SiHF21N60EF_RC

SiHF21N60EF_RC
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R-C Thermal Model Parameters
DESCRIPTION
The parametric values in the R-C thermal model have been
derived using curve-fitting techniques. R-C values for the
electrical circuit in the Foster/tank and Cauer/filter
configurations are included. When implemented in PSpice,
these values have matching characteristic curves to the
single-pulse transient thermal impedance curves for the
MOSFET.
These RC values can be used in the PSpice simulation to
evaluate the thermal behavior of the MOSFET junction
temperature under a defined power profile. These
techniques are described in application note AN609,
“Thermal Simulation of Power MOSFETs on the PSpice
Platform”.
R-C THERMAL MODEL FOR TANK CONFIGURATION
T (Junction)
RT1
RT2
RT3
RT4
CT1
CT2
CT3
CT4
T (Ambient)
R-C VALUES FOR TANK CONFIGURATION
THERMAL RESISTANCE (°C/W)
Junction to
Ambient
Case
RT1
n/a
1.1361
Foot
n/a
RT2
n/a
315.9106m
n/a
RT3
n/a
2.8378
n/a
RT4
n/a
144.1960m
n/a
Junction to
Ambient
Case
CT1
n/a
215.7263m
n/a
CT2
n/a
42.4634m
n/a
CT3
n/a
2.8577
n/a
CT4
n/a
1.5250m
n/a
THERMAL CAPACITANCE (Joules/°C)
Foot
Note
• n/a indicates not applicable


This document is intended as a SPICE modeling guideline and does not constitute a commercial product datasheet. Designers should refer to
the appropriate datasheet of the same number for guaranteed specification limits.
Revision: 09-Jan-14
1
Document Number: 91618
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
SiHF21N60EF_RC
www.vishay.com
Vishay Siliconix
R-C THERMAL MODEL FOR FILTER CONFIGURATION
T (Junction)
RF2
RF1
CF1
RF3
CF2
RF4
T (Ambient)
CF4
CF3
GND
R-C VALUES FOR FILTER CONFIGURATION
THERMAL RESISTANCE (°C/W)
Junction to
Ambient
Case
Foot
RF1
n/a
247.3651m
n/a
RF2
n/a
1.3770
n/a
RF3
n/a
2.3279
n/a
RF4
n/a
242.1635m
n/a
Junction to
Ambient
Case
Foot
CF1
n/a
1.8408m
n/a
CF2
n/a
110.6945m
n/a
CF3
n/a
2.4840
n/a
CF4
n/a
786.5107u
n/a
THERMAL CAPACITANCE (Joules/°C)
Note
• n/a indicates not applicable
Revision: 09-Jan-14
2
Document Number: 91618
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
SiHF21N60EF_RC
www.vishay.com
Revision: 09-Jan-14
Vishay Siliconix
3
Document Number: 91618
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000