【应用】圣邦微同步升压DCDC SGM66099应用于工业场所的温度传感器，静态电流低至0.65μA，效率高达93%

时间： 2022-11-30 来源：世强

技术问答

在各种工业设备场所，我们常常需要定期对设备进行检查和维修。如果完全依靠人工检查维修，在一些噪音大、粉尘多、有干扰的恶劣环境中，员工不仅不能长时间监测设备运行数据，而且还无法及时发现设备因轴承磨损和不平衡造成的损坏，从而导致机械故障频繁发生。因此，我们通常用各种传感器设备来采集数据，代替人工检测，大大提高工作效率。

温度是一项很重要的检测指标，某客户主要做水利水电设备的温度传感器检测产品，温度的采集使用的是有带有探测头的NTC电阻，不是单一电阻采集，而是由多个电阻组成的温度检测电阻网络。

该产品采用锂电池供电，3.6V电压输出由DCDC升压到5V，在经过LDO降压到3V给运放和ADC供电。DCDC客户以前使用的型号是TPS61096A这一款，现在需要国产化。在5V的负载电流非常小，大概十几mA左右，要求静态电流在μA级别就可以。应用框图如图1所示。

图1.应用框图

根据客户的项目应用和参数要求，这里给客户推荐圣邦微的SGM66099系列产品，具体型号为SGM66099-5.0YTDI6G。这是一款低功耗DCDC，其在轻负荷条件下的高效性是实现电池寿命长的关键。典型应用框图如图2所示。

图2.典型应用框图

选用SGM66099作为该产品的升压DCDC，有以下优势：

（1）具有0.65μA超低静态电流，非常适用于低功耗产品；

（2）可支持3.6V至5V转换的300mA输出电流，满足客户项目应用；

（3）转换效率高，10mA至300mA负载的效率高达93%；

（4）输出电压有可调版本和固定版本，可调输出电压从2.5V到5.2V；

（5）-40℃至+85℃宽工作环境温度范围。

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器件选型发布时间 : 2022-01-13

纳芯微光储充系统解决方案

型号- NSI1200,CNSOPA9XXX,NCA854X,NSREF30,NSI1042,NSI6651,NSI68011,NSR24XX,NSI6611,NSI200D25,NSI8241,NSI82XX,NSI83085,NSI83086,NSIP83085,NSR2845,NSI6601M,NSI1050,NSI6801C,NSI1311,NSOPA9XXX,NSI1312,NSREF31XX,NSR2240X,CNSOPA8XXX,NSI8308X,NSI6601,NCA1042,NSI6801,NSI6602,NSM201X,NSI200,NSR7808,NSI300D05,NSD1025E,NSIP89XX,NLE8348,NSD7312,NSI1300,NSOPA8XXX,NSI13XX,NCA824X,NSD731X,NSIP31,NCA1042B,NSI200D05,NSI201X,NSR10320,NSI68515,NST235,NSIP1042,NSR31XXX,NSD1624,NSI050,NSD1025,NSI82XXC,NSREF30XX,NSA8244,NSR3X,NSA8245,NSR31XX,NSI131X,NSOPA90XX,NCA1051A,NCA3485,NSI6622,NCA8T245,NSR10430,NSI300D25,NSR28QXX,NSIP88XX,NSM8221

应用及方案 - 纳芯微电子 - 2023年4月 PDF 中文下载