Si4362DY_RC Vishay Siliconix 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 configuration are included. The corresponding values for the Cauer/Filter configuration are available upon request. 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 R-C VALUES FOR TANK CONFIGURATION Thermal Resistance (°C/W) Junction to Ambient Case Foot RT1 20.4296 N/A 5.0806 RT2 28.4182 N/A 1.4103 RT3 5.5776 N/A 3.5572 RT4 25.5405 N/A 5.9561 Junction to Ambient Case Foot CT1 64.5972 m N/A 119.9260 m CT2 2.4971 N/A 106.5321 m CT3 26.8398 m N/A 13.9221 m CT4 3.3254 N/A 339.1358 m Thermal Capacitance (Joules/°C) 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. Document Number: 73729 Revision 13-Jan-06 www.vishay.com 1 Si4362DY_RC Vishay Siliconix R-C THERMAL MODEL FOR FILTER CONFIGURATION R-C VALUES FOR FILTER CONFIGURATION Thermal Resistance (°C/W) Junction to Ambient Case Foot RF1 7.7654 N/A 4.7871 RF2 17.8906 N/A 3.9192 RF3 28.3863 N/A 6.5521 RF4 26.3273 N/A 755.2501 m Thermal Capacitance (Joules/°C) Junction to Ambient Case Foot CF1 16.7691 m N/A 10.3395 m CF2 43.2305 m N/A 32.2002 m CF3 937.8379 m N/A 127.3779 m CF4 1.8165 N/A 3.8073 Note: NA indicates not applicable Reference: [1] "A Simple Method of Generating Thermal Models for a Power MOSFET" by Wharton McDaniel and Kandarp Pandya, IEEE / SEMITHERM 2002 www.vishay.com 2 Document Number: 73729 Revision 13-Jan-06 Si4362DY_RC Vishay Siliconix Document Number: 73729 Revision 13-Jan-06 www.vishay.com 3