Linear LTC3787大功率高效多相同步升压控制方案

Linear 公司的LTC3787是大功率高效多相同步升压控制器，效率高达97%，因而不需要散热器。LTC3787集成了两个N-沟功率MOSFET，两相工作降低了输入和输出电容以及电源所引起的噪音，输电电压从4.5V到38V，输出电压高达60V，输出电流可高达10A，可以配置成2/3/4/6/12相工作，主要用在工业，汽车，医疗和军用设备。本文介绍了LTC3787主要特性，方框图，2/3/4/6/12相工作配置图以及12-24V/10A两相同步升压转换器和高效四相单输出升压转换器等多种应用电路。

LTC3787: High Power Polyphase® Synchronous Boost Controller Eliminates Heat Sink with 97% Efficiency

The LTC®3787 is a high performance PolyPhase® single output synchronous boost converter controller that drives two N-channel power MOSFET stages out-of-phase. Multiphase operation reduces input and output capacitor requirements and allows the use of smaller inductors than the single-phase equivalent. Synchronous rectification in­creases efficiency, reduces power losses and eases thermal requirements, enabling high power boost applications.
..

查看全文