Document 267 SPICE Model – SER2000 This lumped-element (SPICE) model data simulates the frequency-dependent behavior of Coilcraft power inductors within the frequency range shown in the accompanying table for each individual inductor. The data represents de-embedded measurements, as described below. Effects due to different customer circuit board traces, board materials, ground planes or interactions 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. The value of the frequency-dependent variable resistor RVAR1 is calculated from: RVAR1 = k1 * • k1 is shown for each value in the accompanying table. • f is the frequency in Hz • RVAR1 is the resistance in Ohms The value of the frequency-dependent variable resistor RVAR2 is calculated from: RVAR2 = k2 * Lumped Element Modeling Method • k2 is shown for each value in the accompanying table. Measurements were made using a 50 Ohm impedance analyzer. Fixture compensation was performed to remove 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. • f is the frequency in Hz The equivalent lumped element model schematic is shown below. Each model should be analyzed only at the input and output ports. Conclusions based on individual lumped element values may be erroneous. • k3, k4, and k5 are shown in the accompanying table. • 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) • f is the frequency in Hz • LVAR is the inductance in µH • LOG is the natural LOG (base e) Disclaimer RVAR2 VAR C R2 RVAR1 VAR R1 LVAR Coilcraft makes every attempt to provide accurate measurement data and software, representative of our components, in a usable format. Coilcraft, however, disclaims all warrants relating to the use of its data and software, whether expressed or implied, including without limitation 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. Specifications subject to change without notice. © Coilcraft, Inc. 2007 Document 267-1 Revised 08/03/07 Document 267 SPICE Model for Coilcraft SER2000 Power Inductors Part number SER2009-301 SER2010-301 SER2009-501 SER2010-501 SER2011-501 SER2009-601 SER2010-601 SER2011-601 SER2012-601 SER2009-681 SER2010-681 SER2011-681 SER2012-681 SER2013-681 SER2009-801 SER2010-801 SER2011-801 SER2012-801 SER2013-801 SER2014-801 SER2009-901 SER2010-901 SER2011-901 SER2012-901 SER2013-901 SER2014-901 SER2009-102 SER2010-102 SER2011-102 SER2012-102 SER2013-102 SER2014-102 SER2009-122 SER2010-122 SER2011-122 SER2012-122 SER2013-122 SER2014-122 SER2009-202 SER2010-202 SER2011-202 SER2012-202 SER2013-202 SER2014-202 Frequency limit of model (MHz) Lower Upper 0.1 100 0.1 100 0.1 50 0.1 70 0.1 100 0.1 50 0.1 80 0.1 100 0.1 100 0.1 40 0.1 60 0.1 90 0.1 90 0.1 90 0.1 30 0.1 60 0.1 80 0.1 80 0.1 80 0.1 90 0.1 30 0.1 