控制器,固定频率,电流模式,用于反激转换器

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NCP1244 是一款新型固定频率电流模式控制器,具有动态自供电功能。此功能可激活内部启动电流源使其在启动期间、瞬变、锁存、待机等期间为控制器供电,大大简化了辅助电源和 Vcc 电容器的设计。此器件包含一个特殊的高压检测器,会检测从交流线路上拔下的应用,然后触发 X2 放电电流。 它采取基于计时器的故障检测,确保检测过载和可调补偿,以帮助保持最大功率,无论输入电压如何。 由于频率折回,该控制器在轻负载条件下表现出良卓越的能效,同时保持极低的待机功耗。内部频率抖动、斜坡补偿和多功能锁存输入使得此控制器成为强大电源设计的绝佳备选。 专用的离线模式通过让整个器件“休眠”,从而最大限度地降低控制电路的功耗,无负载功耗极低。此产品符合 IEC60950 标准。请参阅下面符合性报告部分中的测试报告和认证。

  • Frequency Foldback and Skip Mode
  • Timer-Based Overload Protection with Latched (Option A) or Auto-Recovery (Option B) operation
  • High voltage current source with Dynamic Self Supply (DSS)
  • Internal Frequency Jittering
  • Adjustable overpower protection
  • Dedicated latch off input
  • Integrated X2 capacitor discharge
  • Power saving off mode when used with NCP4353 or NCP4354

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NCP1244AD065R2G

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Obsolete

CAD Model

Pb

A

H

P

SOIC-7

1

260

REEL

2500

N

Flyback

Current Mode

65

Yes

8.9

Yes

Yes

Yes

28

500 / 800

Price N/A

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NCP1244AD100R2G

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Last Shipments

CAD Model

Pb

A

H

P

SOIC-7

1

260

REEL

2500

N

Flyback

Current Mode

100

Yes

8.9

Yes

Yes

Yes

28

500 / 800

Price N/A

More Details

NCP1244BD065R2G

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Obsolete

CAD Model

Pb

A

H

P

SOIC-7

1

260

REEL

2500

N

Flyback

Current Mode

65

Yes

8.9

Yes

Yes

Yes

28

500 / 800

Price N/A

More Details

NCP1244BD100R2G

Loading...

Obsolete

CAD Model

Pb

A

H

P

SOIC-7

1

260

REEL

2500

N

Flyback

Current Mode

100

Yes

8.9

Yes

Yes

Yes

28

500 / 800

Price N/A

More Details

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