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A Novel Boost Converter Based LED Driver Chip Targeting Mobile Applications


Abstract A novel integrated constant current LED driver design on a single chip is developed in this dissertation. The entire design consists of two sections. The first section is a DC-DC switching regulator (boost regulator) as the frontend power supply; the second section is the constant current LED driver system.

In the first section, a pulse width modulated (PWM) peak current mode boost regulator is utilized. The overall boost regulator system and its related sub-cells are explained. Among them, an original error amplifier design, a current sensing circuit and slope compensation circuit are presented.

In the second section – the focus of this dissertation – a highly accurate constant current LED driver system design is unveiled. The detailed d... (more)
Created Date 2016
Contributor Wang, Ge (Author) / Holbert, Keith E (Advisor) / Song, Hongjiang (Committee member) / Ayyanar, Raja (Committee member) / Yu, Hongbin (Committee member) / Arizona State University (Publisher)
Subject Electrical engineering / Accurate LED current / Boost regulator / LED driver
Type Doctoral Dissertation
Extent 130 pages
Language English
Copyright
Reuse Permissions All Rights Reserved
Note Doctoral Dissertation Electrical Engineering 2016
Collaborating Institutions Graduate College / ASU Library
Additional Formats MODS / OAI Dublin Core / RIS


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Description Dissertation/Thesis