首頁 電源管理 AC/DC 和 DC/DC 控制器 (外部 FET)
首頁
電源管理
AC/DC 和 DC/DC 控制器 (外部 FET)

UCC24624

現行

適用於 LLC 轉換器的高頻雙同步整流控制器

立即訂購
產品規格表

UCC24624

現行
產品規格表 立即訂購

產品詳細資料

Vin (max) (V) 26 Operating temperature range (°C) -40 to 125 Control mode VDS sensing Topology LLC Rating Catalog Features Automatic Standby Mode, Dual Channel, Proportional gate drive, Synchronous Rectifier, USB C/PD compatible
Vin (max) (V) 26 Operating temperature range (°C) -40 to 125 Control mode VDS sensing Topology LLC Rating Catalog Features Automatic Standby Mode, Dual Channel, Proportional gate drive, Synchronous Rectifier, USB C/PD compatible
SOIC (D) 8 29.4 mm² 4.9 x 6
  • 230-V VD pins rating
  • 23-ns turn-off delay to support LLC operating above resonant frequency and up to 625-kHz switching frequency
  • Proportional gate drive to extend the SR conduction time
  • Adjustable turn-off threshold for minimum body diode conduction
  • Automatic standby mode detection with 180 µA of low standby current
  • Wide 4.25-V to 26-V VDD operation range with internal clamp
  • Adaptive turn-on delay for better DCM ring rejection
  • Two-channel interlock to prevent shoot-through
  • Integrated 1.5-A source and 4-A sink capability gate driver for N-channel MOSFETs
  • 8-pin SOIC package
  • 230-V VD pins rating
  • 23-ns turn-off delay to support LLC operating above resonant frequency and up to 625-kHz switching frequency
  • Proportional gate drive to extend the SR conduction time
  • Adjustable turn-off threshold for minimum body diode conduction
  • Automatic standby mode detection with 180 µA of low standby current
  • Wide 4.25-V to 26-V VDD operation range with internal clamp
  • Adaptive turn-on delay for better DCM ring rejection
  • Two-channel interlock to prevent shoot-through
  • Integrated 1.5-A source and 4-A sink capability gate driver for N-channel MOSFETs
  • 8-pin SOIC package

The UCC24624 high-performance synchronous rectifier (SR) controller is dedicated for LLC resonant converters to replace the lossy diode output rectifiers with SR MOSFETs and improve the overall system efficiency.

The UCC24624 SR controller uses drain-to-source voltage sensing method to achieve on and off control of the SR MOSFET. Proportional gate drive is implemented to extend the SR conduction time, minimize the body diode conduction time. To compensate for the offset voltage caused by the SR MOSFET parasitic inductance, the UCC24624 implements an adjustable positive turn-off threshold to accommodate different SR MOSFET packages. UCC24624 has a built-in 475-ns on-time blanking and a fixed 650-ns off-time blanking to avoid SR false turn-on and turn-off. UCC24624 also integrates a two-channel interlock function that prevents the two SRs from being on at the same time. With 230-V voltage-sensing pins and 28-V ABS maximum VDD rating, it can be directly used in converters with output voltage up to 24.75 V. The internal clamp allows the controller to support 36-V output voltage easily by adding an external current limiting resistor on VDD.

space

The UCC24624 high-performance synchronous rectifier (SR) controller is dedicated for LLC resonant converters to replace the lossy diode output rectifiers with SR MOSFETs and improve the overall system efficiency.

The UCC24624 SR controller uses drain-to-source voltage sensing method to achieve on and off control of the SR MOSFET. Proportional gate drive is implemented to extend the SR conduction time, minimize the body diode conduction time. To compensate for the offset voltage caused by the SR MOSFET parasitic inductance, the UCC24624 implements an adjustable positive turn-off threshold to accommodate different SR MOSFET packages. UCC24624 has a built-in 475-ns on-time blanking and a fixed 650-ns off-time blanking to avoid SR false turn-on and turn-off. UCC24624 also integrates a two-channel interlock function that prevents the two SRs from being on at the same time. With 230-V voltage-sensing pins and 28-V ABS maximum VDD rating, it can be directly used in converters with output voltage up to 24.75 V. The internal clamp allows the controller to support 36-V output voltage easily by adding an external current limiting resistor on VDD.

