Name
Title | ||
|---|---|---|
Digital Buck Converter With Switching Loss Reduction Scheme for Light Load Efficiency Enhancement. |
Abstract | ||
|---|---|---|
In this brief, we present a digital pulsewidth modulation buck converter with a switching loss reduction scheme to improve conversion efficiency at light load conditions. The proposed switching loss reduction scheme combines power-stage voltage swing scaling, transistor width scaling, and controller voltage scaling to reduce the dynamic power dissipation of the system. The power-stage voltage swing scaling also reduces the inductor current ripple at light load conditions, which extends the available output current range in the continuous conduction mode (CCM). A duty ratio estimation mechanism is implemented to provide a modulated signal with the correct duty ratio to control the output voltage. Experimental results demonstrate a 38% conversion efficiency improvement at a 50- $\\mu \\text{A}$ output current. In addition, the proposed circuit achieves a 96% peak efficiency with an output current ranging from 20 $\\mu \\text{A}$ to 30 mA in the CCM operation. |
Year | DOI | Venue |
|---|---|---|
2017 | 10.1109/TVLSI.2016.2592537 | IEEE Trans. VLSI Syst. |
Keywords | Field | DocType |
Switching loss,Transistors,Inductors,Voltage control,Power transistors,Delays,Power generation | Energy conversion efficiency,Power semiconductor device,Control theory,Duty cycle,Computer science,Voltage,Inductor,Electronic engineering,Voltage regulation,Ripple,Buck converter | Journal |
Volume | Issue | ISSN |
25 | 2 | 1063-8210 |
Citations | PageRank | References |
0 | 0.34 | 6 |
Authors | ||
4 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Chung-Shiang Wu | 1 | 12 | 2.04 |
| Hui-Hsuan Lee | 2 | 7 | 1.94 |
| Po-Hung Chen | 3 | 65 | 11.24 |
| Wei Hwang | 4 | 0 | 0.34 |