40 0.1 70 0.1 70 0.1 70 0.1 70 0.1 40 0.1 50 0.1 70 0.1 70 0.1 70 0.1 70 0.1 30 0.1 40 0.1 60 0.1 60 0.1 60 0.1 60 0.1 20 0.1 30 0.1 40 0.1 40 0.1 50 0.1 50 LVAR Coefficients ⏲) R1 (⏲ 200 110 275 170 100 275 170 145 71 230 190 172 73 45 340 173 157 97 60 53 260 300 200 160 65 50 220 220 215 94 82 70 235 350 165 150 77 70 245 325 475 200 145 125 ⏲) R2 (⏲ 5.88E-04 8.52E-04 5.88E-04 8.52E-04 1.13E-03 5.88E-04 8.52E-04 1.13E-03 1.35E-03 5.88E-04 8.52E-04 1.13E-03 1.35E-03 1.60E-03 5.88E-04 8.52E-04 1.13E-03 1.35E-03 1.60E-03 1.83E-03 5.88E-04 8.52E-04 1.13E-03 1.35E-03 1.60E-03 1.83E-03 5.88E-04 8.52E-04 1.13E-03 1.35E-03 1.60E-03 1.83E-03 5.88E-04 8.52E-04 1.13E-03 1.35E-03 1.60E-03 1.83E-03 5.88E-04 8.52E-04 1.13E-03 1.35E-03 1.60E-03 1.83E-03 C (pF) 15.7 4.40 19.0 8.06 3.98 19.0 7.02 3.92 4.00 23.0 8.77 4.50 5.10 4.58 30.0 8.79 6.00 4.96 4.90 4.13 31.3 9.93 5.09 4.20 5.01 4.86 32.3 10.3 4.82 6.10 5.13 4.94 27.0 9.52 6.50 5.45 5.45 4.86 45.0 13.3 6.20 6.40 5.83 5.26 k1 2.70E-05 2.70E-05 2.70E-05 6.60E-05 1.00E-04 2.70E-05 4.80E-05 4.20E-05 9.00E-05 6.00E-05 6.00E-05 6.00E-05 1.00E-04 1.00E-04 3.30E-05 6.00E-05 1.10E-04 1.10E-04 1.10E-04 9.00E-05 8.00E-05 1.00E-04 1.59E-04 1.28E-04 1.90E-04 1.06E-04 4.50E-05 4.50E-05 9.80E-04 9.80E-05 1.70E-04 1.70E-04 8.40E-05 1.23E-04 1.23E-04 1.23E-04 1.23E-04 1.80E-04 3.50E-05 3.50E-05 7.50E-05 1.25E-04 2.60E-04 2.60E-04 k2 0.064 0.053 0.070 0.085 0.085 0.070 0.091 0.097 0.117 0.079 0.105 0.116 0.140 0.170 0.108 0.098 0.144 0.158 0.186 0.220 0.116 0.144 0.131 0.174 0.200 0.248 0.115 0.126 0.126 0.184 0.218 0.288 0.096 0.141 0.155 0.206 0.226 0.274 0.160 0.194 0.258 0.256 0.305 0.386 k3 0.30 0.30 0.50 0.50 0.50 0.60 0.60 0.60 0.60 0.68 0.68 0.68 0.68 0.68 0.80 0.80 0.80 0.80 0.80 0.80 0.90 0.90 0.90 0.90 0.90 0.90 1.0 1.0 1.0 1.0 1.0 1.0 1.2 1.2 1.2 1.2 1.2 1.2 2.0 2.0 2.0 2.0 2.0 2.0 Specifications subject to change without notice. k4 4.65E-03 7.60E-04 1.63E-03 1.23E-03 1.23E-03 1.63E-03 1.35E-03 2.63E-03 2.63E-03 1.23E-03 1.23E-03 1.23E-03 2.63E-03 2.63E-03 2.20E-04 2.20E-04 7.43E-06 7.43E-04 5.00E-03 5.00E-03 4.29E-03 1.02E-03 4.26E-03 1.00E-03 7.51E-03 3.00E-03 1.65E-03 7.60E-03 2.00E-03 6.21E-03 3.19E-03 1.00E-02 3.85E-03 3.85E-03 3.85E-03 4.66E-03 4.66E-03 1.00E-02 2.30E-02 1.20E-02 5.13E-03 1.00E-02 1.00E-02 1.00E-02 k5 8.00E-06 8.00E-06 6.00E-06 6.00E-06 4.00E-06 6.00E-06 6.82E-05 6.82E-06 6.82E-06 3.85E-06 6.20E-06 6.20E-06 7.50E-06 7.50E-06 3.15E-07 3.15E-07 2.00E-06 2.00E-06 8.00E-06 8.00E-06 7.00E-06 2.15E-06 5.43E-06 2.00E-06 7.76E-06 7.00E-06 4.00E-06 7.80E-06 4.00E-05 8.00E-06 6.00E-06 8.00E-06 4.30E-06 5.17E-06 5.17E-06 6.25E-06 7.50E-06 7.50E-06 8.38E-06 8.38E-06 6.27E-06 6.82E-06 6.20E-06 6.20E-06 Document 267-28 Revised 09/13/04