Si4830ADY-RC

Si4830ADY_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
13.0656
N/A
9.3617
RT2
20.5465
N/A
2.3284
RT3
22.5226
N/A
10.2063
RT4
53.8653
N/A
18.1036
Thermal Capacitance (Joules/°C)
Junction to
Ambient
Case
Foot
CT1
3.3420 m
N/A
22.2638 m
CT2
33.6337 m
N/A
489.6651 u
CT3
96.9086 m
N/A
5.9249 m
CT4
1.6915
N/A
96.5142 m
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: 74622
Revision: 15-May-07
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Si4830ADY_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
14.8607
N/A
2.6845
RF2
25.5258
N/A
16.8421
RF3
18.1142
N/A
14.1159
RF4
51.4993
N/A
6.3575
Thermal Capacitance (Joules/°C)
Junction to
Ambient
Case
Foot
466.0878 u
CF1
2.8276 m
N/A
CF2
17.8677 m
N/A
3.9497 m
CF3
75.1793 m
N/A
42.3410 m
CF4
1.6685
N/A
337.6181 m
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: 74622
Revision: 15-May-07
Si4830ADY_RC
Vishay Siliconix
Document Number: 74622
Revision: 15-May-07
www.vishay.com
3