Name
Title | ||
|---|---|---|
Design of a 20 MHz DC-DC Buck Converter with 84 Percent Efficiency for Portable Applications |
Abstract | ||
|---|---|---|
This paper presents the design and implementation of a 20 MHz voltage mode DC-DC buck converter with high power efficiency. The power efficiency has been improved by minimising the short circuit current in the driver stage. At the same time, a high gain, wide-band error amplifier topology with reduced current consumption, improves various dynamic performance parameters such as settling time, load and line regulations of the converter. A prototype of a 20 MHz DCDC buck converter is implemented and fabricated in 0.5 ?m Bi-CMOS process with a maximum of 600 mA load current driving capability in the input voltage range of 2.7-5.5 V which is suitable for single-cell lithiumion (Li-Ion) battery operated portable applications. A reasonably good settling time of 10 ?s is observed in the measured result with off-chip filter components of L=270 nH, C=1.6 ?F. The measured value of load regulation and line regulation are 1.6 mV/A and 3 mV/V respectively. A maximum of 84% power efficiency is achieved at 2.7 V to 1.2 V conversion. A very low form factor of 2.5 mm脳 2.5 mm脳 0.7 mm, has been achieved by using power power flip-chip packaging technology. |
Year | DOI | Venue |
|---|---|---|
2011 | 10.1109/VLSID.2011.37 | VLSI Design |
Keywords | Field | DocType |
portable applications,line regulation,v conversion,current driving capability,load regulation,good settling time,power efficiency,power power flip-chip packaging,mhz dc-dc buck converter,high power efficiency,buck converter,mhz dcdc buck converter,percent efficiency,form factor,topology,short circuit current,flip chip,logic gate,switches,chip,amplifiers,capacitors,logic gates | Electrical efficiency,Capacitor,Computer science,Settling time,Voltage,Line regulation,Electronic engineering,Load regulation,Electrical engineering,Buck converter,Amplifier | Conference |
Citations | PageRank | References |
4 | 0.83 | 5 |
Authors | ||
4 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Ashis Maity | 1 | 17 | 4.46 |
| Amit Patra | 2 | 97 | 25.22 |
| Norihisa Yamamura | 3 | 4 | 0.83 |
| Jonathan Knight | 4 | 73 | 6.20 |