C&H Technology UFB200FA60P - Manual (Page 5)

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4 Revision: 05-May-08
UFB200FA60P
Vishay High Power Products Insulated Ultrafast
Rectifier Module, 200 A
Fig. 5 - Maximum Allowable Case Temperature vs.
Average Forward Current (Per Leg)
Fig. 6 - Forward Power Loss Characteristics (Per Leg)
Fig. 7 - Typical Reverse Recovery Time vs. dI
F
/dt
Fig. 8 - Typical Stored Charge vs. dI
F
/dt
Note
(1) Formula used: T
C
= T
J
- (Pd + Pd
REV
) x R
thJC
;
Pd = Forward power loss = I
F(AV)
x V
FM
at (I
F(AV)
/D) (see fig. 6);
Pd
REV
= Inverse power loss = V
R1
x I
R
(1 - D); I
R
at V
R1
= 80 % rated V
R
Average Forward Current - I
F(AV)
(A)
Allowable Case Temperature (°C)
0 50 100 150 200
0
50
100
150
200
DC
see note 1
Square wave (D=0.50)
80% rated Vr applied
Average Power Loss ( W )
Average Forward Current - I
F(AV)
(A)
0 25 50 75 100 125 150
0
50
100
150
200
250
RMS Limit
DC
D = 0.2
D = 0.25
D = 0.33
D = 0.5
D = 0.75
t rr
(ns)
dI
F
/dt (A/μs )
0 0 0 1 0 0 1
50
100
150
200
250
If = 50A, 125°C
If = 50A, 25°C
Vr = 200V
Q
rr
(nC)
dI
F
/dt (A/μs )
0 0 0 1 0 0 1
0
500
1000
1500
2000
2500
3000
3500
If = 50A, 125°C
If = 50A, 25°C
Vr = 200V