UCC28250

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支持預偏置模式的高級半橋/全橋 PWM 控制器

產品詳情

Rating Catalog Topology Forward, Full bridge, Half bridge, Push pull Vin (max) (V) 17 Control mode Current, Voltage Features Current limiting, High-voltage startup, SR logic Operating temperature range (°C) -40 to 125 Duty cycle (max) (%) 100
Rating Catalog Topology Forward, Full bridge, Half bridge, Push pull Vin (max) (V) 17 Control mode Current, Voltage Features Current limiting, High-voltage startup, SR logic Operating temperature range (°C) -40 to 125 Duty cycle (max) (%) 100
TSSOP (PW) 20 41.6 mm2 6.5 x 6.4 VQFN (RGP) 20 16 mm2 4 x 4
  • Prebiased Start-up
  • Synchronous Rectifier Control Outputs With Programmable Delays (Including Zero Delay Support)
  • Voltage Mode Control With Input Voltage Feed-Forward or Current Mode Control
  • Primary or Secondary-Side Control
  • 3.3-V, 1.5% Accurate Reference Output
  • 1-MHz Capable Switching Frequency
  • 1% Accurate Cycle-by-Cycle Overcurrent Protection with Matched Duty Cycle Outputs
  • Programmable Soft-Start and Hiccup Restart Timer
  • Thermally Enhanced 4-mm × 4-mm QFN-20 Package and 20-pin TSSOP Package
  • Prebiased Start-up
  • Synchronous Rectifier Control Outputs With Programmable Delays (Including Zero Delay Support)
  • Voltage Mode Control With Input Voltage Feed-Forward or Current Mode Control
  • Primary or Secondary-Side Control
  • 3.3-V, 1.5% Accurate Reference Output
  • 1-MHz Capable Switching Frequency
  • 1% Accurate Cycle-by-Cycle Overcurrent Protection with Matched Duty Cycle Outputs
  • Programmable Soft-Start and Hiccup Restart Timer
  • Thermally Enhanced 4-mm × 4-mm QFN-20 Package and 20-pin TSSOP Package

The UCC28250 PWM controller is designed for high power density applications that may have stringent prebiased start-up requirements. The integrated synchronous rectifier control outputs target high-efficiency and high-performance topologies such as half-bridge, full-bridge, interleaved forward, and push-pull. The UCC27200 half-bridge drivers and UCC2732X MOSFET drivers used in conjunction with the UCC28250 provide a complete power converter solution.

Externally programmable soft-start, used in conjunction with an internal prebiased start-up circuit, allows the controller to gradually reach a steady-state operating point under all output conditions. The UCC28250 can be configured for primary or secondary-side control and either voltage or current mode control can be implemented.

The oscillator operates at frequencies up to 2 MHz, and can be synchronized to an external clock. Input voltage feedforward, cycle-by-cycle current limit, and a programmable hiccup timer allow the system to stay within a safe operation range. Input voltage, output voltage and temperature protection can be implemented. Dead time between primary-side switch and secondary-side synchronous rectifiers can be independently programmed.

The UCC28250 PWM controller is designed for high power density applications that may have stringent prebiased start-up requirements. The integrated synchronous rectifier control outputs target high-efficiency and high-performance topologies such as half-bridge, full-bridge, interleaved forward, and push-pull. The UCC27200 half-bridge drivers and UCC2732X MOSFET drivers used in conjunction with the UCC28250 provide a complete power converter solution.

Externally programmable soft-start, used in conjunction with an internal prebiased start-up circuit, allows the controller to gradually reach a steady-state operating point under all output conditions. The UCC28250 can be configured for primary or secondary-side control and either voltage or current mode control can be implemented.

