Datasheet

UWQ-12/17-Q48 Series
Wide Input, Isolated DOSA Quarter Brick DC/DC Converters
MDC_UWQ-12/17-Q48 Series.A06 Page 3 of 17
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FUNCTIONAL SPECIFICATIONS
ABSOLUTE MAXIMUM RATINGS
Conditions ➀
Minimum Typical/Nominal Maximum Units
Input Voltage, Continuous Full power operation 18 48 80 Vdc
Input Voltage, Transient
Operating or non-operating,
100 mS max. duration
100 Vdc
Isolation Voltage Input to output 2250 Vdc
Input Reverse Polarity None, install external fuse None Vdc
On/Off Remote Control Power on or off, referred to -Vin 0 13.5 Vdc
Output Power 0 210 W
Output Current
Current-limited, no damage,
short-circuit protected
017A
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
Conditions ➀ ➂
Operating voltage range 18 48 75 Vdc
Recommended External Fuse Fast blow 20 A
Start-up threshold, measured at 50% load Rising input voltage 16.5 17.5 17.9 Vdc
Undervoltage shutdown, measured at 50% load Falling input voltage 15 16 17 Vdc
Overvoltage protection Rising input voltage None Vdc
Reverse Polarity Protection None, install external fuse; see technical notes None Vdc
Internal Filter Type L-C
Input current
Full Load Conditions Vin = nominal 4.52 4.76 A
Low Line Vin = minimum 12.06 12.69 A
Inrush Transient Vin = 48V. 0.05 TBD A2-Sec.
Output in Short Circuit 50 100 mA
No Load input current Iout = minimum, unit=ON 80 150 mA
Shut down mode input current 5 6.5 mA
Refl ected (back) ripple current ➁
Measured at input with specifi ed fi lter 15 25 mA, RMS
Back Ripple Current, No Filtering 500 525 mA-p-p
Back Ripple Current, with 22μF external
input capacitor
300 400 mA-p-p
Pre-biased startup External output voltage < Vset Monotonic
GENERAL and SAFETY
Effi ciency Vin=48V, full load 90 92 %
Vin=18V 90 92 %
Isolation
Isolation Voltage, input to output With or without baseplate 2250 Vdc
Isolation Voltage, input to baseplate With baseplate 1500 Vdc
Isolation Voltage, output to baseplate With baseplate 1500 Vdc
Insulation Safety Rating basic
Isolation Resistance 100 M
Isolation Capacitance 1500 pF
Safety (certifi ed to the following
requirements)
UL-60950-1, CSA-C22.2 No.60950-1,
IEC/EN60950-1, 2nd edition
Yes
Calculated MTBF
Per Telcordia SR-332, issue 1, class 3, ground
fi xed, Tambient=+25°C
TBC Hours x 10
3
DYNAMIC CHARACTERISTICS
Fixed Switching Frequency 160 180 200 KHz
Startup Time
Power On, to Vout regulation band,
100% resistive load
60 65 mS
Startup Time Remote ON to Vout Regulated 60 65 mS
Dynamic Load Response 50-75-50% load step to 3% error band 220 275 µSec
Dynamic Load Peak Deviation same as above ±1100 ±1300 mV
FEATURES and OPTIONS
Remote On/Off Control ➃
“N” suffi x:
Negative Logic, ON state ON = pin grounded or external voltage 0 1 Vdc
Negative Logic, OFF state OFF = pin open or external voltage 3.5 13.5 Vdc
Control Current open collector/drain 1 2 mA
“P” suffi x:
Positive Logic, ON state ON = pin open or external voltage 3.5 13.5 V
Positive Logic, OFF state OFF = ground pin or external voltage 0 1 V
Control Current open collector/drain 1 2 mA
Base Plate "B" suffi x optional