|
电源设计 － 输出电感
| |
|
|
|
|
|
|
|
|
|
|
|
|
输入数据 |
Lo= |
0.76 |
uH |
电感 |
|
|
|
|
| |
Iopkx= |
97.7 |
Apk |
电感最大峰值电流 |
|
|
|
|
| |
Ioppx= |
15.3 |
App |
最大峰峰电流 |
|
|
|
|
| |
Iodcx= |
90.0 |
Arms |
最大平均电流 |
|
|
|
|
| |
Ioacx= |
4.4 |
Arms |
最大交流rms纹波电流 |
|
|
|
|
| |
fdc= |
360 |
kHz |
B变化的频率 |
|
|
|
|
| |
Icd= |
6.0 |
A/mm2 |
电流密度 |
|
|
|
|
| |
Smp= |
1.3 |
mm |
安全裕度,
主/HF 绕组, mm |
|
|
|
|
| |
Sms= |
1.3 |
mm |
安全裕度,
次/LF 绕组, mm |
|
|
|
|
| |
Whm= |
7.1 |
mm |
最小绕组高度, mm |
E42/21/15 |
|
|
|
| |
Wwm= |
25.5 |
mm |
最小绕组宽度, mm |
E42/21/15 |
|
|
|
| |
Ht= |
15.4 |
mm |
芯的高度或 "C"
的尺寸 |
E42/21/15 |
|
|
|
| |
Ltm= |
66.5 |
mm |
最小圈长 |
E42/21/15 |
|
|
|
| |
le= |
98.4 |
mm |
磁路长度 |
E42/21/15 |
|
|
|
| |
Ae= |
183 |
mm2 |
有效磁芯面积 |
E42/21/15 |
|
|
|
| |
Am= |
183 |
mm2 |
最小磁芯面积 |
E42/21/15 |
|
|
|
| |
Vm= |
18,000 |
mm3 |
磁体积 |
E42/21/15 |
|
|
|
| |
ur= |
40 |
|
u, 无隙芯,无直流偏置 |
K40 |
|
|
|
| |
Bmax= |
1.00 |
T |
最大磁通密度 |
K40 |
|
|
|
| |
uh= |
90.5 |
% |
渗透性 @ Hpk |
K40 |
|
|
|
| |
ncoin= |
1 |
|
磁芯片数 |
|
|
|
|
| |
|
|
|
|
|
|
|
|
|
中间数据 |
Ltm= |
66.5 |
mm |
最小匝长, ncoin片 |
|
|
|
|
|
Ltn= |
94.9 |
mm |
平均匝长，ncoin片 |
|
|
|
|
| |
Aet= |
183 |
mm2 |
有效磁芯面积, ncoin片 |
|
|
|
|
| |
Amt= |
183 |
mm2 |
最小磁芯面积，ncoin片 |
|
|
|
|
| |
Vmt= |
18,000 |
mm3 |
磁体积, ncoin
片 |
|
|
|
|
| |
Vc= |
15,021 |
mm3 |
铜体积 |
|
|
|
|
| |
Vt= |
33,021 |
mm3 |
总电感体积 |
|
|
|
|
| |
ALc= |
7.9 |
nH/T2 |
AL, 只螺旋管 |
|
|
|
|
| |
ALo= |
93 |
nH/T2 |
AL, 无隙芯,
无直流偏置, 一片 |
|
|
|
|
| |
ALot= |
93 |
nH/T2 |
AL, 无隙芯,
无直流偏置, ncoin片 |
|
|
|
|
| |
AL= |
85 |
nH/T2 |
AL, 无隙芯,
偏置@ Hpk, ncoin片 |
|
|
|
|
| |
ALg= |
84.7 |
nH/T2 |
需要的芯AL,
气隙, 偏置@ Hpk |
|
|
|
|
| |
L0= |
0.07 |
uH |
感应系数，无芯 |
|
|
|
|
| |
Lo0= |
0.91 |
uH |
零偏置感应系数，无隙，测试值 |
|
|
|
|
| |
|
|
|
|
|
|
|
|
|
输出数据 |
Nbmin= |
0.4 |
|
M最小匝数 |
|
|
|
|
| |
Nb= |
3.0 |
|
选定的最小匝数 |
> 1.2 x Nbmin |
|
|
|
| |
Bpk= |
0.14 |
T |
实际的峰值磁通密度 |
OK |
|
|
|
| |
Gap0= |
0.00 |
mm |
芯隙，无叉指效应 |
|
|
|
|
| |
