SiB419DK_RC

SiB419DK_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
27.0713
1.9818
N/A
RT2
13.9534
1.4707
N/A
RT3
14.8827
3.1117
N/A
RT4
49.0926
2.9358
N/A
Thermal Capacitance (Joules/°C)
Junction to
Ambient
Case
Foot
CT1
5.0661 m
117.9294 u
N/A
CT2
260.9856 u
154.0489 u
N/A
CT3
391.3129 m
581.9782 u
N/A
CT4
2.2125
246.5084 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: 68331
Revision: 19-Dec-07
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SiB419DK_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
14.3660
2.5823
N/A
RF2
27.3222
4.5152
N/A
RF3
18.7728
1.0943
N/A
RF4
44.5390
1.3082
N/A
Thermal Capacitance (Joules/°C)
Junction to
Ambient
Case
Foot
CF1
221.9388 u
35.2139 u
N/A
CF2
4.4046 m
53.5437 u
N/A
CF3
315.7482 m
365.0170 u
N/A
CF4
2.0547
457.7854 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: 68331
Revision: 19-Dec-07
SiB419DK_RC
Vishay Siliconix
Document Number: 68331
Revision: 19-Dec-07
www.vishay.com
3