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)