Si4463BDY_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 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 R-C VALUES FOR TANK CONFIGURATION Thermal Resistance (°C/W) Junction to Ambient Case Foot RT1 12.4145 N/A 6.9005 RT2 5.5325 N/A 1.7114 RT3 17.9828 N/A 5.2205 RT4 47.9591 N/A 7.1734 Thermal Capacitance (Joules/°C) Junction to Ambient Case Foot CT1 51.6626 m N/A 9.9576 m CT2 3.8480 m N/A 1.6896 m CT3 95.4066 m N/A 590.0730 m CT4 1.2945 N/A 103.8321 m 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: 70346 Revision 19-Mar-07 www.vishay.com 1 Si4463BDY_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 7.1123 N/A 1.7297 RF2 21.6802 N/A 8.3335 RF3 11.9787 N/A 7.8025 RF4 43.3749 N/A 3.1510 Thermal Capacitance (Joules/°C) Junction to Ambient Case Foot CF1 3.9704 m N/A 1.0495 m CF2 27.4275 m N/A 7.2549 m CF3 182.3145 m N/A 100.9652 m CF4 1.2432 N/A 595.1445 m 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: 70346 Revision 19-Mar-07 Si4463BDY_RC Vishay Siliconix Document Number: 70346 Revision 19-Mar-07 www.vishay.com 3