Daburn Electronics & Cable DC-DC Converter, 75 Watt Half Brick 4:1 Ultra Wide Input Range, 2.28" X 2.40" X 0.50" HWB75

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)