SiB411DK-RC

SiB411DK_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
26.9628
1.1278 m
N/A
RT2
13.8449
51.4366 m
N/A
RT3
14.7742
4.9136
N/A
RT4
48.9841
4.5126
N/A
Thermal Capacitance (Joules/°C)
Junction to
Ambient
Case
Foot
CT1
4.3960 m
5.4337 u
N/A
N/A
CT2
254.1818 u
1.1487 m
CT3
289.7400 m
65.6663 u
N/A
CT4
1.6281
333.4860 u
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: 70412
Revision 22-Mar-07
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SiB411DK_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
14.2399
2.7390
N/A
RF2
26.7266
4.8531
N/A
RF3
18.7649
148.0174 m
N/A
RF4
45.2590
1.7445
N/A
Junction to
Ambient
Case
Foot
CF1
218.1370 u
32.0113 u
N/A
CF2
3.6830 m
77.9062 u
N/A
CF3
208.5424 m
542.5600 u
N/A
CF4
1.5514
15.9892 u
N/A
Thermal Capacitance (Joules/°C)
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: 70412
Revision 22-Mar-07
SiB411DK_RC
Vishay Siliconix
Document Number: 70412
Revision 22-Mar-07
www.vishay.com
3