PFC & LLC

Achieve higher effiency, reduce THD, and improve power density with our PFC and LLC controllers

Zero-voltage switching, noise immunity, optimized load performance

Paired together, our PFC and LLC controllers offer best in class performance for power rsupplies ranging from 100W to 2-kW. With features like zero-voltage switching, low EMI, high FSW capability, and optomized load performance, LLC controllers offer excellent audible noise immunity while delivering integarted features to simplify system designs. Our PFC controller portfolio delivers the highest efficiency, reduced standby, superiour power factor, and improved distortion which meet challenging standards for switch-mode power supplies (SMPS).

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Design & development resources

開發板

UCC25660 評估模組

UCC25660EVM-064 可協助設計人員評估 UCC25660 LLC 全橋式控制器的運作及性能。此評估模組 (EVM) 展示了 UCC25660 如何控制 LLC 全橋式半橋 DC/DC 轉換器，從而在整個負載和輸入電壓範圍內實現高效率。此 EVM 可接受 365V 至 410V 的 DC 輸入、85VAC 至 264VAC 的 AC 輸入電壓，並輸出 12VDC 和 180W 滿載輸出功率。

參考設計

180-W 通用輸入 PFC + LLC TV 電源供應參考設計

This AC to DC power supply design for TV application provides 12-V, 5-A and 150-V, 0.8-A output from universal AC voltage (90 Vac to 264 Vac). The design uses CRM/DCM PFC controller UCC28056, and LLC controller UCC256404 with enhanced burst mode which enabled for low standby power and smaller (...)

開發板

具有 UCC28056B、UCC256404 和 UCC24624 的 AC 至隔離式 DC EVM

PFCLLCSREVM034 is a 168-W AC/DC supply with a transition-mode power-factor-correction front end and isolated half-bridge LLC resonant converter with synchronous rectification. This EVM accepts AC input from 90 Vrms to 264 Vrms and outputs 12-V DC with 168-W full-load output power.

技術資源

影片

Implementation of wide output LLC in power tool charging and LED lighting applications

This video session will cover practical implementations and design considerations of achieving a variable output voltage using LLC.

Application note

Improving Transient Response in LLC Converters Using Hybrid Hysteretic Control (Rev. B)

Learn how an innovative LLC control methodology, hybrid hysteretic control (HHC) offers superior transient performance and an simplified LLC power stage.

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影片系列

Power factor correction (PFC) basics and design considerations

This video series discusses PFC basics, topology comparisons, and design considerations to achieve a cost-optomizeda and efficienct PFC design.