SGS Thomson Microelectronics BUF420M, BUF420 Datasheet
HIGH VOLTAGE FAST-SWITCHING
■ SGS-THOMSONPREFERRED SALESTYPES
■ NPNTRANSISTOR
■ HIGH VOLTAGECAPABILITY
■ VERYHIGH SWITCHINGSPEED
■ MINIMUMLOT-TO-LOT SPREADFOR
RELIABLEOPERATION
■ LOW BASE-DRIVEREQUIREMENTS
BUF420
BUF420M
NPN POWER TRANSISTOR
APPLICATIONS:
■ SWITCHMODE POWER SUPPLIES
■ MOTORCONTROL
DESCRIPTION
The BUF420 and BUF420M are manufactured
3
2
1
TO-218 TO-3
1
2
(version”R”)
using High Voltage Multi Epitaxial Planar
technology for high switching speeds and high
voltage capacity. They use a Cellular Emitter
structurewith planar edge terminationto enhance
switching speeds while maintaining a wide
INTERNAL SCHEMATIC DIAGRAM
RBSOA.
The BUF series is designed for use in
high-frequency power supplies and motor control
applications.
For TO-3 :
C = Tab
E = Pin2.
ABSOLUTE MAXIMUM RATINGS
Symb o l Parameter Value Uni t
V
V
V
I
I
P
T
Collector-Emitte r Voltage ( VBE= -1. 5 V) 850 V
CEV
Collector-Emitte r Voltage ( IB= 0) 450 V
CEO
Emit t er-Base Voltage ( IC=0) 7 V
EBO
Collector Current 30 A
I
C
Collector P e ak Current (tp<5ms) 60 A
CM
Base Current 6 A
I
B
Base Pe ak Curr ent ( tp<5ms) 9 A
BM
TO - 218 TO - 3
Total Dissipation at Tc=25oC 200 200 W
tot
St orage T emperature -65 to 15 0
stg
Max O per ation Junct ion T emperature 150
T
j
o
C
o
C
July 1997
1/7
BUF420/ BUF420M
THERMAL DATA
R
thj-case
Ther mal Resistance Junct ion- Case M ax 0.63 0.63
TO - 218 TO-3
o
C/W
ELECTRICAL CHARACTERISTICS (T
=25oC unless otherwise specified)
case
Symbol Parameter Test Cond ition s Min. Typ. Max. Unit
I
CER
I
CEV
I
EBO
V
CEO(sus )
Collector C ut -off
Current (R
BE
=5Ω)
Collector C ut -off
Current (I
B
=0)
Emit ter Cut - o f f C urr ent
=0)
(I
C
∗ Co llec tor-Emit t er
V
CE=VCEV
VCE=V
V
V
V
CEVTc
CE=VCEVVBE
CE=VCEVVBE
=5V 1 mA
BE
=100oC
=-1.5V
= -1.5 V Tc=100oC
0.2
1
0.2
1
IC= 200 mA L = 25 mH 450 V
Sust aining V olt ag e
V
V
CE(sat)
EBO
Emit ter B ase V o lt age
=0)
(I
C
∗ Co llector-Em itt er
Saturation Voltage
V
∗ Base-Emitt er
BE(sat)
Saturation Voltage
di
/dt Rate of rise on-state
c
Collector C ur rent
V
(3µs) Collector-Emit t er
CE
Dynamic Volt age
V
(5µs) Collector-Emit t er
CE
Dynamic Volt age
t
t
St orage Time
s
t
Fall T ime
f
Cross Over Time
c
I
=50mA 7 V
E
IC=10A IB=1A
=10A IB=1A Tc=100oC
I
C
=20A IB=2A
I
C
=20A IB=2A Tc=100oC
I
C
IC=10A IB=1A
=10A IB=1A Tc=100oC
I
C
I
=20A IB=2A
C
=20A IB=2A Tc=100oC
I
C
0.8
2.8
0.5
2
0.9
1.5
1.1
1.5
VCC=300V RC=0 tp=3µs
=1.5A Tj=25oC
I
B1
=1.5A Tj=100oC
I
B1
=6A Tj=100oC
I
B1
70
150
100 A/µs
VCC=300V RC=60Ω
=1.5A Tj=25oC
I
B1
=1.5A Tj=100oC
I
B1
2.1
8
VCC=300V RC=60Ω
I
=1.5A Tj=25oC
B1
=1.5A Tj=100oC
I
B1
IC=10A VCC=50V
=-5V RBB=0.6 Ω
V
BB
= 400 V IB1=0.5A
V
clamp
1.1
4
1
0.05
0.08
L = 0. 25 mH
2
0.1
0.18
V
t
s
t
f
t
c
CEW
t
s
t
f
t
c
St orage Time
Fall T ime
Cross Over Time
Maximum Collector
Emit ter V oltage
without Snubber
St orage Time
Fall T ime
Cross Over Time
IC=10A VCC=50V
=-5V RBB=0.6Ω
V
BB
= 400 V IB1=1A
V
clamp
L = 0. 25 mH T
=100oC
j
IC=10A VCC=50V
=-5V RBB=0.6Ω
V
BB
V
= 400 V IB1=1A
clamp
L = 0. 25 mH T
=125oC
j
IC=10A VCC=50V
=0 RBB=0.15Ω
V
BB
= 400 V IB1=1A
V
clamp
500 V
1.5
0.04
0.07
L = 0. 25 mH
mA
mA
mA
mA
V
V
V
V
V
V
V
V
A/µs
A/µs
V
V
V
V
µs
µs
µs
µs
µs
µs
µs
µs
µs
2/7
BUF420/ BUF420M
ELECTRICAL CHARACTERISTICS (continued)
Symbol Parameter Test Cond ition s Min. Typ. Max. Unit
V
V
t
s
t
f
t
c
CEW
t
s
t
f
t
c
t
s
t
f
t
c
CEW
St orage Time
Fall T ime
Cross Over Time
Maximum Collector
Emit ter V oltage
without Snubber
St orage Time
Fall T ime
Cross Over Time
St orage Time
Fall T ime
Cross Over Time
Maximum Collector
Emit ter V oltage
without Snubber
IC=10A VCC=50V
=0 RBB=0.15Ω
V
BB
= 400 V IB1=1A
V
clamp
L = 0. 25 mH T
=100oC
j
IC=10A VCC=50V
=0 RBB=0.15Ω
V
BB
= 400 V IB1=1A
V
clamp
L = 0. 25 mH T
=125oC
j
IC=20A VCC=50V
=-5V RBB=0.6 Ω
V
BB
= 400 V IB1=4A
V
clamp
L = 0. 12 mH
IC=20A VCC=50V
=-5V RBB=0.6Ω
V
BB
= 400 V IB1=4A
V
clamp
L = 0. 12 mH T
I
=30A VCC=50V
CWo f f
=-5V RBB=0.6Ω
V
BB
L = 0. 08 mH I
=125oC
T
j
=125oC
j
=6A
B1
500 V
2.2
0.06
0.12
400 V
3
0.15
0.25
3.5
0.12
0.3
µs
µs
µs
µs
µs
µs
µs
µs
µs
Figure1: Turn-onSwitchingTest Circuit
1) Fast electronic switch 2) Non inductive Resistor
Figure2: Turn-offSwitchingTest Circuit
1) Fast electronic switch 2) Non inductive Resistor 3) Fast recovery rectifier
3/7
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