Secondary Side Controllers | NCP4318

Dual Channel Synchronous Rectification Controller

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NCP4318 is a mixed mode, which uses instantaneous drain voltage and previous dead time information, Synchronous Rectification (SR) controller for LLC resonant converter with minimum external components. The adaptive dead time control compensates induced parasitic inductance voltage to maximize SR MOSFET conduction and the efficiency. Multi-step turn-off threshold control and SR current inversion detection function prevent inversion current during fast load transient and allows stable SR operation over entire load range. In addition, to improve light load efficiency, VGATE is adaptively reduced from 10V to 6V/5V.

  • LLC resonant PSU
  • Gaming, servers, network, telecom
  • Laptop adapter, LED TV
  • Adaptive dead time control
  • Current inversion detection
  • Adaptive gate voltage control
  • 200V rated drain sensing pins for two channel MOSFET control

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NCP4318AHDDR2G

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CAD Model

Pb

A

H

P

SOIC-8

751BD

1

260

REEL

2500

F

37

~NA~

0.01

-40

125

$0.4718

More Details

NCP4318AHJDR2G

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CAD Model

Pb

A

H

P

SOIC-8

751BD

1

260

REEL

2500

F

37

~NA~

0.01

-40

125

$0.4777

More Details

NCP4318ALCDR2G

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Active

CAD Model

Pb

A

H

P

SOIC-8

751BD

1

260

REEL

2500

F

37

~NA~

0.01

-40

125

$0.4827

More Details

NCP4318ALFPDR2G

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CAD Model

Pb

A

H

P

SOIC-8 EP

751AC

1

260

REEL

2500

F

37

~NA~

0.01

-40

125

$0.6199

More Details

NCP4318ALGPDR2G

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CAD Model

Pb

A

H

P

SOIC-8 EP

751AC

1

260

REEL

2500

F

37

~NA~

0.01

-40

125

$0.6385

More Details

NCP4318ALKDR2G

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Active

CAD Model

Pb

A

H

P

SOIC-8

751BD

1

260

REEL

2500

F

37

~NA~

0.01

-40

125

$0.4718

More Details

NCP4318ALLDR2G

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Active

CAD Model

Pb

A

H

P

SOIC-8

751BD

1

260

REEL

2500

F

37

~NA~

0.01

-40

125

$0.5471

More Details

NCP4318ALSDR2G

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Active

CAD Model

Pb

A

H

P

SOIC-8

751BD

1

260

REEL

2500

F

37

~NA~

0.01

-40

125

$0.4827

More Details

NCP4318BLCDR2G

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Active

CAD Model

Pb

A

H

P

SOIC-8

751BD

1

260

REEL

2500

F

37

~NA~

0.01

-40

125

$0.4827

More Details

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