SiHG47N60S_RC www.vishay.com Vishay Siliconix 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 P-SPICE, 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 P-SPICE 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 P-SPICE 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 Foot RT1 n/a 46.1657m n/a RT2 n/a 79.3411m n/a RT3 n/a 58.9292m n/a RT4 n/a 115.5640m n/a Junction to Ambient Case Foot CT1 n/a 995.3079m n/a CT2 n/a 573.2441m n/a CT3 n/a 93.9680m n/a CT4 n/a 5.2389m n/a THERMAL CAPACITANCE (Joules/°C) 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: 12-Sep-11 1 Document Number: 90739 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 SiHG47N60S_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 RF1 n/a 133.3755m Foot n/a RF2 n/a 72.7442m n/a RF3 n/a 61.3480m n/a RF4 n/a 32.5323m n/a THERMAL CAPACITANCE (Joules/°C) Junction to Ambient Case Foot CF1 n/a 4.9561m n/a CF2 n/a 88.2375m n/a CF3 n/a 344.7316m n/a CF4 n/a 122.0071m n/a Note • n/a indicates not applicable Revision: 12-Sep-11 2 Document Number: 90739 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 SiHG47N60S_RC www.vishay.com Revision: 12-Sep-11 Vishay Siliconix 3 Document Number: 90739 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