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

1

2 YEAR WARRANTY

CXE15 Series

Single output

(natural convection)

The CXE15 is a new high efficiency open frame isolated 15 Watt converter series

in an industry standard footprint. The CXE15 features an input voltage range of 33

Vdc to 75 Vdc and are available in output voltages of 5 V and 3.3 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 and 86% for the 3.3 V. The

CXE15 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 CXE15

reduces compliance costs and time to market.

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

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 8)

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

UL/cUL1950, EN60950

standards

TÜV Rheinland

(See Note 5)

Material flammability

UL94V-0

Weight

12 g (0.42 oz)

MTBF

MIL-HDBK-217F

3,628,000 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)

temperature

Non-operating

-40 °C to +120 °C

SPECIFICATIONS

File Name: cxe15s.pdf Rev: 01 Mar 2006

TÜV

OUTPUT SPECIFICATIONS

Voltage adjustability

90% to 110%

Total error band

(See Note 11)

±3.5% max.

Line regulation

Low line to high line

0.1% max.

Load regulation

Full load to min. load

0.5% max.

Minimum load

0%

Overshoot

None

Undershoot

None

Ripple and noise

5 Hz to 20 MHz

70 mV pk-pk

(See Note 1)

20 mV rms

Transient response

(See Note 2)

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 10)

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.)