原标题：安森美降压式调节器解决方案

　　CS51411演示板是一个允许CS5141X 系列， 此系列是1.0 A/3.3  V降压稳压器，运行在260千赫或520千赫。通过供给时钟信号的同步输入的开关频率可以同步到一个更高的频率。并驱动SHDNB输入低关闭转换器的输出，最大限度地减少了功耗。

　　基本特性：

　　The CS5141X products are 1.5A buck regulator ICs. These devices are fixed-  frequency operating at 260kHz and 520kHz. The regulators use the V2 control  architecture to provide unmatched transient response, the best overall  regulation and the simplest loop compensation for today’s high- speed logic.  These products accommodate input voltages from 4.5V to 40V.

　　The CS51411 and CS51413 contain synchronization circuitry.

　　方案描述：

　　The CS51411 demonstration board is a 1.0 A/3.3 V buck regulator running at  260 kHz (CS51411) or 520 kHz (CS51413). The switching frequency can be  synchronized to a higher frequency through feeding clock signals to the SYNC  input. Driving SHDNB input low shuts down the converter output and minimizes the  power consumption. The regulator has superior line and load regulation due to  the use of V2_ control. This control method also enhances the load transient  response.

　　Features

　　· V2 Control for Superior Line and Load Regulation

　　· Small Board Space Requiring Only 1.0 x 0.7 in.2

　　· Total of 11 Components Including IC

　　· Shutdown Mode Disables the Output and Reduces the Operating Current

　　· Frequency Synchronization to Higher Frequency

　　· 1.5 A Peak Current Protection which Folds Back 30% During Overload  Conditions

　　· Built-In Soft Start to Eliminate Any In-Rush Current

　　· High Energy Transfer Efficiency of 83% at 1.0 A Load

　　· Line Regulation Better Than 0.1%

　　· Load Regulation Better Than 0.4%

　　参考原理图：