Si7326DN-RC

Si7326DN_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
6.3690
1.7313
N/A
RT2
33.6842
1.5591
N/A
RT3
15.3620
1.2626
N/A
RT4
25.5848
1.4470
N/A
Thermal Capacitance (Joules/°C)
Junction to
Ambient
Case
Foot
CT1
6.4281 m
5.1735 m
N/A
CT2
3.9763
5.7461 m
N/A
CT3
47.4607 m
384.0234 u
N/A
CT4
1.3816
22.7784 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: 69739
Revision: 02-Oct-07
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Si7326DN_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
6.9017
907.8400 m
N/A
RF2
15.4608
1.4099
N/A
RF3
29.2926
2.8276
N/A
RF4
29.3449
854.6600 m
N/A
Thermal Capacitance (Joules/°C)
Junction to
Ambient
Case
Foot
CF1
4.9012 m
260.6296 u
N/A
CF2
34.9790 m
591.0574 u
N/A
CF3
829.1860 m
2.2795 m
N/A
CF4
2.4232
25.4750 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
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Document Number: 69739
Revision: 02-Oct-07
Si7326DN_RC
Vishay Siliconix
Document Number: 69739
Revision: 02-Oct-07
www.vishay.com
3