Si8407DB-RC

Si8407DB_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
10.4526
N/A
1.8770
RT2
19.7498
N/A
11.8244
RT3
13.7958
N/A
182.8000 m
RT4
41.0018
N/A
5.1158
Thermal Capacitance (Joules/°C)
Junction to
Ambient
Case
Foot
CT1
1.0735 m
N/A
1.5762 m
2.4035 m
CT2
3.7703 m
N/A
CT3
409.7869 m
N/A
12.3188
CT4
2.0736
N/A
15.3613 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: 69279
Revision: 08-Aug-07
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Si8407DB_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
12.6462
N/A
8.8130
RF2
17.7656
N/A
9.1819
RF3
18.1505
N/A
762.1622 m
RF4
36.4377
N/A
242.9378 m
Thermal Capacitance (Joules/°C)
Junction to
Ambient
Case
Foot
CF1
730.9942 u
N/A
1.0532 m
CF2
2.5602 m
N/A
3.2146 m
CF3
317.2725 m
N/A
45.1916 m
CF4
1.9260
N/A
3.0159 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: 69279
Revision: 08-Aug-07
Si8407DB_RC
Vishay Siliconix
Document Number: 69279
Revision: 08-Aug-07
www.vishay.com
3