Global Patent Index - EP 0816964 B1

EP 0816964 B1 20001122 - Voltage regulating device with low internal power dissipation

Title (en)

Voltage regulating device with low internal power dissipation

Title (de)

Spannungsregelungsvorrichtung mit geringer interner Verlustleistung

Title (fr)

Dispositif de régulation de tension à faible dissipation interne d'énergie

Publication

EP 0816964 B1 20001122 (FR)

Application

EP 97201851 A 19970617

Priority

FR 9607940 A 19960626

Abstract (en)

[origin: EP0816964A1] The voltage regulator circuit delivers a variable current at constant voltage, using series transistors (T1,T2) controlled by an output sensor and a feedback circuit. The energy dissipated over the series transistors is partly taken to the exterior of the regulator by an electric circuit, reducing the power that must be dissipated by the regulator circuit itself. A resistor (R1) is connected between the junction of the two series regulator transistors and the output. By controlling the series transistors part of the current can be diverted round the second transistor through the resistance. A third transistor (T3) is connected as a current mirror to the first (series) transistor (T1) and provides an input to control the extent of current diversion.

IPC 1-7

G05F 1/569

IPC 8 full level

G05F 3/26 (2006.01); G05F 1/56 (2006.01); G05F 1/569 (2006.01); G05F 3/28 (2006.01)

CPC (source: EP US)

G05F 1/569 (2013.01 - EP US)

Designated contracting state (EPC)

DE FR GB IT

DOCDB simple family (publication)

EP 0816964 A1 19980107; EP 0816964 B1 20001122; DE 69703568 D1 20001228; DE 69703568 T2 20010613; FR 2750514 A1 19980102; JP H1063353 A 19980306; US 5929616 A 19990727

DOCDB simple family (application)

EP 97201851 A 19970617; DE 69703568 T 19970617; FR 9607940 A 19960626; JP 16878297 A 19970625; US 88244497 A 19970625