NXI150 Series
S i n g l e o u t p u t
DC-DC CONVERTERS 81 A DC-DC Non-Isolated Converters
1
NEW Product
• Meets VRM9.1 specification
• Microprocessor voltage identification input
- 5 Bit VID input
- 1.10 Vdc to 1.85 Vdc in 25 mV steps
• Up to 50 A/µs load transient
• Democratic current sharing, no need for
master/slave configuration
• Remote sense for improved load regulation
• Vertical plug-in to standard motherboard connector with
or without retention latch
• Available RoHS compliant
The NXI150 non-isolated dc-dc converter is 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. On-board active current
sharing circuit guarantees the current sharing specification is met during static and
dynamic load conditions.
2 YEAR WARRANTY
All specifications are typical at nominal input, full load at 25 °C unless otherwise stated
SPECIFICATIONS
OUTPUT SPECIFICATIONS
Voltage adjustability
GENERAL CHARACTERISTICS
1.10-1.85 Vdc
0.8ꢀ
Efficiency
1.5 V output @ 65 A
Fixed (See Note 4)
85ꢀ
Output setpoint accuracy Vout
Switching frequency
Standards
1 MHz
Ripple and noise
(See Notes 1 and 2)
20 MHz bandwidth
15 mV pk-pk
94V-0 Flammability rating
70 g (2.46 oz)
Weight
Transient response
peak dev. settling time
See Note 3
50 mV
25 µs
MTBF
Telcordia SR-332
1,800,000 hours
(See Note 5)
Mating connector
Short-circuit protection
Continuous current limit,
foldback automatic
recovery
ENVIRONMENTAL SPECIFICATIONS
INPUT SPECIFICATIONS
Input voltage range
Input current
Maximum temperature
shock
Operating
5 ºC/10 min.
12 Vin nominal
11.0-12.6 Vdc
Operation
No load
Remote OFF
16.2 A max.
250 mA
45 mA max.
Temperature shock
Operating
Non-operating
10 ºC/hour
20 ºC/hour
Humidity
(Non-condensing)
Operating
Storage
85ꢀ RH
95ꢀ RH
UVLO turn ON voltage
UVLO turn OFF Voltage
10.45 V typ.
8.55 V typ.
Altitude
Operating
Storage
10,000 feet max.
50,000 feet max.
Start-up time
Nominal line
Open circuit
10 ms max.
OUTEN
Shock
Operational and
non-operational
50 G 11 ms,
half sine wave
Logic compatibility
Ref. to -input
>1.8 Vdc
ON
OFF
<0.8 Vdc
Vibration
(See Note 6)
Operational and
non-operational
0.02 G2/Hz max.
Electrostatic discharge
Operating
ESD 15 kV
ESD 25 kV
IEC61000-4-2 (See Note 7) non-operating
Thermal performance
(See Note 8)
Operating ambient
temperature
non-operating
0 ºC to +60 ºC
-40 ºC to +100 ºC
Filename: NXI150.PDF Rev (03): 20 Dec 2005