[原创]TI LM604x0系列36V 4A超小型同步降压转换器解决方案

TI公司的LM604x0系列是3.8V-36V 3A和4A超小型同步降压DC/DC转换器.该器件容易使用,为工业应用提供业界最好的效率.LM60430提供多达3A负载电流,而LM60440则是业界最小的4A降压转换器.器件具有低EMI和开关噪音,满足CISPR22 class 5标准,开关频率400kHz和1MHz,输出电压从1V到24V,所有负载下的功率转换高效率,峰值效率大于95%,10-mA, 12 VIN, 5 VOUT时的PFM效率为90%.工作结温–40C 到 +150C.工作静态电流25 μA.主要用在工业PC和CPU(PLC控制器),伺服驱动和AC驱动控制模块和医疗与仪表应用.本文介绍了LM604x0系列主要特性,功能框图,应用电路以及评估模块LM60440AQEVM主要特性,电路图,材料清单和PCB设计图.

The LM604x0 regulator is an easy-to-use,synchronous, step-down DC/DC converter that

delivers best-in-class efficiency for rugged industrialapplications. The LM60430 drives up to 3-A of loadcurrent, and the LM60440 is industrys smallest 4Astep-down converter.

The LM604x0 is available in an ultra-miniature WQFNpackage with wettable flanks and a standard QFNpin-out with a thermal pad to enhance thermalperformance. This enhanced QFN package featuresextremely small parasitic inductance and resistance,

enabling very high efficiency while minimizing switchnode ringing and dramatically reducing EMI.

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