Datasheet

HPQ-12/25-D48 Series
Isolated 300-Watt Quarter Brick DC-DC Converters
MDC_HPQ-12/25-D48 Series.B07 Page 3 of 16
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FUNCTIONAL SPECIFICATIONS
ABSOLUTE MAXIMUM RATINGS
Conditions ➀
Minimum Typical/Nominal Maximum Units
Input Voltage, Continuous Full power operation 36 80 Vdc
Input Voltage, Transient
Operating or non-operating,
100 mS max. duration
100 Vdc
Isolation Voltage Input to output tested 100 mS 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 0 300 W
Output Current
Current-limited, no damage,
short-circuit protected
025A
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 36 48 75 Vdc
Recommended External Fuse Fast blow 20 A
Start-up threshold Rising input voltage 33 34 35 Vdc
Undervoltage shutdown Falling input voltage 31 32 34 Vdc
Overvoltage protection Rising input voltage None Vdc
Reverse Polarity Protection None, install external fuse None Vdc
Internal Filter Type Pi-type
Input current
Full Load Conditions Vin = nominal 6.61 6.82 A
Low Line Vin = minimum 8.82 9.1 A
Inrush Transient Vin = 48V. 0.3 A2-Sec.
Output in Short Circuit 50 100 mA
No Load Iout = minimum, unit=ON 150 250 mA
Standby Mode (Off, UV, OT) 510mA
Refl ected (back) ripple current ➁
Measured at input with specifi ed fi lter 50 70 mA, RMS
GENERAL and SAFETY
Effi ciency Vin=48V, full load 94 95 %
Isolation
Isolation Voltage, input to output No baseplate 2250 Vdc
Isolation Voltage, input to output With 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 10 M
Isolation Capacitance 1000 pF
Safety
Certifi ed to UL-60950-1, CSA-C22.2 No.60950-1,
IEC/EN60950-1, 2nd edition
Yes
Calculated MTBF
Per MIL-HDBK-217F, ground benign,
Tambient=+TBD°C
TBD Hours x 10
3
Calculated MTBF
Per Telcordia SR-332, issue 1, class 3, ground
fi xed, Tcase=+25°C
1500 Hours x 10
3
DYNAMIC CHARACTERISTICS
Fixed Switching Frequency 260 KHz
Startup Time ➈
Power On, to Vout regulation band,
100% resistive load
25 mS
Startup Time Remote ON to Vout Regulated 25 mS
Dynamic Load Response 50-75-50% load step to 1% error band 550 825 µSec
Dynamic Load di/dt 0.1 A / µSec
Dynamic Load Peak Deviation same as above ±500 ±750 mV
FEATURES and OPTIONS
Remote On/Off Control ➃
“N” suffi x:
Negative Logic, ON state ON = pin grounded or external voltage -0.1 0.8 Vdc
Negative Logic, OFF state OFF = pin open or external voltage 3.5 13.5 Vdc
Control Current open collector/drain 2 mA