功率因数控制器,提高了轻型负载能效

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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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NCP1622AEASNT1G

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Active

CAD Model

Pb

A

H

P

TSOP-6

1

260

REEL

3000

Y

CRM

Variable

Current Mode

Step-Up

Variable

30

500 / 800

17

Yes

Yes

No

$0.2573

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NCP1622BCASNT1G

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Active

CAD Model

Pb

A

H

P

TSOP-6

1

260

REEL

3000

F

CRM

Variable

Current Mode

Step-Up

Variable

30

500 / 800

17

Yes

Yes

No

$0.2983

More Details

NCP1622BCCSNT1G

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Active

CAD Model

Pb

A

H

P

TSOP-6

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

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Active

CAD Model

Pb

A

H

P

TSOP-6

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

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Active

CAD Model

Pb

A

H

P

TSOP-6

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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