本文關(guān)鍵詞： 直流降壓變換 峰值電流模 同步整流 高效率　出處：《西安電子科技大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：電能的利用極大的提高了人們的生活質(zhì)量,然而長期以來人們對電能的使用效率一直處在中等偏下的水平,造成能源的嚴(yán)重浪費。對提高電能利用效率的不斷追求促使了電源管理芯片的產(chǎn)生和發(fā)展。由于集成電路技術(shù)的飛速發(fā)展以功率MOSFET為代表的全控型器件得以出現(xiàn),促進(jìn)了電源管理設(shè)備向著高頻和中小化方向發(fā)展,為電源芯片的小型化提供了條件。較早出現(xiàn)的LDO線性穩(wěn)壓電源,雖然成本低、噪音小,但其體積較大,電能轉(zhuǎn)換效率不高。而開關(guān)型穩(wěn)壓電源,由于功率管工作在開關(guān)狀態(tài),只消耗很小的導(dǎo)通損耗和開關(guān)損耗,效率較高,并且隨著開關(guān)頻率的提高,轉(zhuǎn)換器的尺寸可以做的很小。鑒于這些優(yōu)點直流開關(guān)電源在目前的電源行業(yè)得到了廣泛的認(rèn)可和使用。本次設(shè)計的芯片采用了峰值電流模式,提高了其響應(yīng)速度。芯片集成了測試模塊,可以通過對芯片引腳加脈沖對其指標(biāo)進(jìn)行測試。論文分章節(jié)分別論述了開關(guān)電源的基本拓?fù)浣Y(jié)構(gòu),工作機理等。并安排章節(jié)重點的對芯片的振蕩器模塊、基準(zhǔn)電路模塊、以EA(誤差放大器)為核心的環(huán)路穩(wěn)定性補償網(wǎng)絡(luò)進(jìn)行了詳細(xì)的描述,由于半導(dǎo)體器件的性能參數(shù)會在一定的范圍內(nèi)變化,為此本芯片中的前兩個模塊分別加了Trim電路,保證了芯片整體性能的穩(wěn)定。本論文基于集成電路教育部重點實驗室的直流開關(guān)電源項目,設(shè)計的這款基于0.5μm CMOS工藝BUCK型DC-DC直流開關(guān)穩(wěn)壓電源。采用了Spectre仿真軟件對芯片的各個模塊電路以及核心電路進(jìn)行了有效的仿真,仿真結(jié)果顯示芯片的各項性能指標(biāo)均達(dá)到了設(shè)計的要求。
[Abstract]:The utilization of electric energy has greatly improved the quality of life of people. However, for a long time, the efficiency of using electric energy has been at a moderate and lower level. Because of the rapid development of integrated circuit technology, the full control devices, represented by power MOSFET, have emerged, and the continuous pursuit of improving the efficiency of power utilization has promoted the generation and development of power management chips. It promotes the development of power management equipment in the direction of high frequency and medium and small, and provides the condition for the miniaturization of power chip. Although the earlier linear stabilized power supply of LDO, although it has low cost and low noise, its volume is large. The power conversion efficiency is not high. But the switching power supply, because the power transistor works in the switching state, only consumes very little on and off loss, the efficiency is high, and with the increase of switching frequency, The size of the converter can be very small. In view of these advantages of DC switching power supply in the current power industry has been widely recognized and used. The response speed is improved. The chip integrates the test module and can be tested by adding pulse to the pin of the chip. The basic topology of the switching power supply is discussed in this paper. Working mechanism and so on. The oscillator module, the reference circuit module and the loop stability compensation network with EAA as the core are described in detail. Because the performance parameters of semiconductor devices will vary within a certain range, the first two modules in this chip are respectively added with Trim circuits. This paper is based on the DC switching power supply project of the key laboratory of the Ministry of Integrated Circuits Ministry of Education. The design is based on 0.5 渭 m CMOS process BUCK type DC-DC DC switching power supply. Each module circuit and core circuit of the chip are simulated effectively by Spectre simulation software. The simulation results show that the performance of the chip meets the requirements of the design.
【學(xué)位授予單位】：西安電子科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TM46

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本文編號：1503796