發(fā)布時間：2018-01-19 14:09

  本文關鍵詞： 電源 沖擊電流 快速熱插拔 門限電路　出處：《武漢大學》2017年碩士論文　論文類型：學位論文

【摘要】：電子信息時代,消費電子產品、物聯(lián)網智能家居、網絡通信平臺等電子設備對人們日常生活的影響越來越大。而這些電子設備的核心便是電源,電源為所有的系統(tǒng)電路提供一定功率的電能。隨著開關電源的面世,電源由傳統(tǒng)的高功耗、大體積逐漸發(fā)展成如今的輕小、低功耗、高效率。其中,電源的效率與安全穩(wěn)定性兩個特點備受廣大的電源開發(fā)者的關注。在通信系統(tǒng)中最常見的電源操作便是電源的熱插拔。而熱插拔引起的沖擊電流效應會對電源的安全穩(wěn)定性造成很大的影響,所以熱插拔一直是業(yè)內關注的主要問題。為此,全球范圍內以美信、德州儀器和亞德諾為代表的半導體公司都針對熱拔插的問題提出了自己的解決方案和相對應的控制器芯片。此外,出于電路成本以及實際系統(tǒng)電路的電源接口情況考慮,長短針法抑制沖擊電流電路和分立器件有源沖擊電流抑制電路都存在著一定的應用。本文在分析研究熱插拔沖擊電流問題的基礎上,探究了通信電路系統(tǒng)中熱插拔偶爾會導致緩慢啟動電路失效的問題。在快速熱插拔的時候,系統(tǒng)電路的后級儲能電容會反灌電流到前級的低阻抗回路,從而影響開關管柵極充放電電容的及時放電。此時單板快速熱插拔必然會導致未關斷的開關管無法正常進入緩慢啟動狀態(tài)。針對電路單板的快速熱插拔操作引起的電源緩慢啟動模塊失效問題,本文提出了采用門限電壓控制電路結合有限沖擊電流抑制電路的電路設計方案。系統(tǒng)電路設計主要包含輸入電源充放電模塊、上電電壓斜率控制模塊、門限電壓控制模塊與其他輔助設計電路模塊。在針對每個電路模塊進行理論分析之后,本文采用電源專業(yè)仿真軟件Saber進行系統(tǒng)電路的仿真驗證分析。不同于一般的電路仿真軟件,Saber是一款全球最先進的綜合系統(tǒng)化仿真軟件。仿真分析結果表明本次設計具備可行性而且其在電源熱插拔時的工作狀態(tài)基本與理論分析一致。在實際電路測試分析之前,本文對分立元器件的選型規(guī)范做了詳細的闡述并結合系統(tǒng)電路的設計需求進行了元器件選購。實際測試表明,在分立器件有源沖擊電流限制電路上加入門限控制電路可以很好的實現阻斷后級儲能元件反灌電流,從而解決單板快速熱插拔引起的緩慢啟動電路失效的問題�？傊�,系統(tǒng)電路實際測試良好,電路設計簡單且成本較低,在大型電路系統(tǒng)涉及到單板快速熱拔插的時候具有很好的應用價值。
[Abstract]:In the era of electronic information, consumer electronic products, Internet of things smart home, network communication platform and other electronic devices have more and more influence on people's daily life. And the core of these electronic devices is power supply. Power supply provides certain power for all system circuits. With the advent of switching power supply, power supply from traditional high power, large volume gradually developed into today's light, low power consumption, high efficiency. The efficiency and safety and stability of power supply have attracted the attention of the majority of power developers. The most common operation of power supply in communication system is the hot plug of power supply. The impact current effect caused by hot plug will affect the power supply. Safety and stability have a great impact. So hot swapping has always been a major concern in the industry. For this reason, the United States across the globe. The semiconductor companies represented by Texas Instruments and Adriano have put forward their own solutions and corresponding controller chips to the hot plug problem. Considering the cost of the circuit and the power interface of the actual system circuit. There are some applications in both the long-short needle current suppression circuit and the discrete device active impulse current suppression circuit. In this paper, the hot plug impulse current problem is analyzed and studied. This paper probes into the problem that the hot plug in the communication circuit system occasionally leads to the failure of the slow start circuit. At the time of fast hot swapping, the energy storage capacitor of the system circuit will reverse the current to the low impedance loop of the front stage. This will affect the timely discharge of the charging and discharging capacitance of the switch gate. At this time, the rapid hot swapping of the single board will inevitably lead to the unturned switch tube can not enter the slow start state normally. The fast hot swapping operation of the single board of the circuit will lead to the fast hot swapping operation of the circuit board. Failure of the power supply slow start module. In this paper, a circuit design scheme using threshold voltage control circuit combined with limited impulse current suppression circuit is proposed. The circuit design of the system mainly includes charge and discharge module of input power supply and control module of voltage slope. Threshold voltage control module and other auxiliary design circuit modules. After theoretical analysis for each circuit module. In this paper, the power professional simulation software Saber is used to verify and analyze the system circuit, which is different from the general circuit simulation software. Saber is one of the most advanced comprehensive and systematic simulation software in the world. The simulation results show that the design is feasible and its working state in hot plug out of power supply is basically consistent with the theoretical analysis. Before the road test analysis. In this paper, the specification of the type selection of discrete components is described in detail, and combined with the design requirements of the system circuit, the components are selected and purchased. The actual test shows that. Adding threshold control circuit to the active impulse current limiting circuit of discrete device can block the backflow current of energy storage element. In short, the system circuit is tested well, the circuit design is simple and the cost is low. It has a good application value when the large circuit system involves the single board rapid hot-plug.
【學位授予單位】：武漢大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TN86

【參考文獻】

相關期刊論文 前10條

1 蘇小麗;佃松宜;鄭萬里;;帶零電壓轉換軟開關的新型單相單級隔離式Cuk開關電源[J];電工技術學報;2016年22期

2 李文然;;空間低溫制冷控制器的緩啟動電路建模分析[J];中國空間科學技術;2016年04期

3 張志鵬;韓崇偉;楊剛;李鵬啟;曹雷;;熱插拔技術在現場可更換模塊中的應用研究[J];兵工自動化;2016年06期

4 張純亞;何林;章治國;;開關電源技術發(fā)展綜述[J];微電子學;2016年02期

5 李坤賀;盧崢;李廷凱;王亨勇;;基于LTC4364-2的熱插拔保護電路[J];兵工自動化;2016年04期

6 曹騰;呂鵬飛;;開關電源的發(fā)展及技術趨勢[J];電子制作;2016年07期

7 楊旭峰;韓闖;李彥斌;;關于開關電源變壓器變換效率優(yōu)化設計[J];計算機仿真;2015年10期

8 黃忠毅;付忠亮;葉雨;陳義;葉偉俊;;功率MOS管在鼓風機調速中的并聯(lián)應用[J];電子世界;2015年17期

9 李丹;胡曉光;;武器裝備緊湊型PCI總線測控系統(tǒng)熱插拔冗余容錯技術研究[J];兵工學報;2015年07期

10 周凱;那日沙;王旭東;;Saber在電力電子技術仿真中的應用[J];實驗技術與管理;2015年03期

，

本文編號：1444498