Infineon TLS412xD0EPV50汽车应用OPTIREG转换器解决方案

Infineon公司的TLS412xD0EPV50是OPTIREG™转换器,2.8MHz 同步降压稳压器,特别设计用于汽车应用.器件PWM模式,电流具有2A,固定5V输出电压和反馈电压精度±1.5%.集成的功率级,软起动也性和集成的补偿网络降低了所需要的外接元件数量,因此降低成本和PCB板空间.宽输入范围和100%占空比操作模式使得器件适合用在汽车应用的电池启动方案.宽开关频率范围允许选择合适的线圈和电容.开关频率可以和外接时钟信号同步. 扩频调频能用来改善PWM工作时的EMI性能.PFM模式在轻负载时器件具有低电流消耗.TLS412xD0EPV50能检测到输出电压的欠压和过压条件,并以重置输出信号的方式来指示.过流和过载的检测避免了过电流,从而保护了短路条件下的器件.集成的内部热关断特性保护了器件免于过热.器件的输入电压范围从3.7V到35V,5V输出电压,超低电流损耗为31 μA.器件的工作温度为Tj = -40C到150C,绿色产品RoHS兼容,增强PG-TSDSO-14封装.主要用在车体,ADSA,导航,娱乐信息和远程信息系统.本文介绍了TLS412xD0EPVxx系列主要特性,框图,应用框图和演示板TLS412xD0EPVxx主要特性,电路图,材料清单和PCB设计图和装配图.

The OPTIREG™ switcher TLS4120D0EPV50 is a 2.8 MHz synchronous step down regulator especially designed forautomotive applications. The device has a current capability of 2 A, fixed 5 V output voltage and a feedbackvoltage accuracy of ±1.5% in PWM mode. The integrated power stages, soft-start feature and integratedcompensation network reduce the required amount of external components and thus system costs and

board space. The wide input voltage range and a 100% duty cycle operation mode make the device suitablefor battery cranking scenarios in automotive applications. The wide switching frequency range allows theselection of appropriate coils and capacitors. The switching frequency can be synchronized to an externalclock signal. Spread spectrum frequency modulation can be activated to improve the EMI performance in PWMoperation. The device offers low current consumption in PFM mode at light loads to optimize efficiency. TheTLS4120D0EPV50 can detect undervoltage and overvoltage conditions of the output voltage and indicates thisw...