buckBOOST電路原理分析uck變換器:也稱降壓式變換器,是一種輸出電壓小于輸入電壓的單管不隔離直流變換器。 圖中,Q為開(kāi)關(guān)管,其驅(qū)動(dòng)電壓一般為PWM(Pulse、width、modulation脈寬調(diào)制)信號(hào),信號(hào)周期為T(mén)s,則信號(hào)頻率為f=1/Ts,導(dǎo)通時(shí)間為T(mén)on,關(guān)斷時(shí)間為T(mén)off,則周期Ts=Ton+Toff,占空比Dy=、Ton/Ts。 Boost變換器:也稱升壓式變換器,是一種輸出電壓高于輸入電壓的單管不隔離直流變換器。 開(kāi)關(guān)管Q也為PWM控制方式,但最大占空比Dy必須限制,不允許在Dy=1的狀態(tài)下工作。電感Lf在輸入側(cè),稱為升壓電感。Boost變換器也有CCM和DCM兩種工作方式 buck/Boost變換器:也稱升降壓式變換器,是一種輸出電壓既可低于也可高于輸入電壓的單管不隔離直流變換器,但其輸出電壓的極性與輸入電壓相反。buck/Boost變換器可看做是buck變換器和Bo
上傳時(shí)間: 2021-10-18
上傳用戶:
圍繞電源控制芯片TOP266VG,采用buck—Boost拓?fù)浣Y(jié)構(gòu)設(shè)計(jì)了一款某儀表專用開(kāi)關(guān)電源,輸出電壓為12 V,輸出電流為2.5 A。著重進(jìn)行了變壓器的設(shè)計(jì)與計(jì)算,并根據(jù)計(jì)算結(jié)果制作高頻變壓器和設(shè)計(jì)PCB板。測(cè)試結(jié)果表明:該儀表專用開(kāi)關(guān)電源具有效率高、紋波小、負(fù)載調(diào)整率和電壓調(diào)整率小。
標(biāo)簽: 開(kāi)關(guān)電源
上傳時(shí)間: 2021-10-27
上傳用戶:
使用主流buck降壓芯片設(shè)計(jì)雙軌電源Creating a Split-Rail Power Supply With a Wide Input Voltage buck Regulator
標(biāo)簽: 電源
上傳時(shí)間: 2021-11-07
上傳用戶:20125101110
ABSTRACTThe flyback power stage is a popular choice for single and multiple output dc-to-dc converters at powerlevels of 150 Watts or less. Without the output inductor required in buck derived topologies, such as theforward or push-pull converter, the component count and cost are reduced. This application note will reviewthe design procedure for the power stage and control electronics of a flyback converter. In these isolatedconverters, the error signal from the secondary still needs to cross the isolation boundary to achieveregulation. By using the UC3965 Precision Reference with Low Offset Error Amplifier on the secondaryside to drive an optocoupler and the UCC3809 Economy Primary Side Controller on the primary side, asimple and low cost 50 Watt isolated power supply is realized.
標(biāo)簽: 隔離
上傳時(shí)間: 2021-11-24
上傳用戶:kingwide
算法論文,可調(diào)節(jié)buck電源大小,基于STM32
標(biāo)簽: stm32 開(kāi)關(guān)電源
上傳時(shí)間: 2021-11-27
上傳用戶:slq1234567890
ad9280_9708 ADDA模塊硬件資料+PDF原理圖+AD、PADS、CADENCE3中格式原理圖庫(kù)PCB封裝庫(kù)文件:原理圖庫(kù):Library Component Count : 41Name Description----------------------------------------------------------------------------------------------------AD8065ARTAD9280ARSZRL AD9708ARUZB5S_0 C1608CT2012_0 CT2012_0_1INDUCTOR INDUCTOR_1 LED_0 LED GRN SGL 25MA 0603LQH32C_0 LQH32C_0_1 MC34063AD 1.5-A PEAK BOOST/buck/INVERTING SWITCHING REGULATORS, -40 to 85℃RES_ADJ_0 Single Turn Top Adjust, 3362PTL072 TLV1117-33 IC REG LDO 3.3V 1A SOT223ZDIODE_0 DIODE ZNR -- 0.2W 5.1V AEC-Q101 SOD523PCB封裝庫(kù):Component Count : 17Component Name-----------------------------------------------3386P-1C0603DIP-2X20_2P54EC6P3L0603L1210L7373LED0603R0603R2512SMASMA_THVT_312X312SOP8SOT23-5SOT223SSOP28_0R65_10R2X7R8TSSOP28_0R65_9R7X4R4
上傳時(shí)間: 2021-12-04
上傳用戶:
PSIM9.0仿真,主電路為buck電路,輸入電壓5V,輸出3.3V,控制電路為電壓滯環(huán)控制,模擬滯環(huán)部分采用軟件自身電路。
上傳時(shí)間: 2021-12-05
上傳用戶:
本書(shū)共分為以下十二個(gè)單元,這些單元將專門(mén)介紹常用的DC/DC功率變換器拓?fù)洌⒔o出目前在產(chǎn)品中用得最多的那些DC/DC功率變換器的工程設(shè)計(jì)指南。第一單元 DC-DC功率變換技術(shù)概論第二單元 基本DC-DC變換器 第三單元 隔離buck變換器#1第四單元 隔離buck變換器#2第五單元 隔離buck變換器#3第六單元 隔離Boost變換器第七單元 隔離buckboost變換器#1第八單元 隔離buckboost變換器#2第九單元 其它DC-DC變換器第十單元 正激變換器的工程設(shè)計(jì)指南第十一單元 反激變換器的工程設(shè)計(jì)指南
標(biāo)簽: 開(kāi)關(guān)電源
上傳時(shí)間: 2021-12-09
上傳用戶:
This Section covers the design of power transformers used in buck-derived topologies: forward converter, bridge, half-bridge, and full-wave centertap. Flyback transformers (actually coupled inductors) are covered in a later Section. For more specialized applications, the principles discussed herein will generally apply.
上傳時(shí)間: 2021-12-16
上傳用戶:fliang
PW4203 is a 4.5-22V input, 2A multi-cell synchronous buck Li-Ion battery charger, suitable forportable application. Select pin is convenient for multi-cell charging. 800 kHz synchronous buckregulator integrates of 22V rating FETs with ultra low on- resistance to achieve high efficiency andsimple circuit design.The PW4203 is available in an 8-pin SOP package, provides a very compact system solution andgood thermal conductance
標(biāo)簽: pw4203
上傳時(shí)間: 2022-02-11
上傳用戶:
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