2N6975, 2N6976, 2N6977, 2N6978
Typical Performance Curves
(Continued)
f
OP
, MAXIMUM OPERATING FREQUENCY (kHz)
140
T
C
=
o
C 100 90
100
f
MAX1
= 0.05/t
D(OFF)
f
MAX2
= (P
D
- P
C
)/W
OFF
2N6975
100
2N6976
80
60
40
V
GE
= 10V
R
G
= 50Ω
R
L
= 300/ceΩ
L = 50µH
V
CC
= 300V
T
J
= +150
o
C
20
1
2
3
4
5
6
7
8
9
10
I
CE
, COLLECTOR CURRENT (A)
2N6977
2N6978
W
OFF
=
∫
I
C
* V
CE
dt
V
GE
I
C
120
V
CE
FIGURE 7. TYPICAL INDUCTIVE SWITCHING WAVEFORMS
P
D
: ALLOWABLE DISSIPATION
P
C
: CONDUCTION DISSIPATION
FIGURE 8. MAXIMUM OPERATING FREQUENCY vs
COLLECTOR CURRENT (TYPICAL)
500
V
CE
, COLLECTOR-EMITTER VOLTAGE (V)
10
R
L
= 100Ω
I
G
(REF) = 0.43mA
GATE
V
GE
= 10V
EMITTER
VOLTAGE
V
CC
= BV
CES
6
375
V
CC
= BV
CES
8
250
0.75 BV
CES
0.50 BV
CES
0.25 BV
CES
0.75 BV
CES
0.50 BV
CES
0.25 BV
CES
4
125
2
COLLECTOR-EMITTER VOLTAGE
0
20
I
G
(REF)
I
G
(ACT)
TIME (µs)
80
I
G
(REF)
I
G
(ACT)
0
FIGURE 9. NORMALIZED SWITCHING WAVEFORMS AT CONSTANT GATE CURRENT
(REFER TO APPLICATION NOTES AN7254 AND AN7260)
R
L
L = 50µH
1/R
G
= 1/R
GEN
+ 1/R
GE
R
GEN
= 100Ω
V
CC
300V
+
-
20V
0V
R
GE
= 100Ω
FIGURE 10. INDUCTIVE SWITCHING TEST CIRCUIT
3-4
V
GE
, GATE-EMITTER VOLTAGE (V)
INTERSIL [ INTERSIL CORPORATION ]
