IRF7855TRPBF Datasheet, PDF (6/8 Pages) International Rectifier – Primary Side Switch in Bridge Topology in Isolated DC-DC Converters

IRF7855PbF
16
14
TJ = 125°C
12
10
TJ = 25°C
8
6
Vgs = 10V
4
10 20 30 40 50 60 70 80 90 100
ID, Drain Current (A)
Fig 12. On-Resistance vs. Drain Current
30
ID = 7.2A
25
20
15
TJ = 125°C
10
5
TJ = 25°C
0
4 5 6 7 8 9 10 11 12 13 14 15 16
VGS, Gate -to -Source Voltage (V)
Fig 13. On-Resistance vs. Gate Voltage
L
V_GS
Q_G
VCC
DUT
Q_GS
Q_GD
0
1K
V_G
Charge
Fig 14a&b. Basic Gate Charge Test Circuit
and Waveform
2400
2000
1600
1200
ID
TOP 0.41A
0.58A
BOTTOM 7.2A
V(BR)DSS
tp
I_AS
VDS
L
RG
20V
tp
D.U.T
I_AS
0.01Ω
15V
DRIVER
+
- ^VDD
A
Fig 15a&b. Unclamped Inductive Test circuit
and Waveforms
6
800
400
0
25
50
75
100 125 150
Starting TJ , Junction Temperature (°C)
Fig 15c. Maximum Avalanche Energy
vs. Drain Current
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