Si7368DP-RC

Si7368DP_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
37.0478
607.2000 m
N/A
RT2
13.0052
1.0349
N/A
RT3
13.9287
1.3995
N/A
RT4
6.0183
1.4584
N/A
Thermal Capacitance (Joules/°C)
Junction to
Ambient
Case
Foot
CT1
2.0961
1.6559 m
N/A
CT2
105.8243 m
43.1677 m
N/A
CT3
2.4036
125.7930 m
N/A
CT4
8.7373 m
30.7373 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: 69207
Revision: 23-Jul-07
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Si7368DP_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
5.9544
896.7111 m
N/A
RF2
12.5333
907.5261 m
N/A
RF3
22.6582
2.2586
N/A
RF4
28.8541
437.1628 m
N/A
Thermal Capacitance (Joules/°C)
Junction to
Ambient
Case
Foot
CF1
6.5530 m
1.8472 m
N/A
CF2
66.7118 m
16.6692 m
N/A
CF3
646.5345 m
871.9487 u
N/A
CF4
1.7654
288.3437 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: 69207
Revision: 23-Jul-07
Si7368DP_RC
Vishay Siliconix
Document Number: 69207
Revision: 23-Jul-07
www.vishay.com
3