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AC/DC 轉換器

UCC28881

現行

700-V 最低靜態電流離線切換器

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產品規格表

UCC28881

現行
產品規格表 立即訂購

產品詳細資料

Rating Catalog Topology Buck, Buck boost, Buck-Boost, Flyback, PSR flyback Iout (max) (A) 0.225 Vin (max) (V) 450 Vin (min) (V) 36 Vout (max) (V) 60 Vout (min) (V) 5 Features Current limiting, Green mode, High voltage startup, High-voltage startup, Integrated Switch, Leading edge blanking, Light load efficiency, Light-load efficiency, Low power, Overcurrent protection, Overtemperature protection, Soft start, Thermal shutdown Control mode Current Switching frequency (max) (kHz) 62 Operating temperature range (°C) -40 to 125 Iq (typ) (µA) 10 Duty cycle (max) (%) 55
Rating Catalog Topology Buck, Buck boost, Buck-Boost, Flyback, PSR flyback Iout (max) (A) 0.225 Vin (max) (V) 450 Vin (min) (V) 36 Vout (max) (V) 60 Vout (min) (V) 5 Features Current limiting, Green mode, High voltage startup, High-voltage startup, Integrated Switch, Leading edge blanking, Light load efficiency, Light-load efficiency, Low power, Overcurrent protection, Overtemperature protection, Soft start, Thermal shutdown Control mode Current Switching frequency (max) (kHz) 62 Operating temperature range (°C) -40 to 125 Iq (typ) (µA) 10 Duty cycle (max) (%) 55
SOIC (D) 7 29.4 mm² (4.9 mm × 6 mm)
  • Integrated 14-Ω, 700-V Power MOSFET
  • Integrated High-Voltage Current Source for Internal Device Bias Power
  • Integrated Current Sense
  • Internal Soft Start
  • Self-Biased Switcher (Start Up and Operation Directly from Rectified Mains Voltage)
  • Supports Buck, Buck-Boost and Flyback Topologies
  • <100-μA Device Quiescent Current
  • Robust Current Protection During Load Short Circuit
  • Protection
    • Current Limit
    • Overload and Output Short Circuit
    • Over Temperature
  • Integrated 14-Ω, 700-V Power MOSFET
  • Integrated High-Voltage Current Source for Internal Device Bias Power
  • Integrated Current Sense
  • Internal Soft Start
  • Self-Biased Switcher (Start Up and Operation Directly from Rectified Mains Voltage)
  • Supports Buck, Buck-Boost and Flyback Topologies
  • <100-μA Device Quiescent Current
  • Robust Current Protection During Load Short Circuit
  • Protection
    • Current Limit
    • Overload and Output Short Circuit
    • Over Temperature

The UCC28881 integrates the controller and a 14-Ω, 700-V power MOSFET into one monolithic device. The device also integrates a high-voltage current source, enabling start up and operation directly from the rectified mains voltage. UCC28881 is the same family device of UCC28880, with higher current handling capability.

The low quiescent current of the device enables excellent efficiency. With the UCC28881 the most common converter topologies, such as buck, buck-boost and flyback can be built using a minimum number of external components.

The UCC28881 incorporates a soft-start feature for controlled start up of the power stage which minimizes the stress on the power-stage components.

The UCC28881 integrates the controller and a 14-Ω, 700-V power MOSFET into one monolithic device. The device also integrates a high-voltage current source, enabling start up and operation directly from the rectified mains voltage. UCC28881 is the same family device of UCC28880, with higher current handling capability.

The low quiescent current of the device enables excellent efficiency. With the UCC28881 the most common converter topologies, such as buck, buck-boost and flyback can be built using a minimum number of external components.

The UCC28881 incorporates a soft-start feature for controlled start up of the power stage which minimizes the stress on the power-stage components.
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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 UCC28881 700-V, 225-mA Low Quiescent Current Off-Line Converter datasheet (Rev. B) PDF | HTML 2016/1/11
應用說明 Operating UCC2888x Offline Buck in Saturation for Cost Reduction 2018/6/22
技術文章 How to build a cost-competitive and robust auxiliary power supply PDF | HTML 2018/2/1
應用說明 UCC2888x Diode Selection When Configured as High Side Buck 2017/11/20
技術文章 Unique techniques to increase controller power PDF | HTML 2017/8/23
應用說明 UCC28880, UCC28881 Audible Noise Reduction Techniques 2017/3/23
技術文章 Powering the IoT PDF | HTML 2017/1/26
技術文章 Power Tips: Design considerations of high-voltage converters in a cascode MOSFET PDF | HTML 2015/11/3

設計與開發

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開發板

TIEVM-MTR-HVINV — 適用於高電壓 3 相位逆變器馬達控制的 C2000™ MCU 評估模組

TIEVM-MTR-HVINV 是一款適合高電壓馬達驅動應用的 750W 開發電路板。此 EVM 透過 InstaSPIN-FOC FAST 和 eSMO 無感測器估測器，實現了三相永磁同步馬達 (PMSM) 的無感測器 FOC 控制。模組化設計支援隨插即用，能夠將不同子板附加至同一主機板。此 EVM 的硬體和韌體經過測試且可立即使用，有助於加快開發時間，設計詳細資訊和測試結果請見本使用指南。

使用指南: PDF | HTML
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開發板

UCC28881EVM-680 — UCC28881 離線高壓側降壓轉換器評估模組

UCC28881EVM-680 評估模組 (EVM) 是一款離線高電壓降壓型電源供應器，可在 225mA 最大輸出下提供 13 VDC。輸入可接受 85 VAC 至 265 VAC 的電壓範圍。

使用指南: PDF
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模擬型號

UCC28881 PSpice Transient Model

SLUM501A (126 KB) - PSpice 模型
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計算工具

SLUC626 — UCC28881 Design Calculator

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