Power Factor Controllers | NCP1622

功率因数控制器，提高了轻型负载能效

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概览

6 引脚 PFC 控制器 NCP1622 适用于驱动 PFC 升压级。它基于创新的谷同步频率折回 (VSFF) 方法。 在此模式下，当电感器电流超过编程值 Vctrl,FF 时，该电路通常以临界导通模式 (CrM) 运行。当 Vcontrol 低于此预设置级别 Vctrl,FF 时，NCP1622（版本 [B**] 和 [D**]）将对频率进行线性降至约 30 kHz，直到 Vcontrol 达到跳过模式阈值。VSFF 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。与 FCCrM 控制器中的内部电路类似，即使在开关频率降低时也能实现接近一致的功率因数。该电路采用 TSOP6 封装，具有坚固紧凑的 PFC 级所需的功能，且外部组件很少。

  • Offline Power Supply
  • Flat panel TV
  • High Power Adapters
  • PC Power Supplies
  • Lighting Ballasts
  • Flat Screen TV
  • All Off Line Appliances Requiring Power Factor correction
  • Critical Conduction Mode with frequency foldback
  • Valley Synchronized Frequency Fold-back (VSFF)
  • Works with or without a transformer w/ ZCD winding
  • Dynamic Response Enhancer

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状态

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

Inhibition

Reference Price

NCP1622AEASNT1G

Loading...

Active

CAD Model

Pb

A

H

P

TSOP-6

318G-02

1

260

REEL

3000

Y

CRM

Variable

Current Mode

Step-Up

Variable

30

500 / 800

17

Yes

Yes

No

$0.2573

More Details

NCP1622BCASNT1G

Loading...

Active

CAD Model

Pb

A

H

P

TSOP-6

318G-02

1

260

REEL

3000

F

CRM

Variable

Current Mode

Step-Up

Variable

30

500 / 800

17

Yes

Yes

No

$0.2983

More Details

NCP1622BCCSNT1G

Loading...

Active

CAD Model

Pb

A

H

P

TSOP-6

318G-02

1

260

REEL

3000

Y

CRM

Variable

Current Mode

Step-Up

Variable

30

500 / 800

10.5

Yes

Yes

No

$0.2573

More Details

NCP1622BECSNT1G

Loading...

Active

CAD Model

Pb

A

H

P

TSOP-6

318G-02

1

260

REEL

3000

Y

CRM

Variable

Current Mode

Step-Up

Variable

30

500 / 800

10.5

Yes

Yes

No

$0.2947

More Details

NCP1622DCCSNT1G

Loading...

Active

CAD Model

Pb

A

H

P

TSOP-6

318G-02

1

260

REEL

3000

Y

CRM

Variable

Current Mode

Step-Up

Variable

30

500 / 800

10.5

Yes

Yes

No

$0.2573

More Details

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