Abstract
A half-bridge (HB) resonant inverter for driving a backlight module with multiple cold cathode fluorescent lamps (CCFLs) is proposed. Conventionally, a backlight module driving inverter is designed to operate with a low-input DC voltage. Therefore, a buck converter is required to step down the high-output DC voltage of a power factor correction (PFC) pre-regulator. The circuit cost is high and the conversion efficiency is low. In this letter, a high-input-voltage HB resonant inverter with only one transformer is used to drive multiple lamps. Analysis and design considerations are discussed in detail. Simulations and experimental results are close to the theoretical prediction.
| Original language | English |
|---|---|
| Pages (from-to) | 533-542 |
| Number of pages | 10 |
| Journal | International Journal of Circuit Theory and Applications |
| Volume | 39 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - 2011 May |
Keywords
- LCD backlight module
- cold cathode fluorescent lamp
- half-bridge resonant inverter
- power factor correction
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Computer Science Applications
- Electrical and Electronic Engineering
- Applied Mathematics