SIMPLORER User Manual V6.0 - FER-a

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5
142 Modeling with Circuit Components
The saturation voltage of the BJT model for normal mode follows from:
ISAT, N
TEMP_JNCT + 273K
ISAT0_BJT ⎛---------------------------------------------------- ⎞
⎝ TEMP0 + 273K ⎠
3
=
⋅ ⋅ e
The saturation voltage of the BJT model for inverse operation follows from:
ISAT, I
=
ISAT, N
B N
⋅ ------
B I
The model has a built-in fault detection. During the simulation the collector current and the
base current, the voltage drop across base-emitter and collector-emitter as well as the junction
temperature are observed. If their limitations are exceeded the model behavior changes.
The switches controlled by the FAULT flags are closed and the respective fault resistances
determine the model characteristic. Faults at the base do only effect RFAULT_BE. All other
faults effect the RFAULT_CE.
Component Parameters
VGAP TEMP_JNCT TEMP0
---------------- –
⎛ ⋅ ----------------------------------------------------------- ⎞
⎝ TEMP0 + 273K ⎠
Description [Unit] Parameter Name Data Type
Normal Current Gain BN0 real
Exponential Temperature Coefficient of BN ALPHA_BN real
Inverse Current Gain BI0 real
Exponential Temperature Coefficient of BI ALPHA_BI real
Early Voltage [V] VEARLY real
Exponential Temperature Coefficient of VEARLY ALPHA_VEARLY real
Ideality Factor of Base Junction M0 real
Exponential Temperature Coefficient of Base Junction Ideality
Factor
ALPHA_M real
Saturation Current of Base Junction [A] ISAT0 real
Exponential Temperature Coefficient of Base Junction Saturation
Current [A]
ALPHA_ISAT real
Bulk Resitance of Base Junction[Ω] RB0 real
Exponential Temperature Coefficient of Base Junction Bulk
Resistance
ALPHA_RB real
Band Gap Voltage [V] VGAP real
Collector Connector Resistance [Ω] RC real
Base Connector Resistance [Ω] RB real
Emitter Connector Resistance [Ω] RE real
Reference Temperature [°C] TEMP0 real
Breakthrough Collector-Emitter Voltage [V] VBREAK_CE real
Breakthrough Base-Emitter Voltage [V] VBREAK_BE real
Breakthrough Collector Current [A] IBREAK_C real
Breakthrough Base Current [A] IBREAK_B real
Breakthrough Junction Temperature [°C] TEMPBREAK real
Collector-Emitter Resistance after Fault [Ω] RFAULT_CE real
Base-Emitter Resistance after Fault [Ω] RFAULT_BE real
V T