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91034 Datasheet, PDF (7/9 Pages) Vishay Siliconix – Third generation Power MOSFETs from Vishay provide the designer with the best combination of fast switching, ruggedlzed device design, low on-resistance and cost-effectiveness
IRF634, SiHF634
Vishay Siliconix
D.U.T.
+
-
Peak Diode Recovery dV/dt Test Circuit
+
Circuit layout considerations
• Low stray inductance
• Ground plane
• Low leakage inductance
current transformer
-
-
+
Rg
• dV/dt controlled by Rg
+
• Driver same type as D.U.T.
• ISD controlled by duty factor “D”
- VDD
• D.U.T. - device under test
Driver gate drive
P.W.
Period
D=
P.W.
Period
VGS = 10 Va
D.U.T. lSD waveform
Reverse
recovery
current
Body diode forward
current
dI/dt
D.U.T. VDS waveform
Diode recovery
dV/dt
VDD
Re-applied
voltage
Body diode forward drop
Inductor current
Ripple ≤ 5 %
ISD
Note
a. VGS = 5 V for logic level devices
Fig. 14 - For N-Channel
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 www.vishay.com/ppg?91034.
Document Number: 91034
S11-0509-B, 21-Mar-11
www.vishay.com
7
This datasheet is subject to change without notice.
THE PRODUCT DESCRIBED HEREIN AND THIS DATASHEET ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000