Reference data, Mb3878 – FUJITSU MB3878 User Manual
Page 19
MB3878
19
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REFERENCE DATA
100
98
96
94
92
90
88
86
84
82
80
10 m
100 m
1
10
100
98
96
94
92
90
88
86
84
82
80
0
2
4
6
8
10
12
14
16
18
16
14
12
10
8
6
4
2
0
0
1
2
3
4
5
DCC : Dynamically Controlled Charging
Dead Battery MODE
DCC MODE
20
15
10
5
0
20
15
10
5
0
0
80
120
160
200
t (ms)
40
BATT (V)
CTL (V)
5 V
5 V
20 ms
20
15
10
5
0
4
2
0
0
4
6
8
10
2
OUTH (V)
FB3 (V)
5 V
2 V
1
µ
s
t (
µ
s)
Conversion efficiency vs. charge current
(Fixed voltage mode)
Conversion efficiency vs. charge voltage
(Fixed current mode)
Conversion efficiency
η
(
%
)
BATT charge current I
BATT
(A)
Conversion efficiency
η
(
%
)
BATT charge voltage V
BATT
(V)
BATT voltage vs. BATT charge current
VIN
=
19 V
BATT : Electronic load,
(Product of KIKUSUI PLZ-150W)
BATT voltage
V
BATT
(V)
BATT charge current
I
BATT
(A)
VIN
=
19 V
BATT
charge voltage
=
12.6 V
f
OSC
=
277.9 kHz
η
(
%
)
=
(V
BATT
×
I
BATT
)
/
(VIN
×
IIN)
×
100
Soft-start operating waveforms
VIN
=
19 V
Load : BATT
=
20
Ω
−
INE2
=
0 V
VIN
=
19 V
f
OSC
=
277.9 kHz
Load : BATT
=
1 A
DC/DC converter switching waveforms
VIN
=
19 V
BATT : Electronic load,
(Product of KIKUSUI PLZ-150W)