Power Factor Controllers | NCP1623

临界导通模式（CrM）功率因数矫正控制器，升压跟随器

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概览

NCP1623是一款驱动PFC升压级的控制器。创新谷值同步频率折返（VSFF）方法，能够在临界导通模式 (CrM) 下运行，直至功率降至阈值电平以下。PFC控制器进入断续导通模式（DCM），随着负载进一步衰减，死区时间增加（频率折返）。在标称负载和轻负载下，VSFF能最大限度地提高效率。此外，即使当开关频率降低时，其内部电路也能使功率因数接近统一。

采用TSOP-6封装，该电路具备构建强固而紧凑的PFC级所需的所有特性，A版本提供升压跟随器，可大幅提升低线路效率。这款控制器还可采用SOIC-8封装，提供由禁用引脚外部控制的超低功耗模式。

  • 功率因数校正
  • 离线式电源

  • 手机/笔记本电脑USB PD充电
  • 工业电源
  • 计算电源
  • 游戏本电源

  • 重负载下临界导通模式（CrM）
  • 轻负载下断续导通模式（DCM）带频率折返
  • 升压跟随器（限NCP1632A）
  • 睡眠模式，电路功耗低于100µA （限SOIC-8封装）
  • 通过漏极感应进行零电流检测
  • 动态响应增强器
  • 在负载范围内功率因数始终接近统一

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PFC Mode

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NCP1623ADR2G

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CAD Model

Pb

A

H

P

SOIC-8

751-07

1

260

REEL

2500

F

CRM

Variable

Current Mode

Step-Up

Variable

30

500 / 800

10.5

Yes

Yes

No

$0.3667

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NCP1623ASNT1G

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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

10.5

Yes

Yes

No

$0.3267

More Details

NCP1623CDR2G

Contact Sales

Active

CAD Model

Pb

A

H

P

SOIC-8

751-07

1

260

REEL

2500

F

CRM

Variable

Current Mode

Step-Up

Variable

30

500 / 800

10.5

Yes

Yes

No

$0.3667

More Details

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