KEPCO FAW 25W User Manual

INSTRUCTION MANUAL

KEPCO

An ISO 9001 Company.

FAW

KEPCO SINGLE OUTPUT 25 WATT

HIGH FREQUENCY SWITCHING POWER SUPPLIES

I — INTRODUCTION

The Kepco FAW 25 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 inpu t. A thermistor soft-start circu it limits start-up surge. Surface m ount technolog y permits efficient c omponent layo ut 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 stee l
cover (Model CA 25) 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 ra ti n g. This pa ge
contains specificatio ns for each model of the FAW 25 Watt Series. Environmental specificatio ns f or eac h model are the same.

II — SPECIFICATIONS

The following specificat ions apply to FAW 25 Watt Series models. Other models are also avai l ab le ; co nsult your Kepco represen tative for their specifi­cations.

TABLE 1. OUTPUT RATINGS AND SPECIFICATIONS, FAW 25W SERIES

MODEL FAW 5-5K FAW 12-2.1K FAW 15-1.7K FAW 24-1.1K

OUTPUT VOLTS, d-c (NOMINAL)

ADJUSTMENT RANGE

OUTPUT CURRENT (NOMINAL)

OUTPUT POWER (MAXIMUM)

RIPPLE

AND

NOISE

(mV p-p)

0-50°C

10-100% LOAD

OVERVOLTAGE SETTING 25°C, NOM. INPUT

OVERCURRENT SETTING 25°C, NOM. INPUT

source (typ)

source (max)

switching (typ)

switching (max)

spike noise (d-c—50MHz)

5V 12V 15V 24V

4.2-5.5V 10.8-13.2V 13.5-16.5V 21.6-26.4V

5.0A 2.1A 1.7A 1.1A

25.0W 25.2W 25.5W 26.4W
9171717

18 35 35 35
31 32 42 57
62 65 85 115

120 190 220 310

6.0-6.9V 13.7-15.7V 17.0-19.0V 27.0-30.5V

5.5-7.5A 2.3-3.3A 1.9-2.8A 1.2-1.8A

INPUT:

Voltage: 120V a-c/240V a-c nominal; Range 85- 264V a-c; 110-370V d-c.
Frequency: Nominal 5 0- 60 H z; Range 47-440Hz (at 440Hz leakage current exc eeds UL/VDE safety spec . li m it) .
Current (nominal output at rated load): @120V a-c rms: 0.55A typ . , 0.7A max; @240V a-c rms: 0.35 A typ. , 0.4 5A m ax .
Initial Turn-on Surge: (one-half of first input c ycle): @120V a-c rms, 43A max., @2 40V a-c rms, 85A max.

STABILIZATION:

Source Effect: Range 85-132V a- c or 170 -2 64V a-c, 1.0% typ.; 2.0% max .
Load Effect: Range 10%-10 0% lo ad , 1.0% typ.; 2.0% max.
Temperature Effect: Rang e 0
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

RECOVERY CHARACTERISTICS:

1% of the original setting in <2ms

+

START-UP TIME:
HOLDUP TIME:
DIELECTRIC STRENGTH:

Between input and output : 2K V a- c fo r on e m i nut e.
Between input and output with Y- capacitor removed: 3.75 KV a- c f or one m inute.
Between input and case (gr ound): 2KV a-c for one minute .

INSULATION RESISTANCE:

100 Megohms min. (500V d-c).

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©1995, KEPCO, INC
Data subject to change without notice

500 ms. maximum.

15 ms. min (100V a-c), 20 ms. typ. (120V a-c).

o

to 50oC, 1.0% typ.; 2.0% max.

o

C).

A step load change from 50% to 100% produces less t han +4% output excur sion. Recovery occur s to within

(tr or tf equal to or greater than 50µsec at load change).

Between input and grou nd, out put and ground, input and ou t put ;

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LEAKAGE CURRENT

(UL method, 120V a-c, 50 -6 0H z): 0.5 mA maximum.
(VDE method, 240V a-c): 0.75 mA maximum.

SAFETY:
(“POWER OK” SIGNAL OUTPUT:
CONNECTOR TYPES:

TC100F-2.

CONNECTOR KIT:

Model Kit P/N 518-0029 . The connector is provided wi th 1 me te r length leads for trimming to de si re d lengths.

EMI:
VIBRATION:

SHOCK:

OPERATING TEMPERATURE:
STORAGE TEMPERATURE:
OPERATING AND STORAGE RELATIVE HUMIDITY:
FUSE:
WARRANTY:

UL 478 recognized; CSA 14 02B certified, VDE 0806, IEC 380 approved by TÜV Rheinland

The unit supplies a “POWER O K” log i c 1 signal at CP51 (see Figure 2).

Refer to the Mechanical Outline Drawing. The mating connector for CP51 is a Panduit, P/N CT10F22-2: Cover, P/N

Kepco furnishes an option al connector kit with the specified conn ector listed above. The kit may be order ed under Kepco

Designed to meet FCC Class B (100-120V a-c) and VDE 0871 Class B (220-240V a-c)

5-10 Hz, 10 mm amplitude.
10-55 Hz, 2g accelera tion .

Acceleration: 20g
Duration: 11ms +

(non-operating, one hour on each one of the three ax es) :

(non-operating, one- hal f sinusoidal pulse, three shocks to each axis):

5ms

See Figure 1.

-40oC to +75oC.
up to 95% (wet bulb temp. <35oC non-condensing)

Quick acting 2.5A, 250V; (5.2 x 20mm), S an- O P/N MT 4 2. 5A; Kepco P/N 541-0108.

1 year.

FIGURE 1. OUTPUT POWER RATING VS. AMBIENT TEMPERATURE FIGURE 2. “POWER OK” SIGNAL RELATED TO OUTPUT

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3040229/1161

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