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2 Watt

2:1 Input Range


DC-DC Converters Designed For Medical Applications

Our MTWA2 series of DC-DC converters integrates a range of features, including 5,000 Vac input to output 2 MOPP isolation and remote ON/OFF. Their input voltage range (4.5–12 Vdc) is wider than the standard 4.5–9 Vdc for use in portable devices. Units also offer overvoltage, undervoltage and short circuit protection—all in miniature DIP16 (0.95 x 0.57 x 0.41”) and SMD16 (0.95 x 0.57 x 0.40”) packages to better fit your design. Approved for medical applications, this series meets IEC 60601-1 and RoHS standards.

MTWA2

INPUT

  • Voltage range, Vdc
    • 4.5 Min., 5 Typ., 12 Max., 5 Vin (nom)
    • 9 Min., 12 Typ., 18 Max., 12 Vin (nom)
    • 18 Min., 24 Typ., 36 Max., 24 Vin (nom)
    • 36 Min., 48 Typ., 75 Max., 28 Vin (nom)
  • Start Up Voltage, Vdc:
    • 4.5 Max., 5 Vin (nom)
    • 9 Max., 12 Vin (nom)
    • 18 Max., 24 Vin (nom)
    • 36 Max., 28 Vin (nom)
  • Shutdown Voltage, Vdc:
    • 2 Min., 3 Typ., 4 Max., 5 Vin (nom)
    • 6 Min., 7 Typ., 8 Max., 12 Vin (nom)
    • 13 Min., 15 Typ., 17 Max., 24 Vin (nom)
    • 29 Min., 32 Typ., 35 Max., 28 Vin (nom)
  • Start up time, ms
    • 10 Typ., 20 Max., Constant resistive load, Power up, Remote ON/OFF
  • Input Surge Voltage, Vdc
    • 15 Max., 5 Vin (nom)
    • 25 Max., 12 Vin (nom)
    • 50 Max., 24 Vin (nom)
    • 100 Max., 28 Vin (nom)
  • Input Filter: Capacitor type
  • Remote ON/OFF, mA
    • Open or high impedance: Referred to –Vin pin and Ctrl pin, DC-DC ON
    • 2 Min., 3 Typ., 4 Max., Applied current, DC-DC OFF
    • 2.5 Typ., Remote OFF input current

OUTPUT

  • Voltage Accuracy, %: -1 Min., 1 Max.
  • Line Regulation, -0.2 Min., 0.2 Max., Low line to high line at full load
  • Load Regulation, %
    • -1 Min., 1 Max., No load to full load, Single
    • -1 Min., 1 Max., Dual
    • -0.5 Min., 0.5 Max., 10% load to 90% load, Single
    • -0.8 Min., 0.8 Max., Dual
  • Cross regulation, %
    • -5 Min., 5 Max., Asymmetrical load 25%/100% FL, Dual
  • Ripple and noise, mVp-p
    • 50 Typ., Measured by 20MHz bandwidth
  • Temperature coefficient, %/ºC: -0.02 Min., 0.02 Max.
  • Transient response recovery time, μs: 500 Typ., 25% load step change
  • Overvoltage Protection, Vdc
    • 4 Min., 6.5 Max., 3.3Vout
    • 6 Min., 8 Max., 5Vout
    • 10 Min., 14 Max., 9Vout
    • 13 Min., 19 Max., 12Vout
    • 16 Min., 22 Max., 15Vout
    • 25 Min., 35 Max., 24Vout
  • Short Circuit Protection: Continuous, automatic recovery

GENERAL SPECIFICATIONS

  • Isolation Voltage, Vac:
    • 1 minute, reinforced insulation for 250 Vac working voltage, 5000 Min.
  • Isolation capacitance, pF: 16 Typ., 20 Max.
  • Leakage currect, μA: 240 Vac, 60 Hz, 2 Max.
  • Switching frequency, kHz: 100 Min.
  • Clearance/creepage, mm: 8 Min.

