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NCP4306: Secondary Side Synchronous Rectification Driver for High Efficiency SMPS Topologies

Datasheet: Secondary Side Synchronous Rectification Driver for High Efficiency SMPS Topologies
Rev. 6 (797kB)
Product Overview
»View Reliability Data
»View Material Composition
» Product Change Notification

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.

Features   Benefits
     
  • Precise True Secondary Zero Current Detection
  
  • Allows for proper timing of SR MOSFET turn on and turn off
  • Typically 15 ns Turn off Delay from Current Sense Input to Driver
  
  • Maximizes conduction time of the MOSFET to increase efficiency
  • Zero Current Detection Pin Capability up to 200 V
  
  • Allows direct connection of CS input to MOSFET drain in flyback applications
  • Optional Ultrafast (10.5ns) Trigger Input
  
  • Improves performance for applications working in deep CCM
  • Disable Input
  
  • Enters the IC into a low consumption standby mode
  • Adjustable Minimum ON Time and Minimum OFF Time
  
  • Prevents accidental MOSFET turn on or turn off due to ringing
  • dV/dt detection
  
  • Enhanced Operation for USB-PD Applications
  • 7 A Sink, 2 A Source Drive capability
  
  • Fast turn off of MOSFET for optimized conduction period
  • Automatic Light Load Disable Mode
  
  • Increased stability coming in and out of Light Load
  • 3.5V UVLO and Operation Voltage range up to 35V
  
  • Wide output operating voltages
Applications   End Products
  • 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
Technical Documentation & Design Resources
Software (1) Package Drawings (4)
Design Notes (3) Videos (3)
Simulation Models (3) Evaluation Board Documents (17)
Data Sheets (1)  
Evaluation/Development Tool Information
Product Status Compliance Short Description Action
NCP4306FLY100GEVB Active
Pb-free
NCP4306 high efficiency SR evaluation board for Flyback application, with 100V MosFET
NCP4306FLY150GEVB Active
Pb-free
NCP4306 high efficiency SR evaluation board for Flyback application, with 150V MosFET
NCP4306LLC60GEVB Active
Pb-free
NCP4306 high efficiency SR evaluation board for LLC application, with 60V MosFET
STR-ACF-12V100WPSU-GEVB Active
Pb-free
Strata Enabled NCP1568 100W AC to DC Converter
Availability & Samples
Specifications
Product
Status
Compliance
Description
Package
MSL
Container
Budgetary Price/Unit
Type
Case Outline
Type
Temperature
Type
Qty.
NCP4306AAAZZZADR2G Active
Pb-free
Halide free
NCP4306, SOIC-8 SOIC-8 751-07 1 260 Tape and Reel 2500 $0.2933
NCP4306AAAZZZAMN1TBG Active
Pb-free
Halide free
NCP4306 DFN-8 506BP 1 260 Tape and Reel 3000 $0.3733
NCP4306AAAZZZAMNTWG Active
Pb-free
Halide free
NCP4306 DFN-8 488AF 1 260 Tape and Reel 4000 $0.44
NCP4306AADZZZADR2G Active
Pb-free
Halide free
NCP4306, Flyback (dV/dt) - 100V/us, SOIC-8 SOIC-8 751-07 1 260 Tape and Reel 2500 $0.2933
NCP4306AADZZZAMN1TBG Active
Pb-free
Halide free
NCP4306 DFN-8 506BP 1 260 Tape and Reel 3000 $0.3733
NCP4306AADZZZAMNTWG Active
Pb-free
Halide free
NCP4306 DFN-8 488AF 1 260 Tape and Reel 4000 $0.44
NCP4306AAHZZZADR2G Active
Pb-free
Halide free
NCP4306, LLC exception - multiplier 4, SOIC-8 SOIC-8 751-07 1 260 Tape and Reel 2500 $0.2667
NCP4306DADZZBASNT1G Active
Pb-free
Halide free
NCP4306 TSOP-6 318G-02 1 260 Tape and Reel 3000 $0.2267
NCP4306DADZZDASNT1G Active
Pb-free
Halide free
NCP4306, Flyback (dV/dt) - 100V/us, TSOP-6 TSOP-6 318G-02 1 260 Tape and Reel 3000 $0.2267
NCP4306DAHZZAASNT1G Active
Pb-free
Halide free
NCP4306, LLC exception - multiplier 4, TSOP-6 TSOP-6 318G-02 1 260 Tape and Reel 3000 $0.2267
Market Leadtime (weeks) : 4 to 8
Market Leadtime (weeks) : 4 to 8
ON Semiconductor   (2020-09-02 00:00) : 18,000
Avnet   (2020-08-19 00:00) : >1K
Market Leadtime (weeks) : 4 to 8
Avnet   (2020-08-19 00:00) : >1K
Market Leadtime (weeks) : Contact Factory
Market Leadtime (weeks) : 4 to 8
ON Semiconductor   (2020-09-02 00:00) : 6,000
Avnet   (2020-08-19 00:00) : >1K
Market Leadtime (weeks) : 4 to 8
Avnet   (2020-08-19 00:00) : >1K
Market Leadtime (weeks) : Contact Factory
Market Leadtime (weeks) : Contact Factory
ON Semiconductor   (2020-09-02 00:00) : 15,000
Market Leadtime (weeks) : 4 to 8
Market Leadtime (weeks) : 4 to 8

