EP 0744683 A1 19961127 - A constant voltage drop voltage regulator
Title (en)
A constant voltage drop voltage regulator
Title (de)
Konstantspannungsabfall-Spannungsregler
Title (fr)
Régulateur de tension à chute de tension constante
Publication
Application
Priority
EP 95830216 A 19950522
Abstract (en)
A constant voltage drop voltage regulator for low power dissipation electronic systems which, from a first regulated supply voltage (V1) on the order of few volts, obtains a second regulated supply voltage (V2) (having the same regulating characteristics as the first in absolute value) a predetermined fraction of a volt lower than the first, by means of a MOSFET (1) in series between the input (2) and the output (4) of the regulator, the conductivity of the MOSFET (1) being varied by a control circuit (5) which is powered from a voltage multiplier (12) at a voltage (VT) multiple of the first voltage (V1), by comparison of the voltage drop due to the MOSFET (1) and suitably amplified with a predetermined reference voltage (VREF), the comparison error, as amplified with a high gain, being applied as a control signal to the gate electrode of the MOSFET (1). <IMAGE>
IPC 1-7
IPC 8 full level
G05F 1/46 (2006.01); G05F 1/565 (2006.01)
CPC (source: EP)
G05F 1/465 (2013.01); G05F 1/565 (2013.01)
Citation (search report)
- [X] FRANK GOODENOUGH: "TINY IC PLUS FET BUILDS "SUPER LDO" REGULATOR", ELECTRONIC DESIGN, vol. 42, no. 5, 7 March 1994 (1994-03-07), HASBROUCK HEIGHTS, NEW JERSEY US, pages 45 - 49, XP000441323
- [A] DINSMORE D ET AL: "REGULATOR CIRCUIT GENERATES BOTH 3.3V AND 5V OUTPUTS FROM 3.3V OR 5V TO RUN COMPUTERS AND RS232", EDN ELECTRICAL DESIGN NEWS, vol. 38, no. 12, pages 163 - 164, XP000382990
- [A] NIEDRA J M: "ANALOG SYNTHESIZED FAST-VARIABLE LINEAR LOAD", AEROSPACE POWER SYSTEMS, BOSTON, AUG. 4 - 9, 1991, vol. 1, 4 August 1991 (1991-08-04), INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS, pages 93 - 97, XP000280433
- [A] WONG J: "SPANNUNGSREGLER MIT MINIMALER VERLUSTLEISTUNG OPTIMAL FUER ANWENDUNGEN IN BATTERIEBETRIEBENEN GERAETEN", ELEKTRONIK, vol. 40, no. 12, 11 June 1991 (1991-06-11), pages 96, 98 - 102, XP000234722
- [A] FRANKE M: "ZERO-DROP-SPANNUNGSREGLER", RADIO FERNSEHEN ELEKTRONIK, vol. 40, no. 7, 1 January 1991 (1991-01-01), pages 389, XP000235733
- [A] BRICE C: "LOW DROP OUT MOSFET VOLTAGE REGULATOR", MOTOROLA TECHNICAL DEVELOPMENTS, vol. 13, 1 July 1991 (1991-07-01), pages 82 - 84, XP000259232
- [A] "UTILISER LA POST-REGULATION SYNCHRONE", ELECTRONIQUE, no. 41, PARIS FR, pages 82, XP000474955
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0744683 A1 19961127; EP 0744683 B1 19990303; DE 69508063 D1 19990408; DE 69508063 T2 19990805
DOCDB simple family (application)
EP 95830216 A 19950522; DE 69508063 T 19950522