IRF840STR VISHAY [Vishay Siliconix], IRF840STR Datasheet - Page 7

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

Vishay Siliconix maintains worldwide manufacturing capability. Products may be manufactured at one of several qualified locations. Reliability data for Silicon
Technology and Package Reliability represent a composite of all qualified locations. For related documents such as package/tape drawings, part marking, and
reliability data, see http://www.vishay.com/ppg?91071.
Document Number: 91071
S-81432-Rev. A, 07-Jul-08
Re-applied
voltage
Reverse
recovery
current
+
-
R
G
D.U.T.
*
Driver gate drive
D.U.T. I
D.U.T. V
Inductor current
V
GS
= 5 V for logic level devices
P.W.
SD
DS
waveform
waveform
Peak Diode Recovery dV/dt Test Circuit
Ripple ≤ 5 %
Body diode forward drop
Period
Body diode forward
+
-
Fig. 14 - For N-Channel
• dV/dt controlled by R
• Driver same type as D.U.T.
• I
• D.U.T. - device under test
SD
Diode recovery
current
controlled by duty factor "D"
Circuit layout considerations
dV/dt
• Low stray inductance
• Ground plane
• Low leakage inductance
current transformer
dI/dt
D =
-
G
Period
P.W.
+
V
V
I
SD
GS
DD
= 10 V*
+
-
IRF840S, SiHF840S
V
DD
Vishay Siliconix
www.vishay.com
7