SI3865BDV_RC

Si3865BDV_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 RT1 RT2 RT3 RT4 Junction to CT1 CT2 CT3 CT4 Ambient 33.8552 12.6665 45.1479 58.3304 Ambient 42.1566 m 991.9905 u 4.2421 m 1.5421 Case N/A N/A N/A N/A Case N/A N/A N/A N/A Foot N/A N/A N/A N/A Foot N/A N/A N/A N/A 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: 74671 Revision: 07-May-07 www.vishay.com 1 Si3865BDV_RC Vishay Siliconix R-C THERMAL MODEL FOR FILTER CONFIGURATION R-C VALUES FOR FILTER CONFIGURATION Thermal Resistance (°C/W) Junction to RF1 RF2 RF3 RF4 Junction to CF1 CF2 CF3 CF4 Note: NA indicates not applicable Ambient 20.8114 50.2017 25.8363 53.1506 Ambient 836.0658 u 3.6694 m 84.8308 m 1.6722 Case N/A N/A N/A N/A Case N/A N/A N/A N/A Foot N/A N/A N/A N/A Foot N/A N/A N/A N/A Thermal Capacitance (Joules/°C) 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: 74671 Revision: 07-May-07 Si3865BDV_RC Vishay Siliconix Document Number: 74671 Revision: 07-May-07 www.vishay.com 3