Si7452DP-RC

Si7452DP_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
816.9183 m
324.4979 u
N/A
RT2
6.3753
286.9499 m
N/A
RT3
8.4873
251.3020 m
N/A
RT4
48.9947
762.3926 m
N/A
Thermal Capacitance (Joules/°C)
Junction to
Ambient
Case
Foot
CT1
1.3984 m
625.3748 u
N/A
CT2
49.9901 m
3.0330 m
N/A
CT3
294.4438 m
39.2410 m
N/A
CT4
1.3751
11.3185 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:73723
Revision 13-Jan-06
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Si7452DP_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
7.6597
250.0066 m
N/A
RF2
6.7288
255.7609 m
N/A
RF3
6.9255
578.7731 m
N/A
RF4
43.5775
214.5172 m
N/A
Junction to
Ambient
Case
Foot
CF1
27.3576 m
1.4941 m
N/A
CF2
220.2736 m
3.1793 m
N/A
CF3
30.2816 m
4.4688 m
N/A
CF4
1.3100
103.3651 u
N/A
Thermal Capacitance (Joules/°C)
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:73723
Revision 13-Jan-06
Si7452DP_RC
Vishay Siliconix
Document Number:73723
Revision 13-Jan-06
www.vishay.com
3