A novel approach to efficient inrush current limitation for LED power applications

Conference: PCIM Europe 2014 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
05/20/2014 - 05/22/2014 at Nürnberg, Deutschland

Proceedings: PCIM Europe 2014

Pages: 8Language: englishTyp: PDF

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Tech, Hendrik; Leber, Dirk (Systemtechnik LEBER GmbH & Co. KG, Germany)
Schwarzmeier, Andre (Institute for Electronics Engineering, University of Erlangen-Nuremberg, Germany)

The increasing number of cost-efficient power supplies without internal limitation of the inrush current in the field of LED-lighting necessitates inrush current limiting measures within the energy distribution system. Common circuits were analyzed with respect to their functionality, fail-safety and their compliance with regulatory requirements, manufacturing costs and energy efficiency. This paper presents the development and validation of a novel circuitry for inrush current limitation, ideally fulfilling the requirements concerning an increased repetition rate of the protection function, intrinsic thermal safety as well as a cost-effective implementation for a maximum coverage of price-sensitive markets. In contrast to existing solutions this approach results in a far better cost-to-benefit-ratio.