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VMS-20-5 - CUI Inc.

Description: Switching Power Supplies Internal AC-DC Power Supplies

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PCB Footprints
VMS-20-5 - CUI Inc. PCB footprint - Other - Other - VMS-20-5-1
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3D Models
VMS-20-5 - CUI Inc.  - 3D model - Other - VMS-20-5-1
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VMS-20-5 Details

  • Manufacturer Part Number:

    VMS-20-5

  • Brand Name:

    CUI Inc

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Transferred

  • Package Description:

    PACKAGE-4

  • ECCN Code:

    EAR99

  • Manufacturer:

    CUI Inc

  • YTEOL:

    7.4

  • Analog IC - Other Type:

    AC-DC REGULATED POWER SUPPLY MODULE

  • Approvals:

    CE, TUV, UL

  • Efficiency (Main Output):

    80%

  • Input Voltage-Max:

    264 V

  • Input Voltage-Min:

    90 V

  • Input Voltage-Nom:

    115 V

  • JESD-30 Code:

    R-XDMA-P4

  • Length:

    60.5 mm

  • Line Regulation-Max:

    0.5%

  • Load Regulation-Max:

    1%

  • Number of Functions:

    1

  • Number of Outputs:

    1

  • Number of Terminals:

    4

  • Operating Temperature-Max:

    60 °C

  • Operating Temperature-Min:

    -25 °C

  • Output Current-Max:

    4 A

  • Output Voltage-Nom:

    5 V

  • Package Body Material:

    UNSPECIFIED

  • Package Code:

    DMA

  • Package Shape:

    RECTANGULAR

  • Package Style:

    MICROELECTRONIC ASSEMBLY

  • Peak Reflow Temperature (Cel):

    NOT SPECIFIED

  • Protections:

    OUTPUT OVER CURRENT; OUTPUT OVER VOLTAGE

  • Ripple Voltage (Main Out):

    0.01768 Vrms

  • Seated Height-Max:

    20.4 mm

  • Surface Mount:

    NO

  • Technology:

    HYBRID

  • Temperature Grade:

    OTHER

  • Terminal Form:

    PIN/PEG

  • Terminal Position:

    DUAL

  • Time@Peak Reflow Temperature-Max (s):

    NOT SPECIFIED

  • Total Power Output-Max:

    20 W

  • Trim/Adjustable Output:

    NO

  • Width:

    40.6 mm

VMS-20-5 Frequently Asked Questions (FAQs)

  • CUI recommends a PCB layout with a large copper area for heat dissipation, and a minimum of 2 oz copper thickness. A thermal via array under the module can also improve heat dissipation.
  • To ensure reliable start-up, CUI recommends a soft-start circuit to limit inrush current, and a minimum input capacitance of 10uF to ensure stable output voltage.
  • The maximum allowable capacitance on the output is 220uF. Exceeding this value may cause instability or oscillation.
  • While the VMS-20-5 is rated for operation up to 85°C, CUI recommends derating the output power by 2.5% per degree above 70°C to ensure reliable operation.
  • To troubleshoot output voltage deviations, check the input voltage, output load, and PCB layout for thermal issues. Verify that the output capacitor is within the recommended range and that the module is properly soldered.

Trust Checks

This model has been built in collaboration with the manufacturer.
Manufacturer Collaborated
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System Verified
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VMS-20-5 Overview

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