LED 驱动器,离线降压,功率因数校正

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NCL30002 是一款开关模式电源控制器,适用于中低功率单级功率因数 (PF) 校正的 LED 驱动器。该器件作为临界导通模式 (CrM) 降压控制器运行,用于针对特定的线路电压范围,以较高功率因数调节 LED 电流。该电流限值阈值进行严格微调,让开环控制技术能够减少零件数目,同时保持准确的电流调节和高功率因数。CrM 运行尤其适用于 LED 应用,因为即使在低功率水平下也能实现极高能效。这对于要符合合规要求,同时要满足总体系统光效能要求的 LED 照明尤其重要。在 CrM 中,开关频率根据线路和负载不同而变化。因为电流会在重新激活 MOSFET 主开关之前变为零值,所以输出整流器中的恢复损耗可以忽略,因此开关损耗低。

  • LED Bulbs
  • LED Downlights
  • Power Factor Corrected LED Drivers
  • LED Fluorescent Tube Replacements
  • High Efficiency LED Lighting
  • Fixed On time/Peak Current Power Factor Correction Control Architecture
  • Low 485 mV Current Sense threshold
  • Maximum Vcc of 20 Vdc
  • Wide -40 to + 125 °C Temperature Range
  • Low typical 24 µA startup current
  • 500 mA Source / 800 mA Sink MOSFET Gate Driver
  • ± 3.1% Current limit accuracy across complete temperature range

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NCL30002DR2G

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Pb

A

H

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SOIC-8

1

260

REEL

2500

N

Step-Down

12.5

308 VAC

20 VGATE

35/25 ns - Rise/Fall time

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