公开(公告)号：US20020085331A1

公开(公告)日：2002-07-04

申请号：US09969552

申请日：2001-10-02

Applicant: STMicroelectronics S.r.l.

Inventor： Natale Aiello ,  Atanasio La Barbera ,  Vincenzo Randazzo ,  Giovanni Luca Torrisi

IPC: H02H005/04

CPC classification number: H05B41/2856

Abstract: An electronic thermal protection circuit is for high currents which can occur in the start-up phase in lighting converters. The circuit is associated with a power device having an output terminal connected to an electric load and at least one control terminal receiving a predetermined driving current value by a driving circuit portion. Advantageously, an integrated temperature sensor is provided to detect the temperature of the power device, and an output stage is connected downstream of the sensor to switch off the driving circuit portion when a predetermined operation temperature is exceeded.

Abstract translation: 电子热保护电路适用于在照明转换器启动阶段可能发生的高电流。 该电路与具有连接到电负载的输出端子和由驱动电路部分接收预定驱动电流值的至少一个控制端子的功率器件相关联。 有利地，提供集成温度传感器以检测功率器件的温度，并且当超过预定操作温度时，输出级连接在传感器的下游，以关断驱动电路部分。