< Dual-In-Line Package Intelligent Power Module >
Series Application note
Publication Date: September 2016
49
4.2 Bootstrap supply circuit current at switching state
Bootstrap supply circuit current I
DB
at steady state is 0.55mA maximum. At switching state, the circuit current
exceeds 0.55mA and increases proportional to carrier frequency, because gate charge and discharge are
repeated at each switching state. Fig.4-2-1~6 show typical I
DB
vs. carrier frequency fc characteristics for
series.
[Condition]
(1) For 1200V series, V
CC
=800V, V
D
=V
DB
=15V, Tj=125°C, Duty=50%
(2) For 600V series, Vcc=400V, V
D
=V
DB
=15V, Tj=125°C, Duty=50%
0.00
0.20
0.40
0.60
0.80
1.00
1.20
0
5
10
15
20
C
ir
c
u
lt c
u
rr
e
n
t
( m
A
)
Carrier frequency (kHz)
Fig. 4-2-1. I
DB
vs. Carrier frequency for PSS05M(N)C1FT
0.00
0.20
0.40
0.60
0.80
1.00
1.20
1.40
0
5
10
15
20
C
ir
c
u
lt c
u
rr
e
n
t
( m
A
)
Carrier frequency (kHz)
Fig. 4-2-2. I
DB
vs. Carrier frequency for PSS10M(N)C1FT
0.00
0.20
0.40
0.60
0.80
1.00
1.20
1.40
1.60
1.80
0
5
10
15
20
C
ir
c
u
ltc
u
rr
e
n
t
( m
A
)
Carrier frequency (kHz)
Fig. 4-2-3. I
DB
vs. Carrier frequency for PSS15M(N)C1FT