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onsemi NCP4307 Side Synchronous Rectification Drivers

onsemi NCP4307 Side Synchronous Rectification Drivers offer high performance and are tailored to control a synchronous rectification MOSFET. The onsemi NCP4307 is ideal for switch-mode power supplies. The drivers have various topologies like DCM or CCM flyback, quasi-resonant flyback, and forward. Internal minimum off−time and on−time blanking periods help to fight the ringing induced by the PCB layout and other parasitic elements.

Features

  • Self-contained control of synchronous rectifier in CCM, DCM, and QR for flyback applications
  • Precise true secondary zero current detection
  • Typically 15ns turn off delay from current sense input to the driver
  • Rugged current sense pin (up to 200V)
  • Self-supply capability in case of high-side operation or low VOUT
  • Ultrafast turn-off trigger interface/disable input (10.5ns)
  • Internal minimum ON-time with reverse current protection
  • Internal minimum OFF-time with ringing detection
  • Improved robust self-synchronization capability
  • 7A/2A peak current sink/source drive capability
  • Operating voltage range up to VCC = 35V
  • Automatic light-load disable mode
  • High-side operation capability without external components or auxiliary winding
  • Two VCC pins option allows optimizing power consumption in wide VOUT range applications
  • Low startup and disable current consumption
  • TSOP6 package
  • These are Pb-free devices

Applications

  • Notebook adapters
  • High power density AC/DC power supplies (cell phone chargers)
  • LCD TVs
  • All SMPS with high-efficiency requirements

Block Diagram

onsemi NCP4307 Side Synchronous Rectification Drivers
Yayınlandı: 2022-11-10 | Güncellenmiş: 2023-08-08