DC-DC CONVERTERS 10.8-15 W High Efficiency DC-DC Converters

1

2 YEAR WARRANTY

SXN15 Series

Single output

(natural convection)

The SXN15 is a new high efficiency open frame isolated 15 Watt converter

series in an industry standard footprint. The first four models in the series

feature an input voltage range of 33 Vdc to 75 Vdc and are available in output

voltages of 5 V, 3.3 V, 2.5 V and 1.8 V. The output voltage on each model is

adjustable from 90% to 110% of the nominal value. Typical efficiencies for the

models are 87% for the 5 V, 86% for the 3.3 V, 85% for the 2.5 V and 83% for

the 1.8 V version. The SXN15 series also has a remote ON/OFF capability with

active high or active low logic. Overcurrent and overvoltage protection features

are included as standard. With full international safety approval including

EN60950 and cUL1950, the SXN15 reduces compliance costs and time to

market.

All specifications are typical at nominal input, full load at 25 °C unless otherwise stated

OUTPUT SPECIFICATIONS

Voltage adjustability

90% to 110%

Total error band

(See Note 11)

±3.5% max.

Line regulation

1.8 V and 2.5 V models

0.5% max.

Low line to high line

3.3 V and 5 V models

0.1% max.

Load regulation

1.8 V model

2.0% max.

Full load to min. load

2.5 V model

1.5% max.

3.3 V and 5 V models

0.5% max.

Minimum load

0%

Overshoot

1.8 V and 2.5 V models

3.5% max.

At turn-on and turn-off

3.3 V and 5 V models

None

Undershoot

None

Ripple and noise

1.8 V and 2.5 V models

40 mV pk-pk

(See Note 1)

14 mV rms

5 Hz to 20 MHz

3.3 V and 5 V models

70 mV pk-p

20 mV rms

Transient response

1.8 V and 2.5 V models

150 mV

(See Note 2)

3.3 V and 5 V models

100 mV

typ. deviation

400 µs recovery to

within total error band

INPUT SPECIFICATIONS

Input voltage range

48 Vin nominal

33-75 Vdc

Input current

No load

35 mA max.

Remote OFF

25 mA max.

Input current (max.)

(See Note 4)

0.55 A max. @ Io max.

and Vin = 33-75 Vdc

Input reflected ripple

(See Note 6)

5 mA (pk-pk) typ.

Active high remote ON/OFF

(See Note 8)

Logic compatibility

Open collector ref to -input

ON

Open circuit or >2 Vdc

OFF

<1.2 Vdc

Undervoltage lockout

Power up

33 V (typ.)

Power down

30 V (typ.)

Start-up time

Power up

1.5 ms (typ.)

(See Note 7)

Remote ON/OFF

2.5 ms (typ.)

SPECIFICATIONS

File Name: sxn15s.pdf Rev (01): 08 Dec 2005

EMC CHARACTERISTICS

Conducted emissions

EN55022 (See Note 3)

Level A

EN55022 (See Note 3)

Level B

Radiated emissions

EN55022 (See Longform Datasheet) Level B

Immunity:

ESD air

EN61000-4-2

8 kV, 15 kV

ESD contact

EN61000-4-2

6 kV, 8 kV

Radiated field enclosure EN61000-4-3

10 V/m

Conducted (dc power)

EN61000-4-6

10 V

Conducted (signal)

EN61000-4-6

10 V

(See Note 10)

Input transients

ETS 300 132-2, ETR 283

GENERAL SPECIFICATIONS

Efficiency

See table

Operational insulation

Input/output

1500 Vdc

Switching frequency

Fixed

265 kHz typ.

Approvals and

(See Note 5)

UL/cUL1950, EN60950

standards

TÜV Rheinland

Material flammability

UL94V-0

Weight

12 g (0.42 oz)

Coplanarity

150 µm

MTBF

MIL-HDBK-217F

1,790,000 hours

Representative model:

48S05J @ 48 Vin, 40 °C,

100% load ground benign

BELLCORE 332

>1,500,000 hours

ENVIRONMENTAL SPECIFICATIONS

Thermal performance

Operating ambient

-40 °C to +65 °C

(See Note 9)

temp. (3.3 V and 5 V)

Operating ambient

-40 °C to +70 °C

temp. (1.8 V and 2.5 V)

Non-operating

-40 °C to +120 °C

(All models)

TÜV