Contact us | +1 973.345.5885 |

50 Watt

Quarter Brick Regulated, 2:1 Input

UL- and CE- approved with adjustable output voltage

With a compact quarter brick package of 2.28" x 1.45" x 0.50", our 50 watt quarter brick DC-DC converter features adjustable output voltage, no minimum load and a single output up to 20A. This UL- and CE-approved design is upto 91% efficient.

INPUT

  • Input Voltages
    • 48 Vdc: 36 - 72 Vdc
  • Input Filter: LC Type
  • Start Up Time
    • Nominal Vin and Constant Resistive Load
      • Power Up: 25 mS Typ
      • Remote On/Off: 25 mS Typ
  • Remote on/off
    • Negative Logic
      • DC-DC ON: Short or OV<Vr<1.2V
      • DC-DC OFF: Open or 3.5V<Vr<15V
    • Positive Logic
      • DC-DC ON: Open or 3.5V<Vr<15V
      • DC-DC OFF: Short or OV<Vr<1.2V

OUTPUT

  • Voltage Accuracy (FL and Nominal Vin): ±1.5%
  • Voltage Adjustability: ±10%, -20%
  • Line Regulation
    • LL to HL at FL: ±0.2%
  • Load Regulation
    • NL to FL: 1.8 Vdc 5.4mV
    • 2.5 Vdc: 7.5mV
    • 3.3 Vdc: 10mV
    • 5 Vdc: 15mV
  • Ripple and Noise (20 MHz BW)
    • Measured with a 1uF M/C & a 1OuFT/C: 100mVp-p
  • Temperature Coefficient (at FL): ±0.02%/°C, max
  • Transient Response, 25% load step change: 200 uS

GENERAL

  • Efficiency: 87 - 91%
  • Isolation Voltage: 1600 Vdc, min.
  • Isolation Resistance: 107 Ohms, min.
  • Switching Frequency: 270 KHz, typ.
  • Protection
    • Over Voltage Protection: 120% Vout max.
    • Over current protection threshold: 110 - 140% of load
    • Short circuit protection: hiccup, automatic recovery

ENVIRONMENTAL

  • Operating Base Plate Temperature Range: -40 to 100°C
  • Storage Temperature Range: -55 to 125°C
  • Humidity, Max, Non-Condensing: 95%

PHYSICAL

  • Case Material: Aluminum
  • Weight: 42 g (1.46 oz.)
  • Dimensions: 2.28" x 1.45" x 0.50" (57.9 X 36.83 X 12.7 mm)

EMC CHARACTERISTICS

  • Conducted Emissions
    • EN55022: Level A
    • EN55022: Level B
  • Radiated Emissions: EN550224, Level A
  • ESD: EN61000-4-2, Perf. Criteria 2
  • Radiated Immunity: EN61000-4-3, Perf. Criteria 2
  • Fast Transient: EN61000-4-4, Perf. Criteria 2
  • Surge: EN61000-4-5, Perf. Criteria 2
  • Conducted Immunity: EN61000-4-6 Perf. Criteria 2
Input Voltage
Range (Vdc)		Output Voltage (Vdc)Output Current (mA)Efficiency %Model NumberCase
48 (36-72) 1.8 20000 87 OFQ50-48S1.8 O
2.5 20000 88 OFQ50-48S2.5 O
3.3 15000 90 OFQ50-48S3.3 O
5 10000 91 OFQ50-48S5.0 O