Document 267 SPICE Model - LPS5010 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 * * 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 * RVAR2 is the resistance in Ohms The equivalent lumped element model schematic is shown 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 elements are determined by the overall performance of the lumped element model compared to the measurements taken of the component. * k3, k4, and k5 are shown in the accompanying table. * f is the frequency in Hz * LVAR is the inductance in H * LOG is the natural LOG (base e) Lumped Element Modeling Method RVAR2 VAR C R2 RVAR1 VAR R1 LVAR 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) Disclaimer 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. Document 267-1 Revised 08/02/11 Document 267 SPICE Model for Coilcraft LPS5010 Power Inductors Part number LPS5010-152 LPS5010-222 LPS5010-332 LPS5010-472 LPS5010-562 LPS5010-682 LPS5010-103 LPS5010-153 LPS5010-223 LPS5010-333 LPS5010-473 LPS5010-683 LPS5010-104 LPS5010-124 LPS5010-154 LPS5010-224 LPS5010-334 LPS5010-474 LPS5010-564 LPS5010-684 LPS5010-105 Frequency limit of model (MHz) Lower Upper 0.1 150 0.1 100 0.1 100 0.1 100 0.1 100 0.1 100 0.1 80 0.1 80 0.1 60 0.1 50 0.1 30 0.1 20 0.1 20 0.1 12 0.1 10 0.1 10 0.1 10 0.1 7 0.1 6 0.1 6 0.1 4 LVAR Coefficients R1 () 280 400 240 160 100 60 20 45 40 25 70 280 200 350 440 450 380 440 350 640 460 R2 () 0.072 0.100 0.125 0.175 0.240 0.255 0.350 0.500 0.670 1.05 1.40 2.00 3.10 3.50 4.25 6.25 8.60 12.7 15.7 20.0 28.0 C (pF) 1.28 1.18 1.20 1.15 1.38 1.37 1.31 1.47 1.63 1.54 1.99 1.49 1.95 2.12 2.31 2.19 2.55 2.42 2.32 1.92 2.51 k1k2 k3 2.40E-04 0.35 1.5 2.00E-04 0.45 2.2 4.50E-04 0.82 3.3 2.50E-04 0.97 4.7 4.00E-05 1.25 5.6 5.00E-04 1.38 6.8 8.00E-04 1.75 10 2.00E-04 3.20 15 1.00E-04 4.25 22 2.00E-05 6.00 33 2.00E-05 9.00 47 1.00E-05 13.0 68 8.00E-05 24.0 100 3.80E-04 28.0 120 2.80E-04 36.0 150 1.80E-04 42.0 220 7.40E-04 82.0 330 5.40E-04 120 470 4.00E-04 200 560 2.00E-03 240 680 7.00E-04 440 1000 k4 0.027 0.051 0.090 0.11 0.13 0.17 0.26 0.35 0.44 0.61 0.66 0.69 0.70 0.72 0.75 0.80 0.96 1.2 1.8 2.8 3.0 k5 9.20E-06 9.60E-06 9.60E-06 9.75E-06 9.95E-06 9.66E-06 9.60E-06 9.90E-06 9.92E-06 9.94E-06 9.94E-06 9.93E-06 1.00E-05 1.00E-05 1.01E-05 1.02E-05 1.09E-05 1.16E-05 1.16E-05 1.12E-05 1.38E-05 Document 267-76 Revised 08/0211