Paper Info
Title
A Low Voltage, Low Ripple, on Chip, Dual Switch-Capacitor Based Hybrid DC-DC Converter
Abstract
Here we propose a low voltage low ripple dual switch- capacitor based hybrid DC-DC converter which is suitable for high dropout embedded regulation. In the proposed topology, along with a linear regulator two switching capacitors are used to store and recycle the charge for better power efficiency. The linear regulator is used to reduce the amount of output voltage ripple that comes from the switching capacitors. The output ripple noise is further reduced by introducing a synthesized counter ripple through the linear regulator. With this noise reduction technique, for an acceptable output ripple noise, the switching capacitors are reduced to a value which can be implemented on chip. The proposed converter circuit is designed in 0.18µ process for 3.3V to 1.25V conversion. With two switching capacitors of 150pF each, for 10mA load current and 50pF load capacitor, peak-peak output voltage ripple is only 45 mV and the achieved power efficiency is 64%
Year
DOI
Venue
2008
10.1109/VLSI.2008.59
VLSI Design
Keywords
Field
DocType
better power efficiency,low ripple dual switch,acceptable output ripple noise,peak-peak output voltage ripple,noise reduction technique,hybrid dc-dc converter,switching capacitor,dual switch-capacitor,linear regulator,output voltage ripple,output ripple noise,low ripple,low voltage,synthesized counter ripple,noise reduction,switched capacitor,power efficiency,low power electronics,chip
Boost converter,Capacitor,Linear regulator,Filter capacitor,Computer science,Voltage,Electronic engineering,Low voltage,Ripple,Low-dropout regulator
Conference
ISSN
ISBN
Citations 
1063-9667
0-7695-3083-4
6
PageRank 
References 
Authors
0.82
4
2
Name
Order
Citations
PageRank
Kaushik Bhattacharyya1133.55
Pradip Mandal28423.04