采用一个电阻器阵列的全桥式放大用于在激励放大器中实现精准匹配
详情介绍
概览
产品详情
LT3471 双通道开关稳压器将两个 42V、1.3A 开关与能够在至地电位的条件下进行检测的误差放大器组合在了一起，从而提供了升压和负输出转换功能。低 VCESAT 双极型开关使该器件能够在占板面积很小的情况下提供高电流输出。LT3471的开关频率为 1.2MHz，因而允许采用纤巧、低成本且扁平的电感器和电容器。采用可编程软起动功能消除了启动期间的高浪涌电流，此时，一个外部 RC 用于设定电流斜坡速率。恒定频率电流模式 PWM 架构的运用产生了易于滤除的可预测低输出噪声。
工具及仿真模型
LTspice
LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.
To launch ready-to-run LTspice demonstration circuits for this part:
Step 1: Download and install LTspice on your computer.
Step 2: Click on the link in the section below to download a demonstration circuit.
Step 3: If LTspice does not automatically open after clicking the link below, you can instead run the simulation by right clicking on the link and selecting “Save Target As.” After saving the file to your computer, start LTspice and open the demonstration circuit by selecting ‘Open’ from the ‘File’ menu.
