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An Integrated Lighting Unit With Regulated Pulse Current Driving Technique

机译：具有调节脉冲电流驱动技术的集成照明单元

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摘要

This paper proposes an integrated lighting unit using the regulated-pulse-current-driving technique for low-power application. On-chip/package integration of a white light-emitting diode (WLED) with a light-emitting diode (LED) driver, also named a lighting unit in this paper, may be ideal for smaller and lighter portable devices. The integrated lighting unit is connected to a pulse current driver fabricated with the complementary metal–oxide–semiconductor (CMOS) technology and a WLED on-chip integration. Such a combination would help reduce the packaging costs and the size of the device as well as increase the luminous density. Two control signals are used in the proposed driver to modulate the pulse current. One signal modulates the amplitude of the pulse current from 100 to 500 mA, and the other modulates the pulse current frequency between the ranges of 350 and 750 kHz. The dimming method and experiments on the prototype of the lighting unit have been built and measured. The active area of the designed chip is 0.64 mm $times$ 0.56 mm in a 0.5-$muhbox{m}$ CMOS process. The resulting integrated lighting unit works well; therefore, this compact device is suitable for portable applications.
机译：本文提出了一种采用稳压脉冲电流驱动技术的集成照明单元，以用于低功率应用。白光发光二极管（WLED）与发光二极管（LED）驱动器的片上/封装集成（在本文中也称为照明单元）可能是更小，更轻便的便携式设备的理想选择。集成照明单元连接到采用互补金属氧化物半导体（CMOS）技术和WLED片上集成技术制造的脉冲电流驱动器。这种组合将有助于降低包装成本和装置的尺寸，并增加发光密度。在建议的驱动器中使用了两个控制信号来调制脉冲电流。一个信号将脉冲电流的幅度调制为100到500 mA，另一个信号将脉冲电流频率调制为350至750 kHz的范围。建立并测量了照明单元原型的调光方法和实验。设计的芯片的有效面积为0.64毫米<公式> = 0.5毫米，在0.5- <公式>中为0.56毫米。 > $ muhbox {m} $ CMOS工艺。最终的集成照明单元效果很好；因此，这种紧凑的设备适用于便携式应用。

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