OPERATOR MANUAL
KEPCO
50 WATT SINGLE OUTPUT
An ISO 9001 Company.
JBW
50W SERIES
SWITCHING POWER SUPPLIES
I — INTRODUCTION
SCOPE OF MANUAL. This instruction manual covers
the installation and operation of the Kepco JBW 50W
Series of RoHS (Reduction of Hazardous Substances)
compliant Switching Power Supplies.
DESCRIPTION. The Kepco JBW 50W Series consists of four models of switching power supplies, each with a single output 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 47440Hz.) They will also operate on 110V to 370V d-c input. The JBW 50W Series employs a light weight ferrite core. Regulation is provided by pulse width modulation. A FET power stage, operating as a forward converter with a fixed switching frequency of 140KHz provides a smooth isolated
TABLE 1. OUTPUT RATINGS AND SPECIFICATIONS, JBW 50W SERIES
MODEL
OUTPUT VOLTS, d-c
ADJUSTMENT RANGE
CURRENT/POWER
RATINGS
CURRENT LIMIT (AMPS)
OVP RANGE (VOLTS)
EFFICIENCY
ACCEPTABLE EXTERNAL OUTPUT CAPACITOR
(1) 2.6A peak, t
(2) 0 to 100% load, 0 to 60 °C, tested with 100µF electrolytic and 0.1µF film capacitors across the measuring points, connected to the power supply
µFmax., (fixed load resistance)
RIPPLE AND
(2)
NOISE
(mV p-p)
≤ 10 seconds, not to exceed 2.1A rms, output power ≤ 50.4W.
via 5.9 in (150mm) wires; oscilloscope bandwidth
100 Va-c
240 Va-c
ripple (typ)
ripple (typ) (-10 to 0°C)
spike noise (typ)
spike noise (typ)
(-10 to 0
°C)
JBW 05-10R JBW 12-4R3 JBW 15-3R5 JBW 24-2R1
5V 12V 15V 24V
4.5-5.5V 10.8-13.2V 13.5-16.5V 21.6-26.4V
10.0A/50W 4.3A/51.6W 3.5A/52.5W
10.5 min 5.4 min 4.4 min 3.0 min
5.75-6.9 13.8-16.8 17.2-21.0 27.6-33.6
77% 80% 80% 81
79% 81% 81% 83%
10,000 10,000 10,000 10,000
80 120 120 120
140 160 160 160
120 150 150 150
160 180 180 180
≤ 20MHz.
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 individual JBW 50W Series models. Section II (following) contains specifications and operating limits common to all JBW
50W Series Models
II — SPECIFICATIONS
The following specifications are at nominal input voltages
and 25°C and apply to all models unless otherwise specified.
(1)
2.1A
/50.4W
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
NOTE: The power supply may shut down if operated at
below the input voltage range or if the input voltage
increases slowly at start up (> 1 second). To reset the
power supply, unplug the unit, wait one minute and
reapply input power.
INPUT SOURCE FREQUENCY:
Nominal 50/60 Hz;
Range 47-440 Hz (Above 66Hz to 440 Hz the leakage
current may exceed the VDE safety specification limit,)
KEPCO, INC. 131-38 SANFORD AVENUE FLUSHING, NY. 11355 U.S.A. TEL (718) 461-7000 FAX (718) 767-1102
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Data subject to change without notice 228-1511 REV 1
INPUT CURRENT: (100% load at 25°C with nominal out-
put voltage):
100V a-c input:
All except 24V Model: 0.7A typ., 0.88A max.
24V Model: 0.8A typ., 0.88A max.
240V a-c input: 0.35A typ., 0.5A 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 3.15A,
250V.
INPUT SURGE: Cold start:
100V a-c input, 100% load: 15A typ., 30.0A max.
240V a-c input, 100% load: 40A typ., 60.0A max.
LEAKAGE CURRENT: Cold start:
100V a-c and 60 Hz (single pole switching) (operating
in conformance with Den-An):
0.75mA max, 0.35mA typ
240V a-c and 60 Hz (single pole switching in conformance to UL 1950/IEC 950):
0.75mA max, 0.50mA typ
POWER FACTOR:
100V a-c: 0.99 typ.
240V a-c: 0.93 typ.
OUTPUT CHARACTERISTICS:
SOURCE EFFECT: (85 to 265 Va-c)
0.4% max.
LOAD EFFECT: measured at sensing terminals
(0% - 100% load change)
0.8% max.
TEMPERATURE EFFECT: (-10 to 50°C)
1.0% max.
COMBINED EFFECT:
2.0% max. (4% typical for overshoot at start-up)
TIME EFFECT OR DRIFT: (1/2 to 8 hr. at 25°C)
0.4% max.
TRANSIENT RECOVERY: A step load change from
50% to 100% of rated load in 50 microseconds or more
produces no more than 4% output voltage excursion.
Temperature range from -10 to 50°C. Recovery time is
1mS maximum.
HOLD UP TIME: Condition: 100% output load. Upon
input interruption the output is maintained for:
100 Va-c: 20mS typ.
240 Va-c: 20mS typ.
START UP TIME:
100 Va-c, 240 Va-c: 500ms max., 400ms typ.
OVERVOLTAGE PROTECTION: Fixed, factory set.
See Table 1. The overvoltage circuit is set by Zener diode
clamp, latching will occur.
OVERCURRENT: Square type, output voltage returns
to rated level upon removal of cause of malfunction (long
term overcurrent could damage unit).
ENVIRONMENTAL CHARACTERISTICS
OPERATING TEMPERATURE: -10 to 60°C (start up
-20 to -10°C). See the derating, Figure 1.
STORAGE TEMPERATURE: -30°C to + 75°C.
