Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/76787
Title: Multi-string LED driver with current balancing
Authors: Qu, X 
Wong, SCL 
Tse, CK 
Issue Date: 16-May-2017
Source: US Patent 9,655,174 B2. Washington, DC: US Patent and Trademark Office, 2017. How to cite?
Abstract: The present invention discloses a current-source-output light-emitting-diode (LED) driver based on LCLC circuit to provide a constant output current regardless of variations in LED parameters. In the LCLC circuit, the number of additional capacitors is scalable with the number of LED strings for current balancing. Moreover, the input impedance of the improved LCLC circuit is designed to be resistive at the operating frequency to minimize reactive power. The conventional duty cycle control can easily incorporate zero-voltage-switching (ZVS).
URI: http://hdl.handle.net/10397/76787
Rights: Assignee: The Hong Kong Polytechnic University
Patent
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