Si7682DP-RC

Si7682DP_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)
Foot
Junction to
Ambient
Case
RT1
8.5249 m
137.0052 m
N/A
RT2
68.1623 m
164.8549 m
N/A
RT3
234.4992 m
158.3985 m
N/A
RT4
686.7862 m
540.1760 m
N/A
Thermal Capacitance (Joules/°C)
Junction to
Ambient
Case
Foot
CT1
27.0132 µ
4.8100 m
N/A
CT2
416.7856 m
111.9111 m
N/A
CT3
5.7899
1.4916
N/A
CT4
91.0623
124.6333 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: 73643
Revision 06-Dec-05
www.vishay.com
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Si7682DP_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
82.9260 m
192.9603 m
N/A
RF2
253.7706 m
337.6448 m
N/A
RF3
332.7713 m
265.2590 m
N/A
RF4
328.2689 m
200.3314 m
N/A
Thermal Capacitance (Joules/°C)
Junction to
Ambient
Case
Foot
CF1
381.5162 m
5.2422 m
N/A
CF2
4.9568
64.4907 m
N/A
CF3
87.1426
22.2465 m
N/A
CF4
2.1623
443.9172 m
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
www.vishay.com
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Document Number: 73643
Revision 06-Dec-05
Si7682DP_RC
Vishay Siliconix
Document Number: 73643
Revision 06-Dec-05
www.vishay.com
3