This paper presents the optimal combination design of the light-emitting diode (LED) array for the single-loop continuous-conduction-mode (CCM) buck-boost LED driver. Based on the Taylor series to describe the LED exponential function, the dc and small-signal transfer functions of LED arrays are derived for the system analysis of the employed single-loop CCM buck-boost LED driver. In this paper, the derived system transfer functions of the employed LED driver are verified with SIMPLIS® simulation results. The combination design of a 120-piece LED array for the employed LED driver to have power conversion with optimal efficiency is obtained and validated through the theoretical, simulation, and experimental results.
All Science Journal Classification (ASJC) codes
- Control and Systems Engineering
- Industrial and Manufacturing Engineering
- Electrical and Electronic Engineering