Power Factor Controllers | NCP1937

功率因数校正和准谐振反激控制器组合

量产中

数据表

购买

概览

此组合集成电路将为适配器应用实施一个紧凑、高能效的开关模式电源所需的功率因数校正 (PFC) 和准谐振反激功能进行集成。该 PFC 级以最大频率箝位在临界导通模式 (CrM) 下运行时表现为接近一致的功率因数。 该电路结合了构建一个坚固紧凑的 PFC 级所需的所有必要功能，同时最大程度减少了外部组件的数量。该准谐振电流模式反激级具有一个专属的谷锁闭电路，可确保稳定的谷切换。 该系统可在低至第 4 谷运行，对于超过第 4 谷的最小频率箝位则切换到频率折回模式，消除了噪声。跳过模式运行可在轻型负载条件下实现卓越能效，同时具有极低的待机功耗。

  • Adapters
  • Combo PFC+QR
  • All-In-One (AIO) Computers
  • High Power Notebook Adapters
  • <10mW No Load Standby Performance
  • High Voltage Startup Circuit and Active Input Filter Capacitor Discharge Circuitry
  • High Voltage Line Voltage Detector
  • Integrated High Voltage Switch Disconnects PFC Feedback Resistor Divider
  • Fault Input for Severe Fault Conditions
  • Bi-Level Line-Dependent Output Voltage
  • Boost Diode Short-Circuit Protection
  • Adjustable PFC Disable Threshold Based on Output Power
  • Frequency Foldback with Minimum Frequency Clamp
  • Minimum Frequency Clamp
  • Valley Switching Operation with Valley-Lockout
  • PFC
  • QR Flyback Controller

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参考价格

NCP1937A1DR2G

Find Replacements

联系销售

已停产

CAD Model

Pb

A

H

P

SOIC-20 NB

751BS

1

260

REEL

2500

No

CRM

Variable

Current Mode

Flyback

Variable

30

500 / 800

Yes

Yes

Yes

Yes

Price N/A

More Details

NCP1937A2DR2G

联系销售

量产中

CAD Model

Pb

A

H

P

SOIC-20 NB

751BS

1

260

REEL

2500

Yes

CRM

Variable

Current Mode

Flyback

Variable

30

500 / 800

Yes

Yes

Yes

Yes

$0.8637

More Details

NCP1937A3DR2G

联系销售

Active, Not Rec

CAD Model

Pb

A

H

P

SOIC-20 NB

751BS

1

260

REEL

2500

Yes

CRM

Variable

Current Mode

Flyback

Variable

30

500 / 800

Yes

Yes

Yes

Yes

$0.8398

More Details

NCP1937B1DR2G

联系销售

量产中

CAD Model

Pb

A

H

P

SOIC-20 NB

751BS

1

260

REEL

2500

Yes

CRM

Variable

Current Mode

Flyback

Variable

30

500 / 800

Yes

No

Yes

Yes

$0.8637

More Details

NCP1937B2DR2G

Find Replacements

联系销售

已停产

CAD Model

Pb

A

H

P

SOIC-20 NB

751BS

1

260

REEL

2500

No

CRM

Variable

Current Mode

Flyback

Variable

30

500 / 800

Yes

No

Yes

Yes

Price N/A

More Details

NCP1937B3DR2G

联系销售

Active, Not Rec

CAD Model

Pb

A

H

P

SOIC-20 NB

751BS

1

260

REEL

2500

Yes

CRM

Variable

Current Mode

Flyback

Variable

30

500 / 800

Yes

No

Yes

Yes

$0.8398

More Details

NCP1937B51DR2G

联系销售

量产中

CAD Model

Pb

A

H

P

SOIC-20 NB

751BS

1

260

REEL

2500

Yes

CRM

Variable

Current Mode

Flyback

Variable

30

500 / 800

Yes

No

Yes

Yes

$0.8247

More Details

NCP1937C1DR2G

Find Replacements

联系销售

已停产

CAD Model

Pb

A

H

P

SOIC-20 NB

751BS

1

260

REEL

2500

No

CRM

Variable

Current Mode

Flyback

Variable

30

500 / 800

Yes

Yes

Yes

Yes

Price N/A

More Details

NCP1937C4DR2G

联系销售

量产中

CAD Model

Pb

A

H

P

SOIC-20 NB

751BS

1

260

REEL

2500

Yes

CRM

Variable

Current Mode

Flyback

Variable

30

500 / 800

Yes

Yes

Yes

Yes

$0.8637

More Details

NCP1937C61DR2G

联系销售

量产中

CAD Model

Pb

A

H

P

SOIC-20 NB

751BS

1

260

REEL

2500

Yes

CRM

Variable

Current Mode

Flyback

Variable

30

500 / 800

Yes

Yes

Yes

Yes

$0.8637

More Details

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可靠性数据

Die Related Summary Data

Device: NCP1937A1DR2G

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

3478314626

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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