AVO100-48S28 Series

100 Watt Isolated DC-DC Converters for RF Applications

The AVO100-48S28 series isolated DC-DC converter is designed specifically to provide the main 28 Vdc supply for RF power amplifiers in small-cell, low power telecommunications applications.

The converter accepts a wide range input of 36 to 75 Vdc and provides a low noise regulated 28 Vdc output that is capable of delivering up to 3.57 amps. Rated at 100 watts, it can operate over an ambient temperature range of -40 to 85˚C, continuing to deliver full power up to a baseplate temperature of 100˚C. The output voltage can be trimmed from 18 to 32.5 Vdc to meet a broad range of application needs and there is no minimum load requirement. The converter uses 280 kHz fixed-frequency switching and complies with the international EN55022 Class A standard for conducted and radiated EMI.

Based on a high power density open-frame design that can incorporate an optional thermal baseplate, the AVO100-48S28 series converter has an industry standard eighth-brick footprint and pin-out, with an installed height of just 0.5 inch (12.7 mm). It has a high full load conversion efficiency of 92% and a thermally optimized layout that is suitable for either conduction or forced air cooling. Standard features include differential remote sense and remote On/Off, as well as comprehensive protection against overcurrent, overvoltage and overtemperature conditions.

Datasheet Brochures Application Solution Brief Press Releases Technical Documentation Print This Page
  • Total Max Power:
    100 W
  • Total Max Current:
    3.6 A
  • Input Voltage:
    36 V to 75 V
  • Output Voltage:
    18 V to 32.5 V
  • Outputs:
  • Size (L x W x H):
    2.280" x 0.900" x 0.394"
  • Warranty:
    2 years
  • Operating Temperature:
    -40°C to +85°C

Electrical Specifications

  • Input
  • Output
  • Logic Control
  • Isolation
  • Other
  • Input voltage : 36 to 75Vdc
  • Output voltage: 28V
  • Output current: 3.57A
  • Enable polarity: Positive or Negative enable
  • Isolation: 1500Vdc
  • Insulation: Basic Insulation
  • Mechanical construction: Baseplate or Openframe
  • Termination : through-hole mounted
  • - Wide input range
  • - Optimised for contact cooling
  • - Low ripple and noise
  • - Fixed switching frequency
  • - High capacitive load capability
  • - Pre-bias start-up capability
  • - Basic insulation system
  • - Output voltage remote sense
  • - Through hole termination
  • - Open frame or baseplate construction

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