Agilent Technologies EasyEXPERT - Page 537

22 IGBT
22.7 Ic-Vge: IGBT Ic-Vge characteristics, SMU Pulse (A.04.00)
[Supported Analyzer]
B1505A
[Description]
Measures Ic-Vge characteristics. SMU pulse is used for the Collector-Emitter voltage output.
[Device Under Test]
IGBT, 3 terminals
[Device Parameters]
Polarity: Nch (SMUs force the specified value) or Pch (SMUs force the negative specified value).
Temp: Temperature
YAxisgfeMin: Y axis (gfe) minimum value
YAxisgfeMax: Y axis (gfe) maximum value
[Test Parameters]
Memo: Memorandum
Gate: SMU connected to Gate terminal, primary sweep voltage output
VgStart: Sweep start voltage for Gate terminal
VgStop: Sweep stop voltage for Gate terminal
VgStep: Sweep step voltage for Gate terminal
PulsePeriodMode: Pluse period mode, AUTO or MANUAL
ManualPulsePeriod: Pulse period, effective if PulsePeriodMode=MANUAL
PulseWidth: Pulse width
Collector: SMU connected to Collector terminal, secondary sweep voltage output
VcStart: Sweep start voltage for Collector terminal
VcStop: Sweep stop voltage for Collector terminal
VcPoint: Number of collector voltage sweep steps
Emitter: GNDU connected to Emitter terminal
IcLimit: Collector current compliance
[Extended Test Parameters]
PulseBase: Pulse base voltage
PulseAvgCnt: Pulse averaging count
IgLimit: Gate current compliance
HoldTime: Hold time
MeasurementTime: Actural measurement time for a pulse period
[Measurement Parameters]
Collector current Icollector
Gate current Igate
[User Function]
gfe: Forward transconductance gfe=diff(Icollector,Vgate)
Ta: Temperature Ta=Temp
[Analysis Function]
gfeMax=max(gfe)
Vth=@L1X (X intercept of Line1)
[Auto Analysis]
Line1: Tangent for Y2 data at the point of gfe=gfeMax
Agilent EasyEXPERT Application Library Reference, Edition 8
22-15