Off-line soft-switched LED driver based on an integrated bridgeless boost - half-bridge converter

Almeida, Pedro S.; Mello, A. L. C.; Braga, Henrique A. C.; Costa, Marco A. Dalla; Alonso, J.M.

doi:10.1109/ias.2013.6682539

Cited by 7 publications

(1 citation statement)

References 18 publications

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“…In order to reduce cost, size, and the complexity, the integrated stages and one stage LED drivers are proposed. Integrated stages employ two separate converters implemented with only one active power switch or to form a single-stage solution [5], [9], [10]. State-ofthe-art for a single stage LED driver has been published in [1], [11], [12].…”

Section: Introductionmentioning

confidence: 99%

Single stage switched capacitor LED driver with high power factor and reduced current ripple

Eloi

Mineiro

Santos

et al. 2015

2015 IEEE Applied Power Electronics Conference and Exposition (APEC)

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This paper presents a switched capacitor-based converter to drive high power light emitting diodes (LEDs). Unlike the traditional switched capacitor based one, the proposed converter uses an inductor to avoid the forced charging and discharging operation reducing stress current in circuit. The proposed converter provides inherent power factor correction (PFC) and the switched capacitors are used as isolation capacitors. The proposed converter also uses a LC filter to reduce the output current ripple through LED array instead using a bulk electrolytic capacitor. The basic description of the topology is presented and a laboratory prototype of 48 W has been implemented. The experimental results presented demonstrate the technical feasibility of the proposed converter applied as LED driver.

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