Si7214DN-RC

Si7214DN_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
13.7825
773.3427 m
N/A
RT2
12.9709
1.1877
N/A
RT3
11.9353
1.4755
N/A
RT4
55.1068
1.9678
N/A
Thermal Capacitance (Joules/°C)
Junction to
Ambient
Case
Foot
CT1
11.0393 m
272.2830 u
N/A
CT2
106.1373 m
5.2253 m
N/A
CT3
668.0599 u
3.1851 m
N/A
CT4
1.5189
1.2049 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: 70401
Revision 21-Mar-07
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Si7214DN_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
8.7016
954.2634 m
N/A
RF2
17.0522
1.6818
N/A
RF3
14.2584
1.4493
N/A
RF4
53.5830
1.3030
N/A
Thermal Capacitance (Joules/°C)
Junction to
Ambient
Case
Foot
CF1
373.6160 u
175.2301 u
N/A
CF2
4.2701 m
348.5475 u
N/A
CF3
80.7684 m
726.3561 u
N/A
CF4
1.4517
231.2620 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: 70401
Revision 21-Mar-07
Si7214DN_RC
Vishay Siliconix
Document Number: 70401
Revision 21-Mar-07
www.vishay.com
3