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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鈭抰ime and on鈭抰ime 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鈭抩ff threshold, extremely low turn鈭抩ff 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鈭扖ontained 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鈭扵ime
  • Adjustable Minimum OFF-Time with Ringing Detection
  • Adjustable Maximum ON鈭扵ime 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鈭扚ree Devices

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Reference Price

NCP43080ADR2G

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CAD Model

Pb

A

H

P

SOIC-8

751-07

3

260

REEL

2500

Y

37

N/A

0.0056

-40

125

$0.2997

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NCP43080AMTTWG

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CAD Model

Pb

A

H

P

WDFN-8

511AT

1

260

REEL

3000

N

37

N/A

0.0056

-40

125

Price N/A

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NCP43080DDR2G

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CAD Model

Pb

A

H

P

SOIC-8

751-07

3

260

REEL

2500

Y

37

N/A

0.0056

-40

125

$0.2832

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NCP43080DMNTWG

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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

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Reliability Data

Die Related Summary Data

Device: NCP43080ADR2G

Equivalent to wafer fab process: ONC25

Product Technology

Product Technology

Equivalent Device-Hours

MTBF/MTTF in Hours

FITS

ONC25

1

2712519294

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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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