EP 2591550 A2 20130515 - CIRCUIT FOR PROTECTING AGAINST REVERSE POLARITY
Title (en)
CIRCUIT FOR PROTECTING AGAINST REVERSE POLARITY
Title (de)
SCHALTUNG ZUM SCHUTZ GEGEN VERPOLUNG
Title (fr)
CIRCUIT DE PROTECTION CONTRE LES INVERSIONS DE POLARITÉ
Publication
Application
Priority
- DE 102010051874 A 20101122
- DE 2011050046 W 20111012
Abstract (en)
[origin: CA2815248A1] The invention relates to a circuit for protecting an electric load against reverse polarity using a MOSFET (metal oxide semiconductor field-effect transistor) (T1), wherein the circuit is connected on the input side to a voltage supply and on the output side to the load and wherein the source connection of the MOSFET (T1) is connected to the voltage supply and the drain connection of the MOSFET (T1) is connected to the load, wherein said circuit is characterized, in regard to the development of reliable reverse polarity protection having dynamic behavior similar to a diode and at the same time low power loss, in that the gate of the MOSFET (T1) is connected to the collector of a first bipolar transistor (T3) and the source of the MOSFET (T1) is connected to the emitter of the first bipolar transistor (T3) and in that the base of the first bipolar transistor (T3) is controlled by means of a control current, wherein the control current is derived from the voltage at the drain of the MOSFET (T1).
IPC 8 full level
H03K 17/06 (2006.01); H02H 11/00 (2006.01); H02J 7/00 (2006.01)
CPC (source: EP US)
H01H 83/08 (2013.01 - US); H02H 11/003 (2013.01 - EP US); H02J 7/0034 (2013.01 - EP US); H03K 2017/307 (2013.01 - EP US)
Citation (search report)
See references of WO 2012069045A2
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
DE 202010016526 U1 20110414; CA 2815248 A1 20120531; DE 102010051874 A1 20120524; EP 2591550 A2 20130515; US 2013229738 A1 20130905; US 9324530 B2 20160426; WO 2012069045 A2 20120531; WO 2012069045 A3 20120823
DOCDB simple family (application)
DE 202010016526 U 20101213; CA 2815248 A 20111012; DE 102010051874 A 20101122; DE 2011050046 W 20111012; EP 11818916 A 20111012; US 201113883746 A 20111012