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 V_OUT
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 V_CC = 35V
Automatic light-load disable mode
High-side operation capability without external components or auxiliary winding
Two V_CCpins option allows optimizing power consumption in wide V_OUT 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

onsemi NCP4307 Side Synchronous Rectification Drivers

Features

Applications

Block Diagram

husseinkey ELECTRONICS®

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