KX750 4/99 REV B
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DESCRIPTION
The KX750 is a low profile, 750 watt, power factor corrected,
triple output power supply utilizing a half-bridge topology
operating at 250kHz. The compact design yields a power density
in excess of 6 watts per cubic inch. Universal input and power
factor correction to EN61000-3-2 make the KX750 an excellent
choice for product applications with woldwide markets. In
addition, the KX750 carries UL, CSA and TUV approvals, and
complies with FCC and VDE Class B EMI requirements.
Optional active current sharing on all three outputs simplifies
N+1 redundant applicaitons. Remote sensing capability is
standard on all outputs and will compensate for up to 0.7V line
drop. All outputs are fully isolated, regulated, and current limited
FEATURES
Active Power Factor Correction to EN61000-3-2
3.3V Main Output
FCC/VDE Class B EMI Filter
Active Current Sharing Optional
Fully Isolated and Regulated Outputs
Compact Size: 12" x 5" x 2"
75% Efficiency Typical
> 6 Watts Per Cubic Inch
Optional Fan Mounted On Cover
Optional Current Sharing On All Outputs
Internet: http://www.cdpowerelectronics.com
Power Electronics Division, United States
3400 E Britannia Drive, Tucson, Arizona 85706
Phone: 800.547.2537 Fax: 520.770.9369
Power Electronics Division, Europe
C&D Technologies (Power Electronics) Ltd.
132 Shannon Industrial Estate, Shannon, Co. Clare, Ireland
Tel: +353.61.474.133 Fax:+353.61.474.141
AGENCY APPROVALS
750 W
ATT
AC/DC P
OWER
S
UPPLY
Product Data Sheet
KX750
KX750 4/99 REV B
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Remote Sense
Remote Sense is provided on all outputs and will
compensate for 0.7V of line drop. Remote Sense leads
are protected against open, short, and reversal.
Remote On/Off
The power supply is turned on with a TTL logic `1' (or open)
signal and turned off by a switch closure or TTL logic `0'
referenced to (-) sense terminal. Consult the factory for
other options.
Over Voltage Protection
Output #1: 6.25V, 0.8 V
DC
.
The power supply will latch off until AC power is cycled.
Over Current Protection
Individual current limit on all outputs. Automatic recovery
upon fault removal.
Reverse Voltage Protection
All outputs are protected to rated load.
Transient Response
The peak output voltage excursion on the main output will
not exceed 2% and will recover within 1% in 200
Sec for a
25% load step change.
Output Isolation
All outputs are fully isolated.
Power Fail Signal
Upon AC input voltage removal, the power fail signal drops
to logic zero at least 5msec before loss of DC output. Upon
AC input turn-on, signal remains low until outputs are in
regulation referenced to (-) sense terminal. Consult the
factory for other options.
DC Power Good Signal
Upon a 10% loss of regulation on any output, the DC
Good signal drops to a logic zero referenced to (-) sense
terminal. Consult the factory for other options.
Over Temperature Protection
Internal thermal switch turns off power supply if overheating
occurs and automatically restarts when temperature drops
below threshold.
Safety
UL Recognized: UL File Number 14675 (1950 & 1012)
CSA Certified: CSA File Number LR9070-154C
(C22.2 No. 234-M90, Level 6)
TUV License Number:R9576032 (EN60950) (IEC950)
Cooling
The unit is designed to operate with 30 CFM of airflow.
Input Specifications
Parameter
Conditions
Min
Typ
Max
Units
Operating Range
47-63Hz
90
264
V
AC
Inrush Current
120V
AC,
cold start
40
A
PK
240V
AC,
cold start
80
A
PK
Efficiency
Nominal line and full load
75
%
Power Factor Correction (PFC)
Meets EN61000-3-2
0.99
KX750 4/99 REV B
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Output Specifications
Parameter
Limits
Regulation
Main Output Outputs #2 - 3
Line
+ 0.1% + 0.2%
Load
+ 0.2% + 0.4%
Cross
+ 0.2% + 0.2%
Minimum Load
Output #1
5.0A
Outputs #2 & #3
1.0A
Hold-Up Time
>20mSec at Full Load
OUTPUT #1
OUTPUT #2
OUTPUT #3
MODEL NUMBER
V
OUT
I
MAX
V
NOM
I
MAX
V
NOM
I
MAX
KX750-F3A
5V
100A
12V
20A
12V
20A
KX750-F2B
5V
100A
12V
20A
KX750-F1C
5V
100A
NOTE: Total power not to exceed 750 watts.
Output Voltages and Maximum Rated Loads
Parameter
Conditions
Min
Typ
Max
Units
Voltage Adustment Range
Nominal line on all outputs
5
%
PARD
20 MHz bandwidth
1
% P-P
Temperature
Operating
0
50
C
Derates 20W/C
50
70
C
Storage
-20
+85
C
Humidity Range
Non-condensing
0
95
%
Temperature Coefficient (T
C
)
All outputs after half hour warm-up
0.02
%/C
KX750 4/99 REV B
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Standard Options are shown, consult factory for other available options.
The information provided herein is believed to be reliable; however, C&D TECHNOLOGIES assumes no responsibility for inaccuracies or omissions. C&D TECHNOLOGIES assumes no responsibility
for the use of this information, and all use of such information shall be entirely at the user's own risk. Prices and specifications are subject to change without notice. No patent rights or licenses to any
of the circuits described herein are implied or granted to any third party. C&D TECHNOLOGIES does not authorize or warrant any C&D TECHNOLOGIES product for use in life support devices/systems
or in aircraft control applications.
Terminal Block 1
Terminal Block 2
POS
FUNCTION
POS
FUNCTION
1
AC Line
1
-V2
2
AC Neutral
2
+V2
3
Ground
3
-V3
4
+V3
J9 Connector
Molex No. 22-08--1140
PIN
FUNCTION
1
- Remote Sense #2
2
+ Remote Sense #2
3
Current Sense Bus #2
4
- Remote Sense #3
5
+ Remote Sense #3
6
Curent Sense Bus #3
7
+ Remote Sense #1
8
- Remote Sense #1
9
Sync I/O
10
AC Power Fail Alarm
11
Status/Control Return
12
DC Power Good
13
Remote Inhibit
14
Current Sense Bus #1
Pin Specifications
Connector Specifications
NOTES:
All measurements are in inches
FAN MOUNTED ON COVER ADDS 1.70".
COOLING: The KX750 is designed to operate with 30 CFM airflow in 50C ambient termperature.
SHOCK AND VIBRATION: The KX750 meets the requirements of MIL-STD-810D. (Vibration-Method 514.3 Procedure I; Shock-Method 516.3 Procedure I).
WEIGHT: Approximately 6 lbs.
Side Vie
w
Bottom View
Side
Vie
w
Top View
Mechanical
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