Intersil ISL8225M 双15A,单30A电流输出稳压器参考设计方案
Intersil公司的ISL8225M是一款全密封降压开关稳压功率器件，可以分别输出2路15A电流或单独1路30A电流，最高达到100W输出。外围电路仅需要几个器件就可以实现高密度、高可靠性的高性能电源解决方案。通过自动电流共享和相交差允许6个模块并连输出能力可达180A，输出电压精度为1.5%，差动远程电压传感和快速瞬态响应实现高性能的功率系统。为增强系统的可靠性，内建过压、过流和过温保护。本文首先介绍芯片的简介、特性、内部框图及应用领域，并给出相应设计方案的设计原理图、元器件列表及PCB元件布局图。
The ISL8225M is a fully-encapsulated step-down switching power supply that can deliver up to 100W output power from a small 17mm square PCB footprint. The two 15A outputs may be used independently or combined to deliver a single 30A output. Designing a high-performance board-mounted power supply has never been simpler -- only a few external components are needed to create a very dense and reliable power solution.
Automatic current sharing and phase interleaving allow up to six modules to be paralleled for 180A output capability. 1.5% output voltage accuracy, differential remote voltage sensing and fast transient response create a very high-performance power system. Built-in output over-voltage, over-current and over-temperature protection enhance system reliability.
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