首頁 電源管理 AC/DC 切換穩壓器 AC/DC 控制器
首頁
電源管理
AC/DC 切換穩壓器
AC/DC 控制器

UCC28951

現行

具 SR 控制且適用寬輸入電壓範圍的綠色相移全橋控制器

立即訂購
產品規格表

UCC28951

現行
產品規格表 立即訂購

產品詳細資料

Topology Phase-shifted full bridge Control mode Current, Peak current mode, Voltage Features Adjustable switching frequency, Current limiting, Enable/Shutdown, Error amplifier, Green mode, Light-load efficiency, Programmable slope compensation, Soft start, Soft switching, Synchronization pin, Thermal shutdown Duty cycle (max) (%) 97
Topology Phase-shifted full bridge Control mode Current, Peak current mode, Voltage Features Adjustable switching frequency, Current limiting, Enable/Shutdown, Error amplifier, Green mode, Light-load efficiency, Programmable slope compensation, Soft start, Soft switching, Synchronization pin, Thermal shutdown Duty cycle (max) (%) 97
TSSOP (PW) 24 49.92 mm² (7.8 mm × 6.4 mm)
  • Enhanced zero-voltage switching (ZVS) range
  • Direct synchronous rectifier (SR) control
  • Light-load efficiency management including:
    • Burst mode operation
    • Discontinuous conduction mode (DCM), dynamic SR on/off control
  • Average- or peak-current mode control with programmable slope compensation and voltage-mode control
  • Closed-loop soft-start and enable function
  • Programmable switching frequency up to 1 MHz with bidirectional synchronization
  • (±3%) cycle-by-cycle current limit protection with hiccup mode support
  • 150µA start-up current
  • VDD undervoltage lockout
  • Wide temperature range: –40°C to +125°C
  • Enhanced zero-voltage switching (ZVS) range
  • Direct synchronous rectifier (SR) control
  • Light-load efficiency management including:
    • Burst mode operation
    • Discontinuous conduction mode (DCM), dynamic SR on/off control
  • Average- or peak-current mode control with programmable slope compensation and voltage-mode control
  • Closed-loop soft-start and enable function
  • Programmable switching frequency up to 1 MHz with bidirectional synchronization
  • (±3%) cycle-by-cycle current limit protection with hiccup mode support
  • 150µA start-up current
  • VDD undervoltage lockout
  • Wide temperature range: –40°C to +125°C

The UCC28951 controller is an enhanced version of the UCC28950. It is a fully compatible drop-in replacement for the UCC28950. The UCC2895x devices use advanced control of the full-bridge in addition to active control of the synchronous rectifier (SR) output stage.

ZVS operation ensured over a wide range of operating conditions, while the load current naturally tunes the switching delays of the secondary-side synchronous rectifiers(SR). This functionality maximizes overall system efficiency.

Easily get started with the UCC2895x 600W phase shifted full bridge design review/application note,

The 24-pin, TSSOP package complies with RoHS requirements.

The UCC28951 controller is an enhanced version of the UCC28950. It is a fully compatible drop-in replacement for the UCC28950. The UCC2895x devices use advanced control of the full-bridge in addition to active control of the synchronous rectifier (SR) output stage.

ZVS operation ensured over a wide range of operating conditions, while the load current naturally tunes the switching delays of the secondary-side synchronous rectifiers(SR). This functionality maximizes overall system efficiency.

Easily get started with the UCC2895x 600W phase shifted full bridge design review/application note,

The 24-pin, TSSOP package complies with RoHS requirements.
filter 尋找其它 AC/DC 控制器
下載 觀看有字幕稿的影片 影片

技術文件

找不到結果。請清除您的搜尋條件，然後再試一次。
檢視所有 5
重要文件 類型 標題 格式選項 下載最新的英文版本 日期
* 資料表 UCC2895x Phase-Shifted Full-Bridge Controller for Wide-Input Voltage Range Applications datasheet (Rev. B) PDF | HTML 2024/10/17
應用說明 UCC28950 600W Phase Shifted Full Bridge Design Review/Application Report (Rev. D) PDF | HTML 2022/3/4
應用說明 Making the Correct Choice: UCC28950-Q1 or UCC28951-Q1 2017/11/13
更多文件說明 Design review of a 2-kW parallelable power supply module 2016/8/17
更多文件說明 Design review of a 2-kW parallelable power supply module (PPT) 2016/8/17

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

UCC27714EVM-551 — UCC27714 600W 相移全橋轉換器評估模組

此 600W EVM 旨在展示如何在相移全橋轉換器中運用 UCC28950 控制 IC、UCC27524A 及 UCC27714 閘極驅動器，並於 50% 到 100% 負載實現 ZVS。

使用指南: PDF
支援產品和硬體
有庫存
限制：
??asset.out-of-stock-ti_zh_TW??
無法提供
模擬型號

UCC28950 and UCC28951 PSpice Transient Model (Rev. C)

SLUM169C.ZIP (168 KB) - PSpice 模型
支援產品和硬體
模擬型號

UCC28950 and UCC28951 TINA-TI Startup Reference Design (Rev. A)

SLUM276A.TSC (738 KB) - TINA-TI 參考設計
支援產品和硬體
模擬型號

UCC28950 and UCC28951 TINA-TI Steady State Reference Design (Rev. A)

SLUM277A.TSC (739 KB) - TINA-TI 參考設計
支援產品和硬體
計算工具

SLUC222 — UCC2895x Excel 設計工具

Excel based calculator to design a PSFB power supply
支援產品和硬體
參考設計

PMP8740 — 具有 92% 全負載效率的 2-kW 工業用交流/直流電池充電器參考設計

此參考設計為可設為標準電源供應器或電池充電器的模組。最大電流為 62.5A 時，輸出電壓範圍從 0V 至 32V。 其中包含四個電路板，一個升壓 PFC，一個相移全橋接器，一個小型子板（託管微控制器），以及一個具三個 LED 和四個按鈕的顯示電路板。輸入電壓範圍為通用：90VAC 至 264VAC 且輸入電流限制為 10Arms，可將輸入功率限制在 200VAC 以下。微控制器將電源供應器介接至運算子並控制所有功能，包括啟用和關閉 PFC 和 DC/DC 級，設定不同輸出電壓位準和充電電流限制。
支援產品和硬體
封裝 針腳 CAD 符號、佔位空間與 3D 模型
TSSOP (PW) 24 Ultra Librarian
適用 TI 的評估品項標準條款與條件。

訂購與品質

建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。

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