Home / Regular Issue / JTAS Vol. 25 (S) Jan. 2017 / JST-S0078-2016

 

A Single-stage LED Driver with Voltage Doubler Rectifier

Nurul Asikin, Zawawi, Shahid Iqbal and Mohamad Kamarol, Mohd Jamil

Pertanika Journal of Tropical Agricultural Science, Volume 25, Issue S, January 2017

Keywords: LED driver, boost circuit, LLC, power factor correction, street lighting, voltage doubler

Published on: 09 May 2017

In this paper, a configuration of a single-stage AC-DC converter and a high voltage resonant controller IC L6598 for LED street light driver is discussed. The converter is obtained by integrating two boost circuits and a half-bridge LLC resonant circuit. A voltage double rectifier circuit is adopted as output to lower the voltage stress on transformer and the associated core. The two boost circuits work in boundary conduction mode (BCM) to achieve the power factor correction (PFC). The converter works in soft-switching mode allowing the power switches to operate in zero-voltage-switching (ZVS) and the output diodes to operate in zero-current-switching (ZCS). This reduces the switching losses and enhances the efficiency. The converter features lower voltage stress on the power switches and the bus voltage is reduced to slightly higher than the peak input voltage. Therefore, the converter can perform well under high-input-voltage. Here, the DC bus and the output filter capacitances are greatly reduced. So, electrolytic capacitor-less converter can be realized for a long lifetime LED driver. Simulation results from PSpice are presented for a 100-W prototype.

ISSN 1511-3701

e-ISSN 2231-8542

Article ID

JST-S0078-2016

Download Full Article PDF

Share this article

Recent Articles