©2010, KEPCO, INC
1
Data subject to change without notice
228-1413 REV 5
KEPCO, INC.
131-38 SANFORD AVENUE
FLUSHING, NY. 11355 U.S.A.
TEL (718) 461-7000
FAX (718) 767-1102
http://www.kepcopower.com
email: [email protected]
O P E R A T O R M A N U A L
KEPCO
An ISO 9001 Company.
JBW
15W SERIES
15 WATT SINGLE OUTPUT
SWITCHING POWER SUPPLIES
I — INTRODUCTION
SCOPE OF MANUAL.
This instruction manual covers
the installation and operation of the Kepco JBW 15W
Series of RoHS (Reduction of Hazardous Substances)
compliant Switching Power Supplies.
DESCRIPTION.
The Kepco JBW 15W Series consists of
four models of switching power supplies, with a single out-
put as shown in Table 1. Units may be operated with a
nominal 100 to 120V a-c and 220 to 240V a-c (input voltage
range 85 to 265 Va-c), 50-60 Hz (input frequency range 47-
440Hz.) They will also operate on 110V to 370V d-c input.
The JBW 15W Series employs a light weight ferrite core
with a variable switching frequency. Regulation is provided
by pulse width modulation. A FET power stage, operating in
the ringing choke converter mode provides a smooth iso-
lated d-c output. A thermistor circuit prevents excessive
turn-on current surge. Overvoltage protection is provided.
Current limiting with automatic recovery from short circuit is
featured. Units are manufactured on an open frame pc
board.
Table 1 contains specifications and operating limits of indi-
vidual JBW 15W Series models. Section II (following) con-
tains specifications and operating limits common to all JBW
15W Series Models.
II — SPECIFICATIONS
The following specifications are at nominal input voltages at
25°C unless otherwise specified.
INPUT CHARACTERISTICS:
INPUT VOLTAGE:
(0 to 100% load, -10 to 60°C)
Nominal 100-120V a-c, 220-240V a-c
Range: 85-265V a-c, 110 -370V d-c
INPUT SOURCE FREQUENCY:
Nominal 50/60 Hz;
Range 47-440 Hz
INPUT CURRENT:
(100% load at 25°C with nominal out-
put voltage):
100V a-c input:
0.36 typ., 0.43 max.
240V a-c input:
0.20A typ., 0.24A max.
INPUT PROTECTION AND SOFT START:
A thermis-
tor circuit reduces start-up surge. Units are protected
against shorts by an input fuse. Fuse value 2.0A, 250V.
TABLE 1. OUTPUT RATINGS AND SPECIFICATIONS, JBW 15W SERIES
MODEL
JBW 05-3R0
JBW 12-1R3
JBW 15-1R0
JBW 24-0R7
OUTPUT VOLTS, d-c
5V
12V
15V
24V
SETTING TOLERANCE
4.75-5.25V
11.4-12.6V
14.25-15.75V
22.8-25.2V
ADJUSTMENT RANGE
FIXED
FIXED
FIXED
FIXED
MAXIMUM
OUTPUT
RATINGS
50° C amb.
3.0A/15W
1.3A/15.6W
1.0A/15.0W
0.7A/16.8W
60° C amb.
2.1A/10.5W
0.9A/10.92W
0.7A/10.5W
0.49A/11.76W
OUTPUT CURRENT (AMPS)
3.0
1.3
1.0
0.7
CURRENT LIMIT (AMPS)
3.15 min
1.37 min
1.05 min
0.74 min
OVP RANGE (VOLTS)
5.75 min
13.8 min
17.25 min
27.6 min
EFFI-
CIENCY
100 Va-c
72%
76%
76%
78%
240 Va-c
72%
74%
74%
76%
OUTPUT CAPACITOR
µFmax., (fixed load resistance)
10000
5000
4000
2000
RIPPLE
AND
NOISE
(1)
(mV p-p)
ripple (typ)
80
120
120
120
ripple
-10-0°C, max
140
160
160
160
spike noise
(max)
120
150
150
150
spike noise
-10-0°C, max
160
180
180
180
(1)
0 to 100% load, 0 to 50 °C, tested with 100µF electrolytic and 0.1µF film capacitors across the measuring points, connected to the power supply
via 5.9 in (150mm) wires; Measured with a 20 MHz bandwidth oscilloscope.
