Secondary Side Synchronous Rectification Driver for High Efficiency SMPS Topologies

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Overview

The NCP4306 is high performance driver tailored to control a synchronous rectification MOSFET in switch mode power supplies. Thanks to its high performance drivers and versatility, it can be used in various topologies such as DCM or CCM flyback, quasi resonant flyback, forward and half bridge resonant LLC.

The combination of externally or fixed adjustable minimum off-time and on-time blanking periods helps to fight the ringing induced by the PCB layout and other parasitic elements. A reliable and noise less operation of the SR system is insured due to the Self Synchronization feature. The NCP4306 also utilizes Kelvin connection of the driver to the MOSFET to achieve high efficiency operation at full load and utilizes a light load detection architecture to achieve high efficiency at light load.

The precise turn−off threshold, extremely low turn−off delay time and high sink current capability of the driver allow the maximum synchronous rectification MOSFET conduction time and enables maximum SMPS efficiency. The high accuracy driver and 5 V gate clamp enables the use of GaN MOSFETs.

  • High Power Density AC/DC Power Supplies
  • Notebook Adapters
  • Server Power Supplies aux power stage
  • ATX & All-in-one Power Supplies
  • High Density USB Adapters
  • Precise True Secondary Zero Current Detection
  • Typically 15 ns Turn off Delay from Current Sense Input to Driver
  • Zero Current Detection Pin Capability up to 200 V
  • Optional Ultrafast (10.5ns) Trigger Input
  • Disable Input
  • Adjustable Minimum ON Time and Minimum OFF Time
  • dV/dt detection
  • 7 A Sink, 2 A Source Drive capability
  • Automatic Light Load Disable Mode
  • 3.5V UVLO and Operation Voltage range up to 35V

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NCP4306AAAZZZADR2G

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Active

CAD Model

Pb

A

H

P

SOIC-8

1

260

REEL

2500

Y

37

NO

0.0022

Tj -40°C

Tj 125°C

$0.2985

More Details

NCP4306AAAZZZAMN1TBG

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Active

CAD Model

Pb

A

H

P

DFN-8

1

260

REEL

3000

Y

37

NO

0.0022

Tj -40°C

Tj 125°C

$0.4497

More Details

NCP4306AAAZZZAMNTWG

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Active

CAD Model

Pb

A

H

P

DFN-8

1

260

REEL

4000

Y

37

NO

0.0022

Tj -40°C

Tj 125°C

$0.4077

More Details

NCP4306AADZZZADR2G

Loading...

Active

CAD Model

Pb

A

H

P

SOIC-8

1

260

REEL

2500

Y

37

NO

0.0022

Tj -40°C

Tj 125°C

$0.2985

More Details

NCP4306AADZZZAMN1TBG

Loading...

Active

CAD Model

Pb

A

H

P

DFN-8

1

260

REEL

3000

Y

37

NO

0.0022

Tj -40°C

Tj 125°C

$0.3949

More Details

NCP4306AADZZZAMNTWG

Loading...

Active

CAD Model

Pb

A

H

P

DFN-8

1

260

REEL

4000

Y

37

NO

0.0022

Tj -40°C

Tj 125°C

$0.4497

More Details

NCP4306AAHZZZADR2G

Loading...

Active

CAD Model

Pb

A

H

P

SOIC-8

1

260

REEL

2500

Y

37

NO

0.0022

Tj -40°C

Tj 125°C

$0.3675

More Details

NCP4306DADZZBASNT1G

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Active

CAD Model

Pb

A

H

P

TSOP-6

1

260

REEL

3000

Y

37

~NA~

0.0022

-40

125

$0.23

More Details

NCP4306DADZZDASNT1G

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Active

CAD Model

Pb

A

H

P

TSOP-6

1

260

REEL

3000

Y

37

NO

0.0022

Tj -40°C

Tj 125°C

$0.23

More Details

NCP4306DAHZZAASNT1G

Loading...

Active

CAD Model

Pb

A

H

P

TSOP-6

1

260

REEL

3000

Y

37

NO

0.0022

Tj -40°C

Tj 125°C

$0.23

More Details

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