Si9407AEY-RC

Si9407AEY_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
18.2541
N/A
2.1100
RT2
10.9042
N/A
7.0820
RT3
3.5072
N/A
6.8889
RT4
52.6116
N/A
8.9502
Thermal Capacitance (Joules/°C)
Junction to
Ambient
Case
Foot
CT1
111.3046 m
N/A
3.0125 m
CT2
27.1060 m
N/A
46.5361 m
CT3
1.3344 m
N/A
147.3208 m
CT4
1.4981
N/A
5.2600 m
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: 73749
Revision 17-Jan-06
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Si9407AEY_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
4.4215
N/A
4.5957
RF2
14.6812
N/A
9.0439
RF3
16.7383
N/A
9.6950
RF4
49.4280
N/A
1.7639
Thermal Capacitance (Joules/°C)
Junction to
Ambient
Case
Foot
CF1
1.6090 m
N/A
1.5450 m
CF2
21.8444 m
N/A
3.9761 m
CF3
91.2122 m
N/A
39.6644 m
CF4
1.4926
N/A
733.7564 m
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: 73749
Revision 17-Jan-06
Si9407AEY_RC
Vishay Siliconix
Document Number: 73749
Revision 17-Jan-06
www.vishay.com
3