Datasheet

DRQ-12/50-L48 Series
600W Digital Fully Regulated
Intermediate DC-DC Bus Converter
MDC_DRQ-12/50-L48NK.B02 Page 3 of 26
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FUNCTIONAL SPECIFICATIONS
ABSOLUTE MAXIMUM RATINGS
Conditions ➀
Minimum Typical/Nominal Maximum Units
Input Voltage, Continuous 0 60 Vdc
Isolation Voltage Input to output, continuous 2250 Vdc
On/Off Remote Control Power on, referred to -Vin 0 13.5 Vdc
Output Power 0 612 W
Output Current
Current-limited, no damage, short-circuit
protected
050A
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 44 48 60 Vdc
Recommended External Fuse Fast blow 25 A
Start-up threshold Rising input voltage 41 42 43 Vdc
Undervoltage shutdown Falling input voltage 39 40 41 Vdc
Overvoltage Shutdown 64 66 68 Vdc
Overvoltage Recover 62 64 66 Vdc
Internal Filter Type Pi
Input current
Full Load Conditions Vin = nominal 13.02 14.02 A
Low Line Vin = minimum 14.2 14.28 A
Inrush Transient 0.15 0.30 A
2
-Sec.
Short Circuit Input Current 0.05 0.1 A
No Load Input Current Iout = minimum, unit = ON 150 200 mA
Shut-Down Input Current (Off, UV, OT) 10 20 mA
Refl ected (back) ripple current ➁
Measured at input with specifi ed fi lter 100 180 mA, p-p
Pre-biased startup External output voltage < Vset Monotonic
GENERAL and SAFETY
Effi ciency Vin = 48V, full load 95 96 %
Vin = min., full load 95.5 96 %
Isolation
Isolation Voltage Input to output, continuous 2250 Vdc
Isolation Voltage Input to baseplate, continuous 1500 Vdc
Isolation Voltage Output to baseplate, continuous 1500 Vdc
Insulation Safety Rating functional
Isolation Resistance 10 M
Isolation Capacitance 1500 pF
Safety
Certifi ed to UL-60950-1, CSA-C22.2 No. 60950-
1, IEC 60950-1, 2nd edition
Yes
Calculated MTBF
Per Telcordia SR332, issue 2, class 3, method 1,
ground fi xed, Tambient = +25°C
3.2 Hours x 10
6
DYNAMIC CHARACTERISTICS
Fix Frequency Control 150 KHz
Vin Startup delay time Power on to Vout regulated 25 30 mS
Enable startup delay time Remote ON to Vout regulated 3 5 mS
Rise Time 15 20 mS
Dynamic Load Response
50-75-50% load step, settling time to within 1%
of Vout (Cout=3300µF)
200 250 µSec
Dynamic Load Peak Deviation same as above ±250 ±300 mV
FEATURES and OPTIONS
Remote On/Off Control ➃
“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 3.5 13.5 V
Control Pin Shutdown Current Open collector/drain 5 mA
Control Pin On Current 1mA
“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 0.8 V
Control Pin Shutdown Current Open collector/drain 1 mA
Control Pin On Current 5mA