This application note describes a demonstration board based on the transition-mode PFC controller L6563S and presents the results of its bench evaluation. The board implements a 400 W, wide-range mains input, PFC pre-conditioner suitable for ATX PSU, flat screen displays, etc. The chip is operated with fixed off time control in order to use a low-cost device like the L6563S, which is usually proh…

The L6562A is a current-mode PFC controller operating in transition mode (TM). With the same pin-out as its predecessor L6562, the L6562A offers improved performance mainly in terms of efficiency and noise immunity.

The UCC28180EVM-573 evaluation module (EVM) is a 360-W off-line power factor correction (PFC) boost converter providing a nominal output voltage of 390-V regulated output at 0.923 A of load current. The PFC converter accommodates an input voltage range of 85 VAC to 265 VAC and uses average current mode control at a fixed programmable switching frequency of 120 kHz. The UCC28180 incorporates a wid…

The NCP1608 is a voltage mode power factor correction (PFC) controller designed to implement converters to comply with line current harmonic regulations. The device operates in critical conduction mode (CrM) for optimal performance in applications up to 350 W. Its voltage mode scheme enables it to obtain near unity power factor (PF) without the need for a line-sensing network. The output voltage …

The board implements a 400 W, wide-range mains input, PFC pre-conditioner suitable for ATX PSU, Flat screen displays, etc. To make possible the use of a low-cost device like the L6562A at this power level, usually prohibitive for TM PFC, the chip operates with Fixed-Off-Time control.

This application note describes a demonstration board based on the transition-mode PFC controller L6563H and presents the results of its bench demonstration. The board implements a 100 W, wide-range mains input, PFC pre-conditioner suitable for ballast, adapters, flatscreen displays, and all SMPS having to meet the IEC61000-3-2 or the JEITA-MITI regulation.

The NCP1654GEVB is a Power Factor Controller to efficiently drive Continuous Conduction Mode (CCM) step-up pre-converters. The NCP1654 allows operation in Follower Boost mode to drastically lower the pre-converter size and cost, in a straight-forward manner. The NCP1654 is a continuous conduction mode and fixed frequency controller (65kHz). The coil (650 uH) is selected to limit the peak to peak …

The TDTTP4000W065AN-0v1 4kW Analog bridge-less totem-pole power factor correction (PFC) evaluation board. Very high efficiency single-phase AC-DC conversion is achieved with the TP65H035WS, a diode-free Gallium Nitride (GaN) FET bridge with low reverse-recovery charge. Using Transphorm GaN FETs in the fast-switching leg of the circuit and low-resistance MOSFETs in the slow-switching leg of the circuit results in improved performance and efficiency.