Si7964DP-RC

SI7964DP_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
4.3079
238.6633 m
N/A
RT2
7.4677
291.1519 m
N/A
RT3
13.8423
1.1148
N/A
RT4
58.8764
1.0727
N/A
Thermal Capacitance (Joules/°C)
Junction to
Ambient
Case
Foot
CT1
5.2101 m
266.7345 m
N/A
CT2
42.1039 m
5.0160
N/A
CT3
173.3669 m
1.1623 m
N/A
CT4
1.0551
8.8689 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: 73706
Revision 10-Jan-06
www.vishay.com
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SI7964DP_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
6.8528
1.3023
N/A
RF2
11.7756
686.0837 m
N/A
RF3
14.1535
452.3654 m
N/A
RF4
51.9506
262.6024 m
N/A
Thermal Capacitance (Joules/°C)
Junction to
Ambient
Case
Foot
CF1
5.3726 m
982.6144 u
N/A
CF2
40.8226 m
7.1323 m
N/A
CF3
205.7289 m
25.0532 m
N/A
CF4
943.3135 m
5.7964
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: 73706
Revision 10-Jan-06
SI7964DP_RC
Vishay Siliconix
Document Number: 73706
Revision 10-Jan-06
www.vishay.com
3