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UCC28950

現行

具有同步整流控制的環保全橋相移式轉換器控制器

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產品規格表

UCC28950

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, Voltage Features Adjustable switching frequency, Current limiting, Error amplifier, Light-load efficiency, SR logic, Soft start, Soft switching Duty cycle (max) (%) 95
Topology Phase-shifted full bridge Control mode Current, Voltage Features Adjustable switching frequency, Current limiting, Error amplifier, Light-load efficiency, SR logic, Soft start, Soft switching Duty cycle (max) (%) 95
TSSOP (PW) 24 49.92 mm² 7.8 x 6.4
  • 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.
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UCC28950-Q1 現行 具同步整流的車用 8V 至 20V 全橋式相位轉換 PWM 控制器 Automotive qualified version
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 This product can be designed for enhanced performance across a wider operating input voltage range.

技術文件

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重要文件 類型 標題 格式選項 日期
* Data sheet UCC2895x Phase-Shifted Full-Bridge Controller for Wide-Input Voltage Range Applications datasheet (Rev. B) PDF | HTML 2024年 10月 17日
Application note UCC28950 600W Phase Shifted Full Bridge Design Review/Application Report (Rev. D) PDF | HTML 2022年 3月 4日
Selection guide Power Management Guide 2018 (Rev. R) 2018年 6月 25日
Application note Gate Driver Design Considerations 2016年 10月 10日
Technical article Staying cool, efficiently PDF | HTML 2016年 8月 22日
More literature Design review of a 2-kW parallelable power supply module 2016年 8月 17日
More literature Design review of a 2-kW parallelable power supply module (PPT) 2016年 8月 17日
White paper Advancing Power Supply Solutions Through the Promise of GaN 2015年 2月 24日
More literature Design Review of a Full-Featured 350-W Offline Power Converter 2013年 10月 29日
Application note Frequency Dithering With the UCC28950 and TLV3201 2012年 5月 9日
Application note Synchronizing Three or More UCC28950 Phase-Shifted, Full-Bridge Controllers 2011年 9月 13日
Application note Pre-biased Output Voltage Startup Operation of the UCC28950 2011年 8月 1日
Analog Design Journal 3Q 2010 Issue Analog Applications Journal 2010年 8月 11日
Analog Design Journal Computing power going “Platinum” 2010年 8月 11日
More literature Seminar 800 Topic 5 - Fixed-Frequency Resonant-Switched PWM 2001年 2月 15日
More literature Seminar 900 Topic 3 - Designing a Phase-Shifted ZVT Power Converter 2001年 2月 15日
More literature Seminar 900 Topic 4 - 500-W 40-W/in3 Phase-Shifted ZVT Power Converter 2001年 2月 15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

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
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開發板

UCC28950EVM-442 — UCC28950 600W 相移全橋轉換器評估模組

UCC28950EVM-442 是 600W 相移全橋式轉換器，可將 370V 至 410V DC 輸入轉換為穩壓 12V 輸出。此轉換器的設計可將 ZVS 維持至 50% 負載。此 600W EVM 旨在展示如何透過實現 50% 至 100% 負載的 ZVS，從而將 UCC28950 控制裝置用於高效率應用。為達到此高效率， UCC28950 設計用於驅動全橋式轉換器二次側同步整流器。UCC28950 也整合突衝模式和 DCM 功能，提升無負載效率

使用指南: PDF
TI.com 無法提供
模擬型號

UCC28950 and UCC28951 PSpice Transient Model (Rev. C)

SLUM169C.ZIP (168 KB) - PSpice Model
下載
模擬型號

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

SLUM276A.TSC (738 KB) - TINA-TI Reference Design
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模擬型號

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

SLUM277A.TSC (739 KB) - TINA-TI Reference Design
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計算工具

SLUC210 — UCC28950 MathCAD Design Tool

支援產品和硬體

支援產品和硬體
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計算工具

SLUC222 — UCC2895x Excel Design Tool

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

支援產品和硬體
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配置圖

HPA442B Gerber Files

SLUR038.ZIP (292 KB)
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配置圖

UCC28950 HPA471 Gerbers

SLUR039.ZIP (208 KB)
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參考設計

PMP7246 — 採用 PSFB ZTE 和 HSHB 的 36-60V 輸入、350W 慢汲極調變電源轉換器參考設計

This is a 350W High Speed Full Bridge Phase Shift ZVT Synchronous Rectification DC/DC reference design. It is built for telecom applications to supply a RF Power Amplifier stage. The design is utilizing UCC28950 voltage mode forward and average current limitation backward converter (two quadrant (...)
Test report: PDF
電路圖: PDF
參考設計

PMP8606 — 300W 全橋相移式 (FBPS) DC/DC 電源參考設計

This design is a 100kHz FBPS converter working in voltage mode. It supports 400Vdc..750Vdc input voltage range and provides 24V/12A regulated. TI's UCC28950 part enables high efficiency at high input voltage.
Test report: PDF
電路圖: PDF
參考設計

PMP6712 — 適用 PoE 供電設備 (PSE) 的雙通道全橋式轉換器參考設計 (54 V @ 30 A)

This is a phase-shifted full-bridge converter reference design capable of delivering 1600 W of isolated output power and achieving efficiency of greater than 96%. This design uses the UCC28950 controller in a dual-phase primary/secondary configuration. An LM5017 constant on-time synchronous buck (...)
Test report: PDF
電路圖: PDF
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TSSOP (PW) 24 Ultra Librarian
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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
  • 進行中的可靠性監測
內含資訊：
  • 晶圓廠位置
  • 組裝地點

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