Offline Controllers | NCP1351

控制器，可变开关时间电流模式，带短路保护

Obsolete

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产品

概览

NCP1351 是一款电流模式控制器，适合成本对其至关重要的低功耗离线反激开关电源 (SMPS)。此控制器基于固定峰值电流技术（准固定 TON），可以在负载变轻时降低开关频率。因此，使用 NCP1351 的电源天然具有出色的无负载功耗，同时优化了其他负载条件下的能效。当频率降低时，峰值电流逐渐减小到最大峰值电流的 30% 左右，以防变压器发生机械谐振。因此，在保持良好的待机功率性能的同时，大大降低了噪音风险。外部可调计时器永久监控反馈活动，并在短路或过载的情况下保护电源。一旦计时器到期，NCP1351 便停止开关，并保持版本 A 的锁存状态，或者尝试重新启动版本 B。内部结构具有经过优化的布置，它允许使用其中一个最低可用启动电流，这是设计低待机电源时的一个基本参数。负电流传感技术最大限度地降低了开关噪音对控制器运行的影响，同时用户可选择通过电流传感电阻的最大峰值电压。因此，可以对其功耗进行应用优化。最后，降压输入波纹确保了自然频率拖尾，让 EMI 特征变得顺畅。

  • Auxiliary Power Supply
  • Off-line battery chargers

  • Printers
  • Adapters

  • Quasi fixed TON, Variable TOFF Current Mode Control
  • Frequency foldback with Peak Current Compression
  • Short circuit protection (latched A version or auto restart B version)
  • Primary or secondary side regulation
  • Dedicated Latch Input for OTP, OVP
  • Low start-up current
  • Natural frequency jittering
  • Negative current sensing with programmable current sense resistor

Tools and Resources

Product services, tools and other useful resources related to NCP1351

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可订购器件:

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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

NCP1351ADR2G

Contact Sales

Obsolete

CAD Model

Pb

A

H

P

SOIC-8

751-07

1

260

REEL

2500

N

Flyback

Current Mode

Variable

No

Yes

Yes

Yes

No

28

400 / 400

Price N/A

More Details

NCP1351APG

Contact Sales

Obsolete

CAD Model

Pb

A

H

P

PDIP-8

626-05

NA

0

TUBE

50

N

Flyback

Current Mode

Variable

No

Yes

Yes

Yes

No

28

400 / 400

Price N/A

More Details

NCP1351BDR2G

Contact Sales

Obsolete

CAD Model

Pb

A

H

P

SOIC-8

751-07

1

260

REEL

2500

N

Flyback

Current Mode

Variable

No

Yes

Yes

Yes

No

28

400 / 400

Price N/A

More Details

NCP1351BPG

Contact Sales

Obsolete

CAD Model

Pb

A

H

P

PDIP-8

626-05

NA

0

TUBE

50

N

Flyback

Current Mode

Variable

No

Yes

Yes

Yes

No

28

400 / 400

Price N/A

More Details

NCP1351CDR2G

Contact Sales

Obsolete

CAD Model

Pb

A

H

P

SOIC-8

751-07

1

260

REEL

2500

N

Flyback

Current Mode

Variable

No

Yes

Yes

Yes

No

28

400 / 400

Price N/A

More Details

NCP1351CPG

Contact Sales

Obsolete

CAD Model

Pb

A

H

P

PDIP-8

626-05

NA

0

TUBE

50

N

Flyback

Current Mode

Variable

No

Yes

Yes

Yes

No

28

400 / 400

Price N/A

More Details

NCP1351DDR2G

Contact Sales

Obsolete

CAD Model

Pb

A

H

P

SOIC-8

751-07

1

260

REEL

2500

N

Flyback

Current Mode

Variable

No

Yes

Yes

Yes

No

28

400 / 400

Price N/A

More Details

NCP1351DPG

Contact Sales

Obsolete

CAD Model

Pb

A

H

P

PDIP-8

626-05

NA

0

TUBE

50

N

Flyback

Current Mode

Variable

No

Yes

Yes

Yes

No

28

400 / 400

Price N/A

More Details

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可靠性数据

Die Related Summary Data

Device: NCP1351BDR2G

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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