Si1065X_RC

Si1065X_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
219.6709
N/A
N/A
RT2
48.4012
N/A
N/A
RT3
151.3088
N/A
N/A
RT4
230.6191
N/A
N/A
Thermal Capacitance (Joules/°C)
Junction to
Ambient
Case
Foot
CT1
49.0316 m
N/A
N/A
CT2
15.0301 m
N/A
N/A
CT3
777.0842 m
N/A
N/A
CT4
29.6834 m
N/A
N/A
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: 68307
Revision: 19-Dec-07
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Si1065X_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
99.5138
N/A
N/A
RF2
220.7992
N/A
N/A
RF3
189.5926
N/A
N/A
RF4
140.0944
N/A
N/A
Thermal Capacitance (Joules/°C)
Junction to
Ambient
Case
Foot
CF1
7.0154 m
N/A
N/A
CF2
11.0921 m
N/A
N/A
CF3
2.8720 m
N/A
N/A
CF4
765.2724 m
N/A
N/A
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
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Document Number: 68307
Revision: 19-Dec-07
Si1065X_RC
Vishay Siliconix
Document Number: 68307
Revision: 19-Dec-07
www.vishay.com
3