SiA411DJ-RC

SiA411DJ_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
11.6073
2.0544
N/A
RT2
5.5097
1.3706
N/A
RT3
17.8868
317.4000 m
N/A
RT4
44.9962
2.7576
N/A
Thermal Capacitance (Joules/°C)
Junction to
Ambient
Case
Foot
CT1
218.0785 m
1.1988 m
N/A
CT2
440.3552 u
194.0091 u
N/A
CT3
6.6195 m
34.1528 m
N/A
CT4
1.7908
1.0497 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: 69753
Revision: 05-Oct-07
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SiA411DJ_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
5.1725
3.1805
N/A
RF2
17.9817
3.2979
N/A
RF3
12.9513
20.4076 m
N/A
RF4
43.8945
1.1924 m
N/A
Thermal Capacitance (Joules/°C)
Junction to
Ambient
Case
Foot
CF1
309.3985 u
174.5173 u
N/A
CF2
5.0173 m
734.0575 u
N/A
CF3
130.8060 m
9.4367
N/A
CF4
1.6398
3.5631
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: 69753
Revision: 05-Oct-07
SiA411DJ_RC
Vishay Siliconix
Document Number: 69753
Revision: 05-Oct-07
www.vishay.com
3