GB1172544A - Improvements in or relating to Switched Voltage Regulator Arrangements - Google Patents

Improvements in or relating to Switched Voltage Regulator Arrangements

Info

Publication number
GB1172544A
GB1172544A GB1027567A GB1027567A GB1172544A GB 1172544 A GB1172544 A GB 1172544A GB 1027567 A GB1027567 A GB 1027567A GB 1027567 A GB1027567 A GB 1027567A GB 1172544 A GB1172544 A GB 1172544A
Authority
GB
United Kingdom
Prior art keywords
transistor
members
control
current
cut
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
GB1027567A
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.)
BAE Systems Electronics Ltd
Original Assignee
Marconi Co Ltd
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
Priority claimed from AU2492/66A external-priority patent/AU405503B2/en
Application filed by Marconi Co Ltd filed Critical Marconi Co Ltd
Publication of GB1172544A publication Critical patent/GB1172544A/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
    • H02M3/1563—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 without using an external clock

Landscapes

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

Abstract

1,172,544. Automatic voltage control. MARCONI CO. Ltd. March 3, 1967 [March 7, 1966], No.10275/67. Heading G3R. A voltage regulator of the type in which a transistor 2 is switched on and off by a comparator control circuit comprising members 3, 4, 5, 10, power being supplied by storage members 7, 8, 7<SP>1</SP> , 8<SP>1</SP>, when transistor 2 is off, also includes a protective arrangement comprising members 15-- 23 which operates when the current flowing through resistor 19 exceeds a predetermined value to control the comparator control so that the output current is regulated to a substantially constant value by reducing the mark/space ratio of the transistor 2 to a value determined by the time constant provided by members 20, 22. In a typical cycle of operation, excess current causes members 15, 21 to conduct and transistor 3 is switched well into conduction to cut off transistor 2, which causes the immediate cut off of transistor 15 and the cut off of transistor 3 after a time delay determined by members 20, 22. Members 24, 25, 26 cause transistor 3 to operate as a linear amplifier with a high emitter resistor under overload or short circuit conditions, thus limiting the base current of transistor 3 and isolating the Zener diode 5. Members 27, 28 produce voltage and thermal balance in the comparator amplifier and isolate the resistor 20 from the bias network of transistor 3. Members 10, 11, 12 control the rise of charging current for the capacitor 8 when first switching on the regulator. The integrating circuit 13, 14 controls the rate of rise in the reference voltage during the switch-on transient period, causing switching to commence early.
GB1027567A 1966-03-07 1967-03-03 Improvements in or relating to Switched Voltage Regulator Arrangements Expired GB1172544A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AU2492/66A AU405503B2 (en) 1966-03-07 Overload protection for switched-voltage regulators

Publications (1)

Publication Number Publication Date
GB1172544A true GB1172544A (en) 1969-12-03

Family

ID=3693001

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1027567A Expired GB1172544A (en) 1966-03-07 1967-03-03 Improvements in or relating to Switched Voltage Regulator Arrangements

Country Status (1)

Country Link
GB (1) GB1172544A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2307316A (en) * 1995-10-24 1997-05-21 Rohm Co Ltd Switching power supply apparatus
WO1998024170A1 (en) * 1996-11-22 1998-06-04 Siemens Aktiengesellschaft Deep-seated free-oscillating switching regulator
GB2339930A (en) * 1995-10-24 2000-02-09 Rohm Co Ltd Power supply apparatus

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2307316A (en) * 1995-10-24 1997-05-21 Rohm Co Ltd Switching power supply apparatus
US5773965A (en) * 1995-10-24 1998-06-30 Rohm Co., Ltd. Switching power supply apparatus for converting a high DC voltage into a low DC voltage
GB2307316B (en) * 1995-10-24 1999-12-29 Rohm Co Ltd Power supply apparatus
GB2339930A (en) * 1995-10-24 2000-02-09 Rohm Co Ltd Power supply apparatus
GB2339930B (en) * 1995-10-24 2000-03-29 Rohm Co Ltd Power supply apparatus
WO1998024170A1 (en) * 1996-11-22 1998-06-04 Siemens Aktiengesellschaft Deep-seated free-oscillating switching regulator

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Legal Events

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