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voltage ripple
    OUTPUT VOLTAGE RIPPLE ANALYSIS AND FILTERING CAPACITANCE DETERMINATION OF THE PFC CIRCUITS USING BOOST
    采用Boost的PFC电路输出电压纹波分析及输出滤波电容值的确定
    From the simulated results,the stability of the designed monolithic Buck converter with different input voltage or different load is well,the line regulation is-40 dB and the load regulation is-60 dB.The average output voltage ripple of 75 mV and the power efficiency of 71% are achieved.
    模拟结果表明,对应于不同输入电压或不同负载,转换器系统工作稳定,输入调整率-40dB,输出调整率-60dB.输出电压纹波平均值可以控制在额定值75mV,转换效率71%.
    A Switched Capacitor DC DC Converter with Low Output Voltage Ripple
    一种低输出纹波的开关电容DC-DC变换器
    <1% output voltage ripple;
    输出电压纹波:小于1%;
    This paper deals with the unbalanced polyphase rectifier circuitS which may be encountered inpractice. The calculation Of the mean value of the rectifier voltage, the analysis of the rectifiervoltage waveform and the calculation of the voltage ripple factor are presented for unbalanced 3 -,6 - and 12 - phase bridge rectifier circuits separately.
    针对实际工作中可能遇到的非对称的3相、6相和12相桥式整流电路,讨论了整流电压平均值的计算、整流电压波形的分析及电压纹波因数的计算等问题。
    The output voltage ripple of single phase switching converter with unity power factor is analyzed respectively by power matching method and equivalent current source circuit method.
    分别采用功率匹配的方法和等效电流源的方法,对含功率因数校正( P F C) 环节的单位功率因数单相开关变换器的输出电压纹波进行了深入分析,得出对各种拓扑结构的单位功率因数单相开关变换器和各种控制方法均适用的统一表达式。
    It is concluded that an output current up to 1 A, an efficiency better than 75% and an output voltage ripple less than 20 mV has been achieved for this topology. Furthermore, it features high power density and is easy for integration.
    结果表明,该结构的输出电流可达 1 A 以上,效率优于 75 % ,输出电压纹波小于 20 m V,具有高功率密度、便于集成等优点。
    The arrangement with 50 mm working distance at the 10 mm×10 mm deflection field with 0.005 rad aperture and 5×10 -5 beam voltage ripple produces a total aberration disk of 0.03 μm before dynamic correction.
    以 0 .0 0 5rad半张角 ,5× 10 -5的高压纹波 ,5 0mm的像距 ,10mm× 10mm扫描场的边脚处 ,使动态校正前的总像差为 0 .0 3μm。
    Compared with traditional circuit,it has lower output voltage ripple,lower load adjustment rate and lower input voltage adjustment rate.
    与传统方法相比,该方法具有电压纹波小、负载调整率和电压调整率低的特点。
    It introduces the operational principle and main characteristics of NCP1205.NCP1205 is applied to the interleaving paralleled backward circuit to reduce the switch tube power loss and output voltage ripple,to enhense the circuit efficiency.
    文中介绍了NCP1205的工作原理和主要特点,并将其应用于交错并联反激电路中,大大减小了开关管的开通损耗,减小了输出电压纹波,提高了电路效率。
    System control mode is simple,using input current limiting technique to keep output voltage ripple below 50 mV,adopting multi-topology switch-capacitor array and gain hopping to obtain the average efficiency above 60% and peak efficiency above 85%.
    系统控制模式简单,采用输入限流使输出电压纹波控制在50 mV以内,采用多种模式的开关电容阵列以及增益跳变提高传输效率,得到60%以上的平均效率,85%以上的峰值效率.
    Analysis of DC Output Voltage Ripple in Electromagnetic Doubly Salient Brushless DC Generator
    电励磁双凸极无刷直流发电机电压纹波分析
    Then some new schemes are proposed in different aspects of the power supply in order to decrease the amplitude of output voltage ripple.
    论文从电源的系统结构与控制方面提出了比较新颖的三级级联和两级联动的纹波抑制措施:三级级联方案可以有效地降低输出低频纹波
    Steady-state analysis of the CRM PFC Boost converter is detailed. The relationship between the switch frequency and the input voltage and the input power are worked out, respectively. The stresses on each device and the output voltage ripple are analyzed.
    分析了临界导电模式功率因数校正Boost开关变换器的稳态特性,得出了开关频率与输入电压、输入功率的关系,对器件的应力和输出电压纹波进行了详细的分析,为电路的设计提供了依据。
    The design regions of inductor and capacitor are obtained according to the requirements of inner-intrinsic safety, output intrinsic safety and the desired output voltage ripple level within the input voltage and load ranges. The converter is also guaranteed to be in CCM in case of larger output power.
    以变换器在要求的输入电压和负载动态范围内同时满足内部本质安全要求、输出本质安全要求和期望的输出电压纹波要求作为限制条件,并确保在输出功率较大时处于连续导电模式,得出了变换器参数的设计范围。
    However, PSM also have some disadvantages, for example, the output voltage ripple is large at light load and the system maybe produce radio frequency noise.
    但PSM也具有不可避免的缺点:轻载时输出电压纹波较大,且易引入音频噪声。
    This converter can generate high precise output regulation with wide input voltage range of 2.0V to 5.5V. The input voltage may vary above and below the output voltage and the output will remain in regulation with low output voltage ripple.
    它采用0.5微米标准CMOS工艺制成,输入电压范围为2.0V~5.5V,且输入电压高于或低于输出电压时,输出电压都可保持稳定的低纹波输出,并能自动工作于升压或降压模式。 该电荷泵电路采用跳周期调制方式(PSM),有效的降低了芯片功耗,特别在轻负载情况下提高了系统的转换效率。
    XDJ6348 can switch to LDO work mode when the load current is less than 3mA in order to improve the work efficiency of the chip under low load current and maintain low output voltage ripple.
    当负载电流小于3mA时,芯片可切换到线性稳压器工作模式,以提高芯片在低负载电流时的工作效率并维持较低的输出电压纹波
    It is of a simple structure and high efficiency. Zero-output voltage ripple can be obtained under a certain condition.
    结果表明,输出电压、电流、占空比与′Cuk电路的输出电流、电压、占空比均满足对偶关系,且当电路满足一定条件时,输出电压纹波为零。
    The output ripple suppression methods of a soft switching combination DC DC converter, working in current controlled discrete pulse modulation mode, are proposed. The optimal control pulse sequence to minimize output ripple is firstly analysed. Then the relationship among the hysteresis width, switching frequency and the output voltage ripple is discussed.
    针对电流控制离散脉冲调制(CRΔM)方式下的一种软开关组合式DC-DC变换器,分析了使其输出电压纹波最小的最佳控制脉冲序列构成,讨论了滞环宽度与变换器工作频率、输出电压纹波的关系,给出了环宽的设计原则及仿真波形。
 

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