公开(公告)号：WO2013076684A1

公开(公告)日：2013-05-30

申请号：PCT/IB2012/056638

申请日：2012-11-22

Applicant: AUTOMOTIVE LIGHTING ITALIA S.P.A. A SOCIO UNICO

Inventor： BACCARIN, Davide ,  ENGLARO, Andrea ,  MARCORI, Franco

IPC: H05B33/08

CPC classification number: H05B33/0827

Abstract: A driver circuit for lighting sources (D1-D6), in particular LED, comprising at least a first and a second lighting branch (A, B, C) connected in parallel between two power supply terminals, each of said first and second lighting branches comprising one or more lighting sources (D1, D2; D3, D4; D5, D6) connected together in series. A plurality of lighting switching elements (TLEDA, TLEDB, TLEDC), each suitable for driving a respective lighting branch, susceptible to operating in a first state of nominal functioning and in a different second state of functioning. The circuit also comprises control means (30) for controlling said lighting switching elements, so as to force said lighting switching elements to operate in said first state of nominal functioning.

Abstract translation: 一种用于照明源（D1-D6）的驱动电路，特别是LED，包括至少在两个电源端子之间并联连接的第一和第二照明支路（A，B，C），所述第一和第二照明支路 包括串联连接在一起的一个或多个光源（D1，D2; D3，D4; D5，D6）。 多个照明开关元件（TLEDA，TLEDB，TLEDC），每个照明开关元件（TLEDA，TLEDB，TLEDC）各自适于驱动相应的照明支路，易于在第一状态下工作，并处于不同的第二功能状态。 该电路还包括用于控制所述照明开关元件的控制装置（30），以便迫使所述照明开关元件在所述第一标称功能状态下工作。

公开(公告)号：WO2013076685A1

公开(公告)日：2013-05-30

申请号：PCT/IB2012/056639

申请日：2012-11-22

Applicant: AUTOMOTIVE LIGHTING ITALIA S.P.A. A SOCIO UNICO

Inventor： BACCARIN, Davide ,  ENGLARO, Andrea ,  MARCORI, Franco

IPC: H05B33/08

CPC classification number: H05B33/0812 ,  H05B33/0827 ,  Y02B20/343

Abstract: LED driver circuit for powering at least one LED string comprises: at least one lighting switching element (TLEDA; TLEDB), connected to the LED string and operable to switch at least between an inactive state, in which it prevents the passage of a driver current (ILED) into said LED string, and an active state, in which it imposes a driver current (ILED) through said LED string, The driver current is dependent on a driver voltage (Vref) applied to the lighting switching element. The circuit further comprises switch driver circuit means (10, 20, 40) suitable for generating a driver voltage (Vref) which depends in a substantially linear manner on the power supply voltage (VDD).

Abstract translation: 用于为至少一个LED串供电的LED驱动器电路包括：至少一个照明开关元件（TLEDA; TLEDB），其连接到LED串并且可操作以至少在非活动状态之间切换，其中它阻止驱动器电流的通过 （ILED）到所述LED串中，并且其中通过所述LED串施加驱动电流（ILED）的激活状态。所述驱动器电流取决于施加到所述照明开关元件的驱动器电压（Vref）。 电路还包括适于产生基本上线性地依赖于电源电压（VDD）的驱动电压（Vref）的开关驱动器电路装置（10,20,40）。