Design of an LED sink driver using a switched-inductor and switched-capacitor buck-boost converter with high voltage gains
2nd International Conference on Smart Power and Internet Energy Systems, SPIES 2020, Bangkok, Tayland, 15 - 18 Eylül 2020, ss.33-38, (Tam Metin Bildiri)
- Yayın Türü: Bildiri / Tam Metin Bildiri
- Doi Numarası: 10.1109/spies48661.2020.9243052
- Basıldığı Şehir: Bangkok
- Basıldığı Ülke: Tayland
- Sayfa Sayıları: ss.33-38
- Anahtar Kelimeler: Buck-boost converters, Hybrid dc/dc converters, LED lighting applications, Switched capacitor circuits, Switched inductor circuits
- Maltepe Üniversitesi Adresli: Evet
Özet
A novel light emitting diode (LED) sink driver using a switched-inductor and switched capacitor (SISC) buck-boost converter is proposed in this paper. The proposed LED driver can achieve a high voltage gain by cascading the SI buck-boost block and the SC doubler block with a flying capacitor. The proposed negative SISC topology can provide not only high voltage gain but also flexible controllability of LED currents. The performance of the proposed SISC buck-boost converter was clarified by simulation program with integrated circuit emphasis (SPICE) simulations. In the performed simulations, the proposed SISC buck-boost converter can improve power efficiency about 6% from the conventional hybrid buck-boost converter when the duty factor D is 0.5 and the output power is 500mW. Furthermore, the feasibility of the proposed SISC topology was confirmed by breadboard experiments.