![]() ![]() ![]() Further reducing component count, the cycle-by-cycle current limit is realized without the need for a Hall Effect sensor. ![]() Just a few simple components are required externally to realize a fully-featured totem pole PFC, thereby saving space and component cost. With 230 Vac mains input, PFC circuits based upon the NCP1680 are capable of achieving close to 99% efficiency at 300 W. The highly integrated device can enable power supply designs for telecom 5G, industrial and high performance computing, that operate with universal mains (90 – 265 Vac) at recommended power levels up to 350 W. Modern efficiency standards, including those that require high efficiency at light load, can also be met due to inbuilt discontinuous conduction mode (DCM) with valley synchronized turn-on during frequency fold back operation. This uses a constant on-time CrM architecture with valley switching. The NCP1680 can accommodate any switch type whether it is super junction silicon MOSFET or Wide Bandgap switches such as Silicon Carbide (SiC) or Gallium Nitride (GaN) devices.Īt the heart of the controller is an internally compensated digital loop control. ![]()
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