DC-DC CONVERTERS

81 A DC-DC Non-Isolated Converters

1

NXI150 Series

Single output

NEW Product

Filename: NXI150.PDF Rev (03): 20 Dec 2005

- 5 Bit VID input

- 1.10 Vdc to 1.85 Vdc in 25 mV steps

master/slave configuration

or without retention latch

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

1.10-1.85 Vdc

Output setpoint accuracy Vout

±0.8%

Ripple and noise

20 MHz bandwidth

15 mV pk-pk

(See Notes 1 and 2)

Transient response

See Note 3

50 mV

peak dev. settling time

25 µs

Short-circuit protection

Continuous current limit,

foldback automatic

recovery

INPUT SPECIFICATIONS

Input voltage range

12 Vin nominal

11.0-12.6 Vdc

Input current

Operation

16.2 A max.

No load

250 mA

Remote OFF

45 mA max.

UVLO turn ON voltage

10.45 V typ.

UVLO turn OFF Voltage

8.55 V typ.

Start-up time

Nominal line

10 ms max.

OUTEN

Logic compatibility

Ref. to -input

ON

Open circuit

>1.8 Vdc

OFF

<0.8 Vdc

GENERAL CHARACTERISTICS

Efficiency

1.5 V output @ 65 A

85%

Switching frequency

Fixed (See Note 4)

1 MHz

Standards

94V-0 Flammability rating

Weight

70 g (2.46 oz)

MTBF

Telcordia SR-332

1,800,000 hours

Mating connector

(See Note 5)

ENVIRONMENTAL SPECIFICATIONS

Maximum temperature

Operating

5 ºC/10 min.

shock

Temperature shock

Operating

10 ºC/hour

Non-operating

20 ºC/hour

Humidity

Operating

85% RH

(Non-condensing)

Storage

95% RH

Altitude

Operating

10,000 feet max.

Storage

50,000 feet max.

Shock

Operational and

50 G 11 ms,

non-operational

half sine wave

Vibration

Operational and

(See Note 6)

non-operational

Electrostatic discharge

Operating

ESD 15 kV

IEC61000-4-2 (See Note 7) non-operating

ESD 25 kV

Thermal performance

Operating ambient

0 ºC to +60 ºC

(See Note 8)

temperature

non-operating

-40 ºC to +100 ºC