Overview

Isolated Converters

24 V and 48 V Input, Single and Dual Output Isolated DC-DC Converters for Telecom/Network Applications

Single and dual output isolated converters are composed of next-generation, board-mountable, isolated, fixed switching frequency DC-DC converters that use synchronous rectification to achieve extremely high power conversion efficiency. The power dissipated by the converter is so low that a heatsink is not required, which saves cost, weight, height, and application effort. All of the power and control components are mounted to the multi-layer PCB substrate.

Operational Features

  • Ultra-high efficiency up to 97%
  • Withstand up to 100 V, 100 ms input voltage transient (PQ60, PQ40 models only)
  • Fixed frequency switching, low output noise
  • No minimum load requirement (except PQ60525HTA04)
  • Full Feature optional on some models
  • Wide input voltage ranges:
    • 18-36 V (PQ24)
    • 18-60 V (PQ30)
    • 18-75 V (PQ40)
    • 35-75 V (PQ48, PQ60, DQ6)
    • 44-52 V (PQ50)
    • 38-55 V (PQ55)
    • 40-75 V (PQ65)

General Specifications

  • Operating Temperature -40ºC to +100ºC
  • Output Voltage Set Point ±1.0% to 1.5%
  • Output Voltage Ripple <1% of Vout (typ.) pk-pk
  • Input Ref. Ripple Current <1% of Iin (typ.) rms
  • Switching Frequency 200 - 300 kHz
  • Isolation Voltage Up to 2250 Vdc
  • Industry standard pin-out configurations and standard footprints
  • Output Voltage Trim Range +10% to -20%
    • Sixteenth Brick +10% to -10%
    • Half Brick Zeta +10% to -50%

Protection/Control Features

  • Input under-voltage lockout (UVLO)
  • Output current limit (OCP) and short circuit protection
  • Output over-voltage protection (OVP)
  • Thermal shutdown (OTP)
  • Back-drive protection (starts into pre-biased load)
  • On/Off control referenced to input side (Fully isolated for Full Bricks)
  • Remote sense
  • Output voltage trim (industry std. trim equations)
  • Digital Output Current Sharing (HZ only)

Baseplage Addenda

These technical addenda contain additional specifications for baseplated versions of Telecom converters. These units are manufactured by adding industry standard size baseplates to non-baseplated converters using standard mounting techniques. The baseplated versions allow for optional heatsinking in severe thermal environments or for mounting to a cold plate. Please refer to specific product datasheets for all specifications not included in these addenda.