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| IRFRU120A Datasheet, PDF (5/7 Pages) Fairchild Semiconductor – Advanced Power MOSFET | |||
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N-CHANNEL
POWER MOSFET
IRFR/U120A
Fig 12. Gate Charge Test Circuit & Waveform
â Current Regulator â
50Kâ¦
12V
200nF
300nF
VGS
Same Type
as DUT
VGS
10V
VDS
Qgs
DUT
3mA
R1
R2
Current Sampling (I G) Current Sampling (I D)
Resistor
Resistor
Qg
Qgd
Charge
10V
Vout
Vin
RG
Fig 13. Resistive Switching Test Circuit & Waveforms
RL
VDD
( 0.5 rated VDS )
Vout
90%
DUT
10%
Vin
td(on)
tr
t on
td(off)
tf
t off
Fig 14. Unclamped Inductive Switching Test Circuit & Waveforms
LL
VDS
Vary tp to obtain
ID
required peak ID
EAS =
--1--
2
LL IAS2
BVDSS
--------------------
BVDSS -- VDD
BVDSS
IAS
10V
RG
tp
C
VDD
DUT
VDD
ID (t)
tp
VDS (t)
Time
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