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[原创]TI LMR33640SIMPLE SWITCHER稳压器解决方案

关键词:电源管理 SIMPLE SWITCHER DC/DC转换器 TI LMR33640SIMPLE

时间:2021-01-27 13:09:57       来源:中电网

TI公司的LMR33640 SIMPLE SWITCHER®稳压器是容易使用的同步降压DC/DC控制器,具有业界最高的效率.LMR33640从高达36V的输入驱动多达4A的负载电流,提供轻负载的高效率和输出精确度.此外还提供电源良好标识和精密赋能,以便在各种应用中容易和灵活使用.保护特性包括热关断,输入欠压锁住,逐个周期的电流限制,打嗝短路保护,集成和内部补偿消除了许多外接元件,使得PCB布局简单化.输入电压3.8V到36V,输出电压从1V到24V,峰值电流模式控制,结工作温度–40C 到 +125C.开关频率 400-kHz和1-MHz,峰值效率大于95%.主要用在马达驱动系统如机器人,AC逆变器,VF驱动和伺服驱动;工厂和建筑物自动化系统如PLC,HMI,HVAC系统,升降机主控板以及各种VIN DC/DC电源.本文介绍了LMR33640主要特性,功能框图,应用电路以及评估模块LMR33640EVM主要特性,电路图,材料清单和PCB设计图.

 

The LMR33640 SIMPLE SWITCHER® regulator is aneasy-to-use, synchronous, step-down DC/DCconverter that delivers best-in-class efficiency forrugged industrial applications. The LMR33640 drivesup to 4 A of load current from an input of up to 36 V.

The LMR33640 provides high light-load efficiency andoutput accuracy. Features such as a power-good flagand precision enable provide both flexible and easytouse solutions for a wide range of applications. TheLMR33640 automatically folds back frequency at light

load to improve efficiency. Protection features includethermal shutdown, input undervoltage lockout, cyclebycycle current limit, and hiccup short-circuitprotection. Integration and internal compensationeliminates many..

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