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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
012345
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
0468102
OUTH (V)
FB3 (V)
5 V
2 V 1 µs
t (µs)
Conversion efficiency vs. charge current
(Fixed voltage mode)
Conversion efficiency vs. charge voltage
(Fixed current mode)
Conversion efficiency η (%)
BATT charge current IBATT (A)
Conversion efficiency η (%)
BATT charge voltage VBATT (V)
BATT voltage vs. BATT charge current
VIN = 19 V
BATT : Electronic load,
(Product of KIKUSUI PLZ-150W)
BATT voltage VBATT (V)
BATT charge current IBATT (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)