Power Factor Controllers | NCP1680

Totem-Pole Critical Conduction Mode (CrM) Power Factor Correction Controller

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Overview

The NCP1680 is a CrM 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.

  • Power Factor Correction
  • Offline Power Supply

  • Industrial Power Supplies
  • Telecom 5G Power
  • Networking Power
  • Gaming Console Power Supplies
  • UHD TV Power Supplies
  • Computing Power Supplies

  • Totem Pole PFC Topology Eliminates Input Diode Bridge
  • Critical Conduction Mode (CrM) Operation
  • Discontinuous Conduction Mode (DCM) with Valley Turn On Under Light Load Condition
  • Frequency Foldback in DCM With 25 kHz Minimum Frequency
  • Skip Mode in Very Light Load Condition
  • Proprietary 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

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PFC Mode

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Reference Price

NCP1680AAD1R2G

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Active

CAD Model

Pb

A

H

P

SOIC-16

751B-05

1

260

REEL

2500

Y

CRM

Variable

Current/Voltage Mode

Totem Pole

Variable

30

100 / 100

10.5

Yes

Yes

No

$2.024

More Details

NCP1680ABD1R2G

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Active

CAD Model

Pb

A

H

P

SOIC-16

751B-05

1

260

REEL

2500

F

CRM

Variable

Current/Voltage Mode

Totem Pole

Variable

30

100 / 100

10.5

Yes

Yes

No

$2.024

More Details

NCP1680ACD1R2G

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Active

CAD Model

Pb

A

H

P

SOIC-16

751B-05

1

260

REEL

2500

F

CRM

Variable

Current/Voltage Mode

Totem Pole

Variable

30

100 / 100

10.5

Yes

Yes

No

$0.735

More Details

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Reliability Data

Die Related Summary Data

Device: NCP1680AAD1R2G

Equivalent to wafer fab process: ONC25

Product Technology

Product Technology

Equivalent Device-Hours

MTBF/MTTF in Hours

FITS

ONC25

1

2712519294

More Details

Re-calculate Data

Data is based on the following assumptions.

Note: The temperature and confidence level may be adjusted to your requirements.

Disclaimer: A reliability FIT rate calculated using this tool shall not be used for any functional safety purpose. In case a raw FIT rate needs to be estimated for a component which is targeted to be used in a safety critical application (i.e. compliant to ISO 26262 standard) it should be calculated according to generic safety standards (IEC62380, IEC61709, SN29500, FIDES, etc.)

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