UCC2895DWTR

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The UCC2895DWTR is an advanced power factor correction (PFC) controller family which is designed to work with most popular off-line PFC topologies. It provides a flexible, scalability and cost-effective design solution for mid- to high-power AC/DC systems including desktop PC and servers.

The UCC2895DWTR is also suitable for automotive applications where it operates between a 90-265V AC input and a DC output up to 350 vocals. It supports both full-wave bridge (FWB) and half bridge (HB) rectification topologies. The device contains a high-speed PFC converter, integrated dual-N channel MOSFET drivers and input over-voltage protection (MOV). It can also accept auxiliary winding and DC bias winding inputs to lower system BOM cost and offer higher power efficiency.

The UCC2895DWTR has a full range of features for power system design. It supports high-efficiency PFC control, supports phase shedding for both HB and FWB rectification, and has programmable Q for power system optimization. In addition, it provides adjustable feedback voltage for overclocking and overvoltage protection.

The UCC2895DWTR is designed to work with active power factor correction (PFC) topologies such as forward boost, LLC and bridgeless LLC. The device contains a high-speed PFC converter and integrated dual-N channel MOSFET drivers. It is designed to provide high efficiency and reliability to meet the needs of mid-power AC/DC applications.

The working principle of the UCC2895DWTR can be summarized as follows. The input voltage sensing circuit detects the peak voltage of the AC waveforms and generates a sampled wave that is then amplified. The input waveform is then compared with a fixed reference wave to generate an error signal. This error signal is then used to control the MOSFETs of the PFC converter to maintain a steady output voltage. The UCC2895DWTR also provides startup protection, overvoltage protection and enable/disable circuitry.

The UCC2895DWTR is an ideal solution for efficient AC/DC conversion applications such as PC, servers and automotive applications. Its features make it a suitable choice for applications that require high power efficiency and reliability even in harsh conditions. Its on-chip dual N-channel MOSFET drivers and integrated MOV provides high level of protection for the system, and its programmability allows for system optimization.

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