公开(公告)号：US08952630B2

公开(公告)日：2015-02-10

申请号：US14049590

申请日：2013-10-09

Applicant: STMicroelectronics S.r.l.

Inventor： Vincenzo Randazzo ,  Giovanni Luca Torrisi ,  Atanasio Labarbera

IPC: H05B37/02 ,  B60Q1/38 ,  B60Q1/34

CPC classification number: B60Q1/38 ,  B60Q1/34 ,  B60Q1/382

Abstract: An electronic system for driving a lamp of a blinker of a vehicle may include a switch having a first input terminal configured to receive a battery voltage, a second input control terminal configured to receive a control signal for operating the switch, and an output terminal. The system may also include a change-over switch configured to connect, alternatively, the output terminal of the switch to the lamp and to a high impedance reference. The system may also include an electronic device connected to the switch and configured to detect a voltage drop between the first input terminal and the output terminal, and, based upon the voltage drop, generate the control signal to have a value to maintain the switch open for a time interval, and generate the control signal to have a second value to maintain the switch closed for another time interval.

Abstract translation: 用于驱动车辆指示灯的灯的电子系统可以包括具有被配置为接收电池电压的第一输入端子的开关，被配置为接收用于操作开关的控制信号的第二输入控制端子和输出端子。 该系统还可以包括转换开关，其被配置为可选地将开关的输出端子连接到灯和高阻抗基准。 该系统还可以包括连接到开关并被配置为检测第一输入端子和输出端子之间的电压降的电子设备，并且基于电压降，产生控制信号以具有保持开关断开的值 并且产生控制信号以具有第二值，以将开关保持另一时间间隔。