DC/DC CONVERTERS 10.8-15W High Efficiency DC/DC Converters 1
2 YEAR WARRANTY
CXE15 Series
Single output
•High efficiency topology, 87% typical at 5V
•Industry standard footprint
•Wide operating temperature, up to and exceeding 70˚C
(natural convection)
•90% to 110% output trim
•No minimum load
•Overvoltage protection
•Remote on/off control
The CXE15 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 to 75VDC and are available in output voltages of 5V, 3.3V, 2.5V and 1.8V.
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 5V, 86% for the 3.3V, 85% for
the 2.5V and 83% for the 1.8V version. 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 data sheet)
Level B
Immunity:
ESD air EN61000-4-2 8kV, 15kV
ESD contact EN61000-4-2 6kV, 8kV
Radiated field enclosure EN61000-4-3 10V/m
Conducted (DC power) EN61000-4-6 10V
Conducted (signal) EN61000-4-6 10V (See Note 8)
Input transients ETS 300 132-2, ETR 283
GENERAL SPECIFICATIONS
Efficiency See table
Operational insulation Input/output 1500VDC
Switching frequency Fixed 265kHz typ.
Approvals and UL/cUL1950, EN60950
standards TÜV Rheinland
(See Note 5)
Material flammability UL94V-0
Weight 12g (0.42oz)
MTBF MIL-HDBK-217F >600,000 hours
Representative model: 48S05 @ 48Vin, 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. (3.3V and 5V)
Operating ambient -40°C to +70°C
temp. (1.8V and 2.5V)
Non-operating -40°C to +120°C
(All models)
OUTPUT SPECIFICATIONS
Voltage adjustability 90% to 110%
Total error band (See Note 11) ±3.5% max.
Line regulation 1V8 and 2V5 models 0.5% max.
Low line to high line 3V3 and S05 models 0.1% max.
Load regulation 1V8 model 2.0% max.
Full load to min. load 2V5 model 1.5% max.
3V3 and S05 models 0.5% max.
Minimum load 0%
Overshoot 1V8 and 2V5 models 3.5% max.
3V3 and S05 models None
Undershoot None
Ripple and noise 1V8 and 2V5 models 40mV pk-pk
(See Note 1) 14mV rms
5Hz to 20MHz 3V3 and S05 models 70mV pk-p
20mV rms
Transient response 1V8 and 2V5 models 150mV
(See Note 2) 3V3 and S05 models 100mV
typ. deviation 400µs recovery to
within total error band
INPUT SPECIFICATIONS
Input voltage range 48Vin nominal 33 to 75VDC
Input current No load 35mA max.
Remote OFF 25mA max.
Input current (max.) (See Note 4) 0.55A max. @ Io max.
and Vin = 33 to 75V
Input reflected ripple (See Note 6) 5mA (pk-pk) typ.
Active high remote ON/OFF (See Note 10)
Logic compatibility Open collector ref to -input
ON Open circuit or >2VDC
OFF <1.2VDC
Undervoltage lockout Power up 33V (typ.)
Power down 30V (typ.)
Start-up time Power up 1.5ms (typ.)
(See Note 7) Remote ON/OFF 2.5ms (typ.)
SPECIFICATIONS
File Name: CXE15S.PDF Rev: 01 Oct 2002
TÜV