Power Factor Controllers | NCP1602

Power Factor Controller, Enhanced Light Load Efficiency

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Overview

The 6-pin PFC controller NCP1602 is designed to drive PFC boost stages. It is based on an innovative Valley Synchronized Frequency Fold-back (VSFF) method. In this mode, the circuit classically operates in Critical conduction Mode (CrM) when control voltage exceeds a programmable value Vctrl,FF. When Vcontrol is below this preset level Vctrl,FF, the NCP1602 (versions [B**] and [D**]) linearly decays the frequency down to about 30 kHz until Vcontrol reaches the SKIP mode threshold. VSFF maximizes the efficiency at both nominal and light load. In particular, the stand-by losses are reduced to a minimum. Like in FCCrM controllers, internal circuitry allows near-unity power factor even when the switching frequency is reduced. Housed in a TSOP6 package, the circuit also incorporates the features necessary for robust and compact PFC stages, with few external components.

  • Offline power supply

  • Flat Panel TV
  • High Power Adapters

  • Critical Conduction mode with current controlled frequency foldback
  • Valley Synchronized Frequency Fold-back (VSFF)
  • Works with or without a transformer w/ ZCD winding
  • Dynamic Response Enhancer

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Case Outline

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MSL Temp (°C)

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ON Target

PFC Mode

Frequency Operation

Control Mode

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fSW Typ (kHz)

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Reference Price

NCP1602ABASNT1G

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Obsolete

CAD Model

Pb

A

H

P

TSOP-6

318G-02

1

260

REEL

3000

N

CRM

Variable

Current Mode

Step-Up

Variable

30

500 / 800

-

Yes

Yes

No

Price N/A

More Details

NCP1602AEASNT1G

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Obsolete

CAD Model

Pb

A

H

P

TSOP-6

318G-02

1

260

REEL

3000

N

CRM

Variable

Current Mode

Step-Up

Variable

30

500 / 800

-

Yes

Yes

No

Price N/A

More Details

NCP1602DCCSNT1G

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Last Shipments

CAD Model

Pb

A

H

P

TSOP-6

318G-02

1

260

REEL

3000

N

CRM

Variable

Current Mode

Step-Up

Variable

30

500 / 800

-

Yes

Yes

No

Price N/A

More Details

NCP1602DFCSNT1G

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Last Shipments

CAD Model

Pb

A

H

P

TSOP-6

318G-02

1

260

REEL

3000

N

CRM

Variable

Current Mode

Step-Up

Variable

30

500 / 800

-

Yes

Yes

No

Price N/A

More Details

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Reliability Data

Die Related Summary Data

Device: NCP1602ABASNT1G

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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