Datasheet

PAH 48, 53 Vout, 450W Series
Isolated, up to 450 Watt, Half-Brick DC-DC Converters
MDC_PAH-48-53Vout-450W.A10 Page 4 of 19
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Notes
➀ Unless otherwise noted, all specifi cations are at nominal input voltage, nominal output voltage
and full load. General conditions are +25˚ Celsius ambient temperature, near sea level altitude,
natural convection airfl ow. All models are tested and specifi ed with external parallel 1 µF and 470
µF output capacitors. A 220µF external input capacitors is required. All capacitors are low-ESR
types wired close to the converter.
➁ Input (back) ripple current is tested and specifi ed over 5 Hz to 20 MHz bandwidth. Input fi ltering
is Cbus=220 µF/100V, Cin=470 µF/100V and Lbus=12 µH.
➂ The Remote On/Off Control is referred to -Vin.
➃ Over-current protection is non-latching with auto reovery (Hiccup)
➄ Regulation specifi cations describe the output voltage changes as the line voltage or load current
is varied from its nominal or midpoint value to either extreme.
➅ Required minimum output capacitance is 220 µF, low ESR.
OUTPUT
Total Output Power See Derating 408 414.12 W
Voltage
Nominal Output Voltage No trim 47.28 48 48.72 Vdc
Setting Accuracy At 50% load 1.5 % of Vnom.
Output Voltage Range User-adjustable 28.8(40%) 55.2(15%) Vdc
Overvoltage Protection Via magnetic feedback 52.8 57.6 70 Vdc
Current
Output Current Range 0 8.5 8.5 A
Minimum Load No minimum load
Current Limit Inception ➃
98% of Vnom., after warmup 9 12 15 A
Short Circuit
Short Circuit Current
Hiccup technique, autorecovery within ±1% of
Vout
0.5 5.0 A
Short Circuit Duration
(remove short for recovery)
Output shorted to ground, no damage Continuous
Short circuit protection method Current limiting
Regulation ➄
Line Regulation Vin=min. to max. Vout=nom. ±0.6 %
Load Regulation Iout=min. to max. Vin=48V. ±0.6 %
Ripple and Noise 5 Hz- 20 MHz BW 75 200 mV pk-pk
Temperature Coeffi cient At all outputs .02 % of Vnom./°C
External output capacitance required ➅
Cap. ESR=<0.02, Full resistive load 220 1000 F
MECHANICAL (Through Hole Models)
Outline Dimensions with baseplate; see mechanical drawing 2.3 X 2.4 X 0.5 Inches
58.4x60.96x12.7 mm
Weight 3.33 Ounces
94.4 Grams
Through Hole Pin Diameter Pins 1–4, 6–8/5,9 0.040/0.06 Inches
1.016/1.524 mm
Through Hole Pin Material Copper alloy
TH Pin Plating Metal and Thickness Nickel subplate 100-299 µ-inches
Gold overplate 10.31 µ-inches
Case or Baseplate Material Aluminum
ENVIRONMENTAL
Operating Ambient Temperature Range See derating curves -40 85 ˚C
Operating Case Temperature -40 115 ˚C
Storage Temperature Vin = Zero (no power) -55 125 ˚C
Thermal Protection/Shutdown Measured in center 115 125 130 ˚C
Electromagnetic Interference
Conducted, EN55022/CISPR22
External fi lter required B Class
Relative humidity, non-condensing To +85°C 10 90 %RH
Altitude -500 10,000 feet
(must derate -1%/1000 feet) -152 3048 meters
RoHS rating RoHS-6
FUNCTIONAL SPECIFICATIONS, PAH-48/8.5-D48 (CONT.)