Offline Controllers | NCP1341

准谐振控制器，高电压，具有带功率偏移模式 (PEM) 的谷锁闭开关功能

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概览

NCP1341 是一款高度集成的准谐振反激控制器，适用于设计高性能离线功率转换器。NCP1341 具有集成的有源 X2 电容器放电功能，可以实现低于 30 mW 的无负载功耗。准谐振电流模式反激级功能具有专属的谷锁闭电路，确保了稳定的谷开关。此系统可在低至第 6 个谷的情况下运行，并转换为频率折回模式以降低开关损耗。随着负载进一步降低，NCP1341 进入静音跳过模式来管理功率传递。NCP1341 集成了功率偏移模式 (PEM)，可最大程度减小需要高瞬变负载功能设计中的变压器尺寸。如果不要求瞬变负载功能，NCP1340 则与不带 PEM 时的性能和功能相同。为了帮助确保转换器耐用性，NCP1341 实施了若干关键保护功能，如内部欠电压检测、在任何输入电压下保证恒定最大输出功率的非功耗过功率保护 (OPP)、通过专门引脚实现的锁存过电压和 NTC 就绪高温保护，以及线路去除检测，可在去除线路时对 X2 电容器进行安全放电。

  • Medium or High Power AC-DC Adapters
  • Ultra High Density AC-DC Adapters
  • Computer Power Supplies
  • Phone and Tablet Adapters
  • Notebook Adpaters
  • Flat TV SMPS
  • Computer Power Supplies
  • Phone and Tablet Adapters
  • QR Frequency Jittering
  • New Quiet-Skip Technology
  • Integrated HV Startup with Brownout Protection
  • Valley Switching Operation with Valley Lockout
  • Integrated X2 Capacitor Discharge Capability
  • NTC Compatible Fault Pin
  • High Drive Capability: -500 mA / +800 mA
  • Latch input for OVP and OTP implementations
  • Power Excursion Mode (PEM)

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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

NCP1341A1D1R2G

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Active

CAD Model

Pb

A

H

P

SOIC-9 NB

751BP

1

260

REEL

2500

Y

Flyback

Current Mode

Variable

Yes

9

Yes

Yes

Yes

30

500 / 800

$0.6208

More Details

NCP1341B1D1R2G

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Active

CAD Model

Pb

A

H

P

SOIC-9 NB

751BP

1

260

REEL

2500

Y

Flyback

Current Mode

Variable

Yes

9

Yes

No

Yes

30

500 / 800

$0.6731

More Details

NCP1341B1DR2G

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Obsolete

CAD Model

Pb

A

H

P

SOIC-8

751-07

1

260

REEL

2500

N

Flyback

Current Mode

Variable

Yes

9

Yes

No

Yes

30

500 / 800

Price N/A

More Details

NCP1341B4D1R2G

Loading...

Active

CAD Model

Pb

A

H

P

SOIC-9 NB

751BP

1

260

REEL

2500

Y

Flyback

Current Mode

Variable

Yes

9

Yes

No

Yes

30

500 / 800

$0.4824

More Details

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