Si7192DP_RC

Si7192DP_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
7.4196
348.4044 m
N/A
RT2
2.1814
354.8360 m
N/A
RT3
12.1505
345.7792 m
N/A
RT4
32.2485
150.9804 m
N/A
Thermal Capacitance (Joules/°C)
Junction to
Ambient
Case
Foot
CT1
106.1714 m
25.7863 m
N/A
CT2
21.0646 m
81.7383 m
N/A
CT3
1.2519
309.8845 m
N/A
CT4
3.2293
1.0267 m
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: 69926
Revision: 12-Dec-07
www.vishay.com
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Si7192DP_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
3.5655
173.7148 m
N/A
RF2
7.9531
554.4925 m
N/A
RF3
20.7479
233.8971 m
N/A
RF4
21.7335
237.8956 m
N/A
Thermal Capacitance (Joules/°C)
Junction to
Ambient
Case
Foot
CF1
18.9463 m
1.1765 m
N/A
CF2
95.2321 m
17.7066 m
N/A
CF3
827.8730 m
53.3298 m
N/A
CF4
3.8092
297.9412 m
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: 69926
Revision: 12-Dec-07
Si7192DP_RC
Vishay Siliconix
Document Number: 69926
Revision: 12-Dec-07
www.vishay.com
3