About SPICE MODEL of PTC(Positive Temperature Coefficient)
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This document discusses two types of SPICE models for modeling PTC (Positive Temperature Coefficient) devices: 1) SPICE models for transient analysis, which allow changing temperature over time to analyze the device's influence on a circuit, and 2) SPICE models for thermal analysis, which set temperature using the SPICE simulator to model how temperature affects the device's resistance. The models for transient analysis can import temperature profiles over time from CSV data, while the models for thermal analysis are verified to accurately simulate the relationship between temperature and resistance.
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About SPICE MODEL of PTC(Positive Temperature Coefficient)
- 1. About SPICE MODEL of PTC(Positive Temperature Coefficient) 06APR2015 Bee Technologies http://www.bee-tech.info/ 1Copyright (C) Siam Bee Technologies 2015
- 2. SPICE MODEL of PTC SPICE MODEL for Transient Analysis SPICE Model for Thermal Analysis PTC has 2 type Spice Model 2Copyright (C) Siam Bee Technologies 2015
- 3. SPICE MODEL for Transient Analysis Changing the temperature by a time axis in optional transient analysis, and when analyzing the influence by which PTC gives it to a circuit. There are a lot of cases used by this case. TEMP1 TEMP2 1 2 U1 3Copyright (C) Siam Bee Technologies 2015 VPWL CSV Data(Excel Data)
- 4. 0 TEMP1 TEMP2 1 2 U1 0 VTEMP 0Vdc RL 1MEG It's possible to make a profile of the temperature reflected in Voltage Source of VTEMP. A profile of the temperature in time can be input by CSV data. 4Copyright (C) Siam Bee Technologies 2015 SPICE MODEL for Transient Analysis
- 5. 5Copyright (C) Siam Bee Technologies 2015 SPICE MODEL for Transient Analysis
- 6. SPICE Model for Thermal Analysis The SPICE model using Thermal Analysis is quite special. Temperature setting is established by a simulator of SPICE. V1 1V 0 IN SENSE 0 U1 SMD1812P050TF-30 12 6Copyright (C) Siam Bee Technologies 2015
- 7. 1.00E-01 1.00E+00 1.00E+01 1.00E+02 1.00E+03 1.00E+04 1.00E+05 1.00E+06 0 40 80 120 160 200 Resistance[Ω] Temperature [ C] Measurement Simulation 7Copyright (C) Siam Bee Technologies 2015 SPICE Model for Thermal Analysis