UF840
TEST CIRCUITS AND WAVEFORMS
VARY tp TO OBTAIN
REQUIRED PEAK IAS
RG
VGS
0V
tp
MOSFET
VDS
L
DUT
+
VDD
-
IAS
0.01Ω
FIGURE 1. UNCLAMPED ENERGY TEST CIRCUIT
tp
IAS
BVDSS
VDS
VDD
0
tAV
FIGURE 2. UNCLAMPED ENERGY WAVEFORMS
RL
+
RG
VDD
-
DUT
VGS
FIGURE 3. SWITCHING TIME TEST CIRCUIT
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
4 of 8
QW-R502-047,C