Si1499DH-RC

Si1499DH_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
18.0498
N/A
22.8576
RT2
13.5465
N/A
6.8294
RT3
37.3879
N/A
6.2761
RT4
56.0158
N/A
9.0369
Thermal Capacitance (Joules/°C)
Junction to
Ambient
Case
Foot
CT1
129.6988 m
N/A
1.3960 m
CT2
321.1174 u
N/A
181.6222 u
CT3
3.9039 m
N/A
273.9235 m
CT4
1.5540
N/A
11.2394 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: 74809
Revision: 19-Jul-07
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Si1499DH_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
15.6843
N/A
5.3345
RF2
36.9662
N/A
5.7488
RF3
19.0906
N/A
26.8876
RF4
53.2589
N/A
7.0291
Thermal Capacitance (Joules/°C)
Junction to
Ambient
Case
Foot
CF1
305.6295 u
N/A
110.7145 u
CF2
3.4551 m
N/A
352.3051 u
CF3
112.9520 m
N/A
1.0915 m
CF4
1.5143
N/A
168.0905 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: 74809
Revision: 19-Jul-07
Si1499DH_RC
Vishay Siliconix
Document Number: 74809
Revision: 19-Jul-07
www.vishay.com
3