Offline Controllers | NCP1246

控制器，固定频率，电流模式，用于反激转换器

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概览

NCP1246 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。该高电压结构还包括了欠电压检测电路。NCP1246 具有基于计时器的故障检测功能，可确保过载检测；还具有可调节功率补偿，有助于保持最大功率，而无论输入电压如何。由于频率折回，该控制器在轻型负载条件下具有绝佳的能效，同时还能达到极低的待机功耗。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坚固电源设计的绝佳备选。专用关断模式使得该 SMPS 与辅助侧控制器 NCP4353 或 NCP4354 联用时，能够达到极低的无负载输入功耗。配合使用时，该 SMPS 能够达到 <10 mW 的无负载输入功耗。辅助侧控制器向 NCP1246 发出进入睡眠模式的信号，最大程度降低了该控制电路的功耗。此产品符合 IEC60950 标准。请参见下面符合性报告部分中的测试报告和证书。

  • AC-DC Adapters
  • LCD TV power supplies

  • Notebook Computers

  • Frequency foldback and skip mode
  • Timer-based overload protection with latched (A version) or auto-recovery (B version) operation
  • High-voltage startup with dynamic self supply
  • Integrated brown-out detection
  • Frequency Modulation
  • Adjustable overpower protection
  • Latch off input

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Package Type

Case Outline

MSL Type

MSL Temp (°C)

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Container Qty.

ON Target

Topology

Control Mode

fsw Typ (kHz)

Stand-by Mode

UVLO (V)

Short Circuit Protection

Latch

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Reference Price

NCP1246AD065R2G

Contact Sales

Obsolete

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CAD Model

Pb

A

H

P

SOIC-7

751U

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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NCP1246AD100R2G

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Obsolete

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CAD Model

Pb

A

H

P

SOIC-7

751U

1

260

REEL

2500

N

Flyback

Current Mode

100

Yes

8.9

Yes

Yes

Yes

28

500 / 800

Price N/A

More Details

NCP1246ALD065R2G

Contact Sales

Last Shipments

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CAD Model

Pb

A

H

P

SOIC-7

751U

1

260

REEL

2500

N

Flyback

Current Mode

65

Yes

8.9

Yes

Yes

Yes

28

500 / 800

Price N/A

More Details

NCP1246ALD100R2G

Contact Sales

Obsolete

相似产品推荐
CAD Model

Pb

A

H

P

SOIC-7

751U

1

260

REEL

2500

N

Flyback

Current Mode

100

Yes

8.9

Yes

Yes

Yes

28

500 / 800

Price N/A

More Details

NCP1246BD065R2G

Contact Sales

Active

CAD Model

Pb

A

H

P

SOIC-7

751U

1

260

REEL

2500

Y

Flyback

Current Mode

65

Yes

8.9

Yes

Yes

Yes

28

500 / 800

$0.5143

More Details

NCP1246BD100R2G

Contact Sales

Active

CAD Model

Pb

A

H

P

SOIC-7

751U

1

260

REEL

2500

Y

Flyback

Current Mode

100

Yes

8.9

Yes

Yes

Yes

28

500 / 800

$0.5143

More Details

NCP1246BLD065R2G

Contact Sales

Active

CAD Model

Pb

A

H

P

SOIC-7

751U

1

260

REEL

2500

Y

Flyback

Current Mode

65

Yes

8.9

Yes

Yes

Yes

28

500 / 800

$0.5143

More Details

NCP1246BLD100R2G

Contact Sales

Obsolete

相似产品推荐
CAD Model

Pb

A

H

P

SOIC-7

751U

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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可靠性数据

Die Related Summary Data

Device: NCP1246AD065R2G

Equivalent to wafer fab process: VHVIC

产品技术

产品技术

等效器件小时

平均故障间隔时间/平均无故障时间（按小时计算）

FITS

VHVIC

2

2577173853

More Details

Re-calculate Data

Data is based on the following assumptions.

Note: The temperature and confidence level may be adjusted to your requirements.

Disclaimer: A reliability FIT rate calculated using this tool shall not be used for any functional safety purpose. In case a raw FIT rate needs to be estimated for a component which is targeted to be used in a safety critical application (i.e. compliant to ISO 26262 standard) it should be calculated according to generic safety standards (IEC62380, IEC61709, SN29500, FIDES, etc.)

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