KEPCO MTW 15 - Manual

©2008, KEPCO, INC 1
Data subject to change without notice 228-1548 REV 2
I N S T R U C T I O N M A N U A L
KEPCO
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]
An ISO 9001 Company.
MTW
15W
15 WATT TRIPLE OUTPUT
SWITCHING POWER SUPPLY
I — INTRODUCTION
SCOPE OF MANUAL. This instruction manual covers the installation and operation of the Kepco MTW 15W Switching Power Supply,
Model MTW 15-51212K.
DESCRIPTION. The Kepco MTW 15W 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 15W employs a light weight ferrite core with 30-250 KHz switching frequency. Regulation is provided by
pulse width modulation. Integral regulator chips provide smooth isolated 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 (15W max. total). A thermistor circuit prevents
excessive turn-on current surge. Overvoltage protection is provided. Overcurrent protection with automatic recovery from short circuit is fea-
tured. A steel cover (Model CA 39) 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.
INPUT VOLTAGE:
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).
TABLE 1. MTW 15W OUTPUT SPECIFICATIONS
SPECIFICATION OUTPUT 1 OUTPUT 2 OUTPUT 3 CONDITON
OUTPUT VOLTS, d-c 5V +12 –12V +5V floating from ±12V
SETTING TOLERANCE (V) 4.9-5.1 11.4-12.6 11.4-12.6
ADJUSTMENT RANGE 5.00-5.25 (5) FIXED FIXED
OUTPUT
CURRENT
(A)
RATED 2.0 0.3 0.2
MINIMUM 0 0 0
PEAK
(4) 3.0 0.6 0.3 Within 10 seconds.
SOURCE EFFECT 0.4% max. 0.4% max. 0.4% max. 85-132Va-c, 170-265Va-c
LOAD EFFECT 2% max. 1% max. 1% max. 10-100% load
TEMPERATURE EFFECT 1% max. 1% max. 1% max. -10 to 50°C
COMBINED EFFECT 2% max. 2% max. 2% max. Overshoot at startup: 4% typ.
TIME EFFECT (Drift) 2% max. 1% max. 1% max. 1/2 to 8 hr.
OVERCURRENT (AMPS)
(2) 3.15 min. 0.63 min. 0.32 min.
OVERVOLTAGE SETTING (VOLTS)
(3) 5.7 min. - -
EFFICIENCY (typ.)
100 Va-c 71% 71% 71%
240 Va-c 70% 70% 70%
ACCEPTABLE OUTPUT CAP. (µFmax.) 10000 5000 - Fixed load resistance
RIPPLE
AND
NOISE
(1)
(mV p-p)
ripple (typ) 100 120 120
ripple (-10-0ªC) 140 max. 160 max. 160 max.
spike noise (typ) 120 150 150
spike noise (-10-0ªC) 160 max. 180 max. 180 max.
(1) Switching component
≤
20KHz, 0 to 100% load, 0 to 60
°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) Fold back method; automatic recovery after cause of
overcurrent is removed. Avoid overcurrent operation to
prevent component degradation.
(3) Zener diode clamp method; protects load against faulty power supply;
operation could require power supply service.
(4) Peak current acceptable as long as rms output current within 10 seconds is
within rated value.
(5) Adjustable using 5V Output Voltage Adjustment trimpot.