IRF7494 Datasheet, PDF (5/8 Pages) International Rectifier – HEXFET Power MOSFET

IRF7494
6
5
4
3
2
1
0
25
50 75 100 125 150 175
TA , Ambient Temperature (°C)
Fig 9. Maximum Drain Current vs.
Ambient Temperature
V_DS
V_GS
R_G
R_D
D.U.T.
10V
Pulse Width ≤ 1 µs
Duty Factor ≤ 0.1 %
+_-VDD
Fig 10a. Switching Time Test Circuit
V_DS
90%
10%
V_GS
t_d(on) t_r
t_d(off) t_f
Fig 10b. Switching Time Waveforms
100
D = 0.50
10
0.20
0.10
0.05
1
0.02
0.01
P_DM
0.1
SINGLE PULSE
( THERMAL RESPONSE )
0.01
1E-006
1E-005
0.0001
0.001
0.01
t₁
t₂
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-Case
www.irf.com
5