si7802dn-rc

Si7802DN_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)
Foot
Junction to
Ambient
Case
RT1
6.6678
568.5422 m
N/A
RT2
35.0895
257.4745 m
N/A
RT3
15.9838
76.2833 m
N/A
RT4
23.2589
1.4977
N/A
Thermal Capacitance (Joules/°C)
Junction to
Ambient
Case
Foot
CT1
7.2586 m
1.0022 m
N/A
N/A
CT2
2.5015
16.9938 m
CT3
50.2866 m
226.0908 m
N/A
CT4
2.3938
10.8229 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: 69245
Revision: 28-Jul-07
www.vishay.com
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Si7802DN_RC
Vishay Siliconix
R-C THERMAL MODEL FOR FILTER CONFIGURATION
R-C VALUES FOR FILTER CONFIGURATION
Thermal Resistance (°C/W)
Foot
Junction to
Ambient
Case
RF1
8.6271
687.6158 m
N/A
RF2
14.7288
670.6725 m
N/A
RF3
22.0958
718.4132 m
N/A
RF4
35.5483
323.2985 m
N/A
Thermal Capacitance (Joules/°C)
Junction to
Ambient
Case
Foot
CF1
6.2941 m
801.7716 u
N/A
CF2
44.3499 m
6.0245 m
N/A
CF3
961.8988 m
458.2224 u
N/A
CF4
689.3641 m
30.8864 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: 69245
Revision: 28-Jul-07
Si7802DN_RC
Vishay Siliconix
Document Number: 69245
Revision: 28-Jul-07
www.vishay.com
3