space
filter 尋找其它 AC/DC 和 DC/DC 控制器 (外部 FET)
下載 觀看有字幕稿的影片 影片

技術文件

star =TI 所選的此產品重要文件
找不到結果。請清除您的搜尋條件，然後再試一次。
檢視所有 11
類型 標題 日期
* Data sheet UCC24624 Dual-Channel Synchronous Rectifier Controller for LLC Resonant Converters datasheet (Rev. C) PDF | HTML 2022年 2月 28日
White paper Optimizing a Synchronous Rectification Scheme in CLLLC PDF | HTML 2024年 7月 23日
Technical article 高頻共振轉換器設計考量，第 2 部分 PDF | HTML 2024年 3月 15日
Application note Configs of Secondary Rectifier Circuit for LLC Resonant Converter Using UCC24624 PDF | HTML 2021年 12月 21日
Application note Design Considerations With Dual-Channel SR Controller UCC24624 2020年 6月 4日
Technical article How to reduce audible noise and power consumption at standby in your AC/DC design PDF | HTML 2020年 4月 22日
EVM User's guide PFCLLCSREVM-034 User Guide 2019年 7月 26日
Technical article Three considerations for achieving high efficiency and reliability in industrial A PDF | HTML 2019年 4月 4日
EVM User's guide The UCC24624EVM-015 LLC Gate Driver Evaluation Module (Rev. A) 2018年 12月 4日
Application note Improving ZVS and efficiency in LLC converters 2018年 11月 5日
Application brief Boosting LLC Resonant Converter Efficiency by Using the UCC24624 2018年 10月 23日

設計與開發

如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。

開發板

PFCLLCSREVM034 — 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.

使用指南: PDF
TI.com 無法提供
子卡

UCC24624EVM — UCC24624 LLC 驅動器評估模組

The UCC24624EVM-015 evaluation module (EVM) is used to convert the output rectifier of a LLC converter from diodes to synchronous rectifiers (SR) FETs to investigate and evaluate the efficiency benefits of using an SR over a rectifier diode.
使用指南: PDF
TI.com 無法提供
模擬型號

UCC24624 SIMPLIS Model (Rev. A)

SLUM645A.ZIP (1115 KB) - SIMPLIS Model
下載
參考設計

TIDA-010080 — 用於 5G 電信整流器的 500-W >94.5% 效率類比控制 AC/DC 參考設計

這款精巧的高效率參考設計配備 48-V DC、500-W 輸出，專為 5G 電信電源與工業 AC/DC 電源供應器而設計。電路包含以 UCC28180 為基礎的前端連續導通模式 (CCM) 功率因數校正 (PFC) 電路，並提供穩固 LLC 階段，適合以 UCC256403 為基礎的隔離式 DC/DC 轉換器。為滿足高效率需求，UCC24624 可處理同步整流。此設計使用輔助電源返馳以及具有內部高電壓 MOSFET 的 UCC28911。此設計可實現 94.5% 的峰值效率，讓系統無需強制冷卻即可運作。整個系統具備低 iTHD，在 <12% 時提供 30% 負載、<8% 時 (...)
Design guide: PDF
電路圖: PDF
參考設計

TIDA-010081 — 用於 5G 電信整流器的 >95% 效率、1 kW 類比控制 AC/DC 參考設計

This compact, high efficiency reference design with a 54-V DC, 1000-W output targets 5G telecom power and industrial AC/DC power supplies. The circuit consists of a front-end continuous conduction mode (CCM) power factor correction (PFC) circuit based on the UCC28180, followed by a robust LLC (...)
Design guide: PDF
電路圖: PDF
參考設計

PMP21683 — 48-V/550-W 共振轉換器參考設計

This resonant converter reference design takes a 380-V to 420-V DC input and generates a 48-V up to 550-W output. With the UCC256302 driver-integrated resonant converter controller and UCC24624, a two-channel synchronous rectifier (SR) driver, this design can achieve 97.95% peak efficiency.
Test report: PDF
電路圖: PDF
封裝 針腳 CAD 符號、佔位空間與 3D 模型
SOIC (D) 8 Ultra Librarian
適用 TI 的評估品項標準條款與條件。

訂購與品質

內含資訊：
  • RoHS
  • REACH
  • 產品標記
  • 鉛塗層/球物料
  • MSL 等級/回焊峰值
  • MTBF/FIT 估算值
  • 材料內容
  • 認證摘要
  • 進行中持續性的可靠性監測
內含資訊：
  • 晶圓廠位置
  • 組裝地點

支援與培訓

內含 TI 工程師技術支援的 TI E2E™ 論壇

以英文檢視所有論壇主題

內容係由 TI 和社群貢獻者依「現狀」提供，且不構成 TI 規範。檢視使用條款。

若有關於品質、封裝或訂購 TI 產品的問題，請參閱 TI 支援。​​​​​​​​​​​​​​

影片