Stmicroelectronics S.r.l.

Sgs-thomson Microelectronics S.r.l.

Magneti Marelli S.p.a.

Angelo Crespi

Vanni Poletto

Stefania Chicca

Paolo Mastella

An electronic circuit with suppression of high-voltage transients on the power supply line includes first and second power transistors series-connected between first and second power supplies, and first and second driving circuits for respective first and second power transistors. The first driving circuit includes a first diode and a first Zener diode, and the second driving circuit includes a second diode and a second Zener diode. Anodes of the first diode and the first Zener diode are connected to the cathode of the second Zener diode. A cathode of the first Zener diode is connected to the first power supply. A cathode of the first diode is connected to a gate of the first power transistor. Anodes of the second diode and the second Zener diode are connected together. A cathode of the second diode is connected to a gate of the second power transistor.

Electronic bridge and half-bridge circuits with suppression of

A circuit for diagnosing the state of a load connected to a driver includes a DMOS transistor interposed between a terminal of the load and voltage comparator circuits. The DMOS transistor limits the maximum voltage input to the comparators to thereby reduce the circuit area occupied by the comparators and consequently to reduce the cost of the diagnosis circuit.

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Cinisello Balsamo, Italy

Angelo Crespi