公开(公告)号：JPH05308734A

公开(公告)日：1993-11-19

申请号：JP27402791

申请日：1991-10-22

Applicant: MARELLI AUTRONICA

Inventor： MARUCHIERO BOERA ,  BUARERIO JIYORUJIETSUTA

IPC: H02J7/16 ,  H02J7/24 ,  H02P9/30

Abstract: PURPOSE: To eliminate another terminal (pin) even when a voltage regulator circuit is formed into an integrated circuit form by eliminating connection between a battery anode and the voltage regulator circuit for simplified wiring. CONSTITUTION: This voltage regulator circuit is provided with sensors 19, 20 for supplying an electric signal which indicates current passing through the field winding 5 of a generator 2 at the time of operating, and control circuit 10-15 connected to the sensors 19, 20 so as to operate. The control circuit 10-15 is formed so as to control a transistor 16 for driving the field winding 5, maintain the voltage at the terminal of the battery 1 constant substantially, and change the current supplied to a battery 1 by the generator 2.

公开(公告)号：JPH03180918A

公开(公告)日：1991-08-06

申请号：JP30230590

申请日：1990-11-06

Applicant: MARELLI AUTRONICA

Inventor： BUARERIO JIYORUJIETSUTA ,  IBESU REGURANDO ,  FURANKO SARERUNO ,  JIYANRUIJII MORETSURO

IPC: G06F3/00 ,  H03K17/082

Abstract: PURPOSE: To prevent the damage of a transistor TR by permanently disabling the TR concerned with a control part, which detects short-circuit, in the case of repeated occurrence of short-circuit in a load. CONSTITUTION: When a short-circuit state occurs between the drain of a TR Mi and the positive pole of a power source VBD, a diagnostic logic circuit 13 detects this state and applies a disable signal to a control circuit 12 for a temporary stop period. If a short-circuit state between the drain of the TR Mi and the positive pole of the power source VBD is detected again after this period, a first breakdown signal is outputted, and the disable signal is permanently applied to the control circuit 12. A driver circuit 12 is stopped finally in this manner, and then, the signal of a terminal CMD1 is returned to level '0' and is kept in this level. Thus, stress of the TR M1 is eliminated to prevent the damage of the TR M1.