本文關(guān)鍵詞：一種電流模式PWM開關(guān)電源控制器的設(shè)計(jì)　出處：《大連理工大學(xué)》2008年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 開關(guān)電源 脈寬調(diào)制 電流型模式

【摘要】： 近年來,隨著我國(guó)經(jīng)濟(jì)的發(fā)展,計(jì)算機(jī)、通訊等行業(yè)對(duì)電源產(chǎn)品需求不斷的增長(zhǎng),電源控制器的研究已成為國(guó)內(nèi)功率電子學(xué)領(lǐng)域中的一大熱點(diǎn)。傳統(tǒng)的線性穩(wěn)定電源因?yàn)檩敵鼍鹊汀⑿实�、散熱問題大以及很難在一個(gè)通用的輸入電壓范圍內(nèi)工作,逐漸被體積小,重量輕,穩(wěn)定可靠的開關(guān)電源所取代。所以選擇以開關(guān)電源控制器芯片作為課題,不僅具有理論意義,同時(shí)也有很大的經(jīng)濟(jì)效益和社會(huì)效益。 基于雙極工藝,本文主要完成了一種電流型PWM控制器的設(shè)計(jì)。本文首先分析了脈沖寬度調(diào)制(Pulse-width modulation,PWM)控制芯片的工作原理。之后闡述了脈沖寬度調(diào)制和脈沖頻率調(diào)制的工作原理。對(duì)電壓反饋和電流反饋兩種控制模式進(jìn)行了原理闡述和特點(diǎn)對(duì)比,然后根據(jù)設(shè)計(jì)要求進(jìn)行了本文整體電路的設(shè)計(jì)。 根據(jù)功能需要設(shè)計(jì)了整體電路框圖,確定設(shè)計(jì)參數(shù)要求。接著分塊設(shè)計(jì)了芯片內(nèi)部各個(gè)功能模塊,包括高增益、寬帶寬的PWM比較器、帶隙基準(zhǔn)電壓源、外接定時(shí)電容的振蕩器、過欠壓保護(hù)電路、斜坡補(bǔ)償電路、溫度保護(hù)電路等。利用Cadence EDA設(shè)計(jì)工具,對(duì)各功能塊都進(jìn)行了仿真。仿真結(jié)果表明:這款開關(guān)電源芯片,工作溫度范圍0℃-150℃;工作頻率65KHz;最大功率18W,該控制器很好的滿足了設(shè)計(jì)要求,完成了該集成電路的前端設(shè)計(jì)。 整體電路采用華潤(rùn)晶芯1.8μm Bipolar工藝庫(kù)設(shè)計(jì),使用Cadence Spectre作電路仿真,使用Cadence Composer繪制版圖,介紹了實(shí)現(xiàn)電路的工藝流程和版圖層次。對(duì)版圖進(jìn)行DRC、LVS驗(yàn)證,完成了整體設(shè)計(jì)。
[Abstract]:In recent years, with the rapid development of China's economy, computer, communications and other industries to supply products growing demand, research on power supply controller has become a hotspot in the field of power electronics. The traditional linear stable power output because of low precision, low efficiency, large heat and hard work in a general the input voltage range is gradually, small volume, light weight, stable and reliable switching power supply replaced. So the study of switching power supply controller, not only has theoretical significance, but also has great economic and social benefits.
Based on the bipolar technology, this paper mainly completed the design of a current type PWM controller. This paper analyzes the pulse width modulation (Pulse-width modulation, PWM) the working principle of the control chip. After expounding the working principle of pulse width modulation and pulse frequency modulation. The principle and characteristics of comparison of the voltage feedback and current feedback two control mode, and the whole circuit are designed in this paper according to the design requirements.
According to the function need to design the whole circuit diagram, determine the design parameters. Then the function of each chip module design block, including high gain, broadband PWM comparator, bandgap voltage reference, the external timing capacitor oscillator, over-voltage protection circuit, slope compensation circuit, temperature protection circuit using. Cadence EDA design tools, through simulation of the various functional blocks. The simulation results show that the switching power supply chip, the working temperature range of 0 DEG -150 DEG 65KHz; working frequency; the maximum power 18W, the controller is good to meet the design requirements, completed the front-end design of the integrated circuit.
The design of the Huarun core 1.8 m Bipolar Technology Library using Cadence Spectre for the whole circuit, circuit simulation, using the Cadence Composer map, introduces the implementation process and layout level circuit. For DRC, LVS for layout verification, completion of the overall design.

【學(xué)位授予單位】：大連理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2008
【分類號(hào)】：TN86

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本文編號(hào)：1398173