Bulletin PD-21084 08/05
MURB2020CTPbF
MURB2020CT-1PbF
Ultrafast Rectifier
Features
•
•
•
•
•
Ultrafast Recovery Time
Low Forward Voltage Drop
Low Leakage Current
175°C Operating Junction Temperature
Lead-Free ("PbF" suffix)
t
rr
= 25ns
I
F(AV)
= 20Amp
V
R
= 200V
Description/ Applications
International Rectifier's MUR.. series are the state of the art Ultra fast recovery rectifiers specifically designed with
optimized performance of forward voltage drop and ultra fast recovery time.
The planar structure and the platinum doped life time control, guarantee the best overall performance, ruggedness
and reliability characteristics.
These devices are intended for use in the output rectification stage of SMPS, UPS, DC-DC converters as well as
free-wheeling diode in low voltage inverters and chopper motor drives.
Their extremely optimized stored charge and low recovery current minimize the switching losses and reduce over
dissipation in the switching element and snubbers.
Absolute Maximum Ratings
Parameters
V
RRM
I
F(AV)
I
FSM
I
FM
T
J
, T
STG
Peak Repetitive Peak Reverse Voltage
Average Rectified Forward Current
Total Device, (Rated V
R
), T
C
= 145°C
Non Repetitive Peak Surge Current
Peak Repetitive Forward Current
(Rated V
R
, Square wave, 20 KHz), T
C
= 145°C
Operating Junction and Storage Temperatures
-65 to 175
°C
Per Leg
Total Device
Per Leg
Per Leg
Max
200
10
20
100
20
Units
V
A
Case Styles
MURB2020CTPbF
MURB2020CT-1PbF
BASE
COMMON
CATHODE
2
BASE
COMMON
CATHODE
2
1
2
3
1
2
3
ANODE COMMON ANODE
CATHODE
1
2
ANODE COMMON ANODE
CATHODE
1
2
D
2
PAK
www.irf.com
TO-262
1
MURB2020CTPbF, MURB2020CT-1PbF
Bulletin PD-21084 08/05
Electrical Characteristics @ T
J
= 25°C (unless otherwise specified)
Parameters
V
BR
, V
r
V
F
Breakdown Voltage,
Blocking Voltage
Forward Voltage
Min Typ Max Units Test Conditions
200
-
-
-
-
-
-
-
-
-
55
8.0
-
0.85
1.15
1.05
15
250
-
-
V
V
V
V
µA
µA
pF
nH
I
R
= 100µA
I
F
= 8A, T
J
= 125°C
I
F
= 16A, T
J
= 25°C
I
F
= 16A, T
J
= 125°C
V
R
= V
R
Rated
T
J
= 150°C, V
R
= V
R
Rated
V
R
= 200V
.
Measured lead to lead 5mm from package body
I
R
Reverse Leakage Current
-
-
C
T
L
S
Junction Capacitance
Series Inductance
-
-
Dynamic Recovery Characteristics @ T
J
= 25°C (unless otherwise specified)
Parameters
t
rr
Reverse Recovery Time
Min Typ Max Units Test Conditions
-
-
-
-
-
21
35
35
25
-
ns
I
F
= 1.0A, di
F
/dt = 50A/µs, V
R
= 30V
I
F
= 0.5A, I
R
= 1.0A, I
REC
= 0.25A
T
J
= 25°C
T
J
= 125°C
I
F
= 10A
V
R
= 160V
di
F
/dt = 200A/µs
I
RRM
Peak Recovery Current
-
-
1.9
4.8
25
78
-
-
-
-
A
T
J
= 25°C
T
J
= 125°C
Q
rr
Reverse Recovery Charge
-
-
nC
T
J
= 25°C
T
J
= 125°C
Thermal - Mechanical Characteristics
Parameters
T
J
T
Stg
R
thJC
R
thJA
R
thCS
Wt
Max. Junction Temperature Range
Max. Storage Temperature Range
Thermal Resistance, Junction to Case
Thermal Resistance, Junction to Ambient
Thermal Resistance, Case to Heatsink
Weight
Per Leg
Per Leg
Min
- 65
- 65
-
-
-
-
-
Typ
-
-
-
-
0.5
2.0
0.07
-
-
Max
175
175
2.5
50
-
-
-
12
10
Units
