TY - JOUR
T1 - An off-line single-inductor multiple-output LED driver with high dimming precision and full dimming range
AU - Li, Sinan
AU - Guo, Yue
AU - Tan, Siew-Chong
AU - Hui, S.Y.Ron
PY - 2017/6/30
Y1 - 2017/6/30
N2 - This paper presents a single-inductor multiple-output (SIMO) LED driver with precise dimming and full dimming range. Based on the coordination of a string-level scheme and a system-level dimming scheme, the proposed SIMO LED driver can overcome practical constraints of existing SIMO LED drivers such as limited dimming range and needs for high-current switches. The proposal can achieve dimming precision up to an accuracy of 0.8% and also full dimming range. It has the flexibility of using either phase-shift or synchronous pulsewidth-modulated (PWM) switching for dimming control. The proposed circuit and control operations have been practically verified with a 25-W off-line SIMO-driven LED system. Practical evaluations of its power quality and energy efficiency are also provided.
AB - This paper presents a single-inductor multiple-output (SIMO) LED driver with precise dimming and full dimming range. Based on the coordination of a string-level scheme and a system-level dimming scheme, the proposed SIMO LED driver can overcome practical constraints of existing SIMO LED drivers such as limited dimming range and needs for high-current switches. The proposal can achieve dimming precision up to an accuracy of 0.8% and also full dimming range. It has the flexibility of using either phase-shift or synchronous pulsewidth-modulated (PWM) switching for dimming control. The proposed circuit and control operations have been practically verified with a 25-W off-line SIMO-driven LED system. Practical evaluations of its power quality and energy efficiency are also provided.
UR - https://ieeexplore.ieee.org/abstract/document/7529120
U2 - 10.1109/TPEL.2016.2597237
DO - 10.1109/TPEL.2016.2597237
M3 - Article
SN - 0885-8993
VL - 32
SP - 4716
EP - 4727
JO - IEEE Transactions on Power Electronics
JF - IEEE Transactions on Power Electronics
IS - 6
ER -
