Si5480DU-RC

Si5480DU_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
5.5431
28.8945 m
N/A
RT2
19.4536
1.1108
N/A
RT3
15.0558
1.4224
N/A
RT4
48.9104
1.4419
N/A
Thermal Capacitance (Joules/°C)
Junction to
Ambient
Case
Foot
CT1
2.1071 m
686.5381 u
N/A
CT2
13.3149 m
190.7991 u
N/A
CT3
178.1937 m
1.3230 m
N/A
CT4
1.4793
1.2716 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: 73984
Revision: 20-Jun-07
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Si5480DU_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
6.1642
1.7953
N/A
RF2
22.2142
1.4822
N/A
RF3
16.1658
571.1917 m
N/A
RF4
44.3978
150.0745 m
N/A
Thermal Capacitance (Joules/°C)
Junction to
Ambient
Case
Foot
CF1
1.4684 m
145.1296 u
N/A
CF2
10.2828 m
578.5153 u
N/A
CF3
190.2916 m
867.6748 u
N/A
CF4
1.4192
38.2575 u
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: 73984
Revision: 20-Jun-07
Si5480DU_RC
Vishay Siliconix
Document Number: 73984
Revision: 20-Jun-07
www.vishay.com
3