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

Material Composition

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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)

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NCP1602DCCSNT1G

Active, Not Rec

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

$0.2667

More Details

NCP1602DFCSNT1G

Active, Not Rec

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

$0.2667

More Details

NCP1602AEASNT1G

Last Shipments

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

NCP1602ABASNT1G

Last Shipments

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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