die Zenerspannung stellt den Wert K 1 und das Verhältnis R 4/(R 3 + R 4) den Wert K 2 dar. Der Ausgang des Gatters G i des monostabilen Multivibrators steuert den Wandler W derart, daß für die Dauer seiner Ausgangsimpulse der nicht dargestellte Stelltransistor des Wandlers Umleitend gemacht wird.The mode of operation of the arrangement is as follows: the gate G 2 receives excitation pulses from the clock generator at its input and switches to its active position with each clock pulse. The duration of its output pulses is determined by the RC element R i and C and the recharging voltage UL applied to the resistor R 1. The Zener voltage represents the value K 1 and the ratio R 4 / (R 3 + R 4) represents the value K 2 . The output of the gate G i of the monostable multivibrator controls the converter W in such a way that the converter transistor (not shown) is diverted for the duration of its output pulses.

Hierzu 1 Blatt Zeichnungen1 sheet of drawings

Claims (1)

Patentanspruch:Claim: Schaltungsanordnung zum Konstanthalten der Ausgangsspannung eines Gleichspannungswandlers bei konstanter Last mit einem Zerhacker, wobei der Gleichspannungswandler von einem monostabilen Multivibrator gesteuert wird, der von einem Taktgeber ein Taktsignal erhält, und ein ÄC-Glied und eine von einer Eingangsspannung abgeleitete Umladespannung die Impulsdauer der vom Multivibrator an den Gleichspannungswandler abgegebenen Impulse so bestimmt, daß die Wirkung von Eingangsspannungsänderungen auf die Ausgangsspannung des Gleichspannungswandlers kompensiert wird, dadurch gekennzeichnet, daß der monostabile Multivibrator aus zwei Gattern (G i, G 2) besteht, von denen das erste Gatter (G 1) als inverter und dar» zweite Gatter (G 2) als NOR-Gatter geschaltet ist und der Kondensator (C) des ÄC-Gliedes zwisehen dem Eingang des ersten Gatters (G 1) und dem Ausgang des zweiten Gatters (G 2) und sein Widerstand (R 1) zwischen dem Eingang des ersten Gatters (G 1) und einer Klemme (UL) geschaltet wird, an der die von der Eingangsspannung abhängige Umladespannung f i/Z,,) anliegtCircuit arrangement for keeping the output voltage of a DC / DC converter constant at constant load with a chopper, the DC / DC converter being controlled by a monostable multivibrator that receives a clock signal from a clock, and an ÄC element and a charge-reversal voltage derived from an input voltage, the pulse duration of the multivibrator the DC / DC converter output pulses determined so that the effect of input voltage changes on the output voltage of the DC / DC converter is compensated, characterized in that the monostable multivibrator consists of two gates (G i, G 2) , of which the first gate (G 1) as an inverter and the »second gate (G 2) is connected as a NOR gate and the capacitor (C) of the ÄC element between the input of the first gate (G 1) and the output of the second gate (G 2) and its resistor (R 1) is switched between the input of the first gate (G 1) and a terminal (UL) , to which the charge-reversal voltage fi / Z ,,), which is dependent on the input voltage, is applied
DE19742447850 1974-10-08 1974-10-08 Circuit arrangement for keeping the output voltage of a DC voltage converter constant Expired DE2447850C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19742447850 DE2447850C2 (en) 1974-10-08 1974-10-08 Circuit arrangement for keeping the output voltage of a DC voltage converter constant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19742447850 DE2447850C2 (en) 1974-10-08 1974-10-08 Circuit arrangement for keeping the output voltage of a DC voltage converter constant

Publications (2)

Publication Number Publication Date
DE2447850A1 DE2447850A1 (en) 1976-04-22
DE2447850C2 true DE2447850C2 (en) 1985-06-13

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Family Applications (1)

Application Number Title Priority Date Filing Date
DE19742447850 Expired DE2447850C2 (en) 1974-10-08 1974-10-08 Circuit arrangement for keeping the output voltage of a DC voltage converter constant

Country Status (1)

Country Link
DE (1) DE2447850C2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4017374A1 (en) * 1990-05-30 1991-12-05 Philips Patentverwaltung DC voltage converter supplying electronic appts. - uses controlled switch and associated control circuit responsive to supplied input voltage

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3000955C2 (en) * 1980-01-12 1984-09-20 Felten & Guilleaume Fernmeldeanlagen GmbH, 8500 Nürnberg Control circuit for stabilizing the output voltage of a forward converter

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1563058B2 (en) * 1966-08-05 1976-10-07 Telefunken Patentverwertungsgesellschaft Mbh, 7900 Ulm TWO-POINT REGULATED DC VOLTAGE CONVERTER CONSTANT SWITCHING FREQUENCY
US3624412A (en) * 1968-06-25 1971-11-30 Shindengen Kogyo A K A Shinden Regulated ac power supply utilizing a bidirectional power thyristor
DE1936924C3 (en) * 1969-07-19 1978-06-08 Ulrich Dipl.-Ing. 8047 Karlsfeld Timme DC chopper

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4017374A1 (en) * 1990-05-30 1991-12-05 Philips Patentverwaltung DC voltage converter supplying electronic appts. - uses controlled switch and associated control circuit responsive to supplied input voltage

Also Published As

Publication number Publication date
DE2447850A1 (en) 1976-04-22

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Legal Events

Date Code Title Description
OF Willingness to grant licences before publication of examined application
OD Request for examination
8125 Change of the main classification

Ipc: H02P 13/32

8127 New person/name/address of the applicant

Owner name: AEG-TELEFUNKEN NACHRICHTENTECHNIK GMBH, 7150 BACKN

8127 New person/name/address of the applicant

Owner name: ANT NACHRICHTENTECHNIK GMBH, 7150 BACKNANG, DE

D2 Grant after examination
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee