ELECTRICAL PROTECTION DEVICE AND METHOD OF PROTECTING AN ELECTRONIC DEVICE

摘要

An electrical protection device including an input line, an output terminal, and a power transistor coupled between the input line and the output terminal A sensing transistor is connected between the input line and the output terminal and has a body terminal. A control stage is coupled to respective control terminals of the power transistor and of the sensing transistor and is configured to limit a first current of the power transistor to a protection value. A body-driving stage is coupled to the body terminal and is configured to bias the body terminal of the sensing transistor as a function of an operating condition of the power transistor.

主权项

1. An electrical protection device, comprising:
an input line; an output terminal; a power transistor coupled between the input line and the output terminal; a sensing transistor coupled between the input line and the output terminal and having a body terminal; a control stage (coupled to respective control terminals of the power transistor and of the sensing transistor and configured to limit a first current of the power transistor to a protection value; and a body-driving stage coupled to the body terminal and configured to bias the body terminal of the sensing transistor as a function of an operating condition of the power transistor.