Si7636DP-RC

Si7636DP_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
6.7954
82.2060 m
N/A
RT2
3.1439
320.5989 m
N/A
RT3
12.5036
701.0328 m
N/A
RT4
42.1013
694.6344 m
N/A
Thermal Capacitance (Joules/°C)
Junction to
Ambient
Case
Foot
CT1
105.4856 m
52.2996 u
N/A
CT2
12.8320 m
9.5140 m
N/A
CT3
438.9719 m
63.7348 m
N/A
CT4
1.9645
65.9384 m
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: 70392
Revision 21-Mar-07
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Si7636DP_RC
Vishay Siliconix
R-C THERMAL MODEL FOR FILTER CONFIGURATION
R-C VALUES FOR FILTER CONFIGURATION
Thermal Resistance (°C/W)
Foot
Junction to
Ambient
Case
RF1
2.0088
380.3937 m
N/A
RF2
10.1064
404.1361 m
N/A
RF3
17.6738
607.7460 m
N/A
RF4
34.9414
408.2572 m
N/A
Thermal Capacitance (Joules/°C)
Junction to
Ambient
Case
Foot
CF1
5.0738 m
3.5541 m
N/A
CF2
45.8111 m
13.4185 m
N/A
CF3
349.7810 m
24.1383 m
N/A
CF4
2.0369
31.7294 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: 70392
Revision 21-Mar-07
Si7636DP_RC
Vishay Siliconix
Document Number: 70392
Revision 21-Mar-07
www.vishay.com
3