BU931P
Automotive-grade high voltage ignition coil driver
NPN power Darlington transistor
Datasheet - production data
Features
AEC-Q101 qualified
Very rugged Bipolar technology
High operating junction temperature
Applications
3
2
1
High ruggedness electronic ignitions
Description
This is a high voltage power Darlington transistor
developed using multi-epitaxial planar
technology. It has been properly designed for
automotive environment as electronic ignition
power actuators.
TO-247
Figure 1: Internal schematic diagram
Table 1: Device summary
Order code
BU931P
Marking
BU931P
Package
TO-247
Packing
Tube
October 2017
DocID031166 Rev 1
1/11
www.st.com
This is information on a product in full production.
Contents
BU931P
Contents
1
2
3
4
5
Electrical ratings ............................................................................. 3
Electrical characteristics ................................................................ 4
2.1
Electrical characteristics (curves) ...................................................... 5
Test circuits ..................................................................................... 7
Package information ....................................................................... 8
4.1
TO-247 package information ............................................................. 8
Revision history ............................................................................ 10
2/11
DocID031166 Rev 1
BU931P
Electrical ratings
1
Electrical ratings
Table 2: Absolute maximum ratings
Symbol
V
CES
V
CEO
V
EBO
I
C
I
CM
I
B
I
BM
P
TOT
T
stg
T
j
Parameter
Collector-emitter voltage (V
BE
= 0)
Collector-emitter voltage (I
B
= 0)
Emitter-base voltage (I
C
= 0)
Collector current
Collector peak current
Base current
Base peak current
Total dissipation at Tc = 25 °C
Storage temperature range
Operating junction temperature range
Table 3: Thermal data
Symbol
R
thJC
R
thJA
Parameter
Thermal resistance junction-case
Thermal resistance junction-ambient
Value
1.1
50
Unit
°C/W
°C/W
Value
500
400
5
15
30
1
5
135
-65 to 175
Unit
V
V
V
A
A
A
A
W
°C
°C
DocID031166 Rev 1
3/11
Electrical characteristics
BU931P
2
Electrical characteristics
(T
C
= 25 °C unless otherwise specified)
Table 4: Electrical characteristics
Symbol
I
CES
Parameter
Collector cut-off current
Test conditions
V
BE
= 0 V, V
CE
= 500 V
V
BE
= 0 V, V
CE
= 500 V,
T
C
= 125 °C
(1)
I
B
= 0 A, V
CE
= 450 V
I
CEO
I
EBO
V
CEO(sus)
(2)
Collector cut-off current
Emitter cut-off current
Collector-emitter
sustaining voltage
Collector-emitter
saturation voltage
I
B
= 0 A, V
CE
= 450 V,
T
C
= 125 °C
(1)
I
C
= 0 A, V
EB
= 5 V
I
B
= 0 A, I
C
= 100 mA
I
C
= 7 A, I
B
= 70 mA
V
CE(sat)
(2)
I
C
= 8 A, I
B
= 100 mA
I
C
= 10 A, I
B
= 250 mA
I
C
= 7 A, I
B
= 70 mA
V
BE(sat)
(2)
h
FE
(2)
V
F
Base-emitter saturation
voltage
DC current gain
Diode forward voltage
I
C
= 8 A, I
B
= 100 mA
I
C
= 10 A, I
B
= 250 mA
I
C
= 5 A, V
CE
= 10 V
I
F
= 10 A
V
CC
= 24 V, L = 7 mH,
V
clamp
= 400 V
(see
Figure 10: "Functional test
circuit")
300
400
Min.
Typ.
-
-
-
-
-
-
-
-
-
-
-
-
-
-
2.5
V
1.6
1.8
1.8
2.2
2.4
2.5
Max.
100
0.5
100
0.5
20
Unit
μA
mA
µA
mA
mA
V
V
V
V
V
V
V
Functional test
8
-
A
Notes:
(1)
Defined by design, not subject to production test.
test: pulse duration ≤ 300 μs, duty cycle ≤ 2 %.
(2)
Pulse
Table 5: Inductive load switching times
Symbol
t
s
t
f
Parameter
Storage time
Fall time
Test conditions
V
BE
=0, V
CC
= 12 V,
V
clamp
= 300 V, L = 7 mH,
R
BE
= 47 Ω, I
C
= 7 A, I
B
= 70 mA
(see
Figure 12: "Switching time
test circuit")
Min.
-
-
Typ.
15
0.5
Max.
-
-
Unit
μs
μs
4/11
DocID031166 Rev 1
BU931P
Electrical characteristics
2.1
Electrical characteristics (curves)
Figure 2: Safe operating area
GADG231020170915SA
Figure 3: DC current gain
Figure 4: Switching time inductive load
Figure 5: Collector-emitter saturation voltage @
hFE = 50
Figure 6: Collector-emitter saturation voltage
@ h
FE
= 100
Figure 7: Collector-emitter saturation voltage
DocID031166 Rev 1
5/11
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