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| IRF7601 Datasheet, PDF (5/8 Pages) International Rectifier – Power MOSFET(Vdss=20V, Rds(on)=0.035ohm) | |||
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4.5V
QGS
VG
QG
QGD
Charge
Fig 9a. Basic Gate Charge Waveform
Current Regulator
Same Type as D.U.T.
50Kâ¦
12V
.2µF
.3µF
D.U.T.
+
-VDS
VGS
3mA
IG
ID
Current Sampling Resistors
Fig 9b. Gate Charge Test Circuit
IRF7601
VDS
VGS
RG
RD
D.U.T.
4.5V
Pulse Width ⤠1 µs
Duty Factor ⤠0.1 %
+
-
VDD
Fig 10a. Switching Time Test Circuit
VDS
90%
10%
VGS
td(on) tr
td(off) tf
Fig 10b. Switching Time Waveforms
100
D = 0.50
0.20
10
0.10
0.05
0.02
1
0.01
PDM
t1
t2
SINGLE PULSE
(THERMAL RESPONSE)
0.1
0.00001
0.0001
0.001
0.01
Notes:
1. Duty factor D = t1 / t 2
2. Peak T J= P DM x Z thJA + TA
0.1
1
10
100
t1, Rectangular Pulse Duration (sec)
Fig 11. Maximum Effective Transient Thermal Impedance, Junction-to-Ambient
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