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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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
本论文采用基础的元器件、集成电路来实现
上传时间: 2022-01-29
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The PW5300 is a current mode boost DC-DC converter. Its PWM circuitry with built-in 0.2Ω powerMOSFET make this regulator highly power efficient. The internal compensation network alsominimizes as much as 6 external component counts. The non-inverting input of error amplifierconnects to a 0.6V precision reference voltage and internal soft-start function can reduce the inrushcurrent. The PW5300 is available in the SOT23-6L package and provides space-saving PCB for theapplication fields
标签: pw5300
上传时间: 2022-02-11
上传用户:jiabin
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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The PW2053 is a high-efficiency monolithic synchronous buck regulator using a constantfrequency, current mode architecture. The device is available in an adjustable version. Supply currentwith no load is 40uA and drops to <1uA in shutdown. The 2.5V to 5.5V input voltage range makesthe PW2053 ideally suited for single Li-Ion battery powered applications. 100% duty cycle provideslow dropout operation, extending battery life in portable systems. PWM/PFM mode operationprovides very low output ripple voltage for noise sensitive applications. Switching frequency isinternally set at 1.2MHz, allowing the use of small surface mount inductors and capacitors. Lowoutput voltages are easily supported with the 0.6V feedback reference voltage
标签: pw2053
上传时间: 2022-02-14
上传用户:jason_vip1
能源短缺和环境恶化是人类共同面临的挑战。开发新型清洁能源是解决能源短缺和环境恶化的捷径,但是太阳能能源不连续和不稳定的缺点影响其单独使用的效果。为了解决这个问题,可以选择使用多种性质互补的能源联合供电,相互弥补彼此的不足,以达到连续稳定的电能输出。基于双输入直流变换器(Multipk-Input Converter,MC)的光电互补系统相对于风光互补系统而言,在太阳能功率充足时,可以选择将多余的能量进行并网,省去了蕃电池等储能设备,也可大大节约成本,简化控制:而且电网是全天候的,比纯新能源联合系统更加可靠。因此本文将对光电互补系统,研究其拓扑、能量管理和系统参数设计等等在隔离应用的中小功率场合,推挽变换器控制方便,结构简单,应用广泛传统的多输入推挽变换器结构复杂,成本高。通过分析MIC的生成方法,利用脉冲电压源 Pulsating Voltage Source Ce,PⅤSC或者脉冲电流源(Pulsating Curren Source Cell,PCSC)中联或者并联构成简单实用的一族多输入推挽变换器,详细分析了BUCK型PVSC串联构成的双输入推挽变换器的小信号模型和控制方式,为了能够提供交流输出,本文还详细分析了半桥逆变电路的控制方式,并推导出其数学控制模型通过分析系统的工作模式、能量管理策略和不同控制方式对系统的影响,阐叨基于双输入推挽变换器的光电互补系统的工作原理。并对系统软件涉及到的太阳能最大功率跟踪、光电互补控制和逆变控制等算法进行重点研究功率电路参数设计合理与否,直接影响着系统的性能和指标,其中推挽变压器和滤波器的参数设计尤为重要,为此专门给出了硬件参数设计步骤;然后,根据软件算法,设计了控制软件流程图来更清晰的表达软件控制的思想软件参数是影响系统鲁棒性和快速性的另一个关键因素,在硬件设计的基础上,对软件参数进行优化设计,并利用 Simulink软件对设计参数进行仿真分析和修正。然后采用TMS320F2809作为控制芯片,搭建了实验原理样机,并进行了相关验证实验
标签: 推挽变换器
上传时间: 2022-03-16
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以AT89S52单片机为控制核心,采用电容降压技术,Buck电路拓扑,PWM驱动模块和功率器件散热设计,通过高速的数据采集、主功率输入输出模块和控制模块,设计一种新型智能车载充电器.在充电过程中,通过负脉冲瞬间放电实现对铅酸蓄电池的再生修复,提高电池的有效容量,延长使用寿命.该充电器体积小、速度快、效率高、可靠性好.With AT89S52 single chip computer as the control core,a new type of intelligent car-carried charger was designed by using capacitance step-down technology,Buck circuit topology,PWM driving module and power device heat dissipation design,through high-speed data acquisition,main power input and output module and control module.In the charging process,the regeneration and repair of lead-acid batteries are realized by instantaneous discharge of negative pulse,which improves the effective capacity of batteries and prolongs their service life.The charger has the advantages of small size,fast speed,high efficiency and good reliability.
标签: 车载充电器
上传时间: 2022-03-27
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本设计使用已有的单片机器件,数字、模拟电子电路设计技术,设计一款基于STM32F103C8T6单片机的数控可调开关电源(王兆安,刘进军,电力电子技术第五版:北京机械工业出版社,2009)。输入的市电经一系列电路得到12V,5V和3.3V直流电压,这些电压分别给需要的电路供电。通过单片机输出PWM波,经BUCK电路输出电压电流数据,经ADC反馈采样电路反馈给单片机。按键控制调节电压电流大小,在液晶屏上实时显示。
上传时间: 2022-04-03
上传用户:zhaiyawei
为设计高效率、低损耗的PFC电路,本文基于UCC28019进行电路设计。以UCC28019输出的PWM波形来控制Boost升压斩波为核心电路,使电路中的电容交替地充放电、电感交替的储存和释放能量,最后实现在输入AC20V~24V电压情况下稳定输出DC38V。测试结果表明,系统实现效率为95%左右,电压调整率小于1%,电源功率因数0.99。交流输入电压为19.0-25.8 V时,输出直流电压稳定性较好,电感无明显啸叫且纹波小,具有一定的带负载能力和实用性。In order to design the PFC circuit with high efficiency and low loss,this paper designs the circuit based on UCC28019.The PWM waveform output by UCC28019 is used to control boost chopper as the core circuit,which alternately charges and discharges capacitors,stores and releases energy by inductors,and finally achieves stable output of DC38 V under the input voltage of AC20 V~24 V.The test results show that the system achieves about 95% efficiency,the voltage adjustment rate is less than 1%,the power factor is 0.99,and the AC input voltage is 19.0-25.8 V.The output DC voltage stability is good,the inductance has no obvious whistle and the ripple is small,so it has certain load capacity and practicability.
上传时间: 2022-04-03
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