EXB50-48D3V3-1V8J Datasheet, PDF (1/2 Pages) Artesyn Technologies – 50 W High Efficiency DC-DC Converters

EXB50 Dual Series
Dual positive output
DC-DC CONVERTERS 50 W High Efficiency DC-DC Converters
• Two independently regulated positive outputs
• Each output offers ultra-wide output voltage
trim range
• High efficiency topology, 89% typical
• Approved to IEC60950, UL/cUL1950
• Operating ambient temperature of -40 °C to +70 °C
(natural convection)
• No minimum load on either output
• Complies with ETS 300 019-1-3/2-3 and ETS 300 386-1
• Available RoHS compliant
The EXB50 Dual is a 50W independently regulated dual output dc-dc converter specifically
designed to meet the power needs of low voltage silicon. Housed in an open-frame package
with an industry standard ¹/₂ brick footprint, the EXB50 Dual can deliver up to 8.5 A from either
output, and up to 11 A in total, at temperatures of up to 70 ºC under natural convection. With
some forced air and/or reduced ambient temperatures, the EXB50 can deliver up to 8.5 A from
either output, and up to 17 A in total. The converter is primarily intended for the networking,
telecoms and wireless markets, where small size, lower output voltages with higher currents,
low profile and high efficiency are all key demands. Product features include wide output trim
and remote on/off. Overvoltage, short circuit and overtemperature protection combines to make
the EXB50 Dual a very robust and flexible product.
All specifications are typical at Vin = 48 V, Io1 = 5 A, Io2 = 5 A, Tamb = 25 °C unless otherwise stated
1
2 YEAR WARRANTY
SPECIFICATIONS
OUTPUT SPECIFICATIONS
Voltage adjustability
EXB50-48D3V3-1V8J
EXB50-48D05-3V3J
0.8-3.6 Vdc
1.5-5.25 Vdc
Voltage accuracy
Both outputs
±0.5% max.
Line regulation
Low line to high line
Low line to high line
Vout1 ±0.5%
Vout2 ±0.5%
Load regulation
Full load to no load
±0.5%
Minimum load
Both outputs
0%
Ripple and noise
20 MHz bandwidth
Both outputs
150 mV pk-pk max.
30 mV rms max.
Transient response
3 A to 5 A (1 A/10 µs)
peak dev. settling time and back
150 mV
400 µs
Short circuit protection EXB50-48D3V3-1V8J
EXB50-48D05-3V3J
17 A rms
15 A rms
INPUT SPECIFICATIONS
Input voltage range
48 Vin nominal
36-75 Vdc
Input current
No load
Remote OFF
100 mA max.
4 mA max.
UVLO turn ON voltage All inputs
UVLO turn OFF voltage All inputs
34 V typ.
33 V typ.
Active high remote ON/OFF
Logic compatibility
ON
OFF (See Note 7)
Open collector ref. to -input
Open circuit voltage or >3.2 Vdc
<0.4 Vdc
Active low remote ON/OFF
Logic compatibility
ON
OFF (See Note 7)
Open collector ref. to -input
0.4 Vdc max.
Open circuit voltage or >3.2 Vdc
International Safety Standard Approvals
UL/cUL CAN/CSA 22.2 No. E174104
UL 60950 File No. E174104
TÜV Product Service (EN60950) Certificate No. B 01 09 38572 024
CB report and certificate to IEC60950
EMC CHARACTERISTICS
ETS 300 386-1 table 5
Conducted emissions
(See Note 3)
Radiated emissions
Immunity:
ESD air
ESD contact
EFT dc power
EFT signal
Radiated field enclosure
Surges indoor signal
Conducted (dc power)
Conducted (signal)
Input transients
EN55022 with external filter
EN55022 with external filter
EN55022
Level A
Level B
Level A
EN61000-4-2 8 kV (NP), 15 kV (RP)
EN61000-4-2 6 kV (NP), 8 kV (RP)
EN61000-4-4 2 kV (NP), 4 kV (LFS)
EN61000-4-4 1 kV (NP), 2 kV (LFS)
EN61000-4-3 10 V/m (NP)
EN61000-4-5 500 V (RP)
EN61000-4-6 10 V (NP)
EN61000-4-6 10 V (NP)
ETS 300 132-2, ETR 283
GENERAL SPECIFICATIONS
Efficiency
89% typ.
Basic insulation
Input/output
1500 Vdc
Input fuse 48 V
(See Note 2)
4 A slow blow HRC
Switching frequency
(fixed)
EXB50-48D3V3-1V8J
EXB50-48D05-3V3J
250 kHz
300 kHz
Approvals and
standards
IEC60950
UL/cUL1950
Material Flammability
UL94V-0
Weight
42 g (1.48 oz)
MTBF
MIL-HDBK-217
177,362 hours
ENVIRONMENTAL SPECIFICATIONS
Thermal performance
(See Notes 4 and 5)
Operating ambient -40 °C to +100 °C,
temperature
see curves
Non-operating
-40 °C to +120 °C
ETS 300 019-2-3
Classes T3.1 to T3.5
Air temperature
Low: IEC 68-2-1
-40 °C
High: IEC 68-2-2
+70 °C
Change: IEC 68-2-14 -40 °C to +70 °C
Relative humidity
IEC 68-2-56
IEC 68-2-30
10% to 100% RH
condensation
File Name: exb50d.pdf Rev (02): 30 Nov 2005