Product
Description
Pricing ($/Unit)
Compliance
Status
VCC Max (V)
Vref Typ (V)
ICC Max (A)
TA Min (°C)
TA Max (°C)
Package Type
NCP4306AAAZZZADR2G  
 NCP4306, SOIC-8 
 $0.2933 
Pb
H
 Active   
37
NO
2.2mA
Tj -40°C
Tj 125°C
SOIC-8
NCP4306AAAZZZAMN1TBG  
 NCP4306 
 $0.3733 
Pb
H
 Active   
37
NO
2.2mA
Tj -40°C
Tj 125°C
DFN-8
NCP4306AAAZZZAMNTWG  
 NCP4306 
 $0.44 
Pb
H
 Active   
37
NO
2.2mA
Tj -40°C
Tj 125°C
DFN-8
NCP4306AADZZZADR2G  
 NCP4306, Flyback (dV/dt) - 100V/us, SOIC-8 
 $0.2933 
Pb
H
 Active   
37
NO
2.2mA
Tj -40°C
Tj 125°C
SOIC-8
NCP4306AADZZZAMN1TBG  
 NCP4306 
 $0.3733 
Pb
H
 Active   
37
NO
2.2mA
Tj -40°C
Tj 125°C
DFN-8
NCP4306AADZZZAMNTWG  
 NCP4306 
 $0.44 
Pb
H
 Active   
37
NO
2.2mA
Tj -40°C
Tj 125°C
DFN-8
NCP4306AAHZZZADR2G  
 NCP4306, LLC exception - multiplier 4, SOIC-8 
 $0.2667 
Pb
H
 Active   
37
NO
2.2mA
Tj -40°C
Tj 125°C
SOIC-8
NCP4306DADZZBASNT1G  
 NCP4306 
 $0.2267 
Pb
H
 Active   
TSOP-6
NCP4306DADZZDASNT1G  
 NCP4306, Flyback (dV/dt) - 100V/us, TSOP-6 
 $0.2267 
Pb
H
 Active   
37
NO
2.2mA
Tj -40°C
Tj 125°C
TSOP-6
NCP4306DAHZZAASNT1G  
 NCP4306, LLC exception - multiplier 4, TSOP-6 
 $0.2267 
Pb
H
 Active   
37
NO
2.2mA
Tj -40°C
Tj 125°C
TSOP-6
Case Outlines
506BP    751-07    318G-02    488AF   
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