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SI4434DY-RC Datasheet(PDF) 1 Page - Vishay Siliconix |
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SI4434DY-RC Datasheet(HTML) 1 Page - Vishay Siliconix |
1 / 3 page Vishay Siliconix Si4434DY_RC Document Number: 74096 Revision 31-Aug-05 www.vishay.com 1 R-C Thermal Model Parameters DESCRIPTION The parametric values in the R-C thermal model have been derived using curve-fitting techniques. These techniques are described in "A Simple Method of Generating Thermal Models for a Power MOSFET"[1]. When implemented in P-Spice, these values have matching characteristic curves to the Single Pulse Transient Thermal Impedance curves for the MOSFET. R-C values for the electrical circuit in the Foster/Tank and Cauer/Filter configurations are included. Note: For a detailed explanation of implementing these values in P-SPICE, refer to Application Note AN609 Thermal Simulations Of Power MOSFETs on P-SPICE Platform. R-C THERMAL MODEL FOR TANK CONFIGURATION This document is intended as a SPICE modeling guideline and does not constitute a commercial product data sheet. Designers should refer to the appropriate data sheet of the same number for guaranteed specification limits. R-C VALUES FOR TANK CONFIGURATION Thermal Resistance (°C/W) Junction to Ambient Case Foot RT1 4.6811 N/A 891.0923 m RT2 22.4894 N/A 4.0712 RT3 38.0947 N/A 10.1982 RT4 14.3700 N/A 5.7147 Thermal Capacitance (Joules/°C) Junction to Ambient Case Foot CT1 4.7707 m N/A 1.3179 m CT2 35.3707 m N/A 17.9041 m CT3 2.0586 N/A 142.5144 m CT4 300.2025 m N/A 27.2659 m |
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