IRFR4615TRPBF IRF [International Rectifier], IRFR4615TRPBF Datasheet - Page 5

• Manufacturer Part Number: IRFR4615TRPBF
• Description: HEXFET Power MOSFET
• Manufacturer: IRF [International Rectifier]

www.irf.com
Fig 15. Maximum Avalanche Energy vs. Temperature
120
100
80
60
40
20
0
25
0.001
100
0.01
0.1
10
0.1
1.0E-06
10
1
1E-006
Starting T J , Junction Temperature (°C)
1
50
Allowed avalanche Current vs avalanche
pulsewidth, tav, assuming ∆Τ j = 25°C and
Tstart = 150°C.
Fig 13. Maximum Effective Transient Thermal Impedance, Junction-to-Case
TOP
BOTTOM 1.0% Duty Cycle
I D = 21A
75
D = 0.50
Duty Cycle = Single Pulse
0.02
0.01
0.05
0.10
0.10
0.05
0.20
0.01
100
1.0E-05
Single Pulse
SINGLE PULSE
( THERMAL RESPONSE )
1E-005
Fig 14. Typical Avalanche Current vs.Pulsewidth
125
150
t 1 , Rectangular Pulse Duration (sec)
175
1.0E-04
0.0001
τ
Notes on Repetitive Avalanche Curves , Figures 14, 15:
(For further info, see AN-1005 at www.irf.com)
1. Avalanche failures assumption:
2. Safe operation in Avalanche is allowed as long asT
3. Equation below based on circuit and waveforms shown in Figures 16a, 16b.
4. P
5. BV = Rated breakdown voltage (1.3 factor accounts for voltage increase
6. I
7. ∆T
J
τ
J
τ
tav (sec)
Purely a thermal phenomenon and failure occurs at a temperature far in
excess of T
during avalanche).
25°C in Figure 14, 15).
t
D = Duty cycle in avalanche = t
Z
1
Ci= τi/Ri
av
av =
τ
thJC
D (ave)
1
Ci
= Allowable avalanche current.
=
Average time in avalanche.
(D, t
Allowable rise in junction temperature, not to exceed T
i/Ri
R
1
= Average power dissipation per single avalanche pulse.
R
av
1
) = Transient thermal resistance, see Figures 13)
Allowed avalanche Current vs avalanche
pulsewidth, tav, assuming ∆Tj = 150°C and
Tstart =25°C (Single Pulse)
1.0E-03
jmax
τ
2
0.001
τ
R
2
. This is validated for every part type.
2
R
2
P
D (ave)
R
τ
3
3
R
τ
3
3
= 1/2 ( 1.3·BV·I
I
E
av
Notes:
1. Duty Factor D = t1/t2
2. Peak Tj = P dm x Zthjc + Tc
AS (AR)
τ
R
4
= 2DT/ [1.3·BV·Z
τ
4
R
4
av
4
1.0E-02
τ
·f
C
τ
= P
Ri (°C/W)
0.01
0.02324
0.26212
0.50102
0.25880
D (ave)
av
) = DT/ Z
·t
th
av
]
0.000008
0.000106
0.001115
0.005407
τi (sec)
jmax
thJC
jmax
is not exceeded.
1.0E-01
(assumed as
0.1
5