Thermal Model Parameters DESCRIPTION parametric values thermal mo
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Si5857DU_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 24.9258 7.5912 19.9327 51.3141 Ambient Mosfet 2.8414 153.5979 56.4764 873.3419 Ambient Schottky 28.9221 7.3091 20.8323 52.5790 Ambient Schottky 1.4668 170.4317 32.1873 1.3431 Foot Foot Case Mosfet 3.5140 1.8960 203.4628 6.3864 Case Mosfet 216.1912 6.2984 28.4126 3.4802 Case Schottky 2.8054 4.9986 2.8538 5.2459 Case Schottky 472.9542 5.8552 83.4890 5.6057
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: 74274 Revision: 27-Jun-07
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Si5857DU_RC
THERMAL MODEL FILTER CONFIGURATION
VALUES FILTER CONFIGURATION
Thermal Resistance (°C/W) Junction Junction
Note: indicates applicable
Ambient Mosfet 9.0434 26.0161 19.8146 49.0116 Ambient Mosfet 160.3575 2.7414 52.7589 856.4066
Ambient Schottky 10.7289 29.1305 18.6173 51.4622 Ambient Schottky 182.4751 1.4610 37.8786 1.3486
Foot Foot
Case Mosfet 4.1435 6.5684 677.6384 639.9983 Case Mosfet 206.0856 1.9243 14.7848 1.5775
Case Schottky 3.8103 10.1214 812.8294 1.1347 Case Schottky 393.2769 2.7317 139.9564 77.1599
Thermal Capacitance (Joules/°C)
Reference: Simple Method Generating Thermal Models Power MOSFET" Wharton McDaniel Kandarp Pandya, IEEE SEMITHERM 2002
www.vishay.com
Document Number: 74274 Revision: 27-Jun-07
Si5857DU_RC
Document Number: 74274 Revision: 27-Jun-07
www.vishay.com
Si5857DU_RC
www.vishay.com
Document Number: 74274 Revision: 27-Jun-07
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