Epson Power Supply S1F70000 - Manual (Page 184)

S1F71100 Series
S1F70000 Series
EPSON 4–39
Technical Manual
S1F71100
Series
EXAMPLE OF EXTERNAL CONNECTION OF REFERENCE CIRCUIT
Example of Standard Circuit
–
+
+
–
+
–
POFFX
I SENSE
SWO
V SS
V DD
V DD
CIN2 CIN1
SSCAP
SSCAP
soft start
V O
ERCAP
ERCAP
phase
compen-
sation
Low-voltage
protection circuit
Error amplifier
Driver
Overcurrent
protection
circuit
Load current
detection resistor R
Pch
MOSTr
D CV OUT
V O
3.3V
L
PWM circuit
Soft start Oscillator
Reference
voltage circuit
Parts examples
CIN1 100
µ
F (Sanyo 16SA100M)
CIN2 1
µ
F
SSCAP 0.1
µ
F
ERCAP 330pF
R 100m
Ω
PchTr (Hitachi 2SJ484)
L 47
µ
H (Sumida CD105)
CV O 47
µ
F (Sanyo 16SA47M)
D Schottkey (Rohm RB161L-40)
* Characteristics vary with applicable conditions and
parts. Select proper parts after sufficient evaluation.