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This paper presents a high-efficiency PWM DC-DC buck converter with a novel discontinuous-conduction mode (DCM) control under light-load condition. It is designed by using TSMC 1.8/3.3 V 0.18 μm CMOS technology. The proposed PWM buck converter with DCM operation not only can reach high efficiency in heavy-load (over 95% at 100 mA loading), but also has great improvement in light-load efficiency (36.14% higher than the conventional PWM converter at 10 mA loading) without using any PFM techniques. The output accuracy and the output ripples are better than PFM converters under light-load, and as good as a normal PWM converter under heavy-load. The proposed PWM converter is designed at 1.8 V supply and IV output voltage, and the maximum output power is 500 mW.
Published in:
Circuits and Systems (ISCAS), 2011 IEEE International Symposium on
Date of Conference: 15-18 May 2011
- Page(s):
- 237 - 240
- ISSN :
- 0271-4302
- E-ISBN :
- 978-1-4244-9472-9
- Print ISBN:
- 978-1-4244-9473-6
- INSPEC Accession Number:
- 12522864
- Conference Location :
- Rio de Janeiro
- Digital Object Identifier :
- 10.1109/ISCAS.2011.5937545
- Product Type:
- Conference Publications
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