TPS54291

• 产品介绍

TPS54291  4.5V 到 18V 输入、1.5/2.5A、600kHz 双路输出同步降压转换器

说明

TPS54290/1/2 is a dual output fully synchronous buck converter capable of supporting applications with a minimal number of external components.TPS54290/1/2是一个双重输出完全同步降压转换器能够支撑的应用与外部组件的最小数量。It operates from a 4.5 V to 18 V input supply voltage, and supports output voltages as low as 0.8 V and as high as 90% of the input voltage.它的运行方式从4.5 V到18 V输入电源电压,并支持的输出电压低0.8 V,高达90%的输入电压。

Both high-side and low-side MOSFETs are integrated to provide fully synchronous conversion with higher efficiency.高端和low-side都提供充分的mosfet集成同步转换效率较高。Channel1 can provide up to 1.5 A of continuous current, meanwhile, Channel2 supports up to 2.5 A.Channel1可以提供多达1.5的一个Channel2连续电流,与此同时,支持多达250。

Current mode control simplifies the compensation.电流模式控制简化了补偿。The external compensation adds flexibility for the user to choose different type of output capacitors.增加灵活性的外部补偿为用户选择不同类型的输出电容。

180° out-of-phase operation reduces the ripple current through the input capacitor, providing the benefit of reducing input capacitance, alleviating EMI and increasing capacitor life.运行180°é™ä½Žäº†å¼‚相纹波电流通过输入电容,提供的利益,减少输入电容,缓解EMI和增加电容器的生活。