Epson – Epson Power Supply S1F70000 User Manual
Page 97
S1F76640 Series
2–54
EPSON
S1F70000 Series
Technical Manual
(13) Step-up power conversion
(14) Step-up power conversion
efficiency vs. Oscillation frequency 2
efficiency vs. Oscillation frequency 3
(15) Step-up start voltage (1) vs. Load resistance
(16) Stabilization output saturation
resistance vs. Load current
100
90
80
70
60
50
40
30
20
10
0
P
eff[%]
10
1
100
1000
fosc[kHz]
100
90
80
70
60
50
40
30
20
10
0
P
eff[%]
10
1
100
1000
fosc[kHz]
Ta=25˚C
V
DD
=3V
C
1
to C
4
=10
µ
F
I
O
=10mA
I
O
=2mA
I
O
=5mA
Ta=25˚C
V
DD
=2V
C
1
to
C
4
=10
µ
F
I
O
=5mA
I
O
=2mA
I
O
=1mA
I
O
=0.5mA
I
O
=1mA
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1.0
V
ST
A1
[V]
0.5
0.4
0.3
0.2
0.1
0
V
REG
–V
O
[V]
100
1000
10000
100000
R
L
[
Ω
]
I
O
[mA]
0
5
10
15
20
25
30
Ta=25˚C
C
1 to
C
4
=10
µ
F
R
OSC
=1M
Ω
V
O
=8V
V
O
=12V
V
O
=20V
Ta=25˚C
C
1
to
C
4
=10
µ
F