[原创]Linear LTM4620高效多相100A降压电源解决方案

Linear公司的LTM4620是完整的双路13A输出开关模式DC/DC转换器,集成了开关控制器,功率FET,电感和所有支持元件.输入电压4.5V-16V,输出电压0.6V-2.5V,多个应用时输出电流高达100A,可调开关频率,频率同步,过流保护,内部温度检测二极管输出,输出过压保护,主要用在通信和网络设备,存储器和ATCA卡,工业设备.本文介绍了LTM4620主要特性,简化框图和多种应用电路,00A多相演示板1780A-C主要特性,电路图,材料清单和PCB元件布局图.

The LTM®4620 is a complete dual 13A output switching mode DC/DC power supply. Included in the package are the switching controller, power FETs, inductors, and all supporting components. Operating from an input voltage range of 4.5V to 16V, the LTM4620 supports two outputs each with an output voltage range of 0.6V to 2.5V, set by a single external resistor. Its high efficiency design delivers up to 13A continuous current for each output. Only a few input and output capacitors are needed.

The device supports frequency synchronization, multiphase operation, Burst Mode operation and output voltage tracking for supply rail sequencing and has an onboard temperature diode for device temperature monitoring. High switching frequency and a current mode architecture enable a very fast transient response to line and load changes without sacrificing stability.
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