°C
°C/W
g
(oz)
Kg-cm
lbf.in
2
Mounting Torque
6.0
5.0
Marking Device
MURB2020CT
MURB2020CT-1
Case style D Pak
Case style TO-262
Mounting Surface, Flat, Smooth and Greased
2
www.irf.com
MURB2020CTPbF, MURB2020CT-1PbF
Bulletin PD-21084 08/05
100
Reverse Current - I
R
(µA)
100
T J = 175˚C
150˚C
10
1
125˚C
100˚C
0.1
25˚C
Instantaneous Forward Current - I
F
(A)
10
TJ = 175˚C
T = 125˚C
J
T = 25˚C
J
0.01
0.001
50
100
150
200
250
Reverse Voltage - V
R
(V)
Fig. 2 - Typical Values Of Reverse Current
Vs. Reverse Voltage
1000
Junction Capacitance - C
T
(pF)
0
1
T = 25˚C
J
100
0.1
0
0.4
0.8
1.2
1.6
Forward Voltage Drop - V
FM
(V)
2
10
1
10
100
1000
Reverse Voltage - V
R
(V)
Fig. 3 - Typical Junction Capacitance
Vs. Reverse Voltage
Fig. 1 - Typical Forward Voltage Drop Characteristics
10
(°C/W)
thJC
Thermal Impedance Z
1
D = 0.50
D = 0.20
D = 0.10
D = 0.05
D = 0.02
D = 0.01
Notes:
P
DM
t1
t2
0.1
Single Pulse
(Thermal Resistance)
1. Duty factor D = t1/ t2
2. Peak Tj = Pdm x ZthJC + Tc
0.01
0.00001
0.0001
0.001
0.01
0.1
1
t
1
, Rectangular Pulse Duration (Seconds)
Fig. 4 - Max. Thermal Impedance Z
thJC
Characteristics
www.irf.com
3
MURB2020CTPbF, MURB2020CT-1PbF
Bulletin PD-21084 08/05
180
Allowable Case Temperature (°C)
Average Power Loss ( Watts )
15
RMS Limit
170
DC
12
160
9
D = 0.01
D = 0.02
D = 0.05
D = 0.1
D = 0.2
D = 0.5
DC
150
Square wave (D = 0.50)
Rated Vr applied
6
140
3
see note (2)
130
0
3
6
9
12
15
Average Forward Current - I
F
(AV)
(A)
Fig. 5 - Max. Allowable Case Temperature
Vs. Average Forward Current
0
0
3
6
9
12
15
Average Forward Current - I
F
(AV)
(A)
Fig. 6 - Forward Power Loss Characteristics
50
IF = 20 A
IF = 10 A
IF = 5 A
250
V
R
= 160V
T
J
= 125˚C
T
J
= 25˚C
40
200
I
F
= 20 A
I
F
= 10 A
I
F
= 5 A
Qrr ( nC )
V
R
= 160V
T
J
= 125˚C
T
J
= 25˚C
trr ( ns )
30
150
20
100
10
50
0
100
di
F
/dt (A/µs )
1000
0
100
di
F
/dt (A/µs )
1000
Fig. 7 - Typical Reverse Recovery vs. di
F
/dt
Fig. 8 - Typical Stored Charge vs. di
F
/dt
(2)
Formula used: T
C
= T
J
- (Pd + Pd
REV
) x R
thJC
;
Pd = Forward Power Loss = I
F(AV)
x V
FM
@ (I
F(AV)
/
D) (see Fig. 6);
Pd
REV
= Inverse Power Loss = V
R1
x I
R
(1 - D); I
R
@ V
R1
= rated V
R
4
www.irf.com
MURB2020CTPbF, MURB2020CT-1PbF
Bulletin PD-21084 08/05
Reverse Recovery Circuit
V
R
= 200V
0.01
Ω
L = 70µH
D.U.T.
di
F
/dt
dif/dt
ADJUST
D
G
IRFP250
S
Fig. 9- Reverse Recovery Parameter Test Circuit
3
I
F
0
t
rr
t
a
t
b
4
2
Q
rr
I
RRM
0.5 I
RRM
di(rec)M/dt
0.75 I
RRM
5
1
/dt
di
f
F
/dt
4. Q
rr
- Area under curve defined by t
rr
and I
RRM
t
rr
x I
RRM
Q
rr
=
2
5. di
(rec) M
/ dt - Peak rate of change of
current during t
b
portion of t
rr
1. di
F
/dt - Rate of change of current through zero
crossing
2. I
RRM
- Peak reverse recovery current
3. t
rr
- Reverse recovery time measured from zero
crossing point of negative going I
F
to point where
a line passing through 0.75 I
RRM
and 0.50 I
RRM
extrapolated to zero current
Fig. 10 - Reverse Recovery Waveform and Definitions
www.irf.com
5
京公网安备 11010802033920号
EEWORLD
