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可替换MPS MP2451的高压DCDC芯片FS2451助力智能电表设计40V0.5A降压IC
2022-04-21 23:50:00 【深圳市泛海微电子有限公司】
在智能电表供电电路设计时,一般需要一颗降压DCDC将12V转为5V给后级供电。之前不少厂家会选mps的mp2451,但随着国产化和低成本需求增多,急需一款高性价比替换物料。本文从电性能参数、封装和应用等方面介绍FS2459替换MPS2451。以下为两者电性能参数对比:
1、 在输入输出电压电流方面,泛海微的BUCK DCDC FS2451拥有更高的输入电压40V,相比MP2451,保证芯片留有足够余量。
2、 在静态功耗方面,MP2451的静态电流典型值为130uA,而 FS2451表现更出色,仅有14uA,更适合低功耗应用;
3、 FS2451属于同步降压DCDC,相比非同步降压DCDC MP2451而言,效率更高;
4、 在产品可靠性方面,MP2451内置多种保护功能,如过流、短路、过温保护,而 FS2451除以上保护功能外,还拥有输出过压保护,两者的工作温度(节温)也都在-40~125℃,有效保证芯片可靠性。
FS2451和MP2451封装尺寸相同的是SOT23-6,并且pin脚定义完全相同,在外围电路设计时,由于 FS2451是异步降压DCDC,而MP2451属于非同步。
版权声明
本文为[深圳市泛海微电子有限公司]所创,转载请带上原文链接,感谢
https://szmcu.blog.csdn.net/article/details/124334850
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