MEAN WELL SPV-300-48 [2/3] Block diagram
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MEAN WELL SPV-300-48 [2/3] Block diagram

MEAN WELL SPV-300-48 [2/3] Block diagram
USP-225 seriesUSP-225 seriesSP-320 series
Mechanical Specification
Derating Curve Static Characteristics
File Name:SPV-300-SPEC 2017-07-14
Case No. 912G Unit:mm
AMBIENT TEMPERATURE ( )℃ INPUT VOLTAGE (VAC) 60Hz
9088 95 100 115 135 155 175 195 230 264
300
250
200
150
100
50
25
LOAD (%)
LOAD (%)
10 20 30 40 50 60 70
20
40
60
80
100
-20 0
300W Single Output with PFC Function
(HORIZONTAL)
Block Diagram
fosc : 100KHz
PWM & PFC
CIRCUIT
DETECTION
O.L.P.
EMI
FILTER
RECTIFIERS
POWER
SWITCHING
FILTER
&
RECTIFIERS
+V
-V
I/P
FG
CONTROL
O.V.P.
O.T.P.
INRUSH
CURRENT
ACTIVE
LIMITING
FANFAN
CONTROL
SPEED
90
100
80
70
60
50
40
SPV-300 series
135
9.5
8
5
4-M4 L=5mm
5-M3 L=3mm
1
2
3
4
5
6
7
8
9
27.5
19
177.5
32.5 150
117.5
15
16
10
95
50
32.5
37.5
50.5
115
48.7
36.7
32.5
150
215
6-M4 L=5mm
25
50
14 max.
Air flow
direction
Terminal Pin No. Assignment :
Pin No. Pin No.
15
3
4
2 6~7
8~9
Assignment Assignment
AC/L PV
FG
RC
AC/N DC OUTPUT -V
DC OUTPUT+V
PV
RC
+V ADJ.

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