BuckBOOST电路原理分析uck变换器:也称降压式变换器,是一种输出电压小于输入电压的单管不隔离直流变换器。 图中,Q为开关管,其驱动电压一般为PWM(Pulse、width、modulation脉宽调制)信号,信号周期为Ts,则信号频率为f=1/Ts,导通时间为Ton,关断时间为Toff,则周期Ts=Ton+Toff,占空比Dy=、Ton/Ts。 Boost变换器:也称升压式变换器,是一种输出电压高于输入电压的单管不隔离直流变换器。 开关管Q也为PWM控制方式,但最大占空比Dy必须限制,不允许在Dy=1的状态下工作。电感Lf在输入侧,称为升压电感。Boost变换器也有CCM和DCM两种工作方式 Buck/Boost变换器:也称升降压式变换器,是一种输出电压既可低于也可高于输入电压的单管不隔离直流变换器,但其输出电压的极性与输入电压相反。Buck/Boost变换器可看做是Buck变换器和Bo
上传时间: 2021-10-18
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围绕电源控制芯片TOP266VG,采用Buck—Boost拓扑结构设计了一款某仪表专用开关电源,输出电压为12 V,输出电流为2.5 A。着重进行了变压器的设计与计算,并根据计算结果制作高频变压器和设计PCB板。测试结果表明:该仪表专用开关电源具有效率高、纹波小、负载调整率和电压调整率小。
标签: 开关电源
上传时间: 2021-10-27
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使用主流Buck降压芯片设计双轨电源Creating a Split-Rail Power Supply With a Wide Input Voltage Buck Regulator
标签: 电源
上传时间: 2021-11-07
上传用户: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.
标签: 隔离
上传时间: 2021-11-24
上传用户:kingwide
算法论文,可调节Buck电源大小,基于STM32
上传时间: 2021-11-27
上传用户:slq1234567890
ad9280_9708 ADDA模块硬件资料+PDF原理图+AD、PADS、CADENCE3中格式原理图库PCB封装库文件:原理图库: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封装库:Component Count : 17Component Name-----------------------------------------------3386P-1C0603DIP-2X20_2P54EC6P3L0603L1210L7373LED0603R0603R2512SMASMA_THVT_312X312SOP8SOT23-5SOT223SSOP28_0R65_10R2X7R8TSSOP28_0R65_9R7X4R4
上传时间: 2021-12-04
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PSIM9.0仿真,主电路为Buck电路,输入电压5V,输出3.3V,控制电路为电压滞环控制,模拟滞环部分采用软件自身电路。
上传时间: 2021-12-05
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本书共分为以下十二个单元,这些单元将专门介绍常用的DC/DC功率变换器拓扑,并给出目前在产品中用得最多的那些DC/DC功率变换器的工程设计指南。第一单元 DC-DC功率变换技术概论第二单元 基本DC-DC变换器 第三单元 隔离Buck变换器#1第四单元 隔离Buck变换器#2第五单元 隔离Buck变换器#3第六单元 隔离Boost变换器第七单元 隔离Buckboost变换器#1第八单元 隔离Buckboost变换器#2第九单元 其它DC-DC变换器第十单元 正激变换器的工程设计指南第十一单元 反激变换器的工程设计指南
标签: 开关电源
上传时间: 2021-12-09
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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.
上传时间: 2021-12-16
上传用户: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
标签: pw4203
上传时间: 2022-02-11
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