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| 型号： | EXB50-48S12 |
| 元件分类： | 电源模块 |
| 英文描述： | 1-OUTPUT 50 W DC-DC REG PWR SUPPLY MODULE |
| 文件页数： | 1/3页 |
| 文件大小： | 108K |
| 代理商： | EXB50-48S12 |
DC/DC CONVERTERS
20-50W High Efficiency DC/DC Converters
1
2 YEAR WARRANTY
EXB50 Series
Single output
High efficiency topology, 91% typical on EXB50-48S05
Industry standard footprint
Wide operating temperature -40°C to +70°C
(natural convection)
60% to 110% output trim
No minimum load
Overvoltage and overtemperature protection
Remote sense compensation
Remote ON/OFF
The EXB50 series of 50 Watt single-output isolated DC/DC converters are specifically
designed to meet the power needs of low-voltage silicon. Housed in an open-frame
package with an industry-standard footprint, these latest-generation converters offer
efficiencies as high as 91%. The series comprises three 24V input models with 5V,
3.3V and 2V outputs, and six 48V input models with 12V, 5V, 3.3V 2.5V, 2.0V and 1.8V
outputs. All models feature a wide input range, trimmable output voltage and a 10A
current rating (except the 12V). Remote sense and remote ON/OFF facilities are
included as standard, and the converters are comprehensively protected against over-
current, over-voltage and over-temperature conditions.
NEW Product
All specifications are typical at nominal input, full load at 25°C unless otherwise stated
SPECIFICATIONS
OUTPUT SPECIFICATIONS
Voltage adjustability
60% to 110%
Setpoint accuracy
±1.5% max.
Line regulation
Low line to high line
0.1% max.
Load regulation
Full load to min. load
0.2% max.
Total error band
±3.0%
Minimum load
0%
Overshoot
At turn-on and turn-off
None
Undershoot
None
Ripple and noise
5Hz to 20MHz
100mV pk-pk
(See Note 1)
20mV rms
Transient response
24V models
3.0% peak deviation
(See Notes 2 and 8)
48V models
2.0% peak deviation,
200s recovery to
within total error band
Remote sense
(See Note 9)
10% o/p voltage change
INPUT SPECIFICATIONS
Input voltage range
24V nominal
18 to 36VDC
48V nominal
36 to 75VDC
(See Note 14)
100V 100ms transient
Input current
24V no load
85mA max.
24V Remote OFF
20mA max.
48V no load
60mA max.
48V Remote OFF
10mA max.
Input current (max.)
24V models
3.25A max. @ Io max.
(See Note 4)
and Vin = 18 to 36V
48V models
1.7A max. @ lo max.
and Vin = 36 to 75V
Input reflected ripple
24V models
20mA (pk-pk) typ.
(See Note 6)
48V models
50mA (pk-pk) typ.
Remote ON/OFF
(See Note 15)
Logic compatibility
Open collector ref to -input
ON
Open circuit or >2VDC
OFF
<1.2VDC
File Name: EXB50S.PDF Rev: 4 March 2004
INPUT SPECIFICATIONS Continued
Undervoltage lockout
24V Power up
17V max.
24V Power down
15V min.
48V Power up
33.2V max.
48V Power down
30.9V min.
Start-up time
Power up
30ms
(See Note 7)
Remote ON/OFF
25ms
EMC CHARACTERISTICS
Conducted emissions
EN55022 (See Note 3)
Level A
EN55022 (See Note 3)
Level B
Radiated emissions
EN55022
Level A
Immunity:
(See Note 13)
ESD air
EN61000-4-2 8kV (NP), 15kV (RP)
ESD contact
EN61000-4-2 6kV (NP), 8kV (RP)
Radiated field enclosure
EN61000-4-3 10V/m (NP)
Conducted (DC power)
EN61000-4-6 10V (NP)
Conducted (signal)
EN61000-4-6 10V (NP)
GENERAL SPECIFICATIONS
Efficiency
See table
Basic insulation
Input/output
1500VDC
Switching frequency
Fixed
300kHz typ.
Approvals and
IEC60950/EN60950, UL/cUL1950
standards (See Note 5)
CSA C22.2 No. 950
Material flammability
UL94V-0
Weight
50g (1.77oz)
MTBF
MIL-HDBK-217F @ 25C
270,000
100% load ground benign
hours
ENVIRONMENTAL SPECIFICATIONS
Thermal performance
Operating ambient.
-40°C to +70°C
(See Notes 11, 12
temperature (natural convection)
Non-operating
-55°C to +125°C
ETS 300 019-2-3
Classes T3.1 to T3.5
Altitude
3,000 ,metres
Derate max. output
(See Note 10)
current by 20%
10,000m
Derate max. output
current by 50%
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