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Secondary Side Controllers | NCP43080

Synchronous Rectifier Controller with LLD Function

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Overview

The NCP43080 is a synchronous rectifier controller for switch modepower supplies. The controller enables high efficiency designs forflyback, quasi resonant flyback and LLC topologies.

Externally adjustable minimum off−time and on−time blankingperiods provides flexibility to drive various MOSFET package typesand PCB layout. A reliable and noise less operation of the SR system isinsured due to the Self Synchronization feature. The NCP4308 alsoutilizes Kelvin connection of the driver to the MOSFET to achieve highefficiency operation at full load.

The precise turn−off threshold, extremely low turn−off delay timeand high sink current capability of the driver allow the maximumsynchronous rectification MOSFET conduction time. The highaccuracy driver and 5 V gate clamp make it ideally suited for directlydriving GaN devices.

To provide more flexibility in PCB layout there are two versions of this product.
NCP4308 does NOT have LLD function
NCP43080 has LLD function

  • Notebook Adapters
  • High Power Density AC/DC Power Supplies (Cell Phone Chargers)
  • LCD TVs
  • All SMPS with High Efficiency Requirements
  • SR for Flyback & LLC
  • Notebook Adapters
  • Smartphone Chargers
  • Tablet Chargers
  • AC-DC Power Adapters
  • LCD TVs
  • Ultra High Density Adapters
  • Self−Contained Control of Synchronous Rectifier in CCM, DCM and QR for Flyback or LLC Applications
  • Precise True Secondary Zero Current Detection
  • Rugged Current Sense Pin (up to 150 V)
  • Adjustable Minimum ON−Time
  • Adjustable Minimum OFF-Time with Ringing Detection
  • Adjustable Maximum ON−Time for CCM Controlling of Primary QR Controller
  • Operating Voltage Range up to VCC = 35 V
  • 8 A / 4 A Peak Current Sink / Source Drive Capability
  • GaN Transistor Driving Capability (options A and C)
  • Low Startup Current Consumption
  • Maximum Operation Frequency up to 1 MHz
  • Improved Robust Self Synchronization Capability
  • These are Pb−Free Devices

Material Composition

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Package Type

Case Outline

MSL Type

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VCC Max (V)

Vref Typ (V)

ICC Max (A)

TA Min (°C)

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Reference Price

NCP43080ADR2G

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Active

CAD Model

Pb

A

H

P

SOIC-8

751-07

3

260

REEL

2500

Y

37

N/A

0.0056

-40

125

$0.2997

More Details

NCP43080AMTTWG

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Lifetime

CAD Model

Pb

A

H

P

WDFN-8

511AT

1

260

REEL

3000

N

37

N/A

0.0056

-40

125

$0.3159

More Details

NCP43080DDR2G

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Active

CAD Model

Pb

A

H

P

SOIC-8

751-07

3

260

REEL

2500

Y

37

N/A

0.0056

-40

125

$0.2832

More Details

NCP43080DMNTWG

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Active

CAD Model

Pb

A

H

P

DFN-8

488AF

1

260

REEL

4000

Y

37

N/A

0.0056

-40

125

$0.5233

More Details

NCP43080DMTTWG

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Active

CAD Model

Pb

A

H

P

WDFN-8

511AT

1

260

REEL

3000

Y

37

N/A

0.0056

-40

125

$0.276

More Details

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