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AC/DC 控制器

UCC3819A

不推薦在新設計中採用

具有 10.2V/9.7V UVLO 和更小閘極驅動電阻器、0°C 至 70°C 的 6kHz-220kHz CCM PFC 控制器

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產品規格表
UCC3819A 不建議用於新設計
此產品將繼續向現有客戶提供。新設計應考量替代產品。
open-in-new 比較替代產品
功能相同，但針腳輸出與所比較的裝置不同。
UCC28180 現行 具有強化型啓動和瞬態回應的 18kHz-250kHz CCM PFC 控制器 Enhanced transient response and startup, fewer pins, wider operating temperature range, lower startup current, audible noise minimization, enhanced dynamic fault response.

UCC3819A

不推薦在新設計中採用
產品規格表 立即訂購

產品詳細資料

Topology Boost, PFC controller Control mode CCM Features < 150 W applications, < 150W Applications, Average current mode, Continuous Control Mode, Enable, OVP, Overvoltage protection, Supports Flyback Duty cycle (max) (%) 100
Topology Boost, PFC controller Control mode CCM Features < 150 W applications, < 150W Applications, Average current mode, Continuous Control Mode, Enable, OVP, Overvoltage protection, Supports Flyback Duty cycle (max) (%) 100
SOIC (D) 16 59.4 mm² (9.9 mm × 6 mm)
  • Controls Boost Preregulator to Near-Unity Power Factor
  • World Wide Line Operation
  • Over-Voltage Protection
  • Accurate Power Limiting
  • Average Current Mode Control
  • Improved Noise Immunity
  • Improved Feed-Forward Line Regulation
  • Leading Edge Modulation
  • 150-µA Typical Start-Up Current
  • Low-Power BiCMOS Operation
  • 10.8-V to 17-V Operation
  • Programmable Output Voltage (Tracking Boost Topology)
  • Controls Boost Preregulator to Near-Unity Power Factor
  • World Wide Line Operation
  • Over-Voltage Protection
  • Accurate Power Limiting
  • Average Current Mode Control
  • Improved Noise Immunity
  • Improved Feed-Forward Line Regulation
  • Leading Edge Modulation
  • 150-µA Typical Start-Up Current
  • Low-Power BiCMOS Operation
  • 10.8-V to 17-V Operation
  • Programmable Output Voltage (Tracking Boost Topology)

The UCC2819A/UCC3819A provides all the functions necessary for active power factor corrected preregulators. The controller achieves near unity power factor by shaping the ac-input line current waveform to correspond to that of the ac-input line voltage. Average current mode control maintains stable, low distortion sinusoidal line current.

Designed in Texas Instrument’s BiCMOS process, the UCC3819A offers new features such as lower start-up current, lower power dissipation, overvoltage protection, a shunt UVLO detect circuitry and a leading-edge modulation technique to reduce ripple current in the bulk capacitor.

The UCC3819A allows the output voltage to be programmed by bringing out the error amplifier noninverting input.

The UCC3819A is directly pin for pin compatible with the UCC3819. Only the output stage of UCC3819A has been modified to allow use of a smaller external gate drive resistor values. For some power supply designs where an adequately high enough gate drive resistor can not be used, the UCC3819A offers a more robust output stage at the cost of increasing the internal gate resistances. The gate drive of the UCC3819A remains strong at ±1.2 A of peak current capability.

Available in the 16-pin D, N, and PW packages.

The UCC2819A/UCC3819A provides all the functions necessary for active power factor corrected preregulators. The controller achieves near unity power factor by shaping the ac-input line current waveform to correspond to that of the ac-input line voltage. Average current mode control maintains stable, low distortion sinusoidal line current.

Designed in Texas Instrument’s BiCMOS process, the UCC3819A offers new features such as lower start-up current, lower power dissipation, overvoltage protection, a shunt UVLO detect circuitry and a leading-edge modulation technique to reduce ripple current in the bulk capacitor.

The UCC3819A allows the output voltage to be programmed by bringing out the error amplifier noninverting input.

The UCC3819A is directly pin for pin compatible with the UCC3819. Only the output stage of UCC3819A has been modified to allow use of a smaller external gate drive resistor values. For some power supply designs where an adequately high enough gate drive resistor can not be used, the UCC3819A offers a more robust output stage at the cost of increasing the internal gate resistances. The gate drive of the UCC3819A remains strong at ±1.2 A of peak current capability.

Available in the 16-pin D, N, and PW packages.
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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 UCC2819A Power Factor Preregulator datasheet 2003/9/9

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