IRF840STR VISHAY [Vishay Siliconix], IRF840STR Datasheet - Page 6

• Manufacturer Part Number: IRF840STR
• Description: Power MOSFET
• Manufacturer: VISHAY [Vishay Siliconix]

IRF840S, SiHF840S
Vishay Siliconix
www.vishay.com
6
Vary t
required I
p
Fig. 12a - Unclamped Inductive Test Circuit
to obtain
10 V
Fig. 13a - Basic Gate Charge Waveform
AS
V
G
R
10 V
G
Q
GS
V
DS
t
p
Charge
Q
Q
GD
G
I
AS
D.U.T.
0.01 Ω
L
Fig. 12c - Maximum Avalanche Energy vs. Drain Current
+
-
V
DD
Fig. 12b - Unclamped Inductive Waveforms
V
I
AS
12 V
DS
V
Fig. 13b - Gate Charge Test Circuit
GS
Same type as D.U.T.
Current regulator
0.2 µF
Current sampling resistors
3 mA
50 kΩ
0.3 µF
t
p
I
G
Document Number: 91071
S-81432-Rev. A, 07-Jul-08
D.U.T.
V
I
D
DS
+
-
V
V
DD
DS