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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 44.0773 31.2189 265.2248 119.4790 Ambient 1.4079 147.3951 u 3.2833 m 919.9911 u Case N / A N / A N / A N / A Case N / A N / A N / A N / A Foot 86.4684 127.1242 117.3069 19.1005 Foot 572.6423 u 5.2228 m 2.8820 m 44.2333 u
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: 68303 Revision: 19-Dec-07
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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 100.3782 251.2865 71.8884 36.4469 Ambient 227.1993 u 1.4212 m 19.6820 m 2.1078
Foot 20.1651 146.1682 133.4933 50.1734 Foot 41.8899 u 388.0249 u 2.2720 m 133.3266 u
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: 68303 Revision: 19-Dec-07
Vishay Siliconix
Document Number: 68303 Revision: 19-Dec-07
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