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Polytron MWB40/B2A Series DC-DC Converters, 40 Watt Single and Dual Output, Isolated, 4:1 Wide Input Range


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DC-DC Converters Feature Miniature Package

Our MWB40 Series of isolated 4:1 wide input range 40-watt single- and dual-output DC-DC converters are housed in a miniature 2.0” x 2.0” x 0.4” package for space-constrained designs. This series offers high efficiency up to 89%, 1600 V dc isolation, and remote ON/OFF control for energy savings. MWB40 DC-DC converters meet IEC/UL/EN60950-1 standards, and built-in safeguards include over temperature, over current, over voltage, short circuit and under voltage protections. A six-sided continuous shield minimizes noise leakage. The units comply to RoHS and REACH, and they carry the CE Mark.

FEATURES:

  • 4:1 Wide Input Range 
  • Miniature Package: 2” × 2” × 0.4”
  • 1600Vdc Isolation Voltage 
  • Efficiency to 89% 
  • Six-Sided Shielding
  • Remote ON/OFF Control 
  • Over Current Protection 
  • Over Temperature Protection 
  • Over Voltage Protection 
  • Under Voltage Protection
  • Short Circuit Protection 
  • Safety Meets: IEC/UL/EN60950-1 
  • RoHS Compliant 
  • REACH Compliant 
  • CE Mark

MWB40/B2A Series Specification Sheet PDF

 

    Output Current      
Model
Number
Input Range
(Vdc)
Output Voltage
(Vdc)
Min. load
(mA)
Full load
(A)
Input Current at No Load
(mA)
Efficiency
(%)
Max. Capacitor Load
(μF)
Single Output
MWB40-24S33/B2A 9 - 36 3.3 0 10 75 87 25750
MWB40-24S5/B2A 9 - 36 5 0 8 95 88 13600
MWB40-24S12/B2A 9 - 36 12 50 3.33 50 87 2360
MWB40-24S15/B2A 9 - 36 15 50 2.67 50 87 1510
MWB40-48S33/B2A 18 - 75 3.3 0 10 55 87 25750
MWB40-48S5/B2A 18 - 75 5 0 8 60 89 13600
MWB40-48S12/B2A 18 - 75 12 50 3.33 30 87 2360
MWB40-48S15/B2A 18 - 75 15 50 2.67 25 88 1510
Dual Output
MWB40-24-12/B2A 9 - 36 ±12 ±65 ±1.67 60 86 ±1200
MWB40-24-15/B2A 9 - 36 ±15 ±50 ±1.33 70 86 ±750
MWB40-48-12/B2A 18 - 75 ±12 ±65 ±1.67 30 87 ±1200
MWB40-48-15/B2A 18 - 75 ±15 ±60 ±1.33 30 86 ±750



 

Input and Output Specifications:

INPUT

  • Operating Input Voltage Range:
    • 24Vin (nom): 9 Min., 24 Typ., 36 Max. Vdc
    • 48Vin (nom): 18 Min., 48 Typ., 75 Max. Vdc
  • Start Up Voltage:
    • 24Vin (nom): 9 Max. Vdc
    • 48Vin (nom): 18 Max. Vdc
  • Shutdown Voltage:
    • 24Vin (nom): 7 Min., 8 Typ., 8.8 Max. Vdc
    • 48Vin (nom): 15 Min., 16 Typ., 17.5 Max. Vdc
  • Start up time:
    • Constant Resistive Load
      • Power Up: 20 Typ. mS
      • Remote On/Off: 20 Typ. mS
  • Input Surge Voltage:Input Filter: Pi type
    • 24Vin (nom), 100 ms, Max.: 50 Max. Vdc
    • 48Vin (nom): 100 Max. Vdc
  • Input Filter: Pi type
  • Remote ON/OFF Control:
    • Referred to -Vin pin
      • Positive Logic DC-DC ON: Open or 3-12 Vdc
      • (Standard) DC-DC OFF: Short or 0-1.2 Vdc
      • Negative logic DC-DC ON: Short or 0 - 1.2 Vdc
      • (Option) DC-DC OFF: Open or 3 - 12 Vdc
      • Input current of Ctrl pin: -0.5 Min., 0.5 Max. Vdc
      • Remote OFF 24Vin(nom): 10 Typ. Vdc
      • Input current 48Vin(nom): 5 Typ. Vdc

