NCP4307 Datasheet | onsemi

DATA SHEET .onsemi. Secondary Side Synchronous Rectification Driver for High Efficiency SMPS Topologies TSOP- 6 SN SUFFIX CASE 318G- 02 The NCP4307 is high performance driver tailored to control a synchronous rectification MOSFET in switch mode power supplies. Thanks to its high performance drivers and versatility, it can be used in various topologies such as 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. A reliable and noise less operation of the SR system is ensured due to the Self Synchronization feature. The NCP4307 also utilizes Kelvin connection of the driver to the MOSFET to achieve high efficiency operation at full load and utilizes a light load detection architecture to achieve high efficiency at light load. The precise turn- off threshold, extremely low turn- off delay time and high sink current capability of the driver allow the maximum synchronous rectification MOSFET conduction time and enables maximum SMPS efficiency. Self- supply capability allows to use NCP4307 in high side configuration and/or in low output voltage SMPS without auxiliary winding or other power source. MARKING DIAGRAM XXXAYWG G XXX A Y W = Specific Device Code = Assembly Location = Year = Work Week ORDERING INFORMATION See detailed ordering and shipping information on page 2 of this data sheet. Features - Self- Contained Control of Synchronous Rectifier in CCM, DCM and QR for Flyback Applications - Precise True Secondary Zero Current Detection - Typically 15 ns Turn off Delay from Current Sense Input to Driver - Rugged Current Sense Pin (up to 200 V) - Self- Supply Capability in Case of High Side Operation or Low VOUT - Ultrafast Turn- off Trigger Interface/Disable Input (10.5 ns) - Internal Minimum ON- Time With Reverse Current Protection - Internal Minimum OFF- Time with Ringing Detection - Improved Robust Self...