本文選題：同步整流　切入點(diǎn)：多路輸出　出處：《西安科技大學(xué)》2017年碩士論文

【摘要】：鋰電池具有單體輸出電壓范圍大、循環(huán)壽命長(zhǎng)、體積小等優(yōu)點(diǎn),被廣泛用于可隨身攜帶裝備的主要儲(chǔ)能裝置。為了滿足縮短充電時(shí)間、并行可控充電、保證電池安全、提高充電效率等要求,可以選用串聯(lián)鋰電池組并行充電系統(tǒng)。因?yàn)榉醇ぷ儞Q器具有結(jié)構(gòu)簡(jiǎn)單、體積小、電氣隔離等特點(diǎn),可以采用三路輸出級(jí)聯(lián)的反激變換器并行輸出的方式進(jìn)行電池充電。為了提高效率降低損耗,系統(tǒng)需采用同步整流技術(shù),即使用通態(tài)電阻低、輸入阻抗高的MOSFET來(lái)代替二極管進(jìn)行整流。為了驅(qū)動(dòng)輸出端級(jí)聯(lián)的三路反激變換器中三個(gè)整流MOSFET,設(shè)計(jì)了一款帶自舉驅(qū)動(dòng)的多路輸出同步整流芯片。所設(shè)計(jì)的驅(qū)動(dòng)芯片具有三路獨(dú)立的輸出,可以同時(shí)驅(qū)動(dòng)三路串行連接的同步整流管,并且可以實(shí)現(xiàn)自動(dòng)停充,每一路驅(qū)動(dòng)都具有自舉功能。驅(qū)動(dòng)芯片具有16個(gè)引腳,被分為五類,分別為供電電源引腳、實(shí)現(xiàn)自舉功能的引腳,檢測(cè)變壓器各個(gè)副邊繞組電壓的引腳、停充控制引腳和驅(qū)動(dòng)波形輸出引腳。驅(qū)動(dòng)芯片每一路都包括兩個(gè)比較器、一個(gè)PWM控制模塊和一個(gè)自舉控制模塊。停充控制引腳檢測(cè)電池的端電壓,當(dāng)電池端電壓達(dá)到額定電壓值時(shí),就關(guān)斷該路同步整流管驅(qū)動(dòng)波形的輸出,停止對(duì)該組電池進(jìn)行充電。為了使電源系統(tǒng)的電路組成簡(jiǎn)單,芯片的驅(qū)動(dòng)方式采用電壓自驅(qū)動(dòng)方式,通過(guò)檢測(cè)功率MOSFET漏-源電壓VDS來(lái)產(chǎn)生柵極驅(qū)動(dòng)信號(hào),該驅(qū)動(dòng)方式與原邊的開(kāi)關(guān)信號(hào)無(wú)關(guān)。對(duì)芯片的每個(gè)組成電路進(jìn)行了參數(shù)設(shè)計(jì)和功能仿真�；贑adence平臺(tái),采用CMOS工藝模型,使用Spectre對(duì)自舉驅(qū)動(dòng)式多路輸出同步整流芯片進(jìn)行系統(tǒng)級(jí)仿真驗(yàn)證,最后完成了芯片的版圖設(shè)計(jì),并通過(guò)DRC(Design Rule Check)和LVS(Layout Versus Schematics)檢查,驗(yàn)證了所設(shè)計(jì)的芯片版圖的正確性。
[Abstract]:Lithium battery has the advantages of large output voltage range of single cell, long cycle life, small volume and so on. It is widely used in main energy storage device of portable equipment. In order to improve the charging efficiency, we can choose the parallel charging system of series lithium battery pack, because the flyback converter has the characteristics of simple structure, small size, electrical isolation, etc. In order to improve the efficiency and reduce the loss, the synchronous rectifier technology is used in the system, even if the on-state resistance is low, the three-output cascaded flyback converter can be used to charge the battery in parallel. In order to drive three rectified MOSFETs in three-channel flyback converter with cascade output, a multi-output synchronous rectifier chip with bootstrap drive is designed. The chip has three independent outputs, It can drive synchronous rectifier tube with three serial connection at the same time, and can automatically stop charging. Each drive chip has bootstrap function. The drive chip has 16 pins, which are divided into five categories, respectively, power supply pin. The bootstrap pin, the pin that detects the voltage of each side winding of the transformer, the stop-charge control pin and the drive waveform output pin. Each drive chip consists of two comparators, A PWM control module and a bootstrap control module. The stop charge control pin detects the terminal voltage of the battery. When the terminal voltage of the battery reaches the rated voltage, the output of the synchronous rectifier drive waveform is turned off. In order to make the circuit composition of the power system simple, the drive mode of the chip adopts the voltage self-drive mode, and the gate drive signal is generated by detecting the power MOSFET drain source voltage VDS. The driving mode is independent of the switch signal of the original edge. The parameter design and functional simulation of each component circuit of the chip are carried out. Based on the Cadence platform, the CMOS process model is adopted. The system level simulation of bootstrap drive multiplex output synchronous rectifier chip is carried out by using Spectre. Finally, the layout design of the chip is completed, and the correctness of the chip layout is verified by DRC(Design Rule Checkand LVS(Layout Versus schematicscheck.
【學(xué)位授予單位】：西安科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TM461;TN402

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 宋華;;基于UC2845控制的反激同步整流變換器[J];電源世界;2017年01期

2 肖策中;;一種新穎的反激式自驅(qū)動(dòng)同步整流電源設(shè)計(jì)[J];科學(xué)咨詢(科技·管理);2016年10期

3 劉道民;劉健;;同步整流在串聯(lián)鋰電池組并行充電系統(tǒng)中的應(yīng)用[J];電子器件;2016年04期

4 馬濤;王衛(wèi)國(guó);孟淵;;一種基于同步整流的二次側(cè)同步調(diào)壓控制電路[J];電子設(shè)計(jì)工程;2016年13期

5 常思維;;計(jì)算機(jī)網(wǎng)絡(luò)通信技術(shù)及發(fā)展趨勢(shì)研究[J];科技致富向?qū)?2013年35期

6 胡志強(qiáng);王改云;王遠(yuǎn);;多路單端反激式開(kāi)關(guān)電源設(shè)計(jì)[J];現(xiàn)代電子技術(shù);2013年14期

7 李玉鋒;王欽若;;自舉式2ED020I12-F芯片在IGBT驅(qū)動(dòng)電路中的應(yīng)用[J];變頻器世界;2010年03期

8 王偉;李富華;謝衛(wèi)國(guó);;基于0.5μm BCD工藝的欠壓鎖存電路設(shè)計(jì)[J];現(xiàn)代電子技術(shù);2009年20期

9 文露;謝運(yùn)祥;;開(kāi)關(guān)電源多路輸出技術(shù)控制方法綜述[J];電源技術(shù)應(yīng)用;2009年06期

10 王劍;王宏華;袁曉玲;王偉炳;;集成功率驅(qū)動(dòng)電路IR2110應(yīng)用探討[J];機(jī)床與液壓;2008年07期

相關(guān)碩士學(xué)位論文 前3條

1 周t熝，

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