DC/DC CONVERTERS 110W Non-isolated DC/DC Converters 1
2 YEAR WARRANTY
NXI110 Series
Single output, 5 Bit Selectable (Non-Isolated)
All specifications are typical at nominal input, full load at 25°C unless otherwise stated
GENERAL SPECIFICATIONS
Efficiency 1V7, 1V85 output @ 60A 84%
1V10 output @ 60A 76%
Switching frequency Fixed (See Note 3) 900kHz
Standards 94V-0 Flammability rating
Weight 75g (2.64 oz)
MTBF Bellcore TR-332 2,000,000 hours
Mating connector (See Note 4)
ENVIRONMENTAL SPECIFICATIONS
Maximum temperature Operating 5˚C/10 min.
shock
Temperature shock Operating 10˚C/hour
Non-operating 20˚C/hour
Humidity Operating 85% RH
Storage 95% RH
Altitude Operating 10,000 feet max.
Storage 50,000 feet max.
Shock Operational and 50G 11ms
non-operational half sine wave
Vibration Operational and 0.02G
2
/Hz max.
(See Note 5) non-operational
Electrostatic discharge Operating (See Note 6) ESD 15kV
Non-operating ESD 25kV
Thermal performance Operating ambient 0 to +60ºC
(See Note 7) temperature
OUTPUT SPECIFICATIONS
Voltage adjustability See table
Set point accuracy Vout ±0.8%
Ripple and noise 20MHz bandwidth 15mV pk-pk
(See Note 1)
Transient response (See Note 2) 125mV
peak dev. settling time 50µs
Short circuit protection Continuous
automatic recovery
INPUT SPECIFICATIONS
Input voltage range 12Vin nominal 11.0 to 13.2VDC
Input current No load 300mA
Remote OFF 40mA max.
UVLO turn ON voltage 10.8V typ.
UVLO turn OFF voltage 9.5V typ.
Start-up time Nominal line 10ms
Active high remote ON/OFF
Logic compatibility Ref. to -input
ON Open circuit voltage 5.0VDC
OFF 0.8VDC max.
SPECIFICATIONS
• Meets VRM9.0 specification
• High efficiency: 84% typical @ Vin = 12V, Vout = 1.7V, Iout = 60A
• Multi-phase power conversion
• Microprocessor voltage identification input
- 5 Bit VID input
- 1.10V to 1.85V in 25mV steps
• Remote enable pin
• Power good signal
• True double ended differential remote sense
• Democratic current sharing, no need for
master/slave configuration
• Up to 50A/µsec load transient no load to full load,
recovery within 50µsec
• Overcurrent and short circuit protection
• Overvoltage protection with on board fuse
• Vertical plug-in to standard motherboard connector
• No minimum load requirement
The NXI110 non-isolated DC/DC converters are designed to meet the exceptionally fast transient response
requirements of today’s microprocessors and fast switching logic in a compact size at a very affordable price.
Advanced Circuit techniques, component selection and placement optimization, state-of-the-art thermal packaging,
and Surface Mount Technologies provide a high power density, highly reliable, and very precise voltage regulation
system for advanced microprocessors. Multi-phase power conversion techniques allow the NXI converters to lead
the industry with regard to conversion efficiency without adding unneccesary complexity. VRM9.0 specification
compliant without the need for expensive external components. On board active current sharing circuit guarantees
the current sharing specification is met both during both static and dynamic load conditions.
File Name: NXI110.PDF Rev: 02 May 2002
