Abstract
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. © 2016 IEEE.
| Original language | English |
|---|---|
| Article number | 7529120 |
| Pages (from-to) | 4716-4727 |
| Journal | IEEE Transactions on Power Electronics |
| Volume | 32 |
| Issue number | 6 |
| Online published | 2 Aug 2016 |
| DOIs | |
| Publication status | Published - Jun 2017 |
| Externally published | Yes |
Funding
This work was supported by the Hong Kong Research Grant Council under Theme-Based Research Project: T22-715/12N.
Research Keywords
- LED driver
- pulsewidth-modulated (PWM) dimming
- single-inductor multiple output (SIMO)
RGC Funding Information
- RGC-funded
Fingerprint
Dive into the research topics of 'An Off-line Single-Inductor Multiple-Output LED Driver with High Dimming Precision and Full Dimming Range'. Together they form a unique fingerprint.Cite this
- APA
- Author
- BIBTEX
- Harvard
- Standard
- RIS
- Vancouver