ACT4455
Rev 2, 21-Nov-12
TYPICAL PERFORMANCE CHARACTERISTICS
(Circuit of Figure 7, RCS1 = RCS2 = 50mꢀ, L = 18µH, CIN = 150µF, COUT = 680µF, TA = 25°C, unless otherwise specified.)
Efficiency vs. Load current
Switching Frequency vs. Input Voltage
100
90
80
70
60
50
250
200
150
100
50
VIN = 12V
VIN = 24V
VIN = 32V
0
5
10
15
20
25
30
35
40
0
1000
2000
3000
4000
5000
Input Voltage (V)
Efficiency (%)
Maximum Peak Current vs. Duty Cycle
Switching Frequency vs. Feedback Voltage
250
9
8.5
8
200
150
100
50
7.5
7
6.5
6
0
0
0.2
0.4
0.6
0.8
1
0.15
0.25
0.35
0.45
0.55
0.65
0.75 0.85
Feedback Voltage (mV)
Duty cycle
Input Current vs. Input Voltage at No Load
Standby Current vs. Input Voltage
14
940
920
900
880
860
840
820
800
12
10
8
6
4
2
0
5
10
15
20
25
30
35
40
5
10
15
20
25
30
35
40
Input Voltage (V)
Input Voltage (V)
Innovative PowerTM
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