OUTPUT

  • Voltage Accuracy: -1 Min., 1 Max. %
  • Line Regulation: -0.2 Min., 0.2 Max. %
  • Load Regulation
    • Min. load to full load, Single: -0.5 Min., 0.5 Max.
    • Min. load to full load, Dual: -1 Min., 1 Max.
  • Cross Regulation: Asymmetrical load 25%/100% FL, Dual, -5 Min., 5 Max %
  • Voltage Adjustability: -10 Min., 10 Max. %
  • Ripple and noise
    • 20MHz bandwidth
    • Single 3.3Vout, 5Vout: 50 Typ. mVp-p
    • Single, 12Vout, 15Vout: 75 Typ. mVp-p
    • Dual, 12Vout: 120 Typ. mVp-p
    • Dual, 15Vout: 150 Typ. mVp-p
  • Temperature Coefficient: -0.2 Min., 0.2 Max. %/°C
  • Transient Response Recovery Time: 25% load step change, 250 Typ. µS
  • Overvoltage Protection: Zener Diode Clamp
    • 3.3Vout: 3.9 Typ. Vdc
    • 5Vout: 6.2 Typ. Vdc
    • 12Vout: 15 Typ. Vdc
    • 15Vout: 18 Typ. Vdc
  • Over Load Protection: % of lout rated, 150 Max. %
  • Short Circuit Protection: Continuous, automatic recovery

More Specifications:

GENERAL

  • Isolation Voltage:Case Grounding: Connect case to -Vin with decoupling Y cap
    • Input to Output: 1600 Vdc, Min., 1 minute
    • Input (Output) to case: 1600 Vdc, Min.
  • Case Grounding: Connect case to -Vin with decoupling Y cap
  • Isolation Resistance: 1 Min., 500Vdc
  • Isolation Capacitance: 2500 pF, Max.
  • Switching Frequency: 270 Min., 300 Typ., 330 Max. kHz

ENVIRONMENTAL

  • Operating Ambient Temperature: 
    • Without derating, -40 Min., 50 Max. °C
    • With derating, 50 Min., 105 Max. °C
  • Case Temperature: 105 Max. °C
  • Over Temperature Protection: 110 Typ.. °C
  • Thermal Impedance: 
    • 9.2 Typ. °C without heat-sink
    • 7.6 Typ. °C with heat-sink
  • Thermal Shock: MIL-STD-810F
  • Vibration: MIL-STD-810F
  • Relative Humidity: 5% to 95% RH

 

PHYSICAL

  • Design Meet Safety Standard: IEC/UL/EN60950-1, UL:E193009, CB:UL(Demko)
  • Case Material: Nickel-coated copper
  • Base Material: FR4 PCB
  • Potting Material: Epoxy (UL94 V-0)
  • Weight: 60g (2.11oz)
  • Dimensions: 2” × 2” × 0.4” (50.8mm × 50.8mm × 10.2mm)
  • MTBF: 6.617 × 105 hrs , MIL-HDBK-217F, Full load

EMC

  • EMI: EN55032, With external components, Class A, Class B
  • ESD: EN61000-4-2, Air ±8kV and Contact ±6kV, Perf. Criteria A
  • Radiated Immunity: EN61000-4-3, 10V/m, Perf. Criteria A
  • Fast Transient: EN61000-4-4, ±2KV, With an external input filter capacitor (Nippon chemi-con KY series, 220 μF/100V), Perf. Criteria B
  • Surge: EN61000-4-5, ±1KV, With an external input filter capacitor (Nippon chemi-con KY series, 220 μF/100V), 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

 

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