EP 0838745 B1 20011212 - Voltage regulator with automatic selection of the highest supply voltage
Title (en)
Voltage regulator with automatic selection of the highest supply voltage
Title (de)
Spannungsregler mit automatischer Auswahl der höchsten Versorgungsspannung
Title (fr)
Régulateur de tension à sélection automatique d'une tension d'alimentation la plus élevée
Publication
Application
Priority
FR 9613280 A 19961025
Abstract (en)
[origin: EP0838745A1] The voltage regulator delivers a controlled output voltage via MOSFET power transistors (M10M, M10L), with the output voltage set relative to a reference potential (VBG). The regulator has two input terminals (EM, EL), each connected to an independent supply source (VM, VL). An automatic selection circuit (11) connects the higher of the input voltages to the regulator input. The terminal connected to the lower supply voltage is automatically isolated from the remainder of the circuit. The selector (11) introduces a small voltage drop, equal to the voltage drop over a single power transistor, between the input and the output of the regulator.
IPC 1-7
IPC 8 full level
G05F 1/59 (2006.01)
CPC (source: EP US)
G05F 1/59 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0838745 A1 19980429; EP 0838745 B1 20011212; DE 69709029 D1 20020124; FR 2755316 A1 19980430; FR 2755316 B1 19990115; US 6002295 A 19991214
DOCDB simple family (application)
EP 97410120 A 19971024; DE 69709029 T 19971024; FR 9613280 A 19961025; US 95521197 A 19971021