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R-C Thermal Model Parameters
Si7136DP_RC
Vishay Siliconix
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
RT1
2.0963
2.3554 m
RT2
9.0488
690.6627 m
RT3
8.0177
1.6922
RT4
50.6165
820.2806 m
Thermal Capacitance (Joules/°C)
Junction to
Ambient
Case
CT1
24.2344 m
136.5785 u
CT2
558.7573 m
595.8486 u
CT3
70.7495 m
9.9128 m
CT4
1.4435
8.8712 m
Foot
N/A
N/A
N/A
N/A
Foot
N/A
N/A
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: 73741
Revision 16-Jan-06
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Si7136DP_RC
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R-C THERMAL MODEL FOR FILTER CONFIGURATION
R-C VALUES FOR FILTER CONFIGURATION
Thermal Resistance (°C/W)
Junction to
Ambient
Case
RF1
5.3871
657.3010 u
RF2
10.2337
1.0857
RF3
17.6421
1.1764
RF4
36.7131
935.2605 m
Thermal Capacitance (Joules/°C)
Junction to
Ambient
Case
CF1
15.7961 m
388.4781 u
CF2
98.5875 m
322.0178 u
CF3
538.0285 m
5.2085 m
CF4
1.3275
2.4604 m
Note: NA indicates not applicable
Foot
N/A
N/A
N/A
N/A
Foot
N/A
N/A
N/A
N/A
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: 73741
Revision 16-Jan-06

No Preview Available !

Si7136DP_RC
Vishay Siliconix
Document Number: 73741
Revision 16-Jan-06
www.vishay.com
3