Gap= |
0.00 |
mm |
芯隙，接近于实际情况 |
|
|
|
|
| |
dBpk= |
11 |
mT |
最大峰峰B范围的一半ion |
|
|
|
|
| |
Hpksi= |
2,744 |
A/m |
磁感应强度，SI |
|
|
|
|
| |
Hpku= |
34 |
Oe |
磁感应强度，USA |
|
|
|
|
| |
|
|
|
|
|
|
|
|
| |
|
|
|
|
|
|
|
|
| |
输出电感芯损 |
|
|
|
|
|
| |
|
|
|
|
|
|
|
|
|
中间数据 |
P3= |
2 |
mW/cm3 |
Philips铁氧体3F3材料 |
|
|
|
|
|
Pml= |
9 |
mW/cm3 |
Allied Signal MicroLite 245
材料 |
|
|
|
|
| |
Pm60= |
16 |
mW/cm3 |
Magnetics MPP 60u 材料 |
|
|
|
|
| |
Pm125= |
26 |
mW/cm3 |
Magnetics MPP 125u 材料 |
|
|
|
|
| |
Pk= |
61 |
mW/cm3 |
Magnetics Kool-Mu 材料 |
|
|
|
|
| |
Ppl= |
117 |
mW/cm3 |
Allied Signal PowerLite 材料 |
|
|
|
|
| |
Phf= |
41 |
mW/cm3 |
Magnetics High Flux 60u 材料 |
|
|
|
|
| |
P18= |
117 |
mW/cm3 |
Micrometals 离子粉
18 材料 |
|
|
|
|
| |
Rthm= |
8.9 |
℃/W |
Rth, 环形,
开环,自然对流 |
|
|
|
|
| |
|
|
|
|
|
|
|
|
|
输出数据 |
P3= |
0.0 |
W |
3F3 |
|
|
|
|
| |
Pml= |
0.2 |
W |
MicroLite 245 |
|
|
|
|
| |
Pm60= |
0.3 |
W |
MPP 60u |
|
|
|
|
| |
Pm125= |
0.5 |
W |
MPP 125u |
|
|
|
|
| |
Pk= |
1.1 |
W |
Kool-Mu |
|
|
|
|
| |
Ppl= |
2.1 |
W |
PowerLite |
|
|
|
|
| |
Phf= |
0.7 |
W |
High Flux 60u |
|
|
|
|
| |
P18= |
2.1 |
W |
Iron Powder 18 |
|
|
|
|
| |
dT3= |
0 |
℃ |
磁芯温升, 3F3 |
|
|
|
|
| |
dTml= |
1 |
℃ |
磁芯温升, MicroLite 245 |
|
|
|
|
| |
dTm60= |
3 |
℃ |
磁芯温升, MPP 60u |
|
|
|
|
| |
dTm125= |
4 |
℃ |
磁芯温升, MPP 125u |
|
|
|
|
| |
dTk= |
10 |
℃ |
磁芯温升, Kool-Mu |
|
|
|
|
| |
dTpl= |
19 |
℃ |
磁芯温升, PowerLite |
|
|
|
|
| |
dThf= |
7 |
℃ |
磁芯温升, High Flux 60 |
|
|
|
|
| |
dT18= |
19 |
℃ |
磁芯温升, Iron Powder 18 |
|
|
|
|
| |
|
|
|
|
|
|
|
|
| |
|
|
|
|
|
|
|
|
| |
输出电感铜损 |
|
|
|
|
| |
|
|
|
|
|
|
|
|
|
中间数据 |
Dpenm= |
0.133 |
mm |
穿透深度, mm |
|
|
|
|
|
Dpen= |
5.2 |
mil |
穿透深度, mil |
|
|
|
|
| |
Sml= |
52 |
mil |
安全裕度,
低频绕组, mil |
|
|
|
|
| |
Smh= |
52 |
mil |
安全裕度,
高频绕组, mil |
|
|
|
|
| |
Ww= |
1.004 |
inch |
绕组宽度,
可用的 |
|
|
|
|
| |
Ltl= |
3.736 |
inch |
平均匝长,
低频绕组 |
|
|
|
|
| |
Lth= |
3.736 |
inch |
平均匝长,
高频绕组 |
|
