NCP4306DADZZBASNT1G

The NCP4306DADZZBASNT1G from ON Semiconductor is a sophisticated switching controller designed for secondary-side synchronous rectification in high-efficiency switch mode power supplies (SMPS). It is engineered to control a synchronous rectification MOSFET, enabling improved efficiency across various topologies including DCM, CCM flyback, quasi-resonant flyback, forward, and half-bridge resonant LLC.

Key features include precise zero current detection, a fast turn-off delay of typically 15 ns, and a rugged current sense pin rated up to 200 V. The device supports adjustable or fixed minimum ON-time and OFF-time with ringing detection, enhancing operational stability. Its 7 A / 2 A peak current sink/source drive capability and 5 V gate clamp make it suitable for driving GaN transistors. The operating voltage range extends up to 35 V, with automatic light-load disable mode for efficiency at lower power levels.

This controller is available in a 6-TSOP package, designed for surface mount applications. Its robust self-synchronization capability ensures reliable and noise-less operation of the SR system. The NCP4306DADZZBASNT1G is ideal for applications requiring high efficiency, such as notebook adapters, high power density AC/DC power supplies, and LCD TVs.