NCP4304A,NCP4304ADR2G,NCP4304AMNTWG,NCP4304BDR2G,NCP4304BMNTWG

Part No.:
NCP4304A,NCP4304ADR2G,NCP4304AMNTWG,NCP4304BDR2G,NCP4304BMNTWG
Download:
Download
Description:
Secondary Side Synchronous Rectification Driver for High Efficiency SMPS Topologies
File Size:
822 K
Page:
32 Pages
Logo:
Maker:
ONSEMI [ ON SEMICONDUCTOR ]
PCB Prototype

July 19, 2018:

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PBL38610-2

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PD0120.702

PE-53682NL

PFP-50N

PCB Datasheet:1PCB Datasheet:1PCB Datasheet:1
NCP4304A, NCP4304B
Secondary Side
Synchronous Rectification
Driver for High Efficiency
SMPS Topologies
The NCP4304A/B is a full featured controller and driver tailored to
control synchronous rectification circuitry in switch mode power
supplies. Due to its versatility, it can be used in various topologies such
as flyback, forward and Half Bridge Resonant LLC.
The combination of externally adjustable minimum on and off times
helps to fight the ringing induced by the PCB Online layout and other
parasitic elements. Therefore, a reliable and noise less operation of the
SR system is insured.
The extremely low turn off delay time, high sink current capability
of the driver and automatic package parasitic inductance
compensation system allow to maximize synchronous rectification
MOSFET conduction time that enables further increase of SMPS
efficiency.
Finally, a wide operating V
CC
range combined with two versions of
driver voltage clamp eases implementation of the SR system in 24 V
output applications.
Features
http://onsemi.com
MARKING
DIAGRAM
8
8
1
SOIC−8
D SUFFIX
CASE 751
1
4304x
ALYW
G
G
DFN8
CASE 488AF
1
4304x
NCP
4304x
ALYWG
G
Self-Contained Control of Synchronous Rectifier in CCM, DCM, and
QR Flyback Applications
Precise True Secondary Zero Current Detection with Adjustable
Threshold
Automatic Parasitic Inductance Compensation Input
Typically 40 ns Turn off Delay from Current Sense Input to Driver
Zero Current Detection Pin Capability up to 200 V
Optional Ultrafast Trigger Interface for Further Improved
Performance in Applications that Work in Deep CCM
Disable Input to Enter Standby or Low Consumption Mode
Adjustable Minimum On Time Independent of V
CC
Level
Adjustable Minimum Off Time Independent of V
CC
Level
5 A/2.5 A Peak Current Sink/Source Drive Capability
Operating Voltage Range up to 30 V
Gate Drive Clamp of Either 12 V (NCP4304A) or 6 V (NCP4304B)
Low Startup and Standby Current Consumption
Maximum Frequency of Operation up to 500 kHz
SOIC−8 Package
These are Pb-Free Devices
Notebook Adapters
High Power Density AC/DC Power Supplies
Gaming Consoles
All SMPS with High Efficiency Requirements
= Specific Device Code
x = A or B
A
= Assembly Location
L
= Wafer Lot
Y
= Year
W
= Work Week
G
= Pb−Free Package
(*Note: Microdot may be in either location)
PINOUT INFORMATION
V
CC
Min_Toff
Min_Ton
Trig/Disable
1
2
3
4
8
7
6
5
DRV
GND
COMP
CS
(NOTE: For DFN the exposed pad must be either
unconnected or preferably connected to ground.
The GND pin must be always connected to ground.)
ORDERING INFORMATION
Device
NCP4304ADR2G
NCP4304BDR2G
NCP4304AMNTWG
NCP4304BMNTWG
Package
SOIC−8
(Pb−Free)
SOIC−8
(Pb−Free)
DFN8
(Pb−Free)
DFN8
(Pb−Free)
Shipping
2500 /
Tape & Reel
2500 /
Tape & Reel
4000 /
Tape & Reel
4000 /
Tape & Reel
Typical Applications
†For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specifications
Brochure, BRD8011/D.
©
Semiconductor Components Industries, LLC, 2013
March, 2013
Rev. 1
1
Publication Order Number:
NCP4304/D