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Development of Low Power LED Driver Using LTSpice Software



Author(s)

Muhammad Ikram Mohd Rashid, Aim Izzuddin Hakimi Mohamad Bekri, Suliana Ab Ghani, Mudathir Funsho Akorede, Mohd Herwan Sulaiman

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DOI:10.17265/2328-2223/2013.12.003

LED driver is regulated power supply designed to match the characteristics of an LED or array of LEDs in our application. The LED current can vary substantially over the battery voltage range even in normal operation device, thus affect the brightness and reduce the life of the lighting device. This project presents a method for the system that provides more efficient solution for driving a low power LED driver by control the LED current and to improve the usage of LEDs in good luminosity, efficiency and long life service. The current mode PWM (pulse width modulation) controlled boost converter for power LEDs application is introduced. According to the characteristic of the power LEDs, they are current controlled devices. Typically, the switching converters are used as the driver for power LED. For this project, the boost topology is selected as the power LEDs driver. Besides, the current mode PWM controller is used to ensure the system is stable. The project used LTC 3783 as PWM control IC and connected to driver circuit to drive low power LED. The calculations are based on design specifications. PSpice software is used for the simulation before the built hardware implementation. The built hardware is tested and finally the waveform and result are recorded

Low power LED, PSpice, LTspice