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| UF840 Datasheet, PDF (5/8 Pages) Unisonic Technologies – 8A, 500V, 0.85ohm, N-CHANNEL POWER MOSFET | |||
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UF840
TEST CIRCUITS AND WAVEFORMS (Cont.)
MOSFET
VDS
tON
tDLY(ON)
tR
90%
tOFF
t DLY(OFF)
tF
90%
0
VGS
10%
0
10%
10%
50%
PULSE WIDTH
90%
50%
FIGURE 4. RESISTIVE SWITCHING WAVEFORMS
CURRENT
REGULATOR
VDS (ISOLATED
SUPPLY)
12V
BATTERY
0.2ÇF 50KƸ
0.3ÇF
SAME TYPE
AS DUT
D
G
DUT
0
VDD
IG (REF)
S
IG CURRENT
SAMPLING
RESISTOR
VDS
ID CURRENT
SAMPLING
RESISTOR
FIGURE 5. GATE CHARGE TEST CIRCUIT
QGS
QG(TOT)
QGD
VGS
0
IG(REF)
VDS
0
FIGURE 6. GATE CHARGE WAVEFORMS
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
5 of 8
QW-R502-047,C
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