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AVQ400 Series


396 W Quarter-Brick Isolated DC-DC Converters

The AVQ400 series of 396 W quarter-brick isolated DC-DC converters produce a low-noise 12 VDC output and deliver up to 33 A from a wide 2:1 input range of 36 to 75 VDC. Designed mainly for standard 48 V telecom equipment supplies, these converters feed downstream non-isolated point-of-load (POL) converters in systems with distributed power architectures (DPAs).

Operating over a wide ambient temperature range (-40 to 85˚C) and a typical efficiency of 95%, the converters’ open-frame design and aluminum base plate option allow forced air or conduction cooling and enhanced thermal performance. At just 0.37 inch high installed, the converters are ideal for systems with demanding inter-board spacing requirements.

To minimize external EMI filtering, the converters switch at a fixed frequency. Features include remote enable, non-latching overvoltage, and overtemperature protection.


  • RoHS 6 compliant
  • Ultrahigh efficiency 93% type at full load
  • Up to 33A output current
  • Wide input range: 36V ~ 75V
  • Output Voltage 12 VDC
  • Output Current 33 A
  • Isolation Voltage 1500 VDC


  • Basic insulation
  • Excellent thermal performance
  • Fully regulated bus converter
  • High power density
  • Improved thermal performance
  • Low output noise
  • No minimum load requirement
  • Enable Positive or negative enable
  • insulation Basic insulation
  • Mechanical Baseplate or open-frame


Output Power (W): 400
Length (Inches): 2.28
Width (Inches): 1.45
Height (Inches): 0.5
Mounting Type: BMP; Through Hole
Minimum Output Current (A): 0
Maximum Output Current (A): 33
Output Voltage Range (V): 0V to 12V
All Specifications Collapse Specifications

Stock Check

Model Number
Min. Voltage (V) Max. Voltage (V) Current (A) Nominal Voltage (V) Number of Outputs Samples Buy
AVQ400-48S12B-6L Active, In Stock 0 12 33 0 1 Request Buy

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