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首页> 外文期刊>International Journal of Innovative Computing Information and Control >DESIGN OF A DUAL-INPUT BUCK-BOOST CONVERTER FOR MOBILE BACK-LIGHTING APPLICATIONS
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DESIGN OF A DUAL-INPUT BUCK-BOOST CONVERTER FOR MOBILE BACK-LIGHTING APPLICATIONS

机译：移动背光应用的双输入降压-升压转换器的设计

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摘要

For mobile back-lighting applications, a dual-input white LED (WLED) driver using a bi-direction buck-boost converter is proposed in this paper. The proposed driver has two input terminals: battery input V_(in1) and solar-cell input V_(in2). Unlike conventional drivers using boost converters, step-up SC DC-DC converters, and so on, the proposed converter drives the anode and the cathode of LEDs by using the solar-cell's voltage and the negative stepped-down voltage, respectively. Furthermore, by converting solar energy, the proposed driver can charge a rechargeable battery when the LED backlight is standby mode. Therefore, the proposed driver can achieve long battery lifetime. The validity of the proposed driver is confirmed by SPICE simulations and experiments. SPICE simulations show that the proposed driver can offer the sufficient voltage to drive LEDs by using solar energy and battery energy in spite of the variation in V_(in2)- Furthermore, by employing a bi-direction buck-boost converter, the proposed driver provides us to realize long battery lifetime, because the battery charge process was confirmed by experiments.
机译：对于移动背光应用，本文提出了一种使用双向降压-升压转换器的双输入白光LED（WLED）驱动器。建议的驱动器具有两个输入端子：电池输入V_（in1）和太阳能电池输入V_（in2）。与使用升压转换器，升压SC DC-DC转换器等的传统驱动器不同，所提出的转换器分别通过使用太阳能电池的电压和负的降压电压来驱动LED的阳极和阴极。此外，通过转换太阳能，当LED背光灯处于待机模式时，建议的驱动器可以为可充电电池充电。因此，提出的驱动器可以实现较长的电池寿命。 SPICE仿真和实验证实了所提出驱动程序的有效性。 SPICE仿真显示，尽管V_（in2）有所变化，但通过使用太阳能和电池能量，提出的驱动器仍可以提供足够的电压来驱动LED。此外，通过采用双向降压-升压转换器，提出的驱动器可以提供我们实现了较长的电池寿命，因为电池充电过程已通过实验证实。

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