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75 Watt

4:1 Ultra Wide Input Range


Half-brick for railway applications

Ideal for railways applications, our 75 watt half-brick DC-DC converter features high efficiency up to 91%, 3000 Vac reinforced insulation and no minimum load required. This series meets EN50155, EN50121-3 and EN61373 requirements and UL60950-1, EN60950-1 and IEC60950-1 safety standards.

 

INPUT

  • Voltage range
    • 24 Vdc nominal input: 9 to 36 Vdc
    • 48 Vdc nominal input: 18 to 75 Vdc
    • 110 Vdc nominal input: 43 to 160 Vdc
  • Start up voltage
    • 24 Vdc nominal input: 9 Vdc
    • 48 Vdc nominal input: 18 Vdc
    • 110 Vdc nominal input: 43 Vdc
  • Shutdown voltage
    • 24 Vdc nominal input: 7.5 Vdc
    • 48 Vdc nominal input: 16 Vdc
    • 110 Vdc nominal input: 36 Vdc
  • Start up time
    • Power up, 110 Vdc nominal input: 60 mS
    • Power up, others: 25 mS
    • Remote ON/OFF, 110 Vdc nominal input: 60 mS
    • Remote ON/OFF, others: 25 mS
  • Input surge voltage
    • 24 Vdc nominal input: 50 Vdc
    • 48 Vdc nominal input: 100 Vdc
    • 110 Vdc nominal input: 185 Vdc
  • Input filter: Pi type
  • Remote ON/OFF
    • Positive logic (Option)
      • DC-DC ON: Open or 3 to 12 Vdc
      • DC-DC OFF: Short or 0 to 1.2 Vdc
    • Negative logic (Standard)
      • DC-DC ON: Short or 0 to 1.2 Vdc
      • DC-DC OFF: 3 to 12 Vdc
  • Input current of control pin: -0.5 to 1 mA
  • Remote off input current: 3 mA

OUTPUT

  • Voltage accuracy: ±1%
  • Line regulation
    • Low line to high line at full load: ±0.1%
  • Load regulation
    • No load to full load: -20 to 10%
  • Voltage and adjustability: -20 to 10%
    • Maximum output deviation inclusive of remote sense
  • Remote sense: 10%
  • Ripple and noise (measured by 20 MHz bandwidth)
    • 3.3 and 5 Vout: 75 to 100 mVp-p
    • 12 and 15 Vout: 100 to 125 mVp-p
    • 24 and 28 Vout: 200 to 250 mVp-p
    • 48 Vout: 300 to 350 mVp-p
  • Temperature coefficient: ±0.02%/°C
  • Transient response recovery time
    • 25% load step change: 200 to 250μS
  • Over voltage protection: 115 to 130%
  • Over load protection
    • Percent of lout rated, hiccup mode, 110Vin(nom): 150%
    • Others: 110 to 140%
  • Short circuit protection: continuous, automatic recovery

GENERAL

    • Efficiency: 87 to 91%
    • Isolation voltage
      • Input to output: 3000 Vac, min. 1 minute
      • Input to case: 1500 Vac, min. 1 minute
    • Isolation voltage
      • Input to output: 2250 Vdc, min. 1 minute
      • Input to case: 1600 Vdc, min. 1 minute
    • Isolation resistance: 500 Vdc
    • Isolation capacitance: 2500 pF
    • Switching frequency
      • 110 Vdc nominal input: 270 to 330 kHz

ENVIRONMENTAL

    • Operating case temperature
      • Base-plate: -40 to 105°C
    • Over temperature protection: 115°C
    • Short temperature range
      • Terminal block type: -40 to 105°C
      • Others: -55 to 125°C
    • Thermal impedance
      • Module without assembly option: 6.7°C/W
      • Heat sink type with 0.25" height: 5.4°C/W
      • Heat sink type with 0.45" height: 4.7°C/W
    • Thermal shock: MIL-STD-810F
    • Shock: EN61373, MIL-STD-810F
    • Vibration: EN61373, MIL-STD-810F
    • Relative humidity: 5 to 95%

PHYSICAL

  • Safety standards:
    • UL60950-1, EN60950-1, IEC60950-1, EN50155
  • Case material
    • 24 and 48 Vin(nom): Metal
    • 100 Vin(nom): aluminum base-plate with plastic case
  • Base material
    • 24 and 48 Vin(nom): FR4 PCB
  • Potting material: silicone (UL94 V-0)
  • Weight: 97 g. (3.42 oz.)
  • MTBF: 3.362 x 105, MIL-HDBK-217F, full load

EMC CHARACTERISTICS

  • EMI
    • EN55011: Class A
    • EN55022: Class B
  • ESD, EN61000-4-2, Perd Criteria A
    • Air: ±8kV
    • Contact: ±6kV
  • Radiated immunity
    • EN6100-4-3: 20 V/m (Perf. Criteria A)
  • Fast transient
    • EN6100-4-4: ±2kV (Perf. Criteria A)
  • Surge: EN6100-4-5
    • EN55024: ±2kV
    • EN50155: ±2kV
  • Conducted immunity
    • EN6100-4-6: 10Vr.m.s (Perf. Criteria A)
Input Voltage

Range (Vdc)
Output Voltage
(Vdc)
Output Current
Full Load (A)
Input Current
No load (mA)
Efficiency
(%)
Model NumberMax. Capacitor
Load µF
9 - 36 3.3 20 85 87 HWB75-24S33 60600
5 15 120 88 HWB75-24S5 30000
12 6.3 185 88 HWB75-24S12 5250
15 5 185 88 HWB75-24S15 3330
24 3.2 85 87 HWB75-24S24 1330
28 2.7 85 87 HWB75-24S28 960
48 1.6 85 87 HWB75-24S48 330
18 - 75 3.3 20 60 88 HWB75-48S33 60600
5 15 60 90 HWB75-48S5 30000
12 6.3 90 90 HWB75-48S12 5250
15 5 50 89 HWB75-48S15 3330
24 3.2 50 88 HWB75-48S24 1330
28 2.7 50 88 HWB75-48S28 960
48 1.6 50 87 HWB75-48S48 330
43 - 160

3.3 20 10 89 HWB75-110S33 60600
5 15 10 91 HWB75-110S5 30000
12 6.3 10 91 HWB75-110S12 5250
15 5 10 91 HWB75-110S15 3330
24 3.2 10 90 HWB75-110S24 1330
28 2.7 10 90 HWB75-110S28 960
48 1.6 10 90 HWB75-110S48 330