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SI4496DY Scheda tecnica(PDF) 1 Page - Vishay Siliconix |
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SI4496DY Scheda tecnica(HTML) 1 Page - Vishay Siliconix |
1 / 3 page Vishay Siliconix Si4496DY_RC Document Number: 74109 Revision 02-Sep-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 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 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 2.3490 N/A 250.9288 m RT2 29.5589 N/A 6.7329 RT3 32.0670 N/A 9.1880 RT4 26.1202 N/A 1.7701 Thermal Capacitance (Joules/°C) Junction to Ambient Case Foot CT1 1.1969 m N/A 563.0696 µ CT2 32.0544 m N/A 13.6449 m CT3 1.4071 N/A 174.2752 m CT4 3.6901 N/A 4.8071 m |
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