Buck-boost power LED driver using PIC microcontroller

One traditional low-cost way of driving LED in electrical applications uses a resistor in series with the LED device. Although this driving scheme is simple and inexpensive, it suffers several disadvantages. The LED current can vary substantially over the battery voltage range even in normal operati...

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Bibliographic Details
Main Author:	Mohd Taufik, Ab Rahman
Format:	Undergraduates Project Papers
Language:	English
Published:	2008
Subjects:	TK Electrical engineering. Electronics Nuclear engineering
Online Access:	http://umpir.ump.edu.my/id/eprint/363/ http://umpir.ump.edu.my/id/eprint/363/ http://umpir.ump.edu.my/id/eprint/363/1/Mohd_Taufik_Ab_Rahman%281%29.pdf

id	ump-363
recordtype	eprints
spelling	ump-3632015-03-03T06:16:47Z http://umpir.ump.edu.my/id/eprint/363/ Buck-boost power LED driver using PIC microcontroller Mohd Taufik, Ab Rahman TK Electrical engineering. Electronics Nuclear engineering One traditional low-cost way of driving LED in electrical applications uses a resistor in series with the LED device. Although this driving scheme is simple and inexpensive, it suffers several disadvantages. The LED current can vary substantially over the battery voltage range even in normal operation of the device, thus affecting the brightness and reducing the service life of the lighting device. Additionally, protection is needed from automotive voltage transients and reverse polarity. These disadvantages are typically resolved by using constant-current linear regulators. Besides driving the LED at a programmed current, these regulators can inherently protect from a reverse-polarity application and block voltage transients up to tens of volts. Linear current regulators do not require input EMI filters and can yield inexpensive LED driver solutions. However, both the resistor ballasts and the linear regulators exhibit low efficiency. They may become impractical for driving high-brightness LED loads due to the excessive heat dissipation. Therefore, switching power converters are needed for driving many signal and lighting LED devices. 2008-11 Undergraduates Project Papers NonPeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/363/1/Mohd_Taufik_Ab_Rahman%281%29.pdf Mohd Taufik, Ab Rahman (2008) Buck-boost power LED driver using PIC microcontroller. Faculty of Electrical & Electronic Engineering, Universiti Malaysia Pahang. http://iportal.ump.edu.my/lib/item?id=chamo:37741&theme=UMP2
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English
topic	TK Electrical engineering. Electronics Nuclear engineering
spellingShingle	TK Electrical engineering. Electronics Nuclear engineering Mohd Taufik, Ab Rahman Buck-boost power LED driver using PIC microcontroller
description	One traditional low-cost way of driving LED in electrical applications uses a resistor in series with the LED device. Although this driving scheme is simple and inexpensive, it suffers several disadvantages. The LED current can vary substantially over the battery voltage range even in normal operation of the device, thus affecting the brightness and reducing the service life of the lighting device. Additionally, protection is needed from automotive voltage transients and reverse polarity. These disadvantages are typically resolved by using constant-current linear regulators. Besides driving the LED at a programmed current, these regulators can inherently protect from a reverse-polarity application and block voltage transients up to tens of volts. Linear current regulators do not require input EMI filters and can yield inexpensive LED driver solutions. However, both the resistor ballasts and the linear regulators exhibit low efficiency. They may become impractical for driving high-brightness LED loads due to the excessive heat dissipation. Therefore, switching power converters are needed for driving many signal and lighting LED devices.
format	Undergraduates Project Papers
author	Mohd Taufik, Ab Rahman
author_facet	Mohd Taufik, Ab Rahman
author_sort	Mohd Taufik, Ab Rahman
title	Buck-boost power LED driver using PIC microcontroller
title_short	Buck-boost power LED driver using PIC microcontroller
title_full	Buck-boost power LED driver using PIC microcontroller
title_fullStr	Buck-boost power LED driver using PIC microcontroller
title_full_unstemmed	Buck-boost power LED driver using PIC microcontroller
title_sort	buck-boost power led driver using pic microcontroller
publishDate	2008
url	http://umpir.ump.edu.my/id/eprint/363/ http://umpir.ump.edu.my/id/eprint/363/ http://umpir.ump.edu.my/id/eprint/363/1/Mohd_Taufik_Ab_Rahman%281%29.pdf
first_indexed	2023-09-18T21:52:29Z
last_indexed	2023-09-18T21:52:29Z
_version_	1777413861609046016

Buck-boost power LED driver using PIC microcontroller

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