IRL3705Z International Rectifier, IRL3705Z Datasheet - Page 7

• Manufacturer Part Number: IRL3705Z
• Description: MOSFET N-CH 55V 75A TO-220AB
• Manufacturer: International Rectifier
• Series: HEXFET®r

Specifications of IRL3705Z

• Fet Type: MOSFET N-Channel, Metal Oxide
• Fet Feature: Logic Level Gate
• Rds On (max) @ Id, Vgs: 8 mOhm @ 52A, 10V
• Drain To Source Voltage (vdss): 55V
• Current - Continuous Drain (id) @ 25° C: 75A
• Vgs(th) (max) @ Id: 3V @ 250µA
• Gate Charge (qg) @ Vgs: 60nC @ 5V
• Input Capacitance (ciss) @ Vds: 2880pF @ 25V
• Power - Max: 130W
• Mounting Type: Through Hole
• Package / Case: TO-220-3 (Straight Leads)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: *IRL3705Z

www.irf.com
100
150
125
100
0.1
10
75
50
25
1.0E-05
1
0
Fig 16. Maximum Avalanche Energy
25
0.10
0.05
0.01
Starting T J , Junction Temperature (°C)
50
Duty Cycle = Single Pulse
vs. Temperature
TOP
BOTTOM 1% Duty Cycle
I D = 52A
75
100
Fig 15. Typical Avalanche Current vs.Pulsewidth
1.0E-04
Single Pulse
125
150
175
tav (sec)
Notes on Repetitive Avalanche Curves , Figures 15, 16:
(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
4. P
5. BV = Rated breakdown voltage (1.3 factor accounts for
6. I
7. ∆T
1.0E-03
t
Purely a thermal phenomenon and failure occurs at a
temperature far in excess of T
every part type.
not exceeded.
Figures 12a, 12b.
avalanche pulse.
voltage increase during avalanche).
T
D = Duty cycle in avalanche = t
Z
av =
av
thJC
jmax
D (ave)
= Allowable avalanche current.
=
Average time in avalanche.
(D, t
Allowable rise in junction temperature, not to exceed
(assumed as 25°C in Figure 15, 16).
= Average power dissipation per single
av
P
) = Transient thermal resistance, see figure 11)
D (ave)
= 1/2 ( 1.3·BV·I
I
E
Allowed avalanche Current vs
avalanche
assuming ∆ Tj = 25°C due to
avalanche losses
av
AS (AR)
= 2DT/ [1.3·BV·Z
1.0E-02
= P
D (ave)
jmax
pulsewidth,
av
av
. This is validated for
·f
) = DT/ Z
·t
th
av
]
thJC
tav
jmax
1.0E-01
7
is