COOLING: Natural convection. Do not allow the power
supply to become dust covered because that will
decrease the cooling efficiency of the unit and cause insulation to deteriorate.
HUMIDITY: 10% to 90% relative humidity, operating
and storage, noncondensing, wet bulb temperature < or =
35°C.
VIBRATION: Three axes, one hour each, sweep time
10 min., nonoperating.
5-10 Hz., 10 mm amplitude
10-200 Hz., 2G (19.6m/s
SHOCK: Three axes, 60G (588m/s
2
) acceleration
2
), 11 mS ±5mSec
pulse duration, three shocks each axis, nonoperating, 1/2
sine pulse.
GENERAL CHARACTERISTICS
WITHSTANDING VOLTAGE: (at 5 to 35°C ambient,
45 to 85% relative humidity, cutout current 10 mA):
Between input and output terminals:
3.0 KV a-c for 1 minute (with Y-capacitor removed).
Between input terminals and ground:
2000V a-c for 1 minute.
Between output terminals and ground:
500V a-c for 1 minute.
INSULATION RESISTANCE: Between input and output, input and ground, output and ground: 100 megohms
minimum (500V d-c, 5 to 35°C ambient, 45 to 85% relative
humidity)
SAFETY: All units designed to meet UL 60950, CSA
C22.2,No. 60950-1(C-UL), and TÜV Rheinland EN60950
(ambient temp. 50°C). JBW 50W units are CE marked per
the Low Voltage Directive (LVD), EN60950.
EMC - EMISSIONS:
• Conducted Noise 0.15MHz to 30MHz: FCC
Class B, VCCI-B, EN55011-B, EN55022-B.
• Input Harmonics (on AC Mains) 0 to 2KHZ: EN
61000-3-2.
EMC - IMMUNITY:
• ESD: EN 61000-4-2 Level 4, Normal operation.
• Radiated Field Noise: EN 61000-4-3 Level 3,
Normal operation.
• Electrical Fast Transient/Burst (EFT): EN 610004-4 Level 3, Normal operation.
• Surge: EN 61000-4-5 Level 4, no damage.
• Conducted Noise: EN 61000-4-6 Level 3, Normal
operation.
• Power Frequency Magnetic Field: EN 61000-4-8
Level 4, Normal operation.
• Interruptions and voltage dips, short variations:
EN 61000-4-11, Normal operation.
WARRANTY: One year.
ORIENTATION: Vertical or horizontal (see Figure 2).
KEPCO, INC. 131-38 SANFORD AVENUE FLUSHING, NY. 11355 U.S.A. TEL (718) 461-7000 FAX (718) 767-1102
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2 228-1511 REV 1 061510
FIGURE 1. OUTPUT POWER VS. TEMPERATURE
III — INSTALLATION
MOUNTING POWER SUPPLY. Refer to Figures 2
and 4. The unit may be mounted on one mounting surface.
The air surrounding the power supply must not exceed the
ambient values given in the graph in Figure 1.
INSULATION. Install unit 0.3 inches (8mm) away from base with the use of 0.24 inch (6mm) diameter spacers attached to the PC board. Keep at least 0.16 inches (4mm) spacing around and above the unit to comply with insulation and safety requirements. An insulator must be used if the spacing is less than 0.16 inches (4mm) (see Figure 2).
FIGURE 2. VENTILATION, INSULATION AND MOUNTING
DIRECTION
VENTILATION.
It is recommended to keep at least 0.40
inches (10mm) clearance from adjacent equipment for
proper ventilation.
CONNECTIONS.
Connect the load to the power supply
by connecting the two (+) output wires from terminal block
TB2 to the load (+) terminal, and the two (–) output wires
from TB2 to the load (–) terminal. The AC input power is
applied via the terminal block TB1. Make sure to connect
the AC input Neutral and Line wires to the P2 and P1 pins
respectively of TB1 (see Figure 3). A Cable Kit (P/N 219-
0406) is available as an option from Kepco (see Figures 3
and 5). The kit includes an input cable, terminated on one
end with an input mating connector; and an output cable,
terminated on one end with an output mating connector.
IV — OPERATION
PROTECTION DIODE: When a number of power sup-
plies are operating in series, the current rating is to be limited to the rating of the power supply with the lowest rating.
A diode (Vr>2 Vo, If>2Io, Vf<< low) must be connected to
the power supply output terminals to protect the unit from
reverse voltage.
Σ
FIGURE 3. LOAD CONNECTIONS
KEPCO, INC. 131-38 SANFORD AVENUE FLUSHING, NY. 11355 U.S.A. TEL (718) 461-7000 FAX (718) 767-1102
061510 228-1511 REV 1 3
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.
INPUT
FIGURE 4. JBW 50W MECHANICAL OUTLINE DIAGRAM
OUTPUT
Ter mi-
nal
1 Input L
2 Input N
3 Ground
4 Ground
5 Output (-)
6 Output (+)
Function
Pad
Connector Terminal Pin
Input
Output
(1) JST= Japan Solderless Terminal Mfg. Co.
(2) LCE= Long Chu Electronics Co.
(3) MLX = Molex
(4) Optional cable kit (P/N 219-0408) includes
one input and one output cable (one meter
long) with mating connectors for TB1 and
TB2, unterminated at other end.
FIGURE 5. INPUT/OUTPUT CONNECTIONS
Mating Connectors
SVH-21T-P1.1
T101 H101-05
50539-8100 51144-0500
SVH-21T-P1.1
T101
50539-8100 51144-0400
(4)
Socket
Housing
VHR-5N
VHR-4N
H101-04
MFR
JST
LCE
MLX
JST
LCE
MLX
(1)
(2)
(3)
(1)
(2)
(3)
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: hq@kepcopower.com
4 228-1511 REV 1 061510
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