【选型】60W汽车电子水泵中MOSFET推荐P105LF4QNK,品质高、导通损耗低
随着汽车电子化的发展,汽车上的电动结构越来越多,小功率的电机执行器可以用全集成的方案进行驱动,大功率的电机驱动方案很难将MOSFET集成到芯片内部,本文主要以60W的汽车电子水泵为例介绍如何根据电机的功率选择合适的MOSFET型号。
图1 BLDC电控系统
MOSFET的选择主要从以下几个方面考虑:
1、Id电流,控制系统是12V、60W,正常工作电流5A,需要考虑堵转的情况,按照3倍以上的电流计算。这个参数只当做参考。
2、Vds,因为是12V系统,所以一般推荐40V的MOS。
3、P = Pr + Ps 算出MOS的整体功耗,然后根据热阻参数算出温升,用工作温度加上温升后确认是否超过MOS的最大工作温度。
本文以新电元的MOSFET P105LF4QNK为例,为大家讲解MOS的选取,该MOS的参数如下:
根据以上参数计算该MOS的整体功耗和温升大体如下:
通过以上计算可以看到60W水泵最大工况下的温升是14.46摄氏度,如果工作环境温度是100℃,整体的温度是114.46℃,不超过该MOS的最大工作温度175℃。所以满足本系统的应用。
新电元汽车级MOSFET P105LF4QNK具有以下的特点:
1、 通过AEC-Q101认证,品质可靠。
2、 导通电流大,最大105A,有充足的性能余量,提升产品可靠性。
3、 LFPAK56封装,体积小,节省布板面积,便于散热设计。
4、 导通电阻仅2.2mR,导通损耗低。
通过以上的介绍详细大家已经了解了MOS的选取方法,如果有60W左右的电机控制项目,P105LF4QNK可以满足您的需求。
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Shindengen(新电元)二极管/MOSFET/功率IC/功率模块选型指南
描述- In addition to offering diverse diodes as a leading company of diodes, Shindengen offers a broad range of MOSFETs from low-withstand voltage to high-withstand voltage, as well as high-withstand power ICs and power modules that centralize power circuit components.
型号- 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型号- P98LF6QNK,P30W60HP2V,TW系列,P12FE7R5SBK,P30FE6SLK,P240FZ4QNKA,P180FP6SNK,P50W28VX6V,P100FP12SNK,P2B60HP2F,P46LF7R5SLK,P4B60HP2F,P5F50HP2F,P88FP10SNK,P211FZ4QMKA,P70FP12SNK,P85W28HP2F,P2R5B52HP2F,P168FP7R5SNK,P40LF12SNK,P50LF10SNK,P20FE12SLK,P25LF12SLK,P54B4SN,P15LA12SL,P105LF4QNK,P40B6SL,P64LF6QNK,P25B6EB,P140LF4QLK,P32LF10SNK,P175FP4SNK,P30W60EV,P8B10SB,P1FE90VX3,P8FE10SBK,P60B4EL,P72LF7R5SLK,P60B6EL,P19LA10SL,P14FE6SBK,P170FZ6QNKA,P60W60EV,P60B6SN,P98LF6QLK,P20B12SN,P30FE4SLK,P6FE25VX5K,P60B4SN,P23F40HP2FM,P20F60EV,P26B10SL,P18LA12SL,P24B4SB,P180FP4SNK,P46LF7R5SNK,P20B12SL,P22FE4SBK,P26B10SN,P9B30HP2F,P153FP6SNK,P16B6SB,P30LA10SL,P30FE7R5SLK,P40LF12SLK,P50LF10SLK,P15F60HP2F,P25LF12SNK,P30B10EL,P126FP10SNK,P64LF6QLK,P32B12SN,P23LA10SL,P140LF4QNK,P26FE10SLK,P32LF10SLK,P40B10SL,P105LF4QLK,P2FE60VX5K,P40B10SN,P260FZ4QNKA,P200FZ6QNKA,P25LA12SLK,P72LF7R5SNK
Power MOSFET Series(In-Vechicle)
型号- P98LF6QNK,P38LF6QNK,P12FE7R5SBK,P30FE6SLK,P240FZ4QNKA,P180FP6SNK,P100FP12SNK,P46LF7R5SLK,P88FP10SNK,P70FP12SNK,P168FP7R5SNK,P40LF12SNK,P50LF10SNK,P25LF12SLK,P20FE12SLK,P19LF6QLKD,P105LF4QNK,P64LF6QNK,P15LF6QLKD,P140LF4QLK,P24LF4QLK,P70LF4QLK,P32LF10SNK,P7LF10SLKD,P175FP4SNK,P1FE90VX3,P46LF4QLKD,P18LF6QLK,P8FE10SBK,P72LF7R5SLK,P3FH90VX3,P5FH90VX3,P14FE6SBK,P170FZ6QNKA,P17LF4QLKD,P98LF6QLK,P6FE25VX5K,P30FE4SLK,P38LF6QLK,P180FP4SNK,P46LF7R5SNK,P22FE4SBK,P153FP6SNK,P30FE7R5SLK,P40LF12SLK,P24LF4QNK,P50LF10SLK,P25LF12SNK,P12LF10SLKD,P126FP10SNK,P64LF6QLK,P140LF4QNK,P16LF6QLKD,P32LF10SLK,P26FE10SLK,P105LF4QLK,P70LF4QNK,P2FE60VX5K,P17LF10SLKD,P18LF6QNK,P72LF7R5SNK,P38LF4QLKD
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加工精度:精密平面磨床正负0.002;铣床正负0.02,ZNC放电正负0.01。CNC加工材料:铝、钢、聚合物等材料。专注于半导体行业、医疗器械、汽车行业、新能源行业、信息技术行业零部件加工。
最小起订量: 1个 提交需求>
制造铜、铝、铁、不锈钢、合成树脂及各种材质的长短轴类零件,加工五金件尺寸范围:外径:2~100mm ,长度2~100mm ;精度:±0.005um;表面光洁度:可达0.02Ra。拥有50台全进口的五轴设备,通过50项专利认证。
最小起订量: 500 提交需求>
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