KEPCO FAW 15W Series User Manual

Kepco, I — introduction, Ii — specifications

Data subject to change without notice

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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

to 50

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

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

or t

equal to or greater than 50

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)

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)

source (max)

switching (typ)

switching (max)

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