Datasheet

PAQ Series
Up to 150W 29.8V Nom Output Quarter-Brick Isolated
DC-DC Converter with 2:1 Wide Input Range
MDC_PAQ Series.A02 Page 3 of 16
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FUNCTIONAL SPECIFICATIONS
ABSOLUTE MAXIMUM RATINGS
Conditions ➀ /Comments
Minimum Typical/Nominal Maximum Units
Input Voltage, Continuous 0 80 Vdc
Input Voltage, Transient 100 mS max. duration 100 Vdc
Isolation Voltage Input to output, continuous 2250 Vdc
On/Off Remote Control Power on, referred to -Vin 0 13.5 Vdc
Output Power 0 150.49 W
Output Current
Current-limited, no damage, short-circuit
protected
05A
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 8 A
Start-up threshold Rising input voltage 32.75 33.5 35 Vdc
Undervoltage shutdown Falling input voltage 31 32 34 Vdc
Internal Filter Type L-C
Input current
Full Load Conditions Vin = nominal 3.36 3.45 A
Low Line Vin = minimum 4.45 4.54 A
Inrush Transient 0.125 0.15 A
2
-Sec.
Output in Short Circuit 0.2 0.3 A
No Load Iout = 0, unit = ON 85 115 mA
Shut-Down Input Current (Off, UV, OT) 25mA
Refl ected (back) ripple current ➁
Measured at input with specifi ed fi lter 25 30 mA, p-p
Pre-biased startup External output voltage < Vset. Monotonic
GENERAL and SAFETY
Effi ciency Vin = 48V, full load 91 92.5 %
Vin = min. 92 93 %
Isolation
Isolation Voltage Input to output, continuous 2250 Vdc
Input to baseplate 1500 Vdc
Output to 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
TBD Hours x 10
3
DYNAMIC CHARACTERISTICS
Fixed Switching Frequency 180 190 200 KHz
Startup Time Power on to Vout regulated 70 80 mS
Startup Time Remote ON to Vout regulated 70 80 mS
Dynamic Load Response
50-75-50% load step, settling time to within
3% of Vout
60 120 µSec
Dynamic Load Peak Deviation same as above ±300 ±400 mV
FEATURES and OPTIONS
Remote On/Off Control ➃
“N” suffi x:
Negative Logic, ON state ON = Pin connected to -Vin or to external source 0 1 Vdc
Negative Logic, OFF state
OFF = Pin open or connected to external voltage
source
3.5 13.5 Vdc
Control Current Open collector/drain 1 mA
“P” suffi x:
Positive Logic, ON state
ON = Pin open or connected to external voltage
source
3.5 13.5 Vdc
Positive Logic, OFF state
OFF = Pin connected to -Vin or to external
voltage
0 1 Vdc
Control Current Open collector/drain 1 mA
Base Plate "B" suffi x
Case to Ground pin option ("3" Suffi x)