sib911dk-rc

SiB911DK_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
24.7202
17.0285
N/A
RT2
36.0217
10.9462
N/A
RT3
32.5543
302.0000 m
N/A
RT4
31.7038
11.7233
N/A
Thermal Capacitance (Joules/°C)
Junction to
Ambient
Case
Foot
CT1
33.8005 u
236.4599 u
N/A
CT2
730.9573 m
575.8540 u
N/A
CT3
480.9535 u
677.7926 m
N/A
CT4
7.2586 m
41.2419 u
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: 69755
Revision: 05-Oct-07
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SiB911DK_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
32.5774
14.8268
N/A
RF2
36.3650
19.3796
N/A
RF3
21.9662
5.6687
N/A
RF4
34.0914
124.9000 m
N/A
Thermal Capacitance (Joules/°C)
Junction to
Ambient
Case
Foot
CF1
36.0236 u
29.3109 u
N/A
CF2
734.2795 u
123.6870 u
N/A
CF3
15.7342 m
813.3045 u
N/A
CF4
790.0923 m
278.1963 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: 69755
Revision: 05-Oct-07
SiB911DK_RC
Vishay Siliconix
Document Number: 69755
Revision: 05-Oct-07
www.vishay.com
3