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Design of Buck-Boost DC/DC Converter with Linearized PWM Signal

Author: LiuGang
Tutor: LaiXinQuan
School: Xi'an University of Electronic Science and Technology
Course: Circuits and Systems
Keywords: Analog Integrated Circuits DC / DC Buck-Boost Power Management Synchronous rectification
CLC: TM46
Type: Master's thesis
Year: 2006
Downloads: 34
Quote: 0
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Abstract


The paper design work from the research project \This paper first discusses the analysis of a variety of DC / DC converter topology , and explore how to achieve control of the DC / DC converter to maintain high conversion efficiency in a wide voltage range and wide load range . The basis of the design of a novel low-voltage efficient , lifting the pressure -type DC / DC converter XD8069 . This paper introduces a DC / DC converter XD8069 system design , key functional modules circuit design and simulation of the functionality and performance indicators . The design uses a novel design ideas of the pulse width modulation (PWM) signal changes linearly , linearization and high accuracy of the full duty cycle range of PWM regulator . Using synchronous rectification control the XD8069 circuit designs , eliminating the need for an external Schottky diode , save PCB board space and reduce power consumption . It also contains 3 modes of operation control programs, as well as buck, boost and buck three operating interval , so that the chip can maintain a high conversion efficiency in a wide range of voltage and under various load conditions . The entire circuit is based on Hynix 0.5μm CMOS process design , the use of software such as Cadence, Hspice circuit simulation and verification . The simulation results show that the circuit functionality and performance indicators to meet the design requirements .

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CLC: > Industrial Technology > Electrotechnical > Transformers, converters and reactors > Converter
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