The oscillator operates at frequencies up to 2 MHz, and can be synchronized to an external clock. Input voltage feedforward, cycle-by-cycle current limit, and a programmable hiccup timer allow the system to stay within a safe operation range. Input voltage, output voltage and temperature protection can be implemented. Dead time between primary-side switch and secondary-side synchronous rectifiers can be independently programmed.
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類型 標題 下載最新的英語版本 日期
* 數據表 UCC28250 Advanced PWM Controller With Prebias Operation 數據表 (Rev. D) PDF | HTML 2015年 6月 28日
選擇指南 電源管理指南 2018 (Rev. K) 2018年 7月 31日
選擇指南 電源管理指南 2018 (Rev. R) 2018年 6月 25日
應用手冊 Differences Between the UCC28251 and UCC28250 and Evaluation of the UCC28251 in (Rev. A) 2013年 2月 15日
應用手冊 如何調整UCC28250打嗝重啟時間和逐周期過流保護延遲時間之間的固定比例關系 2012年 1月 13日
EVM 用戶指南 Using the UCC28250EVM-564 (Rev. A) 2011年 10月 7日
EVM 用戶指南 Using the UCC28250EVM-501 Half Bridge DC-DC Converter with Primary Side Control (Rev. B) 2010年 12月 7日
應用手冊 Designing UCC28250 as a Secondary Side Control with a Pre-Bias Condition 2010年 11月 24日

設計和開發(fā)

如需其他信息或資源，請點擊以下任一標題進入詳情頁面查看（如有）。

評估板

UCC28250EVM-501 — 用于初級側控制中的 UCC28250 高級 PWM 控制器的評估模塊

The UCC28250EVM-501 is a fully assembled and tested circuit for evaluating the UCC28250 Advanced PWM Controller with Pre-Bias Operation. The UCC28250EVM-501 comprises a symmetrical half-bridge DC/DC converter, which converts a 36V to 72V DC input to a 3.3V DC output with a maximum 75W output power.
用戶指南: PDF
TI.com 上無現貨
評估板

UCC28250EVM-564 — 用于在二次側控制中具有預偏置負載操作的 UCC28250 高級 PWM 控制器的評估模塊

UCC28250EVM-564 是一塊完全組裝且經過測試的電路板，用于評估具有偏預置操作的 UCC28250 高級 PWM 控制器。UCC28250EVM-564 包含一個對稱半橋接 DC-DC 轉換器，該轉換器可以將 36V 至 75V 直流輸入電壓轉換成 3.3V 的直流輸出電壓，提供 100W 的最大輸出功率。
用戶指南: PDF
TI.com 上無現貨
仿真模型

UCC28250 Unencrypted PSPICE Average Model Package (Rev. A)

SLUM171A.ZIP (96 KB) - PSpice Model
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計算工具

SLUC260 — UCC28250 Excel Design Tool

支持的產品和硬件

支持的產品和硬件

產品
交流/直流和直流/直流控制器（外部 FET）
UCC28250 — 支持預偏置模式的高級半橋/全橋 PWM 控制器
參考設計

PMP8878 — 基于 UCC28250 的 1/8 磚型隔離式 DC/DC 電信電源模塊

PMP8878 是基于 UCC28250 高級 PWM 控制器的全功能 1/8 磚型隔離式直流/直流電信電源模塊。參考設計采用次級側控制和硬開關全橋電源拓撲，可在 40V-75V 輸入源寬范圍內運行時提供 12V/180W 輸出功率。該參考設計的亮點包括：95% 峰值效率、預偏置啟動、過熱保護和過流保護（間斷模式）。偏置電源塊采用 UCC25230，而該設計中采用的閘極驅動器包括用于驅動 SR MOSFET 的 UCC27324 和用于驅動初級側半橋 MOSFET 的 UCC27201。
測試報告: PDF
原理圖: PDF
封裝 引腳 CAD 符號、封裝和 3D 模型
TSSOP (PW) 20 Ultra Librarian
VQFN (RGP) 20 Ultra Librarian

訂購和質量

包含信息：
  • RoHS
  • REACH
  • 器件標識
  • 引腳鍍層/焊球材料
  • MSL 等級/回流焊峰值溫度
  • MTBF/時基故障估算
  • 材料成分
  • 鑒定摘要
  • 持續(xù)可靠性監(jiān)測
包含信息：
  • 制造廠地點
  • 封裝廠地點

推薦產品可能包含與 TI 此產品相關的參數、評估模塊或參考設計。

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