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PWM/PFM自动切换控制升压同步整流型DC/DC转换器CXSU63160高效稳定地输出最大1.0A的电流开关频率高达1.2MHz | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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目录7.相关产品 产品概述 返回TOP CXSU63160系列是内置0.2Ω的Nch驱动三级管,0.2Ω的Pch同步整流开关管的升压同步整流型DC/DC转换器。由于内置的三极管的导通阻抗很小，因此能高效,稳定地输出最大1.0A的电流。开关频率高达1.2MHz，因而能选择小型的电感，适用于有高度限制和需要节省空间的应用。通过MODE端子，能选择PWM控制和PWM/PFM自动切换控制。在PWM/PFM自动切换控制的场合下，负载电流小的时候工作于开关损失小的PFM控制模式,负载电流大的时候自动切换到PWM控制模式，实现了全负载领域的高效率。另外，内置了PWM控制和PFM控制平滑切换的电路，使得全负载领域内的输出电压纹波变得很小。在关断时，在输出端施加比输入电压高的电压的场合下，输入和输出处于绝缘的状态，此时可使用AC适配器并列来驱动。The CXSU63159/CXSU63160 series are synchronous step-up DC/DC converters with a 0.2Ω (TYP.) N-channel driver transistor and a synchronous 0.2Ω (TYP.) P-channel switching transistor built-in. A highly efficient and stable current can be supplied up to 1.0A by reducing ON resistance of the built-in transistors. With a high switching frequency of 1.2MHz, a small inductor is selectable making the series ideally suited for applications requiring low profile or space saving solutions. With the MODE pin, the series provides mode selection of PWM control or PFM/PWM automatic switching control. In the PWM/PFM automatic switching mode, the series switches from PWM to PFM to reduce switching loss when load current is small. When load current is large, the series switches automatically to the PWM mode so that high efficiency is achievable over a wide range of load conditions. The series also provides small output ripple from light to large loads by using the built-in circuit which enables the smooth transition between PWM and PFM. With a adaptor enable function of the CXSU63159 series, when a voltage higher than the input voltage is applied to the output, the input and the output become isolated making it possible for the IC to work in parallel with the likes of an AC adaptor. 产品特点 返回TOP
应用范围 返回TOP ●Digital audio equipment ●Digital still cameras / Camcorders ●Computer Mouses ●Multi-function power supplies 技术规格书（产品PDF) 返回TOP 需要详细的PDF规格书请扫一扫微信联系我们，还可以获得免费样品以及技术支持！ 产品封装图 返回TOP
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发表时间：2020-06-09浏览次数：149
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