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Product Data Sheet
750 WATT
AC/DC POWER SUPPLY
KX750
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
KX750 4/99 REV B Page 1
132 Shannon Industrial Estate, Shannon, Co. Clare, Ireland
AGENCY APPROVALS
Power Electronics Division, Europe
C&D Technologies (Power Electronics) Ltd.
Tel: +353.61.474.133 Fax:+353.61.474.141
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Input Specifications
Parameter Conditions Min Typ Max Units
Operating Range 47-63Hz 90 264 VAC
Inrush Current 120VAC, cold start 40 APK
240VAC, cold start 80 APK
Efficiency Nominal line and full load 75 %
Power Factor Correction (PFC) Meets EN61000-3-2 0.99
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 µSec for a
25% load step change.
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.
Output Isolation
All outputs are fully isolated.
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Output Voltages and Maximum Rated Loads
OUTPUT #1 OUTPUT #2 OUTPUT #3
MODEL NUMBER V
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.
OUT IMAX VNOM IMAX VNOM IMAX
Output Specifications
Parameter Limits
Regulation Main Output Outputs #2 - 3
Line
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
+0.1% +0.2%
Parameter Conditions Min Typ Max Units
Voltage Adustment Range Nominal line on all outputs ±5 %
PARD 20 MHz bandwidth 1 % P-P
Temperature
Operating 050°C
Derates 20W/°C 50 70 °C
Storage -20 +85 °C
Humidity Range Non-condensing 0 95 %
Temperature Coefficient (TC) All outputs after half hour warm-up ± 0.02 %/°C
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Mechanical
Top View
Side View
Bottom View
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 50°C 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 View
Pin Specifications
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
Standard Options are shown, consult factory for other available options.
Connector Specifications
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
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.
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