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What is NCP43080?

This electronic component, produced by the manufacturer "ON Semiconductor", performs the same function as "Synchronous Rectifier Controller".


NCP43080 Datasheet PDF - ON Semiconductor

Part Number NCP43080
Description Synchronous Rectifier Controller
Manufacturers ON Semiconductor 
Logo ON Semiconductor Logo 


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NCP43080
Product Preview
Synchronous Rectifier
Controller
The NCP43080 is a synchronous rectifier controller for switch
mode power supplies. The controller enables high efficiency designs
for flyback and quasi resonant flyback topologies.
Externally adjustable minimum off−time and on−time blanking
periods provides flexibility to drive various MOSFET package types
and PCB layout. A reliable and noise less operation of the SR system is
insured due to the Self Synchronization feature. The NCP43080 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. The high
accuracy driver and 5 V gate clamp make it ideally suited for directly
driving GaN devices.
Features
Self−Contained Control of Synchronous Rectifier in CCM, DCM and
QR for Flyback, Forward or LLC Applications
Precise True Secondary Zero Current Detection
Rugged Current Sense Pin (up to 150 V)
Adjustable Minimum ON−Time
Adjustable Minimum OFF-Time with Ringing Detection
Adjustable Maximum ON−Time for CCM Controlling of Primary
QR Controller
Improved Robust Self Synchronization Capability
8 A / 4 A Peak Current Sink / Source Drive Capability
Operating Voltage Range up to VCC = 35 V
Automatic Light−load & Disable Mode
Adaptive Gate Drive Clamp
GaN Transistor Driving Capability (options A and C)
Low Startup and Disable Current Consumption
Maximum Operation Frequency up to 1 MHz
SOIC-8 and DFN−8 (4x4) and WDFN8 (2x2) Packages
These are Pb−Free Devices
Typical Applications
Notebook Adapters
High Power Density AC/DC Power Supplies (Cell Phone Chargers)
LCD TVs
All SMPS with High Efficiency Requirements
This document contains information on a product under development. ON Semiconductor
reserves the right to change or discontinue this product without notice.
www.onsemi.com
8
1
SOIC−8
D SUFFIX
CASE 751
MARKING
DIAGRAMS
8
43080x
ALYW G
G
1
1
DFN8
MN SUFFIX
CASE 488AF
43080x
ALYWG
G
WDFN8
MT SUFFIX
CASE 511AT
1
FxMG
G
43080x = Specific Device Code
x = A, B, C, D or Q
Fx = Specific Device Code
x = A, 2, C, D or Q
A = Assembly Location
L = Wafer Lot
Y = Year
W = Work Week
M = Date Code
G = Pb−Free Package
(Note: Microdot may be in either location)
ORDERING INFORMATION
See detailed ordering and shipping information on page 33 of
this data sheet.
© Semiconductor Components Industries, LLC, 2015
November, 2015 − Rev. P0
1
Publication Order Number:
NCP43080/D

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NCP43080 equivalent
NCP43080
MIN_TON
CS
ELAPSED
ADJ Minimum ON time
generator
EN
VDD
100mA
CS_ON
CS
detection
CS_OFF
CS_RESET
MIN_TOFF
RESET
ADJ Minimum OFF ELAPSED
time generator EN
MAX_TON
ELAPSED
ADJ Maximum ON time
generator
EN
DISABLE
Disable detection
&
V DRV clamp
modulation
V_DRV
control
LLD
Control logic
DRIVER
DRV Out
DRV
VDD
VCC managment
DISABLE
UVLO
VCC
GND
Figure 6. Internal Circuit Architecture − NCP43080Q (CCM QR) with MAX_TON
www.onsemi.com
5


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