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3 Watt

Single and Dual Output
2:1 Wide Input Range for Medical Applications


High efficiency with a miniature DIP package

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 converter 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
Input Voltage
Range (Vdc)
Output Voltage
(Vdc)
Output Current
at Full Load (mA)
Input Current
at No Load (mA)
Efficiency
%
Model Number Maximum
Capacitor
Load µF
Single Output
4.5 - 9 3.3 1000 10 81 TWA3-5S33/MHIA5 1050
5 600 10 84.5 TWA3-5S5/MHIA5 750
12 250 15 85.5 TWA3-5S12/MHIA5 130
15 200 15 87.5 TWA3-5S15/MHIA5 100
24 125 20 85.5 TWA3-5S24/MHIA5 39
9 - 18 3.3 1000 10 82 TWA3-12S33/MHIA5 1050
5 600 10 84.5 TWA3-12S5/MHIA5 750
12 250 10 87 TWA3-12S12/MHIA5 130
15 200 10 87 TWA3-12S15/MHIA5 100
24 125 10 87 TWA3-12S24/MHIA5 39
18 - 36 3.3 1000 6 82 TWA3-24S33/MHIA5 1050
5 600 6 84.5 TWA3-24S5/MHIA5 750
12 250 6 87 TWA3-24S12/MHIA5 130
15 200 6 87 TWA3-24S15/MHIA5 100
24 125 6 87 TWA3-24S24/MHIA5 39
36 - 72     3.3 1000 4 81 TWA3-48S33/MHIA5 1050
5 600 4 84 TWA3-48S5/MHIA5 750
12 250 4 87 TWA3-48S12/MHIA5 130
15 200 4 86.5 TWA3-48S15/MHIA5 100
24 125 4 86.5 TWA3-48S24/MHIA5 39
Dual Output
4.5 - 9   ±5 ±300 25 83 TWA3-5-5/MHIA5 ±430
±12 ±125 25 86 TWA3-5-12/MHIA5 ±75
±15 ±100 25 86 TWA3-5-15/MHIA5 ±56
9 - 18   ±5 ±300 10 83.5 TWA3-12-5/MHIA5 ±430
±12 ±125 10 87.5 TWA3-12-12/MHIA5 ±75
±15 ±100 10 86.5 TWA3-12-15/MHIA5 ±56
18 - 36   ±5 ±300 6 83 TWA3-24-5/MHIA5 ±430
±12 ±125 6 87 TWA3-24-12/MHIA5 ±75
±15 ±100 6 86 TWA3-24-15/MHIA5 ±56
36 - 72   ±5 ±300 4 83 TWA3-48-5/MHIA5 ±430
±12 ±125 4 86 TWA3-48-12/MHIA5 ±75
±15 ±100 4 86 TWA3-48-15/MHIA5 ±56