NXA66 Datasheet, PDF (1/2 Pages) Artesyn Technologies – 66W Non-isolated DC/DC Converters

NXA66 Series
Single output (Non-Isolated)
DC/DC CONVERTERS 66W Non-isolated DC/DC Converters
• Transient response from 0A to rated full load
(up to 30A/µs), recovery within 250µs
• Democratic current sharing, no need for master/slave
configuration
• Programmable output voltage
• Remote enable pin
• Power good signal
• True double ended differential remote sense
The NXA66 non-isolated DC/DC converter is targeted at computing applications that
require point of load power conversion. The NXA66 is designed to meet the precise
voltage and fast transient requirements of today’s high performance applications such
as workstations, file servers, desktop computers, telecommunications equipment,
adapter cards, DSP and data processing. Employing synchronous rectification and
democratic current sharing, the NXA66 can be used in a stand-alone configuration, or
paralleled as a building block to achieve higher output currents or redundancy. The
current sharing specifications are met during static conditions, and transient conditions.
The advanced democratic current sharing technique employed by the NXA66 removes
the need for cumbersome master/slave combinations. The NXA66 uses gold plated
edge tab fingers for a convenient, low impedance interconnect scheme. This also
allows system designers to easily accommodate future expansion in their systems.
All specifications are typical at nominal input, full load at 25°C unless otherwise stated
1
2 YEAR WARRANTY
SPECIFICATIONS
OUTPUT SPECIFICATIONS
Voltage adjustability
Vout programmable
to 2V5 or 3V3
Total error band
3V3 output
2V5 output
4.5%
4.5%
Ripple and noise
(20MHz bandwidth) 150mV pk-pk max.
Transient response
50% to 75% and back
peak dev. settling time to 1.0%, no external cap.
150mV
400µs
Short circuit protection
Isc = 25A rms
Continuous
automatic recovery
INPUT SPECIFICATIONS
Input voltage range
12Vin nominal
10.8 to 13.2VDC
Input current
No load
Remote OFF
100mA typ.
10mA max.
UVLO turn ON voltage
UVLO turn OFF voltage
10.4V max.
8.2V min.
Start-up time
Nominal line
15ms
Active high remote ON/OFF
Logic compatibility
ON
Open circuit voltage
OFF
Ref. to -input
10.8VDC min.
0.8VDC max.
GENERAL SPECIFICATIONS
Efficiency
3V3 output
2V5 output
Switching frequency
Fixed
Approvals and
standards
Weight
MTBF
Bellcore 332
86%
82%
300kHz
EN60950
Bi-national UL1950
CSA C22.2 No. 234/950
42.6g (1.5 oz)
3,500,000 hours
ENVIRONMENTAL SPECIFICATIONS
Maximum temperature Operating
shock
Temperature shock
Operating
Non-operating
Humidity
Operating
Storage
Altitude
Operating
Storage
Shock
Operational and
non-operational
5˚C/10 min.
10˚C/hour
20˚C/hour
85% RH
95% RH
10,000 feet max.
50,000 feet max.
50G 11ms
half sine wave
Vibration
(See Note 3)
Electrostatic discharge
Operational and
non-operational
0.02G²/Hz max.
Operating (See Note 4)
non-operating
ESD 15kV
ESD 25kV
File Name: NXA66.PDF Rev: 31 July 2001