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NCP43080 반도체 회로 부품 판매점

Synchronous Rectifier Controller



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ON Semiconductor
NCP43080 데이터시트, 핀배열, 회로
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


NCP43080 데이터시트, 핀배열, 회로
NCP43080
OK1
RTN
D1
Figure 1. Typical Application Example − LLC Converter with Optional LLD
Vbulk
C1
VCC
FLYBACK
CONTROL
CIRCUITRY
DRV
FB CS
R1 TR1 C6 R7
C2
D3 R6
R5
D4
C3
M2
D6
M1
C7
R2
OK1
R3 R4
R8
+Vout
C5
GND
C4
D5
Figure 2. Typical Application Example − DCM, CCM or QR Flyback Converter with optional LLD
www.onsemi.com
2




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NCP43080 rectifier

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