最佳化全積體電感型升壓DC-DC轉換器電路

Abstract

電感型直流升壓電路(Inductive DC-DC Boost Converter)被視為所有電子電路必備之電壓調整電路，此研究將針對液晶顯示器驅動電路系統(Liquid crystal display Driver System)做由電池系統提供之穩定2.8伏特至5伏特之升壓功能，雖相關電感型直流升壓電路已有相當成熟並且足夠的研究，但電感對於可攜式消費性產品追求體積極小化的宗旨而言卻占了過大的體積比例，而包含電感全積體化於晶片的電感型直流升壓電路相關研究卻非常稀少，因此本研究主要探討連同電感一併佈局於CMOS晶片當中的電感型直流升壓電路，並將電感、頻率及各元件所對電路之影響做最佳化的設計，並調整電感型直流升壓電路中控制電感充放電週期之開關元件之工作週期，以及印刷電路板在特定電感及電阻值底下產生最小面積之幾何模型之電感最佳化設計程序，並於國家晶片研究中心(CIC)委託台積電(TSMC)以0.35um製程實現設計電路，進而量測其整體電路表現，以跟傳統離散電感所組成之電感型直流升壓電路做體積、效率與實用性的優劣比較。

Boost converter is considered essential of all electronic circuits voltage regulator circuit, this research based on application of liquid crystal display driver system, boost the voltage from 2.8v to 5v, that supplied by the stable battery provide system, although associated inductance DC-DC boost circuit research already mature enough, but the inductor area consumption is too large for portable consumer products, which pursuit for minimizing the volume, while containing inductor fully integrated DC-DC boost converter circuit related research is very rare, so this study is investigate included inductor layout of the CMOS chip, include inductance, frequency and each element to make the best design of the circuit , and adjust the duty cycle of the switch gate signal to control the output voltage. And an optimization process of on-board inductor that generate a minimum area of geometry model that in assigned inductance and resistance, the designed circuits was tape out in CIC for TSMC 0.35um CMOS process technology to achieve design circuit, to measure the overall circuit performance, and comparison with traditional discrete inductive DC-DC boost converter, comparing the area and efficiency.