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电源设计 － 通用电感
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| 输入数据 |
L= |
1.5 |
uH |
电感量 |
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Ipkx= |
18.0 |
Apk |
最大峰值电感电流 |
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Ippx= |
8.0 |
App |
最大峰峰电流 |
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Idcx= |
14.0 |
Aavg |
最大平均电流 |
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Iacx= |
2.3 |
Arms |
最大交流纹波电流rms值 |
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f= |
140 |
kHz |
B变化频率范围 |
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Icd= |
6.0 |
A/mm2 |
电流密度y |
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Smp= |
1.3 |
mm |
安全裕度, Pri/HF绕组, mm |
RM 12 |
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Sms= |
1.3 |
mm |
安全裕度, Sec/LF绕组, mm |
RM 12 |
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Whm= |
10.0 |
mm |
最小绕组高度, mm |
RM 12 |
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Wwm= |
14.0 |
mm |
最小绕组宽度, mm |
RM 12 |
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Ltm= |
47.0 |
mm |
最小绕组长度 |
RM 12 |
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Ltn= |
61.0 |
mm |
平均绕组长度 |
RM 12 |
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Am= |
125 |
mm2 |
磁芯面积，最小值 |
RM 12 |
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Ae= |
146 |
mm2 |
磁芯面积，有效值 |
RM 12 |
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le= |
56.6 |
mm |
磁路长度 |
RM 12 |
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Vm= |
8,340 |
mm3 |
磁体积 |
RM 12 |
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Vt= |
8,340 |
mm3 |
总体积 |
RM 12 |
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ALo= |
5,050 |
nH/T2 |
AL, 无开口磁芯, 无直流偏置 |
RM12-3F3 |
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ur= |
1,558 |
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u, 无开口磁芯, 无直流偏置 |
3F3 |
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Bmax= |
0.30 |
T |
最大磁通密度 |
3F3 |
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uh= |
99.0 |
% |
在Hpk的穿透性 |
3F3 |
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| 输出数据 |
L0= |
5.1 |
uH |
零偏置，无开口电感 |
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Lb= |
5.0 |
uH |
峰电流偏置，无开口电感量 |
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L= |
1.5 |
uH |
峰值电流偏置，开口电感量 |
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Nomin= |
0.7 |
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最小匝数 |
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No= |
1 |
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选定的匝数 |
> 1.2 x Nomin |
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Bpk= |
0.22 |
T |
实际的峰值磁通密度 |
OK |
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AL= |
5,000 |
nH/T2 |
Al磁芯, 不开口,Hpk的偏置 |
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ALg= |
1,500 |
nH/T2 |
需要的AL磁芯，开口，Hpk的偏置 |
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ue= |
463 |
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需要的相对穿透性，开口磁芯 |
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Gap0= |
0.09 |
mm |
磁芯开口，无叉指效应 |
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Gap= |
0.09 |
mm |
磁芯开口，接近于真实情况 |
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dB= |
41 |
mT |
半B峰峰范围 |
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Hpk= |
247 |
A/m |
磁感应力， SI |
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Hpk= |
3 |
Oe |
磁感应力, USA |
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Inductor Core Loss |
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| 中间数据 |
P3= |
13 |
mW/cm3 |
Philips 3F3铁氧体材料 |
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| data |
Pml= |
96 |
mW/cm3 |
Allied Signal 的245 微晶材料 |
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Pm60= |
90 |
mW/cm3 |
Magnetics 的60u MPP材料 |
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Pm125= |
156 |
mW/cm3 |
Magnetics 的125uMPP材料 |
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Pk= |
230 |
mW/cm3 |
Magnetics的Kool-Mu材料 |
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Ppl= |
299 |
mW/cm3 |
Allied Signal的PowerLite材料 |
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Phf= |
409 |
mW/cm3 |
Magnetics 的60u高磁通材料 |
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P18= |
748 |
mW/cm3 |
Micrometals 的18铁粉材料 |
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Rthm= |
13.4 |
℃/W |
Rth, 螺旋管, 开环, 自然传导 |
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| 输出数据 |
P3= |
0.1 |
W |
3F3 |
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Pml= |
0.8 |
W |
MicroLite 245 |
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Pm60= |
0.8 |
W |
MPP 60u |
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Pm125= |
1.3 |
W |
MPP 125u |
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Pk= |
1.9 |
W |
Kool-Mu |
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Ppl= |
2.5 |
W |
PowerLite |
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Phf= |
3.4 |
W |
60u高磁通 |
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P18= |
6.2 |
W |
18铁粉 |
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dT3= |
1 |
℃ |
Core Temperature Rise, 3F3 |
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dTml= |
11 |
℃ |
磁芯温升, MicroLite 245 |
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dTm60= |
10 |
℃ |
磁芯温升, MPP 60u |
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dTm125= |
17 |
℃ |
磁芯温升, MPP 125u |
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dTk= |
26 |
℃ |
磁芯温升, Kool-Mu |
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dTpl= |
33 |
℃ |
磁芯温升, PowerLite |
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dThf= |
46 |
℃ |
磁芯温升, High Flux 60 |
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dT18= |
84 |
℃ |
磁芯温升, 18铁粉 |
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| 这个表计算电感 (匝数和芯损）。 |
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| 磁芯工作温度设为100℃. |
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| Minimum loss would be at 80-90℃. |
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| 最大磁芯工作温度应为 <140℃. |
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| 公式的精度对于芯损可达到±10% 对于温升可达到±25%。 |
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| SMPS电源公司 |
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| 只做正确的事就是最需要做的事™ |
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| www.PowerSupplies.net |
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| www.GoToPower.net |
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| 版权所有©1998-2005 SMPS Power Supplies,
Inc. 保留所有权利 |
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| 版权所有©1990-1997 LCD Consulting |
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| 版权所有©1979-1989 Constantin Darius Livescu |
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欢迎评论和建议。
查看完整的表格：ADH2450Deszg.xls
版权所有©1998-2005
SMPS电源公司.
保留所有权利
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