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SI4856ADY-RC Folha de dados(PDF) 1 Page - Vaishali Semiconductor |
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SI4856ADY-RC Folha de dados(HTML) 1 Page - Vaishali Semiconductor |
1 / 3 page Vishay Siliconix Si4856ADY_RC Document Number:74114 Revision 14-Nov-05 www.vishay.com 1 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 configuration are included. The corresponding values for the Cauer/Filter configuration are available upon request. 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 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. R-C VALUES FOR TANK CONFIGURATION Thermal Resistance (°C/W) Junction to Ambient Case Foot RT1 2.0053 N/A 468.2017 m RT2 20.8011 N/A 4.8276 RT3 28.2729 N/A 7.4177 RT4 28.8060 N/A 5.9020 Thermal Capacitance (Joules/°C) Junction to Ambient Case Foot CT1 1.6405 m N/A 2.0074 m CT2 24.4894 m N/A 39.9180 m CT3 358.8053 m N/A 189.7165 m CT4 2.5583 N/A 11.7115 m |
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