摘要：当您面对产生比可用电源电压更高的稳定电压任务时,可以考虑升压稳压器.虽然升压转换器在理论上能产生比其输入更高的几乎任何电压,但实际的考虑把输出限制为对其施加的电压的大约8倍.

摘要：对于便携式电源应用而言，要充分利用高级电池技术体积小、能量密度大的优点，就必须在整个电池放电电压范围内实现高效工作。这对于要求3．3V总线的锂离子电池供电系统而言是个设计难题。尽管标准降压转换器在将4．2．3，0V锂离子电池降至1．8V等低输出电压时具有很高的转换效率，而标准升压转换器在将锂离子电池转换至5V等更高输出电压时也有很高的转换效率，

摘要：Diodes公司（Diodes Incorporated）针对以单芯锂离子电池供电的智能手机,推出1.9W D类音频放大器PAM8905,适合以低供电电压提供高声压级水平输出的音频系统。新产品通过内置的升压转换器产生输出级的电压轨,并同时在电池电压低的情况下,利用电池跟踪自动增益控制功能来调节增益及限制电池的电流,有效延长电池寿命。

摘要：研诺逻辑科技有限公司推出AAT1282 2A闪光发光LED驱动器芯片，它使白色发光二极管可提供高亮度照明。新款器件将1个高频升压转换器与固定输入电流限制、双输出稳流槽、12C控制集成在一起，采用1个超级电容提供所需的高峰值电流，为带有分辨率可达5M或更高拍照功能的手机提供高亮度闪光，同时保护电池。这款新型驱动器芯片配备了内置温度管理系统，

摘要：研诺逻辑推出AAT1271／2双通道升压转换器，以每个750mA的电流支持两个WLED或者以1．5A的电流支持一个WLED，采用紧凑的3×3mmTDFN封装。两种器件针对为移动系统供电的单节锂电池而设计，可在217V到5．5V的输入电压范围内运行。使用2MHz开关频率，通过允许使用较小的外部电感器和电容器来帮助减少系统占板面积，采用1μH的电感器就能获得高达85％的效率。

摘要：德州仪器（TI）推出一款具有集成型升压转换器的2W单声道D类音频放大器，其可在整个锂离子电池生命周期内实现比同类竞争器件高36％的稳定音量。该高效率TPA2015D1与性能最接近的同类竞争放大器相比。可实现高2倍的电池使用寿命，其采用紧凑型2mm×2mmWCSP封装，可充分满足智能电话、笔记本、便携式导航设备、便携式扩展基座以及便携式DVD播放器等空间有限的应用需求。此外，该放大器还采用电池监控自动增益控制（AGC）与SpeakerGuard技术，可避免低电池电压下的过早关断，并防止消波，从而可保护扬声器。

摘要：电源管理的集成电路开发商研诺逻辑科技有限公司（Analogic）最近宣布其高电流白光发光二极管（WLED）闪光灯驱动器系列又增加两名新成员。产品编号为AAT1271和AAT1272的双通道升压转换器，以每个高达750mA的电流支持两个WLED或者以1．5A的电流支持一个WLED，且均采用紧凑的3mm×3mmTDFN封装。

摘要：Maxim推出双输出DC-DC转换器MAX5072，内部集成了高边n沟道MOSFET。MAX5072是为满足xDSL和ADSL2+调制解调器电源的低成本、高性能以及高集成度要求而设计的。该器件具有以下四种功能：两个带有高边MOSFET的DC-DC转换器、带手动复位的上电复位功能以及“输入耗尽”输出，该输出在输入电压降至低于预设值时置低。输入电压范围为4．5V至5．5V或5．5V至23V，可使用稳压要求宽松的墙上适配器电源。两路输出可分别提供1A和2A电流，并且每路输出都可配置成降压或升压转换器。

摘要：An analytic closed-form based loop compensator for direct current-direct current (DC-DC) buckboost converter in discontinuous conduction with peak current-mode control is proposed to increase efficiency of the desired process through systemization. As a result, the process saves a lot of computation time that can be translated into design cost savings. Finally, the output voltage regulation in the presence of audio susceptibility and output impedance is shown for verifying.

摘要：The solar energy conversion system is very interesting alternative on supplement the electric system generation, due to the persistent cost reduction of the overall system and cleaner power generation. To obtain a stable voltage from an input supply (PV cells) that is higher and lower than the output, a high efficiency and minimum ripple DC-DC converter required in the system for residential power production. Buck-boost converters make it possible to efficiently convert a DC voltage to either a lower or higher voltages. Buck-boost converters are especially useful for PV maximum power tracking purposes, where the objective is to draw maximum possible power from solar panels at all times, regardless of the load. This paper analyzes and describes step by step the process of designing, and simulation of high efficiency low ripple voltage buck-boost DC-DC converter for the photovoltaic solar conversion system applicable to a (typical) single family home based on battery-based systems. The input voltage can typically change from (20 V) initially, down to (5 V), and provide a regulated voltage within the range of the battery (12 V). PLECS simulation results provide strong evidences about the high efficiency, minimum ripple voltage, high accuracy, and the usefulness of the system of the proposed converter when applied to either residential or solar home applications.