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R-C Thermal Model Parameters

R-C values for the electrical circuit in the Foster / Tank and Cauer / Filter configurations are included.

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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 7.1986 24.9213 25.4991 52.0124 Ambient 390.3464 u 4.1885 m 33.8390 m 1.4069 Case N / A N / A N / A N / A Case N / A N / A N / A N / A Foot 8.5742 3.4749 9.3803 14.5718 Foot 11.3811 m 2.5353 m 219.3568 m 28.4424 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: 73753 Revision 19-Jan-06
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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 9.3331 26.7812 22.7029 50.7474 Ambient 415.8420 u 3.2741 m 29.9366 m 1.4147
Foot 4.8884 12.2204 14.9583 3.9756 Foot 2.0186 m 4.5127 m 27.5978 m 666.2334 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
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Document Number: 73753 Revision 19-Jan-06
Vishay Siliconix
Document Number: 73753 Revision 19-Jan-06
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