非隔离AC-DC分(fēn)两种,一种是線(xiàn)性電(diàn)源,一种是BUCK電(diàn)路;主要特性是输入参数、输出参数、保护特性等等。输入参数主要是输入電(diàn)压参数,一般都能(néng)够做到全压范围内的输入電(diàn)压范围。输出参数主要是输出功率,输出電(diàn)压;输出功率一般来说線(xiàn)性结构的比较小(xiǎo),只有(yǒu)100mW级别,BUCK型结构的可(kě)以做到10W左右;输出電(diàn)压一般都是可(kě)调的,但是要注意最高输出電(diàn)压。保护特性这块主要是过压保护,过流保护,过温保护等等。

線(xiàn)性電(diàn)源结构的器件我们可(kě)以把它看成是一个高压的LDO,将AC電(diàn)压通过全桥電(diàn)路整流,然后输出到芯片内部,靠芯片内部的線(xiàn)性電(diàn)路将電(diàn)压降到需要的低压,满足10mA以下负载需求。

Buck相当于初级侧稳压器,在没有(yǒu)光耦的情况下提供精(jīng)确的恒压(CV)调节;它支持Buck、Buck-Boost、Boost和反激拓扑;典型的应用(yòng)包括家用(yòng)電(diàn)器、备用(yòng)電(diàn)源和工(gōng)业控制等;MPS方案目前功率支持10W以内。

选型表下载
产(chǎn)品名(míng)称Pout (max) (W)Vac (min) (V)Vac (max) (V)Typefsw (max) (kHz)Control MethodIout (DCM) (max) (mA)Iout (CCM) (max) (mA)No-Load Pout (max) (mW)Isw Limit (mA)Vfb (V)Vout (min) (V)Vout (max) (V)Vbr (V)Rds(on) (Ω)Iregulator (mA)Ileak (µA)Package
MP100L0.485305Linear Regulator      1.2351.5157009.5  SOIC8E
MP1030.885305LinearController      1.2351.515700   SOIC8E
MP150220265Buck Regulator56On-Off1202001502902.5  500303.510SOIC-8,TSOT23-5
MP158220265Buck Regulator56On-Off4070301012.5  500303.510SOIC-8,TSOT23-5
MP171220305Buck Regulator83On-Off4060301002.5  700404.110SOIC-8,TSOT23-5
MP163A220265Buck Regulator On-Off  302102.5  700164.110SOIC-16,SOIC8-7B
MP155320265Buck Regulator56On-Off1302201002902.5  500203.510SOIC-8,TSOT23-5
MP156320265Buck Regulator56On-Off130220302902.5  500203.510SOIC-8,TSOT23-5
MP172320305Buck Regulator83On-Off80150302002.5  700304.110SOIC-8,TSOT23-5
MP163B320265Buck Regulator On-Off  304202.5  700144.110SOIC-16,SOIC8-7B
MP173420305Buck Regulator83On-Off180300304002.5  700204.110SOIC-8,TSOT23-5
MP163C420265Buck Regulator On-Off  306602.5  70013.54.110SOIC-16,SOIC8-7B
MP174A520305Buck Regulator83On-Off250400306602.55  70013.54.110SOIC-8,TSOT23-5
MP157620265Buck Regulator64On-Off2253601006402.5  500103.510SOIC-8,TSOT23-5
MP1751085265Buck Regulator83On-Off 60030    7004.5  SOIC-8
数据手册
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