IRF7821 International Rectifier, IRF7821 Datasheet - Page 7

• Manufacturer Part Number: IRF7821
• Description: MOSFET N-CH 30V 13.6A 8-SOIC
• Manufacturer: International Rectifier
• Series: HEXFET®r

Specifications of IRF7821

• Fet Type: MOSFET N-Channel, Metal Oxide
• Fet Feature: Logic Level Gate
• Rds On (max) @ Id, Vgs: 9.1 mOhm @ 13A, 10V
• Drain To Source Voltage (vdss): 30V
• Current - Continuous Drain (id) @ 25° C: 13.6A
• Vgs(th) (max) @ Id: 1V @ 250µA
• Gate Charge (qg) @ Vgs: 14nC @ 4.5V
• Input Capacitance (ciss) @ Vds: 1010pF @ 15V
• Power - Max: 2.5W
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: *IRF7821

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Fig 16. Gate Charge Test Circuit
‚
+
-
12V
V
GS
Same Type as D.U.T.
D.U.T
Current Regulator
.2µF
ƒ
Fig 15.
50KΩ
3mA
+
-
•
•
•
•
Current Sampling Resistors
SD
.3µF
I
•
•
•
G
-
D.U.T.
„
G
HEXFET
I
D
+
+
-
V
DS
®
+
-
Power MOSFETs
Re-Applied
Voltage
Reverse
Recovery
Current
Vgs(th)
Qgs1 Qgs2
Vds
Driver Gate Drive
D.U.T. I
D.U.T. V
Inductor Curent
Fig 17. Gate Charge Waveform
P.W.
SD
DS
Waveform
Waveform
Ripple ≤ 5%
for N-Channel
Body Diode
Qgd
Period
Body Diode Forward
Diode Recovery
Current
dv/dt
Forward Drop
di/dt
Qgodr
D =
Period
P.W.
Vgs
V
V
I
SD
GS
DD
=10V
7
Id