IRLB8743PBF

IRLB8743PbF
www.irf.com 7
D.U.T.
V
DS
I
D
I
G
3mA
V
GS
.3µF
50K
.2µF
12V
Current Regulator
Same Type as D.U.T.
Current Sampling Resistors
+
-
Fig 16. Gate Charge Test Circuit
Fig 15. Peak Diode Recovery dv/dt Test Circuit for N-Channel
HEXFET
®
Power MOSFETs
Circuit Layout Considerations
Low Stray Inductance
Ground Plane
Low Leakage Inductance
Current Transformer
P.W.
Period
di/dt
Diode Recovery
dv/dt
Ripple 5%
Body Diode Forward Drop
Re-Applied
Voltage
Reverse
Recovery
Current
Body Diode Forward
Current
V
GS
=10V
V
DD
I
SD
Driver Gate Drive
D.U.T. I
SD
Waveform
D.U.T. V
DS
Waveform
Inductor Curent
D =
P. W .
Period
* V
GS
= 5V for Logic Level Devices
*
+
-
+
+
+
-
-
-
R
G
V
DD
dv/dt controlled by R
G
Driver same type as D.U.T.
I
SD
controlled by Duty Factor "D"
D.U.T. - Device Under Test
D.U.T
Fig 17. Gate Charge Waveform
Vds
Vgs
Id
Vgs(th)
Qgs1
Qgs2QgdQgodr
IRLB8743PbF
8 www.irf.com
TO-220AB Package Outline (Dimensions are shown in millimeters (inches))
TO-220AB packages are not recommended for Surface Mount Application.
Note: For the most current drawing please refer to IR website at:
http://www.irf.com/package/
IRLB8743PbF
www.irf.com 9
Repetitive rating; pulse width limited by
max. junction temperature.
Starting T
J
= 25°C, L = 0.61mH, R
G
= 25,
I
AS
= 32A.
Pulse width 400µs; duty cycle 2%.
Calculated continuous current based on
maximum allowable junction temperature.
Package limitation current is 78A.
Notes:
When mounted on 1" square PCB (FR-4 or G-10 Material).
For recommended footprint and soldering techniques refer to
application note #AN-994.
R
θ
is measured at T
J
approximately 90°C.
This is only applied to TO-220AB pakcage.
Data and specifications subject to change without notice.
This product has been designed and qualified for the Industrial market.
Qualification Standards can be found on IR’s Web site.
IR WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, USA Tel: (310) 252-7105
TAC Fax: (310) 252-7903
Visit us at www.irf.com for sales contact information.04/2009
TO-220AB Part Marking Information
Note: For the most current drawing please refer to IR website at: http://www.irf.com/package/

IRLB8743PBF

Mfr. #:
Manufacturer:
Infineon / IR
Description:
MOSFET MOSFT 30V 78A 3.2mOhm 36nC Qg
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

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