Si3434DV-RC

Si3434DV_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
9.0596
N/A
3.0596
RT2
10.4825
N/A
6.6267
RT3
34.9521
N/A
9.6100
RT4
55.3377
N/A
10.8368
Thermal Capacitance (Joules/°C)
Junction to
Ambient
Case
Foot
CT1
1.2529 m
N/A
539.1091 u
CT2
269.9715 m
N/A
8.8348 m
CT3
7.6456 m
N/A
29.9287 m
CT4
1.4475
N/A
5.1893 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: 73757
Revision 19-Jan-06
www.vishay.com
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Si3434DV_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
5.9193
N/A
3.4602
RF2
26.0868
N/A
10.4852
RF3
22.4318
N/A
10.9596
RF4
55.0698
N/A
5.0732
Thermal Capacitance (Joules/°C)
Junction to
Ambient
Case
Foot
CF1
549.2082 u
N/A
393.2062 u
CF2
3.3792 m
N/A
2.3568 m
CF3
30.0263 m
N/A
754.3611 u
CF4
1.3573
N/A
50.3120 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: 73757
Revision 19-Jan-06
Si3434DV_RC
Vishay Siliconix
Document Number: 73757
Revision 19-Jan-06
www.vishay.com
3