|
|
|
| |
Wal= |
0.900 |
inch |
绕组宽度,
低频绕组 |
|
|
|
|
| |
Waf= |
0.900 |
inch |
绕组宽度，高频绕组 |
|
|
|
|
| |
Dlf1= |
25.8 |
mil |
电流密度需要的低频绕组厚度 |
|
|
|
|
| |
Dlfc= |
60.0 |
mil |
选定的低频绕组厚度 |
|
|
|
|
| |
Dlf2= |
90.2 |
mil |
低频绕组厚度（绕组高度限制的） |
|
|
|
|
| |
Alf= |
34.84 |
mm2 |
低频绕组截面积 |
|
|
|
|
| |
Dhf= |
7.620 |
mm |
低频绕组导线直径 |
x 1 |
|
|
|
| |
Dhfc= |
1.524 |
mm |
选择的高频绕肚导线直径 |
|
|
|
|
| |
Ahfc= |
34.84 |
mm2 |
选择的高频绕组截面积 |
|
|
|
|
| |
Qs= |
11.49 |
|
高频绕组的层厚/穿透深度 |
|
|
|
|
| |
Po= |
3.0 |
|
每个绕组的层数 |
|
|
|
|
| |
Fro= |
72.79 |
|
高频绕组的Rac/Rdc比 |
|
|
|
|
| |
Tc= |
125.0 |
℃ |
实际的铜温 |
|
|
|
|
| |
|
|
|
|
|
|
|
|
|
输出数据 |
Poicrl= |
1.1 |
W |
Kool-Mu的芯损 |
|
|
|
|
| |
Pgap= |
0.0 |
W |
气隙功耗 |
|
|
|
|
| |
Rdclf= |
0.2 |
mOhm |
低频绕组直流阻抗 |
|
|
|
|
| |
Rdchf= |
0.2 |
mOhm |
高频绕组直流阻抗 |
|
|
|
|
| |
Rachf= |
14.9 |
mOhm |
高频绕组交流阻抗 |
|
|
|
|
| |
Poilfl= |
1.7 |
W |
低频绕组铜损 |
|
|
|
|
| |
Poihfl= |
0.3 |
W |
高频绕组铜损 |
|
|
|
|
| |
Poitcpl= |
1.9 |
W |
总铜损 |
|
|
|
|
| |
Poitl= |
3.0 |
W |
电感总功耗 |
|
|
|
|
| |
Rth= |
6.4 |
℃/W |
Rth, 环形，开环，自然对流 |
|
|
|
|
| |
dT3= |
19 |
℃ |
自然对流的温升 |
仅作对比用 |
|
|
|
| |
|
|
|
|
|
|
|
|
| |
|
|
|
|
|
|
|
|
| 我们建议使用H(180℃)级功率磁器件(升压电感,功率变压器和输出电感 |
|
|
|
| |
|
|
|
|
|
|
|
|
| 磁芯功耗计算中假设磁芯工作温度为100℃。 |
|
|
|
|
| 最小功耗为80-90℃。 |
|
|
|
|
|
|
| 最高磁芯工作温度应<160℃
(Tc=200℃-40℃ 裕度). |
|
|
|
|
| |
|
|
|
|
|
|
|
|
| 磁芯功耗计算公式的精度可达到 ±10%。 |
|
|
|
|
| 温升计算公式的精度可达到±30%。 |
|
|
|
|
| |
|
|
|
|
|
|
|
|
| 温升为自然对流冷却方式下的。 |
|
|
|
|
| 根据空气流动的情况，强制（风扇）冷却下的温升可为1/2到1/3。 |
|
|
|
|
| |
|
|
|
|
|
|
|
|
| |
|
|
|
|
|
|
|
|
| |
|
|
|
|
|
|
|
|
| SMPS电源公司 |
|
|
|
|
|
|
| 只做正确的事就是最需要做的事™ |
|
|
|
|
|
| www.PowerSupplies.net |
|
|
|
|
|
|
| www.GoToPower.net |
|
|
|
|
|
|
|
| |
|
|
|
|
|
|
|
|
| 版权所有©1998-2005 SMPS Power Supplies,
Inc. 保留所有权利 |
|
|
|
|
| 版权所有©1990-1997 LCD Consulting |
|
|
|
|
|
| 版权所有©1979-1989 Constantin Darius Livescu |
|
|
|
|
欢迎评论和建议。查看完整的电子表格: ADH2450Deszg.xls
版权所有©1998-2005
SMPS电源公司.
保留所有权利
|
|