Offline Controllers | NCP1365

低功耗离线固定电流和恒定电压初级侧 PWM 电流模式控制器，带高电压启动电流源

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概览

NCP1365 提供了一个新型方案，通用电源反激应用中比 20 W 略高几瓦的输出功率等级。由于采用一种新方法，此新控制器不再需要辅助反馈电路（通常为光耦合器和 TL431 参比），同时可以实现卓越的线路和负载调节。NCP1365 在高负载时以谷锁闭准谐振峰值电流控制模式运行，以提供高能效。当辅助侧功率开始消失时，该控制器将自动调节占空比，然后在更低负载下，该控制器通过谷开关勘测，以固定峰值电流进入脉冲频率调制。这种技术允许在微小的虚拟负载下保持输出调节。前 4 个谷中的谷锁闭可防止谷跳跃运行，然后在更低负载下的固开关可提供高能效。

  • AC-DC USB chargers for cell phones, tablets, and other portable devices
  • AC-DC USB chargers for cell phones, tablets, and other portable devices
  • No frequency clamp, 80 or 110 kHz Maximum Switching Frequency
  • Quasi-Resonant with Valley Switching Operation
  • 560-V Startup Current Source
  • Fixed Peak Current & Deep frequency foldback @ light load operation
  • Cycle by Cycle peak current limit
  • Wide Operation VCC range (up to 28 V)
  • Internal Temperature Shutdown
  • CS & Vs/ZCD pin Short and Open Protection
  • Constant Current Primary-side feedback eliminates secondary controller
  • ±10% Current Regulation
  • Build-in soft-sart
  • Low Start-up current (2.5 μA typ.)
  • Clamped Gate-drive Output for Mosfet
  • Less than 10 mW No-Load Performance

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Package Type

Case Outline

MSL Type

MSL Temp (°C)

Container Type

Container Qty.

ON Target

Topology

Control Mode

fsw Typ (kHz)

Stand-by Mode

UVLO (V)

Short Circuit Protection

Latch

Soft Start

VCC Max (V)

Drive Cap. (mA)

Reference Price

NCP1365AABCYDR2G

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Lifetime

CAD Model

Pb

A

H

P

SOIC-7

751U

1

260

REEL

2500

N

Flyback

Current Mode

Variable

Yes

6.5

Yes

Yes

Yes

28

2000 / 1000

$0.2985

More Details

NCP1365ACBAXDR2G

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Active

CAD Model

Pb

A

H

P

SOIC-7

751U

1

260

REEL

2500

Y

Flyback

Current Mode

Variable

Yes

6.5

Yes

Yes

Yes

28

2000 / 1000

$0.3371

More Details

NCP1365BABCYDR2G

Loading...

Active

CAD Model

Pb

A

H

P

SOIC-7

751U

1

260

REEL

2500

Y

Flyback

Current Mode

Variable

No

6.5

Yes

Yes

Yes

28

2000 / 1000

$0.3371

More Details

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