Thermal Model Parameters DESCRIPTION parametric values thermal mo
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Si4621DY_RC
Thermal Model Parameters
DESCRIPTION parametric values thermal model have been derived using curve-fitting techniques. These techniques described Simple Method Generating Thermal Models Power MOSFET"[1]. When implemented P-Spice, these values have matching characteristic curves Single Pulse Transient Thermal Impedance curves MOSFET.
values electrical circuit Foster/Tank Cauer/Filter configurations included.
Note:
detailed explanation implementing these values P-SPICE, refer Application Note AN609 Thermal Simulations Power MOSFETs P-SPICE Platform.
THERMAL MODEL TANK CONFIGURATION
VALUES TANK CONFIGURATION
Thermal Resistance (°C/W) Junction Junction Ambient Mosfet 5.7407 22.4526 35.2874 46.5193 Ambient Mosfet 391.8258 7.3908 50.6844 1.3716 Ambient Schottky 18.5197 17.2773 35.4608 43.7422 Ambient Schottky 64.9041 3.6401 31.3345 1.2455 Case Case Foot Mosfet 12.8956 3.7536 13.1181 10.2327 Foot Mosfet 134.3353 297.7361 5.1404 43.7374 Foot Schottky 14.4852 7.2459 9.9573 15.3116 Foot Schottky 92.0114 48.6379 666.1825 6.9648
Thermal Capacitance (Joules/°C)
This document intended SPICE modeling guideline does constitute commercial product data sheet. Designers should refer appropriate data sheet same number guaranteed specification limits.
Document Number: 69735 Revision: 02-Oct-07
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Si4621DY_RC
THERMAL MODEL FILTER CONFIGURATION
VALUES FILTER CONFIGURATION
Thermal Resistance (°C/W) Junction Junction
Note: indicates applicable
Ambient Mosfet 7.7511 27.1046 31.3650 43.7793 Ambient Mosfet 487.2994 6.6929 47.9992 1.4035
Ambient Schottky 20.4519 24.8031 28.6084 41.1366 Ambient Schottky 68.4422 4.6669 41.6149 1.2936
Case Case
Foot Mosfet 3.9925 4.7093 14.1123 17.1859 Foot Mosfet 306.3353 2.1131 3.9615 58.8460
Foot Schottky 8.2309 11.3266 16.4593 10.9832 Foot Schottky 44.5285 601.0970 7.1072 125.3721
Thermal Capacitance (Joules/°C)
Reference: Simple Method Generating Thermal Models Power MOSFET" Wharton McDaniel Kandarp Pandya, IEEE SEMITHERM 2002
www.vishay.com
Document Number: 69735 Revision: 02-Oct-07
Si4621DY_RC
Document Number: 69735 Revision: 02-Oct-07
www.vishay.com
Si4621DY_RC
www.vishay.com
Document Number: 69735 Revision: 02-Oct-07
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