KEPCO MTW 60W Instruction Manual

I N S T R U C T I O N M A N U A L
KEPCO
I — INTRODUCTION
SCOPE OF MANUAL.
This instruction manual covers the installation and operation of the Kepco MTW 60W Switching Power Supply,
Model MTW 60-51212K.
DESCRIPTION.
The Kepco MTW 60W is a PC card style, triple-output switching power supply. 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 MTW 60W employs a light weight ferrite core with 70 KHz switching frequency for the +5V output and 100KHz for
the ±12V outputs. Regulation is provided by pulse width modulation. A FET power stage, operating in the flyback mode provides smooth iso-
lated d-c outputs. A trimmer provides fine adjustment of the 5V output. The ±12V outputs have a common return. DC Output power is shared
between +5V, +12V and -12V (60W max. total). A thermistor circuit prevents excessive turn-on current surge. Overvoltage protection is pro-
vided. Overcurrent protection with automatic recovery from short circuit is featured. A steel cover (Model CA 41) is available as an option.
Table 1 contains output specifications. Section II (following) contains specifications and operating limits.
II — SPECIFICATIONS
The following specifications are at nominal input voltages at 25°C unless otherwise specified.
SPECIFICATION
OUTPUT VOLTS, d-c
SETTING TOLERANCE (V)
ADJUSTMENT RANGE
OUTPUT
CURRENT
(A)
SOURCE EFFECT
LOAD EFFECT
TEMPERATURE EFFECT
COMBINED EFFECT
TIME EFFECT (Drift)
OVERCURRENT (AMPS)
OVERVOLTAGE SETTING (VOLTS)
EFFICIENCY (typ.)
ACCEPTABLE OUTPUT CAP.
RIPPLE
ripple (-10-0ªC)
AND
(1)
NOISE
spike noise (typ)
(mV p-p)
spike noise (-10-0ªC)
(1) Switching component
°C, tested with 100µF electrolytic and 0.1µF film capaci-
tors across the load and connected to the power supply
via 5.9 in (150mm) wires.
(2) Hiccup type; automatic recovery after cause of overcur-
rent is removed. Avoid overcurrent operation to prevent
component degradation.
INPUT VOLTAGE:
CAUTION: Operation at voltage below specified range for more than 10 minutes may cause component degradation.
Nominal 100-120V a-c, 200-240V a-c, range: 85-265V a-c (0 to 100% load, -10 to 60°C)
d-c range: 110 -370V d-c (Safety agency approval applies only to a-c input operation.)
INPUT SOURCE FREQUENCY:
Nominal 50/60 Hz; Range 47-440 Hz. (0 to 100% load, -10 to 60°C). At 440 Hz the leakage current exceeds the VDE safety specification
limit.
KEPCO, INC.
©2012, KEPCO, INC
Data subject to change without notice
An ISO 9001 Company.
60 WATT TRIPLE OUTPUT
SWITCHING POWER SUPPLY
TABLE 1. MTW 60W OUTPUT SPECIFICATIONS
OUTPUT 1
5V
4.9-5.1
(6)
5.00-5.25
5.0
RATED
0
MINIMUM
(5)
7.0
PEAK
1% max.
2% max.
2% max.
2.5% max.
1% max.
(2)
7.4 min.
(3)
5.8 min.
76%
100 Va-c
76%
240 Va-c
(4) 10000
(µFmax.)
80
ripple (typ)
140 max.
120
160 max.
≤
20KHz, 0 to 100% load, 0 to 60
131-38 SANFORD AVENUE
http://www.kepcopower.com
OUTPUT 2 OUTPUT 3
+12
11.4-12.6 11.4-12.6
FIXED FIXED
2.5
0
3.5
0.4% max. 0.4% max.
2% max. 1% max.
2% max. 1% max.
2.5% max. 2% max.
1% max. 1% max.
3.7 min. 0.75 min.
13.8 min.
76%
76%
5000
100
160 max. 160 max.
150
180 max. 180 max.
(3) Zener diode clamp method; protects load against faulty power supply;
operation could require power supply service.
(4) +5V output may drop during startup.
(5) Peak current acceptable as long as rms output current within 10 seconds is
within rated value.
(6) Adjustable using 5V Output Voltage Adjustment trimpot.
FLUSHING, NY. 11355 U.S.A.
email: hq@kepcopower.com
228-1546 REV 4
MTW
60W
CONDITON
–12V +5V floating from ±12V
0.5
0
0.7 Within 10 seconds.
85-132Va-c, 170-265Va-c
10-100% load
-10 to 50°C
Overshoot at startup: 4% typ.
1/2 to 8 hr.
-
76%
76%
3000
Fixed load resistance
100
150
TEL (718) 461-7000 FAX (718) 767-1102
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