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SI4434DY-RC Datasheet(PDF) 1 Page - Vishay Siliconix

Part # SI4434DY-RC
Description  R-C Thermal Model Parameters
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Manufacturer  VISHAY [Vishay Siliconix]
Direct Link  http://www.vishay.com
Logo VISHAY - Vishay Siliconix

SI4434DY-RC Datasheet(HTML) 1 Page - Vishay Siliconix

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Vishay Siliconix
Si4434DY_RC
Document Number: 74096
Revision 31-Aug-05
www.vishay.com
1
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
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.
R-C VALUES FOR TANK CONFIGURATION
Thermal Resistance (°C/W)
Junction to
Ambient
Case
Foot
RT1
4.6811
N/A
891.0923 m
RT2
22.4894
N/A
4.0712
RT3
38.0947
N/A
10.1982
RT4
14.3700
N/A
5.7147
Thermal Capacitance (Joules/°C)
Junction to
Ambient
Case
Foot
CT1
4.7707 m
N/A
1.3179 m
CT2
35.3707 m
N/A
17.9041 m
CT3
2.0586
N/A
142.5144 m
CT4
300.2025 m
N/A
27.2659 m


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