LPS6235-335 [COILCRAFT]
General Purpose Inductor,;型号: | LPS6235-335 |
厂家: | Coilcraft lnc. |
描述: | General Purpose Inductor, |
文件: | 总2页 (文件大小:163K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
•ꢀ LOGꢀisꢀtheꢀnaturalꢀLOGꢀ(basee)
Document 267
SPICE Model – LPS6235
This lumped-element (SPICE) model data simulates
The value of the frequency-dependent variable resistor
RVAR1 is calculated from:
the frequency-dependent behavior of Coilcraft power
inductors within the frequency range shown in the ac-
companying table for each individual inductor.
RVAR1 = k1
*
•ꢀ k1ꢀisꢀshownꢀforꢀeachꢀvalueꢀinꢀtheꢀaccompanyingꢀtable.
•ꢀ fꢀisꢀtheꢀfrequencyꢀinꢀHz
The data represents de-embedded measurements, as
described below.Effects due to different customer circuit
board traces, board materials, ground planes or interac-
tions with other components are not included and can
have a significant effect when comparing the simulation
to measurements of the inductors using other production
verification instruments and fixtures.
•ꢀ RVAR1 is the resistance in Ohms
The value of the frequency-dependent variable resistor
RVAR2 is calculated from:
RVAR2 = k2
*
•ꢀ k2ꢀisꢀshownꢀforꢀeachꢀvalueꢀinꢀtheꢀaccompanyingꢀtable.ꢀ
•ꢀ fꢀisꢀtheꢀfrequencyꢀinꢀHz
Lumped Element Modeling Method
Measurements were made using a 50 Ohm impedance
analyzer.Fixturecompensationwasperformedtoremove
fixture effects. No DC bias current was applied in any of
the measurements. The lumped element values were
determined by optimizing the simulation model to an
average of the measurements. This method results in a
model that represents as closely as possible the typical
frequency-dependent behavior of the component within
the model frequency range.
•ꢀ RVAR2 is the resistance in Ohms
Note: The log function in the following equation is the
natural logarithm, base e, not base 10.
The value of the frequency-dependent inductance LVAR
is calculated from:
LVAR = k3 − k4 * LOG (k5 f)
*
•ꢀ k3,ꢀk4,ꢀandꢀk5ꢀareꢀshownꢀinꢀtheꢀaccompanyingꢀtable.
•ꢀ fꢀisꢀtheꢀfrequencyꢀinꢀHz
Theequivalentlumpedelementmodelschematicisshown
below. Each model should only be analyzed at the input
and output ports. Individual elements of the model are
not determined by parameter measurement. The ele-
ments are determined by the overall performance of the
lumped element model compared to the measurements
taken of the component.
•ꢀ LVARꢀisꢀtheꢀinductanceꢀinꢀµH
Disclaimer
Coilcraft makes every attempt to provide accurate mea-
surement data and software, representative of our com-
ponents, in a usable format.Coilcraft, however, disclaims
all warrants relating to the use of its data and software,
whether expressed or implied, including without limita-
tion any implied warranties of merchantability or fitness
for a particular purpose. Coilcraft cannot and will not be
liable for any special, incidental, consequential, indirect
or similar damages occurring with the use of the data
and/or software.
R
VAR2
C
R1
L
R2
R
VAR1
VAR
Document 267-1 Revised 07/22/11
Document 267
SPICE Model for Coilcraft LPS6235 Power Inductors
Frequency limit
of model (MHz)
LVAR Coefficients
Part number Lower Upper
R1()
R2()
C (pF)
k1
k2
2.2
2.56
3.22 10
3.74 12
4.95 15
5.76 18
6.68 22
7.74 33
k3
6.8
8.2
k4
k5
LPS6235-682
LPS6235-822
LPS6235-103
LPS6235-123
LPS6235-153
LPS6235-183
LPS6235-223
LPS6235-333
LPS6235-473
LPS6235-563
LPS6235-683
LPS6235-823
LPS6235-104
LPS6235-124
LPS6235-154
LPS6235-224
LPS6235-334
LPS6235-474
LPS6235-564
LPS6235-684
LPS6235-824
LPS6235-105
LPS6235-155
LPS6235-185
LPS6235-225
LPS6235-335
LPS6235-475
LPS6235-565
LPS6235-685
LPS6235-825
LPS6235-106
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
60
50
40
40
30
30
30
30
30
30
30
20
20
20
10
10
200
178
115
75
50
65
45
14
13
12
14
20
20
22
18
24
100
130
70
190
160
120
180
120
70
180
30
250
50
0.075
0.095
0.100
0.110
0.125
0.140
0.145
0.180
0.245
0.280
0.345
0.315
0.375
0.435
0.535
0.72
1.02
1.58
1.75
1.97
2.70
3.20
4.60
5.42
1.93
2.53
2.85
3.24
3.79
3.06
3.32
3.61
4.00
3.92
3.91
3.13
2.86
3.21
3.85
3.64
4.19
5.05
5.18
4.67
6.00
5.20
4.72
5.41
5.52
6.67
5.76
6.82
5.72
6.62
8.05
9.00E-05
1.80E-04
1.00E-04
1.80E-04
3.00E-04
2.20E-04
2.60E-04
2.80E-04
1.40E-03
1.00E-03
4.00E-04
4.00E-04
7.50E-04
9.00E-04
1.90E-03
1.20E-03
6.00E-04
4.00E-04
1.60E-03
2.00E-03
2.60E-03
3.80E-03
4.20E-03
6.90E-03
9.50E-03
1.10E-02
0.06
0.10
0.11
0.17
0.19
0.22
0.24
0.36
0.68
0.88
0.92
0.90
0.92
0.94
1.2
1.8
2.5
2.8
3.2
3.4
4.7
5.5
7.7
9.85E-06
9.85E-06
9.88E-06
9.92E-06
9.92E-06
9.92E-06
9.92E-06
9.92E-06
9.80E-06
9.90E-06
9.99E-06
9.97E-06
9.94E-06
1.00E-05
1.00E-05
1.02E-05
1.06E-05
1.15E-05
1.19E-05
1.25E-05
1.37E-05
1.42E-05
1.68E-05
2.30E-05
3.18E-05
4.26E-05
1.55E-04
4.25E-04
3.02E-04
1.32E-03
4.59E-03
10.2
47
56
68
82
12.4
16.2
17.0
20.2 100
26.6 120
30.0 150
41.0 220
67.0 330
96.0 470
6.0
5.0
4.0
3.0
3.0
3.0
3.0
3.0
3.0
2.0
2.0
1.0
1.0
1.0
1.0
102
560
680
820
131
178
215
303
380
435
640
1000
1500
1800
2200
3300
4700
5600
6800
8200
8.0
8.8
19.3
18.0
22.0
30.0
35.0
50.0
6.40
8.90
14.0
16.4
21.4
24.0
29.0
1.10E-02 1200
1.10E-02 1100
1.20E-02 1500
1.50E-02 1600
60
60
1.40E-02 1700 10000
Document 267-70 Revised 04/12/11
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