[原创]Rohm BD9S400MUF－C汽车4A同步降压DC／DC转换器解决方案

Rohm公司的BD9S400MUF-C是用于汽车的2.7V-5.5V输入的同步降压DC/DC转换器,内置了低开态电阻的功率MOSFET,提供电流高达4A.SLLMTM控制在轻负载下有极好的效率,使得器件非常适合于降低待机功耗.由于开关频率高达2.2MHz,所以可采用小型电感.BD9S400MUF-C是电流模式控制的DC/DC转换器,具有高速瞬态响应.相位补偿也很容易实现.满足AEC-Q100资质, 具有可调整的软起动功能和电源良好输出.器件具有输入欠压锁住保护,短路保护,输出过压保护,过流保护和热关断保护.工作温度-40C +125C.主要用在汽车设备和其它电子设备.本文介绍了BD9S400MUF-C主要特性和主要指标,框图,应用电路以及多种参考电路,以及评估板REFRPT001-EVK-001主要特性,框图,电路图,材料清单和PCB设计图.

BD9S400MUF-C is a synchronous buck DC/DCConverter with built-in low On Resistance powerMOSFETs. It is capable of providing current up to 4A.

The SLLMTM control provides excellent efficiencycharacteristics in light-load conditions which make theproduct ideal for reducing standby power consumption ofequipment. Small inductor is applicable due to highswitching frequency of 2.2MHz. It is a current modecontrol DC/DC Converter and features high-speedtransient response. Phase compensation can also be seteasily.

It can also be synchronized to external pulse.

BD9S400MUF-C主要特性:

n SLLMTM (Simple Light Load Mode) Control

n AEC-Q100 Qualified

n Single Synchronous Buck DC/DC Converter

n Adjustable Soft Start Function

n Power Good Output..

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