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Analog Devices Inc. ADP1074 Isolated Synchronous Forward Controllers

Analog Devices Inc. ADP1074 Isolated Synchronous Forward Controllers is a current mode, fixed frequency, active clamp device for isolated DC to 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

  • A 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 drivers for synchronous rectification
  • Integrated error amplifier and <1% accurate reference voltage
  • Programmable slope compensation
  • Programmable Frequency range: 50kHz to 600kHz typical
  • 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, and overtemperature protection
    • Cycle-by-cycle input overcurrent protection
  • A precision enable UVLO with hysteresis
  • Remote (secondary side) shutdown/reset function
  • Safety and regulatory approvals (pending)
    • UL recognition
      • 5000V rms for 1 minute per UL 1577 (for wide-body SOIC package)
      • 3000V rms 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 = 849 V peak (for wide-body SOIC package)
      • VIORM = 560 V 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-to-dc power conversion
  • Intermediate bus voltage generation
  • Telecom, industrial
  • Base station and antenna RF power
  • Power modules
  • Small cell
    • PoE powered device
  • Enterprise switches/routers
  • Core/edge/metro/optical routing

Block Diagram

Block Diagram - Analog Devices Inc. ADP1074 Isolated Synchronous Forward Controllers
Zveřejněno: 2020-09-08 | Aktualizováno: 2022-03-11