SI4416DY_RC

Si4416DY_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 6.4825 28.7773 27.8777 26.9568 Ambient 7.1415 m 54.8961 m 3.4923 2.1934 Case N/A N/A N/A N/A Case N/A N/A N/A N/A Foot 1.1102 4.7416 7.6570 6.4989 Foot 1.4261 m 95.7173 m 189.0677 m 6.3227 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: 74090 Revision 31-Aug-05 www.vishay.com 1 Si4416DY_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 3.4142 17.7659 17.8077 50.9042 Ambient 2.5888 m 25.7333 m 63.4122 m 1.4217 Case N/A N/A N/A N/A Case N/A N/A N/A N/A Foot 2.9807 7.0174 4.9680 4.9762 Foot 1.6244 m 7.0430 m 95.1579 m 16.3599 m 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: 74090 Revision 31-Aug-05 Si4416DY_RC Vishay Siliconix Document Number: 74090 Revision 31-Aug-05 www.vishay.com 3