NCP43080DMNTWG

The NCP43080DMNTWG is a synchronous rectifier controller in 8 pin DFN package. This synchronous rectifier controller for switch mode power supplies. The controller enables high efficiency designs for flyback and quasi resonant flyback topologies. Externally adjustable minimum of-time and on-time blanking periods provides flexibility to drive various MOSFET package types and PCB layout. A reliable and noise less operation of the SR system is insured due to the self synchronization feature. It also utilizes Kelvin connection of driver to MOSFET to achieve high efficiency operation at full load and utilizes 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. The high accuracy driver and 5V gate clamp make it ideally suited for directly driving GaN devices.

• Operating voltage range up to VCC = 35V
• Adaptive gate drive clamp
• Self contained control of rectifier in CCM, DCM and QR for flyback, forward or LLC applications
• Precise true secondary zero current detection
• Rugged current sense pin (up to 150V)
• Adjustable min on-time, adjustable min off-time with ringing detection
• Adjustable max on-time for CCM controlling of primary QR controller
• 8A/4A peak current sink / source drive capability, automatic light-load & disable mode
• Low start-up and disable current consumption, improved robust self synchronization capability
• Maximum operation frequency up to 1MHz

Applications

Power Management, Industrial, Portable Devices