UF740 Datasheet, PDF (4/6 Pages) Unisonic Technologies – 10A, 400V, 0.55 OHM, N-CHANNEL POWER MOSFET

UF740
TEST CIRCUITS AND WAVEFORMS

VDS
L
R_G
VDD
D.U.T.
MOSFET
BVDSS
VDS
IAS
VDD
0.01Ȥ
IAS
Figure 1A. Unclamped Energy Test Circuit
0
t_p
tAV
Figure 1B. Unclamped Energy Waveforms






R_G
VGS
RL
V_DD
D.U.T.
V_DS
90%
10%
0
V_GS
010%
50%
PULSE WIDTH
t_D(ON) tR
tON
90%
50%
t_D(OFF) t_F
t _OFF
Figure 2A. Switching Time Test Circuit
Figure 2B. Resistive Switching Waveforms






12V
BATTERY
CURRENT
REGULATOR
50kȤ
0.2µF
0.3µF
V_DS
(ISOLATED
SUPPLY)
SAME TYPE
AS DUT
VDD
Q_GS
Q _G(TOT)
Q_GD
V_GS
D
VDS
G
DUT
0
I_G(REF)
0
S
I_G(REF)
IG CURRENT
ID CURRENT
SAMPLING
SAMPLING
0
RESISTOR
RESISTOR
Figure 3A. Gate Charge Test Circuit
Figure 3B. Gate Charge Waveforms
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
4 of 6
QW-R502-078,A