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GB1536408A - Dc-dc converter circuits - Google Patents

Dc-dc converter circuits

Info

Publication number
GB1536408A
GB1536408A GB52771/75A GB5277175A GB1536408A GB 1536408 A GB1536408 A GB 1536408A GB 52771/75 A GB52771/75 A GB 52771/75A GB 5277175 A GB5277175 A GB 5277175A GB 1536408 A GB1536408 A GB 1536408A
Authority
GB
United Kingdom
Prior art keywords
voltage
control
dec
error
output
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
GB52771/75A
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of GB1536408A publication Critical patent/GB1536408A/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
    • H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
    • H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
    • H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
    • H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/33507—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc-Dc Converters (AREA)

Abstract

1536408 Automatic voltage control SIEMENS AG 24 Dec 1975 [27 Dec 1974] 52771/75 Headings G3R and G3X [Also in Division H2] In a DC-DC converter having automatic voltage regulation by monitoring the output voltage and using the error to control the keying ratio of a switching device such as transitor Tsl, an additional feed-forward regulator is included comprising a capactitor Cr charged from the input voltage Ue via a resistor R1 and via a constant-current source Ts3 and periodically discharged, the sawtooth voltage being preferably compared with the error from the closed loop regulator RV so as to provide further control of keying ratio in dependence on variation in input voltage Ue. As described, each sawtooth voltage developed across Cr is terminated by a pulse generator T which periodically turns on a discharging transistor Ts2. The comparison is achieved by a Schmitt trigger S feeding an AND gate M the output of which is coupled via a driver LV to the chopping transistor Ts1.
GB52771/75A 1974-12-27 1975-12-24 Dc-dc converter circuits Expired GB1536408A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2461654A DE2461654C3 (en) 1974-12-27 1974-12-27 Externally controlled flyback converter with regulated output voltage

Publications (1)

Publication Number Publication Date
GB1536408A true GB1536408A (en) 1978-12-20

Family

ID=5934669

Family Applications (1)

Application Number Title Priority Date Filing Date
GB52771/75A Expired GB1536408A (en) 1974-12-27 1975-12-24 Dc-dc converter circuits

Country Status (7)

Country Link
JP (1) JPS5193352A (en)
DE (1) DE2461654C3 (en)
FR (1) FR2296301A1 (en)
GB (1) GB1536408A (en)
IT (1) IT1051417B (en)
NL (1) NL7515111A (en)
SE (1) SE7514461L (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2156548A (en) * 1984-03-28 1985-10-09 United Technologies Corp Flyback feedforward pulse width modulation regulator
GB2159370A (en) * 1984-05-23 1985-11-27 Plessey Co Plc Telephone key station and key station
GB2175108A (en) * 1985-05-10 1986-11-19 Rca Corp Regulating power supply for video display apparatus

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3109034A1 (en) * 1981-03-10 1982-09-30 Siemens AG, 1000 Berlin und 8000 München Switching regulator for regulating and/or limiting an output variable
DE3330039A1 (en) * 1983-08-19 1985-02-28 Siemens AG, 1000 Berlin und 8000 München LOCKING CONVERTER SWITCHING POWER SUPPLY
DE3609731C2 (en) * 1986-03-22 1995-06-14 Ant Nachrichtentech Process for regulating the output voltage of a switching regulator and arrangement therefor
US4809150A (en) * 1988-01-27 1989-02-28 Electric Power Research Institute, Inc. DC to DC converter with feed forward and feed back regulation

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS502150A (en) * 1973-05-15 1975-01-10

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2156548A (en) * 1984-03-28 1985-10-09 United Technologies Corp Flyback feedforward pulse width modulation regulator
GB2159370A (en) * 1984-05-23 1985-11-27 Plessey Co Plc Telephone key station and key station
US4654870A (en) * 1984-05-23 1987-03-31 Plessey Overseas Limited Telephone key systems and key stations therefor
GB2175108A (en) * 1985-05-10 1986-11-19 Rca Corp Regulating power supply for video display apparatus
US4679131A (en) * 1985-05-10 1987-07-07 Rca Corporation Regulating power supply for video display apparatus
GB2175108B (en) * 1985-05-10 1989-12-28 Rca Corp Regulating power supply for video display apparatus

Also Published As

Publication number Publication date
JPS5193352A (en) 1976-08-16
NL7515111A (en) 1976-06-29
IT1051417B (en) 1981-04-21
FR2296301A1 (en) 1976-07-23
DE2461654A1 (en) 1976-07-01
SE7514461L (en) 1976-06-28
DE2461654B2 (en) 1978-08-24
DE2461654C3 (en) 1979-04-19

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee