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 25C 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
5C/10 min.
shock
Temperature shock
Operating
10C/hour
Non-operating
20C/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 +60C
(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
50s
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/sec load transient no load to full load,
recovery within 50sec
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
For the most current data and application support visit www.artesyn.com/powergroup/products.htm
Notes
1
15mV pk-pk ripple with no external output filtering.
Vin = 12V, Vout = 1.6V, Iout = 60A.
2
125mV peak deviation when slewing load from no load to full load at
50A/sec. Oscon type low impedance caps required across output.
3
Each phase operates at a fixed 225kHz. Effective fundamental output
frequency is 900kHz / 4 phases each at 225kHz interleaved.
4
Recommended mating connector is AMP 1364125-1 or equivalent.
5
From 5Hz to 20Hz, maintaining 0.02G
2
/Hz from 20Hz to 500Hz, all axes.
6
Initilization level; ESD event shall cause no out-of-regulation conditions.
7
Requires 400LFM forced air over the converter. Ensure the thermal
reference point (see figure 2) is kept below 95C to maintain the reliability of
the converter.
NXI110 Series
Single output, 5 Bit Selectable (Non-isolated)
DC/DC CONVERTERS 110W Non-isolated DC/DC Converters
2
www.artesyn.com
TABLE 2 : VOLTAGE IDENTIFICATION (VID) CODES
VID4
VID3
VID2
VID1
VID0
VDAC
1
1
1
1
1
Off
1
1
1
1
0
1.100
1
1
1
0
1
1.125
1
1
1
0
0
1.150
1
1
0
1
1
1.175
1
1
0
1
0
1.200
1
1
0
0
1
1.225
1
1
0
0
0
1.250
1
0
1
1
1
1.275
1
0
1
1
0
1.300
1
0
1
0
1
1.325
1
0
1
0
0
1.350
1
0
0
1
1
1.375
1
0
0
1
0
1.400
1
0
0
0
1
1.425
1
0
0
0
0
1.450
0
1
1
1
1
1.475
0
1
1
1
0
1.500
0
1
1
0
1
1.525
0
1
1
0
0
1.550
0
1
0
1
1
1.575
0
1
0
1
0
1.600
0
1
0
0
1
1.625
0
1
0
0
0
1.650
0
0
1
1
1
1.675
0
0
1
1
0
1.700
0
0
1
0
1
1.725
0
0
1
0
0
1.750
0
0
0
1
1
1.775
0
0
0
1
0
1.800
0
0
0
0
1
1.825
0
0
0
0
0
1.850
INPUT
NOMINAL OUTPUT
NOMINAL OUTPUT
TYPICAL
MODEL
VOLTAGE
VOLTAGE
CURRENT
EFFICIENCY
NUMBER
12VDC
See Table 2
60A
84%
NXI110-12P1V8C
TABLE 1 : PIN CONNECTIONS
PIN NO. FUNCTION
PIN NO. FUNCTION
1
Vin+
32
Vo-
2
Vin+
33
Vo+
3
Vin+
34
Vo-
4
Vin+
35
Vo+
5
Reserved
36
Vo-
6
Key
37
Vo+
7
VID3
38
Vo-
8
VID1
39
Vo+
9
Reserved
40
Vo-
10
PWRGD
41
Vo+
11
Vo sen-
42
Vo-
12
Reserved
43
Vo+
13
Vo-
44
Vo-
14
Vo+
45
Vo+
15
Vo-
46
Vo-
16
Vo+
47
Vo+
17
Vo-
48
Vo-
18
Vo+
49
Vo+
19
Vo-
50
Vo+
20
Vo+
51
Reserved
21
Vo-
52
Vo sen+
22
Vo+
53
OUTEN
23
Vo-
54
Ishare
24
Vo+
55
VID0
25
Vo-
56
VID2
26
Vo+
57
VID4
27
Vo-
58
VRM-pres
28
Vo+
59
Vin-
29
Vo-
60
Vin-
30
Vo+
61
Vin-
31
Vo-
62
Vin-
File Name: NXI110.PDF Rev: 02 May 2002
3.800 (96.520)
3.600 (91.440)
3.186 (80.924)
3.000 (76.200)
0.093 (2.362)
0.307 (7.798)
1.122
(28.499)
REF
2.615
(66.421)
REF
2.300 (58.420)
0.300 (7.620)
0.310 (7.874)
11
32-62 1-31
6 No Contact
12
31
32
62
1
0.042
(1.067)
KEY
DIMENSIONS IN INCHES (MM)
0.425 (10.795)
0.425 (10.795)
0.425 (10.795)
KEEP OUT
AREA
0.610 (15.494)
0.250 (6.350) MAX
0.063 (1.600) THK FR-4 DBL-SIDED
CIRCUIT BOARD W/GOLD-PLATED
(30u") CONNECTOR FINGERS
0.563 (14.300) MAX
0.54 (13.72)
1.075 (27.305)
0.100 (2.540) TYP
COMP CLEAR
Figure 2:
Thermal Reference Point (TRP) -
Monitor Tab Indicated
Figure 1:
Mechanical Drawing
TRP
Data Sheet Artesyn Technologies 2002
The information and specifications contained in this data sheet are believed to be correct at time of publication. However, Artesyn Technologies accepts no responsibility for consequences arising
from printing errors or inaccuracies. Specifications are subject to change without notice. No rights under any patent accompany the sale of any such product(s) or information contained herein.
www.artesyn.com
For the most current data and application support visit www.artesyn.com/powergroup/products.htm
NXI110 Series
Single output, 5 Bit Selectable (Non-isolated)
DC/DC CONVERTERS 110W Non-isolated DC/DC Converters
3
Mechanical Notes
1
All dimensions in INCHES (mm).
File Name: NXI110.PDF Rev: 02 May 2002
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