Global Patent Index - EP 0838745 B1

EP 0838745 B1 2001-12-12 - 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

EP 0838745 B1 (FR)

Application

EP 97410120 A

Priority

FR 9613280 A

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 (main, further and additional classification)

G05F 1/59

IPC 8 full level (invention and additional information)

G05F 1/59 (2006.01)

CPC (invention and additional information)

G05F 1/59 (2013.01)

Designated contracting state (EPC)

DE FR GB IT

EPO simple patent family

EP 0838745 A1 19980429; EP 0838745 B1 20011212; DE 69709029 D1 20020124; FR 2755316 A1 19980430; FR 2755316 B1 19990115; US 6002295 A 19991214

INPADOC legal status


2008-04-30 [PG25 FR] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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2007-11-24 [PG25 GB] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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- Effective date: 20061024

2007-07-27 [REG FR ST] NOTIFICATION OF LAPSE

- Effective date: 20070629

2007-06-27 [GBPC] GB: EUROPEAN PATENT CEASED THROUGH NON-PAYMENT OF RENEWAL FEE

- Effective date: 20061024

2005-10-19 [PGFP GB] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

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2002-12-04 [26N] NO OPPOSITION FILED

2002-03-27 [GBT] GB: TRANSLATION OF EP PATENT FILED (GB SECTION 77(6)(A)/1977)

- Effective date: 20020228

2002-03-13 [PG25 DE] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: DE

- Free text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

- Effective date: 20020313

2002-01-24 [REF] CORRESPONDS TO:

- Document: DE 69709029 20020124

2002-01-01 [REG GB IF02] EUROPEAN PATENT IN FORCE AS OF 2002-01-01

2001-12-19 [RAP2] TRANSFER OF RIGHTS OF AN EP GRANTED PATENT

- Owner name: STMICROELECTRONICS S.A.

2001-12-12 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: B1

- Designated State(s): DE FR GB IT

2001-12-12 [PG25 IT] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: IT

- Free text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

- Effective date: 20011212

2000-12-13 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20001026

1999-02-03 [RAP3] CORRECTION OF THE ADDRESS OR NAME OF APPLICANT (A DOCUMENT)

- Owner name: STMICROELECTRONICS S.A.

1999-01-13 [AKX] PAYMENT OF DESIGNATION FEES

- Free text: DE FR GB IT

1999-01-13 [RBV] DESIGNATED CONTRACTING STATES (CORRECTION):

- Designated State(s): DE FR GB IT

1998-12-09 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19981012

1998-04-29 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): DE FR GB IT