功率因数控制器,增强型,高能效

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NCP1612 是一款有源功率因数校正 (PFC) 控制器,专门用作 AC-DC 适配器、平板电视、照明镇流器和其他中等功率离线转换器中的升压预转换器。该控制器基于创新的电流控制频率折回 (CCFF) 方法。在此模式下,当电感器电流超过编程值时,该电路通常以临界导通模式 (CrM) 运行。当电流低于此预设水平时,NCP1612 会将频率线性下降,当电流为空值时大约降至 20 kHz。CCFF 可在标称负载和轻型负载下最大程度提高能效。尤其待机损耗降至最低。该控制器具有丰富的保护功能组合,可正确处理运行和故障情况下的电源阵列。 此器件具有专门的 PFC_Okay 输出,尤其适用于 LLC 控制器的 PFC 级。

  • Offline Power Supplies
  • Lighting Ballasts
  • LED Lighting Drivers and Power Supplies
  • Flat TV
  • All-In-One Computers
  • High Powered Adapters
  • LED Lighting
  • Near Unity Power Factor
  • Critical conduction mode with current controlled frequency foldback
  • Dynamic Response Enhancer
  • Soft Overvoltage Protection
  • -500 mA/+800 mA Drive Capability
  • Valley turn on
  • Wide Vcc Range of 9.5-35 Vdc
  • Two Vcc startup versions: 10.5 V (A) and 17 V (B)
  • AC Line Brownout Detection
  • Cycle-by-cycle switch current monitoring
  • Saturated inductor and shorted boost or bypass diode detection
  • PFC Okay Output
  • Latch Off Input
  • Independent bulk overvoltage and undervoltage monitoring
  • Thermal Shutdown
  • Open Ground Pin Fault Monitoring

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状况

CAD Models

Compliance

Package Type

Case Outline

MSL Type

MSL Temp (°C)

Container Type

Container Qty.

ON Target

PFC Mode

Frequency Operation

Control Mode

Topology

fSW Typ (kHz)

VCC Max (V)

Drive Cap. (mA)

UVLO (V)

Latch

UVP

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Reference Price

NCP1612A1DR2G

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Active

CAD Model

Pb

A

H

P

SOIC-10 NB

1

260

REEL

2500

Y

DCM

Variable

Current Mode

Step-Up

Variable

35

500 / 800

9

Yes

Yes

Yes

$0.3835

More Details

NCP1612A2DR2G

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Obsolete

CAD Model

Pb

A

H

P

SOIC-10 NB

1

260

REEL

2500

N

DCM

Variable

Current Mode

Step-Up

Variable

35

500 / 800

9

Yes

Yes

Yes

Price N/A

More Details

NCP1612A3DR2G

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Active

CAD Model

Pb

A

H

P

SOIC-10 NB

1

260

REEL

2500

N

DCM

Fixed

Current Mode

Step-Up

Variable

35

500 / 800

9

Yes

Yes

Yes

$0.4419

More Details

NCP1612ADR2G

Loading...

Active

CAD Model

Pb

A

H

P

SOIC-10 NB

1

260

REEL

2500

Y

DCM

Variable

Current Mode

Step-Up

Variable

35

500 / 800

9

Yes

Yes

Yes

$0.3835

More Details

NCP1612BDR2G

Loading...

Obsolete

CAD Model

Pb

A

H

P

SOIC-10 NB

1

260

REEL

2500

N

DCM

Variable

Current Mode

Step-Up

Variable

35

500 / 800

9

Yes

Yes

Yes

Price N/A

More Details

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