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Analog Devices Inc. ADP1074 Isolated Synchronous Forward Controllers

Analog Devices Inc. ADP1074 Isolated Synchronous Forward Controllers are current mode, fixed frequency, active clamp devices for isolated DC-DC power supplies. The ADP1074 features Analog Devices' proprietary iCouplers® to eliminate the bulky signal transformers and optocouplers that transmit signals over the isolation boundary. Integrating iCouplers reduces system design complexity, cost, component count, and improves overall system reliability. The ADP1074 offers a compact system-level design and yields a higher efficiency than a nonsynchronous forward converter at heavy loads.

Features

  • Current-mode controller for active clamp forward topology
  • Integrated 5kV (wide-body SOIC package) or 3.0kV (LGA package) rated dielectric isolation voltage with Analog Devices Inc. patented iCoupler technology
  • Wide voltage supply range
  • Primary VIN up to 60V
  • Secondary VDD2 up to 36V
  • Integrated 1A primary side MOSFET driver for power switch and active clamp reset switch
  • Integrated 1A secondary-side MOSFET driver for synchronous rectification
  • Integrated error amplifier and <1% accurate reference voltage
  • Programmable slope compensation
  • 50kHz to 600kHz typical programmable Frequency range
  • Frequency synchronization
  • Programmable maximum duty cycle limit
  • Programmable soft-start
  • Smooth soft start from precharged load
  • Programmable dead time
  • Power saving light load mode using MODE pin
  • PGOOD pin for system flagging
  • Tracking function from the secondary side
  • Protection features such as short circuit, output overvoltage, overtemperature, and cycle-by-cycle input overcurrent protection
  • Precision enable UVLO with hysteresis
  • Remote (secondary side) shutdown/reset function
  • Safety and regulatory approvals (pending)
    • UL recognition
      • 5000VRMS for 1 minute per UL 1577 (for wide-body SOIC package)
      • 3000VRMS for 1 minute per UL 1577 (for LGA package)
    • CSA component acceptance notice 5A
    • VDE certificate of conformity
      • DIN V VDE V 0884-10 (VDE V 0884-10):2006-12
      • VIORM = 849V peak (for wide-body SOIC package)
      • VIORM = 560V peak (for LGA package)
    • CQC certification per GB4943.1-2011
  • Available in 24-lead SOIC_W package and 24-terminal LGA package
  • AEC-Q100 qualified for automotive applications

Applications

  • Isolated DC-DC power conversion
  • Intermediate bus voltage generation
  • Telecom
  • Industrial
  • Base station and antenna RF power
  • Power modules
  • Small-cell PoE-powered devices
  • Enterprise switches/routers
  • Core/edge/metro/optical routing

Block Diagram

Block Diagram - Analog Devices Inc. ADP1074 Isolated Synchronous Forward Controllers
Published: 2020-09-08 | Updated: 2024-11-05