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3 Watt

Single and Dual Output For Medical Applications

Promoting patient's safety

Our 3 watt single and dual output DC-DC converter can be used in a variety of medical applications. This design features 2 MOPP isolation, 5000 VAC input/output and a 2µA patient leakage current, and has been thoroughly tested to meet patient safety requirements including IEC60601-1.

The 3 watt single and dual converter also features a 4:1 wide input voltage range, reinforced insulation and a built-in EMI Class A filter.

INPUT

  • Voltage Range:
    • 24 Vdc nominal input: 9 - 36 Vdc
    • 48 Vdc nominal input: 18 - 75 Vdc
  • Input filter: capacitor type (pi filter)
  • Input Surge Voltage:
    • 24 Vdc input: 50 Vdc 100ms, max.
    • 48 Vdc input: 100 Vdc 100ms, max.
  • Input Reflected Ripple Current: 20 mA p-p
  • Start up Time: Constant resistive load
    • Power up: 30 ms
    • Remote ON/OFF: 30 ms
  • Startup Voltage:
    • 24 Vdc input: 9 Vdc, max.
    • 48 Vdc input: 18 Vdc, max.
  • Shutdown Voltage
    • 24 Vdc input: 8 Vdc
    • 48 Vdc input: 16 Vdc
  • Remote ON/OFF
    • ON: Open or 0 - 1.2 Vdc CD-CD
    • OFF: 2.2 - 12 Vdc CD-CD

OUTPUT

  • Output Power: 3 watts max.
  • Voltage Accuracy: ±1.0%
  • Line Regulation: LL to HL at Full
    • Single: ±0.2%
    • Dual: ±0.5%
  • Load Regulation: No Load to Full Load
    • Single: ±0.2%
    • Dual: ±1.0%
  • Cross Regulation: Asymmetrical Load 25 or 100% FL
    • Dual: ±5%
  • Ripple and Noise:
    • With a 10µF/25V X7R MLCC
      • 3.3 Vout, 5 Vout: 30 mVp-p
      • 12 Vout, 15 Vout: 40 mVp-p
    • With a 4.7µF/50V X7R MLCC
      • 24 Vout: 50 mVp-p
  • Temperature Coefficient: ±0.2% °C, max.
  • Transient Response recovery Time: 25% load step change, 250µS
    • 3.3 Vout: 3.7 - 5.4 Vdc
    • 5 Vout: 5.6 - 7.0 Vdc
  • Over voltage protection, continuous clamp
    • 12 Vout: 3.5 - 19.6 Vdc
    • 15 Vout: 18.3 - 22.0 Vdc
    • 24 Vout: 29.1 - 32.5 Vdc
  • Overload Protection
    • Percent of Iout rated, hiccup mode: 150%
  • Short Circuit Protection: Continuous, automatic recovery

GENERAL

  • Efficiency: 81-86%
  • Isolation Voltage, Input to Output: 5000 VAC, min. 1 minute
  • Isolation Capacitance: 12 - 17 pF
  • Leakage Current: 24 VAC, 60 HZ, 2 µA
  • Switching Frequency: 300 kHz Typ.
  • Clearance and Creepage: 8 mm
  • Approvals and Standard: ANSI/AAMI, ES60601-1, IEC6060-1, EN60601-1
  • Case Material: Nickel Coated Copper
  • Base Material: Non-conductive black plastic
  • Potting Material: Silicon (UL94-V0)
  • Dimensions: 1.25 x 0.80 x 0.40 inches (31.8 x 20.3 x 10.2 mm)
  • Weight: 14 g (0.48 oz.)
  • MTBF: MIL-HDBK-217F Ta25϶C, Full load: 8.638 x 105 hours

ENVIRONMENTAL

  • Operating Ambient Temperature
  • Without derating: -40°C to 77°C
  • With derating: 77°C to 105°C
  • Storage Temperature Range -55°C to 125°C
  • Thermal Impedance: Natural Convection (20LFM): 18°C/Watt
  • Thermal Shock: MIL-STD-810F
  • Vibration: MIL-STD-810F
  • Relative Humidity: 5 to 95% RH

EMC CHARACTERISTICS

  • EMI
    • EN55011, EN55022 and FCC Part 18: Class A, Class B
  • ESD
    • EN61000-4-2 (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: 10 Vrms, Perf. Criteria A

Notes:

1. The TWB3/MHIA5 Series can meet EMI Class A with no external filter. And Class B only with external components.

Input Voltage
Range (Vdc)		 Output Voltage
(Vdc)		 Output Current
(mA)		 Output Ripple and Noise Input Current No load (mA) Efficiency % Model Number Capacitor Load max.
Single Output
24 (9-36) 3.3 1000 30m Vp-p 6 82 TWB3-24S33/MHIA5 1050μF
5 600 30m Vp-p 6 84.5 TWB3-24S5/MHIA5 750μF
12 250 40m Vp-p 6 87 TWB3-24S12/MHIA5 130μF
15 200 40m Vp-p 6 87 TWB3-24S15/MHIA5 100μF
24 125 50m Vp-p 6 87 TWB3-24S24/MHIA5 39μF
48 (18-75) 3.3 1000 30m Vp-p 4 81 TWB3-48S33/MHIA5 1050μF
5 600 30m Vp-p 4 83 TWB3-48S5/MHIA5 750μF
12 250 40m Vp-p 4 87 TWB3-48S12/MHIA5 130μF
15 200 40m Vp-p 4 87 TWB3-48S15/MHIA5 100μF
24 125 50m Vp-p 4 86 TWB3-48S24/MHIA5 39μF
Dual Output
24 (9-36) ±5 ±300 30m Vp-p 6 83 TWB3-24-5/MHIA5 ±430μF
±12 ±125 40m Vp-p 6 87 TWB3-24-12/MHIA5 ±75μF
±15 ±100 40m Vp-p 6 86 TWB3-24-15/MHIA5 ±56μF
48 (18-75) ±5 ±300 30m Vp-p 4 83 TWB3-48-5/MHIA5 ±430μF
±12 ±125 40m Vp-p 4 86 TWB3-48-12/MHIA5 ±75μF
±15 ±100 40m Vp-p 4 86 TWB3-48-15/MHIA5 ±56μF