ENVIRONMENTAL SPECIFICATIONS

  • Operating ambient temperature, ºC
    • With derating: -40 Min.+105 Max.
  • Maximum case temperature, ºC: +105 Max.
  • Storage temperature range, ºC: -55 Min., +125 Max.
  • Operating altitude, m: 5000 Max.
  • Thermal shock: MIL-STD-810-F
  • Shock: MIL-STD-810-F
  • Vibration: MIL-STD-810-F
  • Relative Humidity: 5% to 95% RH
  • Load-free reflow solder process:
    • SMD type only: IPC J-STD-020E
    • SMD type only: IPC J-STD-033C, Level 2

PHYSICAL SPECIFICATIONS

    • Design Meet Safety Standard: EN/IEC/ANSI/AAMI ES60601-1, UL:E360199, EN/IEC/UL 60950-1, 62368-1, UL:E193009, CB:UL(Demko)
    • Case Material: Non-conductive black plastic
    • Base Material: Non-conductive black plastic
    • Potting Material: Silicone, (UL94 V-0)
    • Weight: 60g (2.11oz)
    • Dimensions:
      • 0.95” × 0.57” × 0.40” (24.3 × 14.4 × 10.2 mm), SMD Type
      • 0.95” × 0.57” × 0.41”(24.3 × 14.4 × 10.5 mm), DIP Type
    • Weight: 7g (0.24oz)
    • MTBF: 6.809 × 106 hrs, MIL-HDBK-217F, Full load

EMC SPECIFICATIONS

  • EMI: EN55011, EN55032 and FCC Part 18, With external components, Class A, Class B
  • ESD: EN61000-4-2, Air ±15KV and Contact ±8KV, Perf. Criteria A
  • Radiated immunity: EN61000-4-3, 10V/m, Perf. Criteria A
  • Fast Transient: EN61000-4-4, ±2KV, Perf. Criteria A
  • Surge: EN61000-4-5, ±1KV, Perf. Criteria A
  • Conducted Immunity: EN61000-4-6, 10 Vr.m.s, Perf. Criteria A
  • Power Frequency Magnetic Field: EN61000-4-8, 100 A/m continuous; 1000 A/m 1 second, Perf. Criteria A
Input Range
(Vdc)
Output Voltage
(Vdc)
Output Current at Full Load
(mA)
Input Current at No Load
(mA)
Efficiency
(%)
Max. Capacitor Load
(μF)
Model Number
4.5 - 12 3.3 600 60 75 1000 MTWA2-5S33
4.5 - 12 5 400 60 78 1000 MTWA2-5S5
4.5 - 12 9 222 60 78 430 MTWA2-5S9
4.5 - 12 12 167 70 82 220 MTWA2-5S12
4.5 - 12 15 134 80 82 170 MTWA2-5S15
4.5 - 12 24 83 80 82 100 MTWA2-5S24
9 - 18 3.3 600 30 76 1000 MTWA2-12S33
9 - 18 5 400 40 78 1000 MTWA2-12S5
9 - 18 9 222 40 79 430 MTWA2-12S9
9 - 18 12 167 40 82 220 MTWA2-12S12
9 - 18 15 134 45 82 170 MTWA2-12S15
9 - 18 24 83 45 81 100 MTWA2-12S24
18 - 36 3.3 600 20 76 1000 MTWA2-24S33
18 - 36 5 400 20 79 1000 MTWA2-24S5
18 - 36 9 222 25 80 430 MTWA2-24S9
18 - 36 12 167 25 81 220 MTWA2-24S12
18 - 36 15 134 25 81 170 MTWA2-24S15
18 - 36 24 83 25 81 100 MTWA2-24S24
36 - 75 3.3 600 10 76 1000 MTWA2-48S33
36 - 75 5 400 10  78  1000  MTWA2-48S5
36 - 75 9 222 12  79  430  MTWA2-48S9
36 - 75 12 167  12  80 220  MTWA2-48S12
36 - 75 15 134 12  82  170  MTWA2-48S15
36 - 75 24 83 12  81  100  MTWA2-48S24
4.5 - 12 ±12 ±83 80 82 ±170 MTWA2-5-12
4.5 - 12 ±15 ±67 90  80  ±100 MTWA2-5-15
9 - 18 ±12 ±83 45 81 ±170 MTWA2-12-12
9 - 18 ±15 ±67 45 81 ±100 MTWA2-12-15
18 - 36 ±12 ±83 25 81 ±170 MTWA2-24-12
18 - 36 ±15 ±67 25 81 ±100 MTWA2-24-15
36 - 75 ±12 ±83 12 81 ±170 MTWA2-48-12
36 - 75 ±15 ±67 12 81 ±100 MTWA2-48-15