auirls4030-7p International Rectifier Corp., auirls4030-7p Datasheet - Page 5

• Manufacturer Part Number: auirls4030-7p
• Description: Hexfetpower Mosfet
• Manufacturer: International Rectifier Corp.

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Fig 15. Maximum Avalanche Energy vs. Temperature
400
300
200
100
0
25
0.0001
1000
0.001
100
0.01
0.1
Starting T J , Junction Temperature (°C)
10
0.1
1.0E-06
1
1E-006
1
50
Allowed avalanche Current vs avalanche
pulsewidth, tav, assuming ΔΤ j = 25°C and
Tstart = 150°C.
0.05
0.10
Fig 13. Maximum Effective Transient Thermal Impedance, Junction-to-Case
0.01
D = 0.50
TOP
BOTTOM 1.0% Duty Cycle
I D = 110A
75
0.01
0.02
0.20
0.10
0.05
Duty Cycle = Single Pulse
SINGLE PULSE
( THERMAL RESPONSE )
100
Single Pulse
1.0E-05
1E-005
125
Fig 14. Typical Avalanche Current vs.Pulsewidth
150
175
t 1 , Rectangular Pulse Duration (sec)
1.0E-04
0.0001
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 22a, 22b.
4. P
5. BV = Rated breakdown voltage (1.3 factor accounts for voltage increase
6. I
7. ΔT
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
av
av =
thJC
D (ave)
= Allowable avalanche current.
=
Average time in avalanche.
(D, t
Allowable rise in junction temperature, not to exceed T
Allowed avalanche Current vs avalanche
pulsewidth, tav, assuming ΔTj = 150°C and
Tstart =25°C (Single Pulse)
= Average power dissipation per single avalanche pulse.
av
τ
J
τ
) = Transient thermal resistance, see Figures 13)
1.0E-03
J
τ
jmax
1
C i= τi/R i
τ
0.001
1
Ci= τi/Ri
. This is validated for every part type.
R
1
R
P
1
D (ave)
τ
2
τ
R
2
2
R
= 1/2 ( 1.3·BV·I
I
2
E
Notes:
1. Duty Factor D = t1/t2
2. Peak Tj = P dm x Zthjc + Tc
av
AS (AR)
τ
= 2DT/ [1.3·BV·Z
C
τ
C
av
1.0E-02
Ri (°C/W) τi (sec)
·f
0.176
0.227
0.01
= P
D (ave)
av
) = DT/ Z
·t
th
0.000343
0.006073
av
]
jmax
thJC
jmax
1.0E-01
is not exceeded.
0.1
(assumed as
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