Power Factor Controllers | NCP1681

Totem-Pole Continuous Conduction Mode (CCM) / Multi-mode (CrM-CCM) Power Factor Correction Controller

Similar Products

Availability & Samples

Favorite

Datasheet
CAD Model

CAD Model

Overview

The NCP1681 is a PFC controller IC designed to drive the bridgeless totem-pole PFC topology. The bridgeless totem-pole PFC is a power factor correction architecture that consists of a fast switching leg driven at the PWM switching frequency and a second leg that operates at the AC line frequency. This topology eliminates the diode bridge present at the input of a conventional PFC circuit, allowing significant improvement in the power stage efficiency. The controller can be configured to operate in Continuous Conduction Mode (CCM) or Multi-Mode (CrM-CCM) operation.

  • Power Factor Correction
  • Offline Power Supply
  • Server Power
  • Telecom 5G Power
  • Networking Power
  • Gaming Console Power Supplies
  • UHD TV Power Supplies
  • Industrial Power Supplies
  • Totem Pole PFC Topology Eliminates Input Diode Bridge
  • Continuous Conduction Mode (CCM) Operation At High Power Level
  • Optional Multi-mode Operation With CCM at High Power & CrM at Medium Power Level
  • Frequency Foldback in DCM With 25 kHz Minimum Frequency
  • Skip Mode in Very Light Load Condition
  • Novel Current Sense Scheme
  • Digital Voltage Loop Compensation
  • AC Line Monitoring Circuit & AC Phase Detection
  • Near Unity Power Factor in All Operating Modes
  • PFC OK Indicator

Material Composition

Product Change Notification

Search

Close Search

Products:

3

Share

Sort by

  • Price/Unit

Product Groups:

┗

Orderable Parts:

3

Product

Status

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

Pricing ($/Unit)

NCP1681ABD2R2G

Active

CAD Model

Pb

A

H

P

SOIC20 NB LESS PIN 17 & 19

751EZ

1

260

REEL

2500

F

CCM

Fixed

Current/Voltage Mode

Totem Pole

95

30

100 / 100

10.5

Yes

Yes

No

$2.6399

More Details

NCP1681BAD2R2G

Active

CAD Model

Pb

A

H

P

SOIC20 NB LESS PIN 17 & 19

751EZ

1

260

REEL

2500

F

MM

Variable

Current/Voltage Mode

Totem Pole

65 / Variable

30

100 / 100

10.5

Yes

Yes

No

$2.6399

More Details

NCP1681AAD2R2G

Active

CAD Model

Pb

A

H

P

SOIC20 NB LESS PIN 17 & 19

751EZ

1

260

REEL

2500

Y

CCM

Fixed

Current/Voltage Mode

Totem Pole

65

30

100 / 100

10.5

Yes

Yes

No

$2.6399

More Details

Show More

1-25 of 25

Products per page

Jump to :

1
Email Sales
Please provide a first name.
Please provide a last name.
Please provide a company/university name.
Please provide a valid email.
Please choose a country.
Please choose a job title.
Please provide a how could we help you.
You have to agree with the privacy policy.

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Hello, your current browser settings are preventing us from processing your submission. You can adjust your browser settings and reload the page or you can submit an email directly to inside.sales@onsemi.com

You might also try the following:

  • Clear your browser cookies
  • Try to open this page in anonymous browser window
  • Try a different browser
  • Make sure you have reliable internet connection