ise-tcad不收敛

beatlin · 发表于 2008-6-5 22:54:12

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请问在座各位老师前辈，用ISE——tcad仿真 mix-mode模式不收敛怎么办？我的步长已经改得很小了，是不是我的程序有问题？我把远程序贴上来大家一起帮我看看吧！死活就是不收敛！就是看ESD对SCR的反映了
Device SCR{
   Electrode {
   { name="A" voltage=0.0  }
   { name="K"    voltage=0.0 }
   }
Thermode {
{ name="A"    temperature=300 }
{ name="K"    temperature=300 }
  }
File {
Grid = "SCR_mdr.grd"
Doping  = "SCR_mdr.dat"
Plot = "SCR_des.dat"
Current = "SCR_des.plt"
   }

Physics {
   Hydrodynamic(eTemperature )
   EffectiveIntrinsicDensity(oldSlotboom)
   Mobility(DopingDep
      eHighFieldSaturation(CarrierTempDrive)
      hHighFieldSaturation(GradQuasiFermi)
      Enormal
      CarrierCarrierScattering)
Recombination (
   SRH(DopingDependence TempDependence)
   Auger
   TrapAssistedAuger
   Avalanche(VanOverstraeten CarrierTempDrive)
   Band2Band
   )
}
}

System{

         SCR scr1 ("A"=n1 "K"=n0)
   Capacitor_pset C1  ( n2 n0 ) { capacitance = 1e-10 }
   Resistor_pset  R1  ( n1 n2 ) { resistance  = 1.5e3 }

      Set(n0=0)

         Set(n2=3000)
         plot "nodes.plt"(time() n0 n1 n2)
}
File{
   Current="ESD"
   Output="ESD"
}
Plot {
eDensity hDensity
eCurrent hCurrent
ElectricField
eEnormal hEnormal
eQuasiFermi hQuasiFermi
Potential Doping SpaceCharge
SRH Auger Avalanche
eMobility hMobility
DonorConcentration AcceptorConcentration
Temperature
}

Math {
Iterations =20
NotDamped =50
Derivatives
AvalDerivatives
Extrapolate
NewDiscretization
RelErrControl
*BreakCriteria{LatticeTemperature (maxval=1580)}
}

Solve {
  Coupled { Circuit Poisson Electron Hole Temperature}

Unset(n2)
Transient(
   InitialTime=0 FinalTime=10e-09
   InitialStep=1e-19 MaxStep=1e-10 MinStep=1e-20
   Increment=1.2
      )
{Coupled{ poisson electron hole Temperature Circuit }}
}

[ 本帖最后由 beatlin 于 2008-6-5 23:01 编辑 ]