浅谈On Semi NCV7692汽车LED灯电流控制的解刨

2020-12-06作者：电工小雨我要评论

图10.NCV7692大电流时刹车灯/尾灯应用电路图

[原创] On Semi NCV7692汽车LED灯电流控制解决方案

图11.NCV7692没有微处理器的应用框图

评估板EVBUM2664

NCV7692 High-currentDaylight Running LightEvaluation Board

The evaluation board demonstrates high−current daylight running light (DRL) solution. The board regulates constant current of 0.54 A through two on−board white high power LEDs in the wide range of the supply voltage. The current is reduced for the board temperature above 85°C. The cooling is provided through passive heat sink mounted on the bottom side of the board. In case of LEDs short or opening, the current source is disabled and the fault may be detected by the ECU diagnostics.

评估板EVBUM2664主要特性:

• Wide range of supply voltage: 7 to 40 V (thermally limited)

• Two high−brightness on−board white LEDs

• Nominal LED current of 0.54 A

• Over−temperature current fold−back protection

• LED short−circuit and open−load emulation jumpers

• Positions for optional EMC capacitors

• One−side components assembly

• Passive cooling (heat sink)

[原创] On Semi NCV7692汽车LED灯电流控制解决方案