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AC/DC & DC/DC converters (integrated FET)

UCC28911

現行

具有定電壓、定電流及一次側穩壓功能的 700V 返馳切換器

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產品規格表

UCC28911

現行
產品規格表 立即訂購

產品詳細資料

Iout (max) (A) 0.7 Vin (min) (V) 10 Vin (max) (V) 450 Topology Buck, Flyback Switching frequency (min) (kHz) 0.42 Switching frequency (max) (kHz) 115 Features Adjustable switching frequency, Current limiting, Green mode, High voltage startup, High-voltage startup, Input line monitor, Integrated Switch, IoT compatible, Leading edge blanking, Light load efficiency, Light-load efficiency, Overcurrent protection, Overtemperature protection, Soft start, Thermal shutdown Control mode Current, Primary-side regulation, Voltage Vout (min) (V) 3.3 Vout (max) (V) 18 Rating Catalog Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.0235
Iout (max) (A) 0.7 Vin (min) (V) 10 Vin (max) (V) 450 Topology Buck, Flyback Switching frequency (min) (kHz) 0.42 Switching frequency (max) (kHz) 115 Features Adjustable switching frequency, Current limiting, Green mode, High voltage startup, High-voltage startup, Input line monitor, Integrated Switch, IoT compatible, Leading edge blanking, Light load efficiency, Light-load efficiency, Overcurrent protection, Overtemperature protection, Soft start, Thermal shutdown Control mode Current, Primary-side regulation, Voltage Vout (min) (V) 3.3 Vout (max) (V) 18 Rating Catalog Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.0235
SOIC (D) 7 29.4 mm² 4.9 x 6
  • Constant-Voltage (CV) and Constant-Current (CC) Output Regulation Without Optical-Coupler
  • ±5% Output Voltage Regulation Accuracy
  • ±5% Output Current Regulation With AC Line and Primary Inductance Tolerance Compensation
  • 700-V Start-Up and Smart Power Management Enables <30-mW Standby Power
  • 115-kHz Maximum Switching Frequency Design for High-Power Density
  • Valley Switching and Frequency Dithering to Ease EMI Compliance
  • Thermal Shut Down
  • Low Line and Output Over-Voltage Protection
  • Constant-Voltage (CV) and Constant-Current (CC) Output Regulation Without Optical-Coupler
  • ±5% Output Voltage Regulation Accuracy
  • ±5% Output Current Regulation With AC Line and Primary Inductance Tolerance Compensation
  • 700-V Start-Up and Smart Power Management Enables <30-mW Standby Power
  • 115-kHz Maximum Switching Frequency Design for High-Power Density
  • Valley Switching and Frequency Dithering to Ease EMI Compliance
  • Thermal Shut Down
  • Low Line and Output Over-Voltage Protection

The UCC28910 and UCC28911 are high-voltage flyback switchers that provide output voltageand current regulation without the use of an optical coupler. Both devices incorporate a 700-Vpower FET and a controller that process operating information from the flyback auxiliary windingand power FET to provide a precise output voltage and current control. The integrated high-voltage current source for startup that is switched off during device operation, and the controller current consumption is dynamically adjusted with load. Both enablethe very low stand-by power consumption.

Control algorithms in the UCC28910 and UCC28911, combining switching frequency and peakprimary current modulation, allow operating efficiencies to meet or exceed applicable standards.Discontinuous conduction mode (DCM) with valley switching is used to reduce switching losses.Built-in protection features help to keep secondary and primary component stress levels in check across the operating range. The frequency jitter helps to reduce EMI filter

The UCC28910 and UCC28911 are high-voltage flyback switchers that provide output voltageand current regulation without the use of an optical coupler. Both devices incorporate a 700-Vpower FET and a controller that process operating information from the flyback auxiliary windingand power FET to provide a precise output voltage and current control. The integrated high-voltage current source for startup that is switched off during device operation, and the controller current consumption is dynamically adjusted with load. Both enablethe very low stand-by power consumption.

Control algorithms in the UCC28910 and UCC28911, combining switching frequency and peakprimary current modulation, allow operating efficiencies to meet or exceed applicable standards.Discontinuous conduction mode (DCM) with valley switching is used to reduce switching losses.Built-in protection features help to keep secondary and primary component stress levels in check across the operating range. The frequency jitter helps to reduce EMI filter
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* Data sheet UCC28910, UCC28911 High-Voltage Flyback Switcher with Primary-Side Regulation and Output Current Control datasheet (Rev. D) PDF | HTML 2016年 12月 19日
Application note Flyback Aux Winding OVP and UVLO Fault Sensing Design and Troubleshooting Tips PDF | HTML 2021年 8月 31日
Technical article Overcoming common design challenges in an UV sterilization box system PDF | HTML 2020年 7月 27日
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Technical article Design an energy-efficient, lower-acoustic cooker hood with an elegant user interf PDF | HTML 2016年 3月 29日
Technical article Power Tips: Power converter topology/component selections in high input voltage ap PDF | HTML 2015年 10月 7日
White paper Control Challenges for Low Power AC/DC Converters 2015年 10月 2日
White paper Control Challenges for Low Power AC/DC Converters (PPT) 2015年 10月 2日
Technical article Designing multiple output converters with primary side sensing PDF | HTML 2015年 8月 4日
EVM User's guide Using the UCC28911EVM-718 2015年 3月 6日

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開發板

UCC28911EVM-718 — UCC28911 評估模組

The UCC28911EVM-718 evaluation module is an offline Flyback power supply that provides isolated output voltage and current regulation without the use of an optocoupler and secondary-side feedback components. The input accepts a voltage range of 85VAC to 265VAC, 47Hz to 64Hz. The evaluation module (...)

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PMP4367 — 通用 AC 輸入 6W 變壓器，能源之星 6 效率評等

此 5V/1.2A 變壓器解決方案經過全面測試，並通過 EMI 及 EMC (CE、RE) 安全要求。採用高效率一次側控制器 UCC28910。該設計的效率符合能源之星 6 標準，適合用於小型外殼。設計尺寸爲 36mmX30mmX15mm，已經過熱特性分析。在整個操作範圍內，空載效率為 <30mW。使用低成本 EE16 變壓器。
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AC/DC & DC/DC converters (integrated FET)
UCC28911 — 具有定電壓、定電流及一次側穩壓功能的 700V 返馳切換器
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