Offline Controllers | NCP1379

控制器，准谐振电流模式

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CAD Model

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概览

NCP1379 是高性能器件，旨在为准谐振转换器供电。该控制器利用专有的谷锁闭系统，可以在功率负载变轻时进行切换并降低开关频率。这样将产生稳定的运行，即使在漏极-源极谷中总是触发的开关事件下也是如此。此系统可在低至第 4 个谷的条件下运行，并在之后切换到变频模式，确保出色的待机功率性能。为了提高过载条件下的安全性，该控制器包括了过功率保护 (OPP) 电路，可对高电平线路处提供的电源进行箝制。具有安全功能的固定内部计时器依赖反馈电压来检测故障。一旦计时器过期，控制器将停止并进入自动恢复模式，以确保低占空比突发操作。该控制器特别适合电视电源应用，具有低启动电压，允许使用辅助电源为设备供电。

  • Auxiliary power supplies (flat TV, appliances)
  • Power AC-DC converters for adapters, TVs and set top boxes
  • Quasi-resonant peak current mode control operation
  • Valley switching operation with valley lockout
  • Frequency foldback at light load
  • Adjustable overpower protection
  • Auto-recovery output short circuit protection
  • Fixed internal 80 ms timer for short circuit protection
  • VCC range operation up to 28 V

物质成分

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状态

CAD Models

Compliance

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

NCP1379DR2G

Contact Sales

Obsolete

CAD Model

Pb

A

H

P

SOIC-8

751-07

1

260

REEL

2500

N

Flyback

Current Mode

Variable

Yes

9

Yes

Yes

Yes

28

500 / 800

Price N/A

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