UCC28911

正在供貨

具有恒壓恒流和初級側調節功能的 700V 反激式開關

產品詳情

Rating Catalog Topology Buck, Flyback Iout (max) (A) 0.7 Vin (max) (V) 450 Vin (min) (V) 10 Vout (max) (V) 18 Vout (min) (V) 3.3 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 Switching frequency (min) (kHz) 0.42 Switching frequency (max) (kHz) 115 Operating temperature range (°C) -40 to 125 Iq (typ) (μA) 23500 Duty cycle (max) (%) 99
Rating Catalog Topology Buck, Flyback Iout (max) (A) 0.7 Vin (max) (V) 450 Vin (min) (V) 10 Vout (max) (V) 18 Vout (min) (V) 3.3 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 Switching frequency (min) (kHz) 0.42 Switching frequency (max) (kHz) 115 Operating temperature range (°C) -40 to 125 Iq (typ) (μA) 23500 Duty cycle (max) (%) 99
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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設計和開發

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評估板

UCC28911EVM-718 — UCC28911 評估模塊

UCC28911EVM-718 評估模塊是一種離線反激式電源，無需使用光耦合器和次級側反饋組件即可提供隔離式輸出電壓和電流調節。支持的輸入電壓范圍為 85VAC 至 265VAC、47Hz 至 64Hz。此評估模塊使用 UCC28911 CV/CC PWM HV 開關。此器件集成了一個 700V 功率 MOSFET 和控制器，此控制器處理來自輔助反激式繞組以及功率 MOSFET 的運行信息，從而提供精準的輸出電壓與電流控制。UCC28911 中的控制算法使得運行效率符合甚至超過現行標準。較少的系統部件數和內置的高級保護功能使得此解決方案具有成本效益，并且能夠滿足全球范圍內嚴格的能效要求。

用戶指南: PDF
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計算工具

SLUC624 — UCC28911 Design Calculator

支持的產品和硬件

支持的產品和硬件

產品
AC/DC 和 DC/DC 轉換器（集成 FET）
UCC28911 — 具有恒壓恒流和初級側調節功能的 700V 反激式開關

許多 TI 參考設計都包括 UCC28911

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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
  • 持續可靠性監測
包含信息：
  • 制造廠地點
  • 封裝廠地點

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