SIMPLORER User Manual V6.0 - FER-a

Electrical Behavior Level, Type DYN=0
Static diode current:
V – I⋅RB ------------------------
⎛ M ⋅ VT ⎞
k ⋅ ( TEMP_JNCT + 273K)
I = IS⋅⎜e – 1⎟
VT= -----------------------------------------------------------------
⎝ ⎠
q
SIMPLORER 6.0 — Manual 123
k = Boltzmann constant (1.381E-23) q = Elementary charge (1.602E-19)
Saturation current:
The saturation current is calculated from the given saturation current at reference temperature
TEMP0 and the actual junction temperature TEMP_JNCT.
TEMP_JNCT + 273K
IS ISAT0 ⎛---------------------------------------------------- ⎞
⎝ TEMP0 + 273K ⎠
3
= ⋅ ⋅ e
Component Parameters
Description [Unit] Parameter Name Data Type
Saturation Current at Tc0 [A] ISAT0 real
Ideality Factor [/] M0 real
Linear Temperature Coefficient of M [/] ALPHA_M real
Bulk Resistance [Ω] RB0 real
Exponentail Temperature Coefficient [/] ALPHA_RB real
Bandgap Voltage, Si 1.1 [V] VGAP real
Reference Temperature [°C] TEMP0 real
Breakthrough Voltage [V] VBREAK real
Breakthrough Current [V] IBREAK real
Breakthrough Junction Temperature [°C] TEMPBREAK real
Resistance Anode-Cathode after Fault RFAULT real
Electrical Behavior Level, Type DYN=1
q ⋅ VGAP TEMP_JNCT TEMP0
----------------------------------------------------------------k
⋅ ( TEMP_JNCT + 273K)
–
⎛ ⋅ ----------------------------------------------------------- ⎞
⎝ TEMP0 + 273K ⎠
Junction capacitance:
There is a distincion between the calculation of depletion and enhancement capacitance behavior.
The curves remain differentiable even at the transition from one region to the other.
The transition happens if the junction voltage is less than 0 V.
If the junction voltage is greater than 0 V, the following equation is used:
VJUNCT ⋅ ALPHA ⋅ ( 1 – DELTA)
⎛ – ⎛------------------------------------------------------------------------------------ ⎞⎞
⎝ VDIFF
⎠
CJNCT = C0JNCT ⋅ ⎜2– e
⎟
⎜ ⎟
⎝ ⎠
If the junction capacitance is negative (depletion region), the following equation is used:
CJNCT C0JNCT DELTA
1 – DELTA
⎛
1– VJUNCT ---------------------------- ⎞
⎝ VDIFF ⎠
ALPHA
⎛ ⎞
⎜ ⎟
=
⋅ ⎜ + --------------------------------------------------- ⎟
⎜ ⎟
⎝ ⎠