Datasheet

ULS 100-Watt Series
Sixteenth-brick DOSA-Compatible,
Isolated DC-DC Converters
MDC_ULS-100 Series.A09 Page 9 of 28
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FUNCTIONAL SPECIFICATIONS, ULS-5/20-D48
ABSOLUTE MAXIMUM RATINGS
ABSOLUTE MAXIMUM RATINGS
Conditions
Conditions
➀
➀
Minimum
Minimum
Typical/Nominal
Typical/Nominal
Maximum
Maximum
Units
Units
Input Voltage, Continuous
0 80 Vdc
Input Voltage, Transient
100 mS max. duration 100 Vdc
Isolation Voltage
Input to output, continuous 2250 Vdc
Input Reverse Polarity
None, install external fuse None Vdc
On/Off Remote Control
Power on, referred to -Vin 0 15 Vdc
Output Power
0 101 W
Output Current
Current-limited, no damage, short-circuit
protected
020A
Storage Temperature Range
Vin = Zero (no power) -55 125 °C
Absolute maximums are stress ratings. Exposure of devices to greater than any of these conditions may adversely affect long-term reliability. Proper operation under conditions other
than those listed in the Performance/Functional Specifi cations Table is not implied or recommended.
INPUT
INPUT
Operating voltage range
36 48 75 Vdc
Recommended External Fuse
Fast blow 10 A
Start-up threshold
Rising input voltage 32.5 34.5 35.5 Vdc
Undervoltage shutdown
Falling input voltage 31 32.5 34 Vdc
Overvoltage shutdown
None Vdc
Reverse Polarity Protection
None, install external fuse None Vdc
Internal Filter Type
C
Input current
Full Load Conditions
Vin = nominal 2.29 2.36 A
Low Line
Vin = minimum 3.05 3.15 A
Inrush Transient
0.05 A
2
-Sec.
Short Circuit Input Current
50 100 mA
No Load
Iout = minimum, unit = ON 50 100 mA
Shut-Down Input Current (Off)
15 18 mA
Refl ected (back) ripple current ➁
Measured at input with specifi ed fi lter 15 30 mA, p-p
GENERAL and SAFETY
GENERAL and SAFETY
Effi ciency
Vin = 48V, full load 89 91 %
Vin = min., full load 89 91 %
Isolation
Isolation Voltage
Input to output, continuous 2250 Vdc
Insulation Safety Rating
basic
Isolation Resistance
100 M
Isolation Capacitance
3300 pF
Safety
Certifi ed to UL-60950-1, CSA-C22.2 No.
60950-1, IEC/EN60950-1, 2nd edition
Yes
Calculated MTBF
Per Telcordia SR332, issue 1, class 3, ground
fi xed, Tambient = +25°C
2.6 Hours x 10
6
DYNAMIC CHARACTERISTICS
DYNAMIC CHARACTERISTICS
Fixed Switching Frequency
470 520 570 KHz
Startup Time
Power on to Vout regulated 15 mS
Startup Time
Remote ON to Vout regulated 20 mS
Dynamic Load Response
50-75-50% load step, settling time to within
1% of Vout
10 100 µSec
Dynamic Load Peak Deviation
same as above ±180 ±240 mV
FEATURES and OPTIONS
FEATURES and OPTIONS
Remote On/Off Control
“N” suffi x:
Negative Logic, ON state
ON = Ground pin or external voltage -0.1 0.8 V
Negative Logic, OFF state
OFF = Pin open or external voltage 2.5 15 V
Control Current
Open collector/drain 1 2 mA
“P” suffi x:
Positive Logic, ON state
ON = Pin open or external voltage 3.5 15 V
Positive Logic, OFF state
OFF = Ground pin or external voltage 0 1 V
Control Current
Open collector/drain 1 2 mA
SMT Mounting
"M" suffi x
Remote Sense
Sense pins connected externally to respective
Vout pins
10 %