Our 3 watt 2:1 wide input TWA3/MHIA DC-DC converter features a clearance and creepage distance of 8 mm/2 MOPP, a built-in EMI class A filter and a miniature DIP package. This series also features reinforced insulation and operating temperatures between -40 and 105°C with derating.

INPUT

• Operating input voltage range
• 12 Vdc nominal input: 9 - 18 Vdc
• 24 Vdc nominal input: 18 - 36 Vdc
• 48 Vdc nominal input: 36 - 72 Vdc
• Start up voltage
• 5 Vdc nominal input: 4.5 Vdc
• 12 Vdc nominal input: 9 Vdc
• 24 Vdc nominal input: 18 Vdc
• 48 Vdc nominal input: 36 Vdc
• Shutdown voltage
• 5 Vdc nominal input: 4 Vdc
• 12 Vdc nominal input: 8 Vdc
• 24 Vdc nominal input: 16 Vdc
• 48 Vdc nominal input: 33 Vdc
• Start up time
• Constant resistive load
• Power up: 30 mS
• Remote On/Off: 30 mS
• Input surge voltage, 3 sec. max.
• 5 Vdc nominal input: 16 Vdc
• 12 Vdc nominal input: 25 Vdc
• 24 Vdc nominal input: 50 Vdc
• 48 Vdc nominal input: 100 Vdc
• Input filter: Pi type
• Reflected ripple current: 20 mAp-p
• Remote On/Off: referred to -INPUT pin
• DC-DC ON: Open or 0 - 1.2 Vdc
• DC-DC OFF: 2.2 - 12 Vdc
• Input current of remote control pin: -0.5 - 1 mA
• Remote off input current: 2.5 mA

OUTPUT

• Output power: 3 watts
• Voltage accuracy: ±1%
• Line regulation
• Low line to high line at full load
• Single: ±0.2%
• Dual: ±0.5%

• Load regulation
• No load to full load
• Single: ±0.2%
• Dual: ±1%
• Cross regulation
• Asymmetrical load 25%/100%FL, dual: ±5%
• Ripple and noise, measured by 20 MHz bandwidth
• With a 10μ/25V X7R MLCC
• 3.3 and 4 Vout: 30 mVp-p
• With a 10μ/25V X7R MLCC
• 12 and 15 Vout: 40 mVp-p
• With a 4.7μF/50V X7R MLCC
• 24 Vout: 50 mVp-p
• Temperature Coefficient (at FL): 0.02%/°C max.
• Transient response recovery time
• 25% load step change: 250µs
• Over voltage protection, continuous clamp
• 3.3 Vout: 3.7 - 5.4 Vdc
• 5 Vout: 5.6 - 7 Vdc
• 12 Vout: 13.5 - 19.6 Vdc
• 15 Vout: 18.3 - 22 Vdc
• 24 Vout: 29.1 - 32.5 Vdc
• Over load protection: 150%
• Short circuit protection: continuous, automatic recovery

GENERAL

• Efficiency: 81 - 87.5%
• Isolation voltage
• Input to output: 5000 Vac
• Leakage current, 240 Vac, 60 Hz: 2 µA
• Isolation capacitance: 12 - 17 pF
• Switching frequency: 300 kHz

ENVIRONMENTAL

• Operating ambient temperature
• Without derating: -40 to 94°C
• With derating: 77 to 105°C
• Storage temperature range: -55 to 125°C
• Thermal impedance
• Natural convection (20LFM): 18°C/W
• Thermal shock: MIL-STD-810F
• Vibration: MIL-STD-810F
• Relative humidity: 5 to 95%

PHYSICAL

• Clearance/creepage: 8mm
• Design meets safety standards: ANSI/AAMI, ES60601-1, IEC60601-1, EN60601-1
• Case material: Nickel coated copper
• Base material: Non-conductive, black, plastic
• Potting material: silicone (UL94-V0)
• Weight: 14 g (0.48 oz)
• Dimensions: 1.25" x 0.80" x 0.40" (31.8 x 20.3 x 10.2 mm)
• MTBF: 8.638 x 10⁵ hours, MIL-HDBK-217F Ta25°C. full load (G/B, controlled environment)

EMC CHARACTERISTICS

• EMI
• Class A and B: EN55011, EN55022 and FCC part 18
• ESD: EN6100-4-2, Perf. Criteria A
• Air: ±8kV
• Contact: ±6kV
• Radiated immunity
• EN61000-4-3: 10 V/m, Perf. Criteria A
• Fast transient
• EN61000-4-4: ±2kV, Perf. Criteria A
• Surge
• EN61000-4-5: ±2kV, Perf. Criteria A
• Conducted immunity
• EN61000-4-6: 10Vr.m.s, Perf. Criteria A