KEPCO FAW 15W Series User Manual
Kepco, I — introduction, Ii — specifications
©1996, KEPCO, INC
1
Data subject to change without notice
228-1156
I N S T R U C T I O N M A N U A L
FAW
KEPCO
KEPCO, INC. !"! 131-38 SANFORD AVENUE !" FLUSHING, NY. 11352 U.S.A.!!" TEL (718) 461-7000!!"! FAX (718) 767-1102!!
http://www.kepcopower.com "! email: [email protected]
An ISO 9001 Company.
KEPCO SINGLE OUTPUT 15 WATT
HIGH FREQUENCY SWITCHING POWER SUPPLIES
I — INTRODUCTION
The Kepco FAW 15 Watt Series low profile high frequency switching power supplies employ flyback conversion and operate with a 70% efficiency with
either a-c or d-c input. A thermistor soft-start circuit limits start-up surge. Surface mount technology permits efficient component layout for minimum
mounting space. Four models may be selected for outputs of 5, 12, 15 or 24V. “POWER OK” logic and a green “POWER OK” light are provided. A steel
cover (Model CA 24) is available as an option. Output voltage may be adjusted with a trimmer accessible near the input-output terminal strip. When the
input is cut off, the output is maintained for 15 milliseconds minimum. EMI filtering meets FCC Class B rating and VDE 0871 Class B rating. This page
contains specifications for each model of the FAW 15 Watt Series. Environmental specifications for each model are the same.
II — SPECIFICATIONS
The following specifications apply to FAW 15 Watt Series models. Other models are also available; consult your Kepco representative for their specifi-
cations.
INPUT:
Voltage: 120V a-c/240V a-c nominal; Range 85-264V a-c; 110-370V d-c.
Frequency: Nominal 50-60 Hz; Range 47-440Hz (at 440Hz leakage current exceeds UL/VDE safety spec.limit).
Current (nominal output at rated load): @120V a-c rms: 0.3A typ., 0.4A max; @240V a-c rms: 0.2A typ., 0.3A max.
Initial Turn-on Surge: (one-half of first input cycle): @120V a-c rms, 22A max., @240V a-c rms, 34A max.
STABILIZATION:
Source Effect: Range 85-132V a-c or 170-264V a-c, 1.0% typ.; 2.0% max.
Load Effect: Range 10%-100% load, 1.0% typ.; 2.0% max.
Temperature Effect: Range 0
o
to 50
o
C, 1.0% typ.; 2.0% max.
Combined Effect: 2.6% typ.; 4.0% max. (includes source, load, and temperature effects).
Drift: 0.1% typ.; 0.5% max. (1/2 hr-8 hr at 25
o
C).
RECOVERY CHARACTERISTICS:
A step load change from 50% to 100% produces less than +4% output excursion. Recovery occurs to within
+1% of the original setting in <2 ms
(t
r
or t
f
equal to or greater than 50
µ
sec at load change).
START-UP TIME:
500 ms. maximum.
HOLD-UP TIME:
15 ms. min (100V a-c), 20 ms. typ. (120V a-c).
DIELECTRIC STRENGTH:
Between input and output: 2KV a-c for one minute.
Between input and output with Y-capacitor removed: 3.75KV a-c for one minute.
Between input and case (ground): 2KV a-c for one minute.
INSULATION RESISTANCE:
Between input and ground, output and ground, input and output;
100 Megohms min. (500V d-c).
TABLE 1. OUTPUT RATINGS AND SPECIFICATIONS, FAW 15W SERIES
MODEL
FAW 5-3K
FAW 12-1.3K
FAW 15-1K
FAW 24-0.7K
OUTPUT VOLTS, d-c (NOMINAL)
5V
12V
15V
24V
ADJUSTMENT RANGE
4.2-5.5V
10.8-13.2V
13.5-16.5V
21.6-26.4V
OUTPUT CURRENT (NOMINAL)
3.0A
1.3A
1.0A
0.7A
OUTPUT POWER (MAXIMUM)
15.0W
15.6W
15.0W
16.8W
RIPPLE
AND
NOISE
(mV p-p)
0-50°C
10-100% LOAD
source (typ)
10
20
20
30
source (max)
30
50
50
50
switching (typ)
15
10
10
20
switching (max)
30
30
30
50
spike noise (d-c—50MHz)
120
190
220
310
OVERVOLTAGE SETTING 25 °C, NOM. INPUT
6.0-6.9V
13.7-15.7V
17.0-19.0V
27.0-30.5V
OVERCURRENT SETTING 25 °C, NOM. INPUT
3.3-5.5A
1.4-2.5A
1.1-2.0A
0.8-1.4A