KEPCO HSF 3.3-25-1UR Instruction Manual

I N S T R U C T I O N M A N U A L
KEPCO
I — INTRODUCTION
The Kepco HSF-1UR 100 Watt Series hot swappable, high
frequency switching, plug-in power supplies with built-in
power factor correction (PFC) employ forward conversion
and are designed to operate in a fault tolerant power sys-
tem with either a-c or d-c input. A thermistor soft-start cir-
cuit limits start-up surge; an input fuse (3A, 250V) protects
against shorts. Built-in OR-ing diodes (all models) and a
forced current share circuit (all models except 3.3V) allow
configuration of all models for hot-swap and parallel-redun-
dant N+1 operation.
The heart of the HSF-1UR Series is a Kepco RTW power
supply allowing them to weigh less and have improved effi-
ciency (input current) specifications over the older HSF-1U
Series. There are three options available: C, X and Y. Fea-
tures for all models are the same except as follows: C
option (-1URC) models include a current sensing resistor,
allowing external current monitoring within ±10% (contact
Kepco if greater accuracy required). X option (-1URX) mod-
els have remote control, the ability to turn the unit on and
off from a remote location. Y option models (-1URY)
include both current monitoring and remote on-off capabili-
ties.
MODEL
OUTPUT VOLTS, d-c (NOMINAL)
ADJUSTMENT RANGE
OUTPUT CURRENT (NOMINAL)
OUTPUT POWER (MAXIMUM)
RIPPLE AND
switching (typ)
NOISE (mV p-p)
spike noise
0-40°C,
(d-c—50MHz)
10-100% LOAD
OVERVOLTAGE SETTING
(25 °C, Nom. Input)
OVERCURRENT SETTING
w(25 °C, Nom. Input)
Rectangular type characteristic
Sense Resistor Value (milliohms)
(1) Unless otherwise noted, specifications are identical for all options.
(2) Forced current Share not available for 3.3V Models.
(3) Derates same as Output Power.
(4) See power rating curve, Figure 4. Exceeding maximum power rating may result in
oscillation or a drop in output current or voltage.
KEPCO, INC. 131-38 SANFORD AVENUE
©2013, KEPCO, INC
Data subject to change without notice
An ISO 9001 Company.
KEPCO SINGLE OUTPUT, 1U SIZE, 100 WATT
HOT SWAP PLUG-IN POWER SUPPLIES
TABLE 1. OUTPUT RATINGS AND SPECIFICATIONS, HSF-1UR 100W SERIES
HSF 3.3-25-1UR HSF 5-20-1UR
(1) (2) (6) (1)
3.3V 5V
2.8 - 3.5V 4.3 - 5.3V
(3) (3)
25A 20A
(4)
82.5W 100W
80 80
120 120
3.75 - 4.7V 5.6 - 6.4V
26.2A min. 21.0A min.
(5)
5 5
FLUSHING, NY. 11355 U.S.A.
http://www.kepcopower.com
These power supplies are designed to be used with
Kepco's Series RA 19-1U rack adapters. The RA 19-1U
rack adapter accepts up to four 50-, 100- or 150-Watt units
(see Figure 1). All input/output connections are through a
24-pin connector that plugs in to the rack adapter. All exter-
nal connections are made through the rack adapter (refer
to the RA 19-1U manual which is available for free down-
load at:
www.kepcopower.com/support/opmanls.htm#ra19-1u
Seven models may be selected for outputs of 3.3, 5, 12, 15,
24, 28 or 48V (see Table 1).
When the input is cut off, the output is maintained for 20
milliseconds minimum. If the power supply shuts down due
to an output overvoltage condition, it is then necessary to
wait 60 seconds minimum before turning the unit on again.
EMI filtering is designed to meet FCC Class B rating and
VDE 0871 Class B rating. Table 1 contains specifications
that vary for each model of the HSF-1UR 100 Watt Series.
Specifications common to all models are listed on page 4.
HSF 12-8.4-1UR HSF 15-6.7-1UR
(1) (1)
12V 15V
11.4 - 12.6V 13.5 - 16.5V
8.4A 6.7A
100.8W 100.5W
100 100
150 150
13.3 - 15.4V 16.8 - 18.8V
8.82A min. 7.03A min.
10 20
(5) C and Y Models only (see "Current Monitor." on page 2 for details).
(6) Natural convection cooled; see Figure 5.
TEL (718) 461-7000
email: hq@kepcopower.com
228-1568 REV 8
HSF-1UR
100W SERIES
HSF 24-4.2-1UR HSF 28-3.5-1UR
(1) (1)
24V 28V
19.2 - 26.0V 26.5 - 29.5V
4.2A 3.5A
100.8W 100.8W
150 150
200 200
26.5 - 30.0V 29.7 - 34.7V
4.68A min. 3.8A min.
20 30
FAX (718) 767-1102
HSF 48-2-1UR
(1)
48V
44.0 - 52.0V
2A
100.8W
200
300
54.5 - 59.5V
2.2A min.
50
1